2021-06-09 17:39:45

by Sergio Paracuellos

[permalink] [raw]
Subject: [PATCH v2 2/3] PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver

Add driver for the PCIe controller of the MT7621 SoC.

Acked-by: Greg Kroah-Hartman <[email protected]>
Signed-off-by: Sergio Paracuellos <[email protected]>
---
arch/mips/ralink/Kconfig | 2 +-
drivers/pci/controller/Kconfig | 8 ++
drivers/pci/controller/Makefile | 1 +
.../controller}/pci-mt7621.c | 0
drivers/staging/Kconfig | 2 -
drivers/staging/Makefile | 1 -
drivers/staging/mt7621-pci/Kconfig | 8 --
drivers/staging/mt7621-pci/Makefile | 2 -
drivers/staging/mt7621-pci/TODO | 4 -
.../mt7621-pci/mediatek,mt7621-pci.txt | 104 ------------------
10 files changed, 10 insertions(+), 122 deletions(-)
rename drivers/{staging/mt7621-pci => pci/controller}/pci-mt7621.c (100%)
delete mode 100644 drivers/staging/mt7621-pci/Kconfig
delete mode 100644 drivers/staging/mt7621-pci/Makefile
delete mode 100644 drivers/staging/mt7621-pci/TODO
delete mode 100644 drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt

diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
index ec4daa63c5e3..461e33d20c9c 100644
--- a/arch/mips/ralink/Kconfig
+++ b/arch/mips/ralink/Kconfig
@@ -56,7 +56,7 @@ choice
select MIPS_GIC
select COMMON_CLK
select CLKSRC_MIPS_GIC
- select HAVE_PCI if PCI_MT7621
+ select HAVE_PCI
select SOC_BUS
endchoice

diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
index 2f2c8a1729f9..6b006df87884 100644
--- a/drivers/pci/controller/Kconfig
+++ b/drivers/pci/controller/Kconfig
@@ -303,6 +303,14 @@ config PCIE_HISI_ERR
Say Y here if you want error handling support
for the PCIe controller's errors on HiSilicon HIP SoCs

+config PCI_MT7621
+ bool "MediaTek MT7621 PCI Controller"
+ depends on (RALINK && SOC_MT7621) || (MIPS && COMPILE_TEST)
+ select PCI_DRIVERS_GENERIC
+ default SOC_MT7621
+ help
+ This selects a driver for the MediaTek MT7621 PCI Controller.
+
source "drivers/pci/controller/dwc/Kconfig"
source "drivers/pci/controller/mobiveil/Kconfig"
source "drivers/pci/controller/cadence/Kconfig"
diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile
index 63e3880a3e87..ac902dc4e1a9 100644
--- a/drivers/pci/controller/Makefile
+++ b/drivers/pci/controller/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_VMD) += vmd.o
obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o
obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
obj-$(CONFIG_PCIE_HISI_ERR) += pcie-hisi-error.o
+obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
# pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
obj-y += dwc/
obj-y += mobiveil/
diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/pci/controller/pci-mt7621.c
similarity index 100%
rename from drivers/staging/mt7621-pci/pci-mt7621.c
rename to drivers/pci/controller/pci-mt7621.c
diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
index b7ae5bdc4eb5..9a21d730ab2b 100644
--- a/drivers/staging/Kconfig
+++ b/drivers/staging/Kconfig
@@ -86,8 +86,6 @@ source "drivers/staging/vc04_services/Kconfig"

source "drivers/staging/pi433/Kconfig"

-source "drivers/staging/mt7621-pci/Kconfig"
-
source "drivers/staging/mt7621-dma/Kconfig"

source "drivers/staging/ralink-gdma/Kconfig"
diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
index 075c979bfe7c..b7b4916761d4 100644
--- a/drivers/staging/Makefile
+++ b/drivers/staging/Makefile
@@ -33,7 +33,6 @@ obj-$(CONFIG_KS7010) += ks7010/
obj-$(CONFIG_GREYBUS) += greybus/
obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/
obj-$(CONFIG_PI433) += pi433/
-obj-$(CONFIG_PCI_MT7621) += mt7621-pci/
obj-$(CONFIG_SOC_MT7621) += mt7621-dma/
obj-$(CONFIG_DMA_RALINK) += ralink-gdma/
obj-$(CONFIG_SOC_MT7621) += mt7621-dts/
diff --git a/drivers/staging/mt7621-pci/Kconfig b/drivers/staging/mt7621-pci/Kconfig
deleted file mode 100644
index ce58042f2f21..000000000000
--- a/drivers/staging/mt7621-pci/Kconfig
+++ /dev/null
@@ -1,8 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-config PCI_MT7621
- tristate "MediaTek MT7621 PCI Controller"
- depends on RALINK
- select PCI_DRIVERS_GENERIC
- help
- This selects a driver for the MediaTek MT7621 PCI Controller.
-
diff --git a/drivers/staging/mt7621-pci/Makefile b/drivers/staging/mt7621-pci/Makefile
deleted file mode 100644
index f4e651cf7ce3..000000000000
--- a/drivers/staging/mt7621-pci/Makefile
+++ /dev/null
@@ -1,2 +0,0 @@
-# SPDX-License-Identifier: GPL-2.0
-obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
diff --git a/drivers/staging/mt7621-pci/TODO b/drivers/staging/mt7621-pci/TODO
deleted file mode 100644
index d674a9ac85c1..000000000000
--- a/drivers/staging/mt7621-pci/TODO
+++ /dev/null
@@ -1,4 +0,0 @@
-
-- general code review and cleanup
-
-Cc: NeilBrown <[email protected]>
diff --git a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt b/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
deleted file mode 100644
index 327a68267309..000000000000
--- a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
+++ /dev/null
@@ -1,104 +0,0 @@
-MediaTek MT7621 PCIe controller
-
-Required properties:
-- compatible: "mediatek,mt7621-pci"
-- device_type: Must be "pci"
-- reg: Base addresses and lengths of the PCIe subsys and root ports.
-- bus-range: Range of bus numbers associated with this controller.
-- #address-cells: Address representation for root ports (must be 3)
-- pinctrl-names : The pin control state names.
-- pinctrl-0: The "default" pinctrl state.
-- #size-cells: Size representation for root ports (must be 2)
-- ranges: Ranges for the PCI memory and I/O regions.
-- #interrupt-cells: Must be 1
-- interrupt-map-mask and interrupt-map: Standard PCI IRQ mapping properties.
- Please refer to the standard PCI bus binding document for a more detailed
- explanation.
-- status: either "disabled" or "okay".
-- resets: Must contain an entry for each entry in reset-names.
- See ../reset/reset.txt for details.
-- reset-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
- root ports.
-- clocks: Must contain an entry for each entry in clock-names.
- See ../clocks/clock-bindings.txt for details.
-- clock-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
- root ports.
-- reset-gpios: GPIO specs for the reset pins.
-
-In addition, the device tree node must have sub-nodes describing each PCIe port
-interface, having the following mandatory properties:
-
-Required properties:
-- reg: Only the first four bytes are used to refer to the correct bus number
- and device number.
-- #address-cells: Must be 3
-- #size-cells: Must be 2
-- ranges: Sub-ranges distributed from the PCIe controller node. An empty
- property is sufficient.
-- bus-range: Range of bus numbers associated with this port.
-
-Example for MT7621:
-
- pcie: pcie@1e140000 {
- compatible = "mediatek,mt7621-pci";
- reg = <0x1e140000 0x100 /* host-pci bridge registers */
- 0x1e142000 0x100 /* pcie port 0 RC control registers */
- 0x1e143000 0x100 /* pcie port 1 RC control registers */
- 0x1e144000 0x100>; /* pcie port 2 RC control registers */
-
- #address-cells = <3>;
- #size-cells = <2>;
-
- pinctrl-names = "default";
- pinctrl-0 = <&pcie_pins>;
-
- device_type = "pci";
-
- bus-range = <0 255>;
- ranges = <
- 0x02000000 0 0x00000000 0x60000000 0 0x10000000 /* pci memory */
- 0x01000000 0 0x00000000 0x1e160000 0 0x00010000 /* io space */
- >;
-
- #interrupt-cells = <1>;
- interrupt-map-mask = <0xF0000 0 0 1>;
- interrupt-map = <0x10000 0 0 1 &gic GIC_SHARED 4 IRQ_TYPE_LEVEL_HIGH>,
- <0x20000 0 0 1 &gic GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH>,
- <0x30000 0 0 1 &gic GIC_SHARED 25 IRQ_TYPE_LEVEL_HIGH>;
-
- status = "disabled";
-
- resets = <&rstctrl 24 &rstctrl 25 &rstctrl 26>;
- reset-names = "pcie0", "pcie1", "pcie2";
- clocks = <&clkctrl 24 &clkctrl 25 &clkctrl 26>;
- clock-names = "pcie0", "pcie1", "pcie2";
-
- reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>,
- <&gpio 8 GPIO_ACTIVE_LOW>,
- <&gpio 7 GPIO_ACTIVE_LOW>;
-
- pcie@0,0 {
- reg = <0x0000 0 0 0 0>;
- #address-cells = <3>;
- #size-cells = <2>;
- ranges;
- bus-range = <0x00 0xff>;
- };
-
- pcie@1,0 {
- reg = <0x0800 0 0 0 0>;
- #address-cells = <3>;
- #size-cells = <2>;
- ranges;
- bus-range = <0x00 0xff>;
- };
-
- pcie@2,0 {
- reg = <0x1000 0 0 0 0>;
- #address-cells = <3>;
- #size-cells = <2>;
- ranges;
- bus-range = <0x00 0xff>;
- };
- };
-
--
2.25.1


2021-08-05 10:35:08

by Lorenzo Pieralisi

[permalink] [raw]
Subject: Re: [PATCH v2 2/3] PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver

On Wed, Jun 09, 2021 at 04:01:58PM +0200, Sergio Paracuellos wrote:
> Add driver for the PCIe controller of the MT7621 SoC.
>
> Acked-by: Greg Kroah-Hartman <[email protected]>
> Signed-off-by: Sergio Paracuellos <[email protected]>
> ---
> arch/mips/ralink/Kconfig | 2 +-
> drivers/pci/controller/Kconfig | 8 ++
> drivers/pci/controller/Makefile | 1 +
> .../controller}/pci-mt7621.c | 0
> drivers/staging/Kconfig | 2 -
> drivers/staging/Makefile | 1 -
> drivers/staging/mt7621-pci/Kconfig | 8 --
> drivers/staging/mt7621-pci/Makefile | 2 -
> drivers/staging/mt7621-pci/TODO | 4 -
> .../mt7621-pci/mediatek,mt7621-pci.txt | 104 ------------------
> 10 files changed, 10 insertions(+), 122 deletions(-)
> rename drivers/{staging/mt7621-pci => pci/controller}/pci-mt7621.c (100%)
> delete mode 100644 drivers/staging/mt7621-pci/Kconfig
> delete mode 100644 drivers/staging/mt7621-pci/Makefile
> delete mode 100644 drivers/staging/mt7621-pci/TODO
> delete mode 100644 drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
>
> diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
> index ec4daa63c5e3..461e33d20c9c 100644
> --- a/arch/mips/ralink/Kconfig
> +++ b/arch/mips/ralink/Kconfig
> @@ -56,7 +56,7 @@ choice
> select MIPS_GIC
> select COMMON_CLK
> select CLKSRC_MIPS_GIC
> - select HAVE_PCI if PCI_MT7621
> + select HAVE_PCI
> select SOC_BUS
> endchoice
>
> diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
> index 2f2c8a1729f9..6b006df87884 100644
> --- a/drivers/pci/controller/Kconfig
> +++ b/drivers/pci/controller/Kconfig
> @@ -303,6 +303,14 @@ config PCIE_HISI_ERR
> Say Y here if you want error handling support
> for the PCIe controller's errors on HiSilicon HIP SoCs
>
> +config PCI_MT7621
> + bool "MediaTek MT7621 PCI Controller"
> + depends on (RALINK && SOC_MT7621) || (MIPS && COMPILE_TEST)
> + select PCI_DRIVERS_GENERIC

Can this be selected in arch/mips rather than here ?

Thanks,
Lorenzo

> + default SOC_MT7621
> + help
> + This selects a driver for the MediaTek MT7621 PCI Controller.
> +
> source "drivers/pci/controller/dwc/Kconfig"
> source "drivers/pci/controller/mobiveil/Kconfig"
> source "drivers/pci/controller/cadence/Kconfig"
> diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile
> index 63e3880a3e87..ac902dc4e1a9 100644
> --- a/drivers/pci/controller/Makefile
> +++ b/drivers/pci/controller/Makefile
> @@ -36,6 +36,7 @@ obj-$(CONFIG_VMD) += vmd.o
> obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o
> obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
> obj-$(CONFIG_PCIE_HISI_ERR) += pcie-hisi-error.o
> +obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
> obj-y += dwc/
> obj-y += mobiveil/
> diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/pci/controller/pci-mt7621.c
> similarity index 100%
> rename from drivers/staging/mt7621-pci/pci-mt7621.c
> rename to drivers/pci/controller/pci-mt7621.c
> diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
> index b7ae5bdc4eb5..9a21d730ab2b 100644
> --- a/drivers/staging/Kconfig
> +++ b/drivers/staging/Kconfig
> @@ -86,8 +86,6 @@ source "drivers/staging/vc04_services/Kconfig"
>
> source "drivers/staging/pi433/Kconfig"
>
> -source "drivers/staging/mt7621-pci/Kconfig"
> -
> source "drivers/staging/mt7621-dma/Kconfig"
>
> source "drivers/staging/ralink-gdma/Kconfig"
> diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
> index 075c979bfe7c..b7b4916761d4 100644
> --- a/drivers/staging/Makefile
> +++ b/drivers/staging/Makefile
> @@ -33,7 +33,6 @@ obj-$(CONFIG_KS7010) += ks7010/
> obj-$(CONFIG_GREYBUS) += greybus/
> obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/
> obj-$(CONFIG_PI433) += pi433/
> -obj-$(CONFIG_PCI_MT7621) += mt7621-pci/
> obj-$(CONFIG_SOC_MT7621) += mt7621-dma/
> obj-$(CONFIG_DMA_RALINK) += ralink-gdma/
> obj-$(CONFIG_SOC_MT7621) += mt7621-dts/
> diff --git a/drivers/staging/mt7621-pci/Kconfig b/drivers/staging/mt7621-pci/Kconfig
> deleted file mode 100644
> index ce58042f2f21..000000000000
> --- a/drivers/staging/mt7621-pci/Kconfig
> +++ /dev/null
> @@ -1,8 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0
> -config PCI_MT7621
> - tristate "MediaTek MT7621 PCI Controller"
> - depends on RALINK
> - select PCI_DRIVERS_GENERIC
> - help
> - This selects a driver for the MediaTek MT7621 PCI Controller.
> -
> diff --git a/drivers/staging/mt7621-pci/Makefile b/drivers/staging/mt7621-pci/Makefile
> deleted file mode 100644
> index f4e651cf7ce3..000000000000
> --- a/drivers/staging/mt7621-pci/Makefile
> +++ /dev/null
> @@ -1,2 +0,0 @@
> -# SPDX-License-Identifier: GPL-2.0
> -obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> diff --git a/drivers/staging/mt7621-pci/TODO b/drivers/staging/mt7621-pci/TODO
> deleted file mode 100644
> index d674a9ac85c1..000000000000
> --- a/drivers/staging/mt7621-pci/TODO
> +++ /dev/null
> @@ -1,4 +0,0 @@
> -
> -- general code review and cleanup
> -
> -Cc: NeilBrown <[email protected]>
> diff --git a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt b/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> deleted file mode 100644
> index 327a68267309..000000000000
> --- a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> +++ /dev/null
> @@ -1,104 +0,0 @@
> -MediaTek MT7621 PCIe controller
> -
> -Required properties:
> -- compatible: "mediatek,mt7621-pci"
> -- device_type: Must be "pci"
> -- reg: Base addresses and lengths of the PCIe subsys and root ports.
> -- bus-range: Range of bus numbers associated with this controller.
> -- #address-cells: Address representation for root ports (must be 3)
> -- pinctrl-names : The pin control state names.
> -- pinctrl-0: The "default" pinctrl state.
> -- #size-cells: Size representation for root ports (must be 2)
> -- ranges: Ranges for the PCI memory and I/O regions.
> -- #interrupt-cells: Must be 1
> -- interrupt-map-mask and interrupt-map: Standard PCI IRQ mapping properties.
> - Please refer to the standard PCI bus binding document for a more detailed
> - explanation.
> -- status: either "disabled" or "okay".
> -- resets: Must contain an entry for each entry in reset-names.
> - See ../reset/reset.txt for details.
> -- reset-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> - root ports.
> -- clocks: Must contain an entry for each entry in clock-names.
> - See ../clocks/clock-bindings.txt for details.
> -- clock-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> - root ports.
> -- reset-gpios: GPIO specs for the reset pins.
> -
> -In addition, the device tree node must have sub-nodes describing each PCIe port
> -interface, having the following mandatory properties:
> -
> -Required properties:
> -- reg: Only the first four bytes are used to refer to the correct bus number
> - and device number.
> -- #address-cells: Must be 3
> -- #size-cells: Must be 2
> -- ranges: Sub-ranges distributed from the PCIe controller node. An empty
> - property is sufficient.
> -- bus-range: Range of bus numbers associated with this port.
> -
> -Example for MT7621:
> -
> - pcie: pcie@1e140000 {
> - compatible = "mediatek,mt7621-pci";
> - reg = <0x1e140000 0x100 /* host-pci bridge registers */
> - 0x1e142000 0x100 /* pcie port 0 RC control registers */
> - 0x1e143000 0x100 /* pcie port 1 RC control registers */
> - 0x1e144000 0x100>; /* pcie port 2 RC control registers */
> -
> - #address-cells = <3>;
> - #size-cells = <2>;
> -
> - pinctrl-names = "default";
> - pinctrl-0 = <&pcie_pins>;
> -
> - device_type = "pci";
> -
> - bus-range = <0 255>;
> - ranges = <
> - 0x02000000 0 0x00000000 0x60000000 0 0x10000000 /* pci memory */
> - 0x01000000 0 0x00000000 0x1e160000 0 0x00010000 /* io space */
> - >;
> -
> - #interrupt-cells = <1>;
> - interrupt-map-mask = <0xF0000 0 0 1>;
> - interrupt-map = <0x10000 0 0 1 &gic GIC_SHARED 4 IRQ_TYPE_LEVEL_HIGH>,
> - <0x20000 0 0 1 &gic GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH>,
> - <0x30000 0 0 1 &gic GIC_SHARED 25 IRQ_TYPE_LEVEL_HIGH>;
> -
> - status = "disabled";
> -
> - resets = <&rstctrl 24 &rstctrl 25 &rstctrl 26>;
> - reset-names = "pcie0", "pcie1", "pcie2";
> - clocks = <&clkctrl 24 &clkctrl 25 &clkctrl 26>;
> - clock-names = "pcie0", "pcie1", "pcie2";
> -
> - reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>,
> - <&gpio 8 GPIO_ACTIVE_LOW>,
> - <&gpio 7 GPIO_ACTIVE_LOW>;
> -
> - pcie@0,0 {
> - reg = <0x0000 0 0 0 0>;
> - #address-cells = <3>;
> - #size-cells = <2>;
> - ranges;
> - bus-range = <0x00 0xff>;
> - };
> -
> - pcie@1,0 {
> - reg = <0x0800 0 0 0 0>;
> - #address-cells = <3>;
> - #size-cells = <2>;
> - ranges;
> - bus-range = <0x00 0xff>;
> - };
> -
> - pcie@2,0 {
> - reg = <0x1000 0 0 0 0>;
> - #address-cells = <3>;
> - #size-cells = <2>;
> - ranges;
> - bus-range = <0x00 0xff>;
> - };
> - };
> -
> --
> 2.25.1
>

2021-08-05 10:45:43

by Sergio Paracuellos

[permalink] [raw]
Subject: Re: [PATCH v2 2/3] PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver

Hi Lorenzo,

On Thu, Aug 5, 2021 at 12:32 PM Lorenzo Pieralisi
<[email protected]> wrote:
>
> On Wed, Jun 09, 2021 at 04:01:58PM +0200, Sergio Paracuellos wrote:
> > Add driver for the PCIe controller of the MT7621 SoC.
> >
> > Acked-by: Greg Kroah-Hartman <[email protected]>
> > Signed-off-by: Sergio Paracuellos <[email protected]>
> > ---
> > arch/mips/ralink/Kconfig | 2 +-
> > drivers/pci/controller/Kconfig | 8 ++
> > drivers/pci/controller/Makefile | 1 +
> > .../controller}/pci-mt7621.c | 0
> > drivers/staging/Kconfig | 2 -
> > drivers/staging/Makefile | 1 -
> > drivers/staging/mt7621-pci/Kconfig | 8 --
> > drivers/staging/mt7621-pci/Makefile | 2 -
> > drivers/staging/mt7621-pci/TODO | 4 -
> > .../mt7621-pci/mediatek,mt7621-pci.txt | 104 ------------------
> > 10 files changed, 10 insertions(+), 122 deletions(-)
> > rename drivers/{staging/mt7621-pci => pci/controller}/pci-mt7621.c (100%)
> > delete mode 100644 drivers/staging/mt7621-pci/Kconfig
> > delete mode 100644 drivers/staging/mt7621-pci/Makefile
> > delete mode 100644 drivers/staging/mt7621-pci/TODO
> > delete mode 100644 drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> >
> > diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
> > index ec4daa63c5e3..461e33d20c9c 100644
> > --- a/arch/mips/ralink/Kconfig
> > +++ b/arch/mips/ralink/Kconfig
> > @@ -56,7 +56,7 @@ choice
> > select MIPS_GIC
> > select COMMON_CLK
> > select CLKSRC_MIPS_GIC
> > - select HAVE_PCI if PCI_MT7621
> > + select HAVE_PCI
> > select SOC_BUS
> > endchoice
> >
> > diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
> > index 2f2c8a1729f9..6b006df87884 100644
> > --- a/drivers/pci/controller/Kconfig
> > +++ b/drivers/pci/controller/Kconfig
> > @@ -303,6 +303,14 @@ config PCIE_HISI_ERR
> > Say Y here if you want error handling support
> > for the PCIe controller's errors on HiSilicon HIP SoCs
> >
> > +config PCI_MT7621
> > + bool "MediaTek MT7621 PCI Controller"
> > + depends on (RALINK && SOC_MT7621) || (MIPS && COMPILE_TEST)
> > + select PCI_DRIVERS_GENERIC
>
> Can this be selected in arch/mips rather than here ?

No real problem for me, but I was suggested by Bjorn and Pali to put
all the driver inside 'drivers/pci/controller'. Do you mean to move
all to arch/mips or only the Kconfig part?

Thanks,
Sergio Paracuellos

>
> Thanks,
> Lorenzo
>
> > + default SOC_MT7621
> > + help
> > + This selects a driver for the MediaTek MT7621 PCI Controller.
> > +
> > source "drivers/pci/controller/dwc/Kconfig"
> > source "drivers/pci/controller/mobiveil/Kconfig"
> > source "drivers/pci/controller/cadence/Kconfig"
> > diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile
> > index 63e3880a3e87..ac902dc4e1a9 100644
> > --- a/drivers/pci/controller/Makefile
> > +++ b/drivers/pci/controller/Makefile
> > @@ -36,6 +36,7 @@ obj-$(CONFIG_VMD) += vmd.o
> > obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o
> > obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
> > obj-$(CONFIG_PCIE_HISI_ERR) += pcie-hisi-error.o
> > +obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> > # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
> > obj-y += dwc/
> > obj-y += mobiveil/
> > diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/pci/controller/pci-mt7621.c
> > similarity index 100%
> > rename from drivers/staging/mt7621-pci/pci-mt7621.c
> > rename to drivers/pci/controller/pci-mt7621.c
> > diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
> > index b7ae5bdc4eb5..9a21d730ab2b 100644
> > --- a/drivers/staging/Kconfig
> > +++ b/drivers/staging/Kconfig
> > @@ -86,8 +86,6 @@ source "drivers/staging/vc04_services/Kconfig"
> >
> > source "drivers/staging/pi433/Kconfig"
> >
> > -source "drivers/staging/mt7621-pci/Kconfig"
> > -
> > source "drivers/staging/mt7621-dma/Kconfig"
> >
> > source "drivers/staging/ralink-gdma/Kconfig"
> > diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
> > index 075c979bfe7c..b7b4916761d4 100644
> > --- a/drivers/staging/Makefile
> > +++ b/drivers/staging/Makefile
> > @@ -33,7 +33,6 @@ obj-$(CONFIG_KS7010) += ks7010/
> > obj-$(CONFIG_GREYBUS) += greybus/
> > obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/
> > obj-$(CONFIG_PI433) += pi433/
> > -obj-$(CONFIG_PCI_MT7621) += mt7621-pci/
> > obj-$(CONFIG_SOC_MT7621) += mt7621-dma/
> > obj-$(CONFIG_DMA_RALINK) += ralink-gdma/
> > obj-$(CONFIG_SOC_MT7621) += mt7621-dts/
> > diff --git a/drivers/staging/mt7621-pci/Kconfig b/drivers/staging/mt7621-pci/Kconfig
> > deleted file mode 100644
> > index ce58042f2f21..000000000000
> > --- a/drivers/staging/mt7621-pci/Kconfig
> > +++ /dev/null
> > @@ -1,8 +0,0 @@
> > -# SPDX-License-Identifier: GPL-2.0
> > -config PCI_MT7621
> > - tristate "MediaTek MT7621 PCI Controller"
> > - depends on RALINK
> > - select PCI_DRIVERS_GENERIC
> > - help
> > - This selects a driver for the MediaTek MT7621 PCI Controller.
> > -
> > diff --git a/drivers/staging/mt7621-pci/Makefile b/drivers/staging/mt7621-pci/Makefile
> > deleted file mode 100644
> > index f4e651cf7ce3..000000000000
> > --- a/drivers/staging/mt7621-pci/Makefile
> > +++ /dev/null
> > @@ -1,2 +0,0 @@
> > -# SPDX-License-Identifier: GPL-2.0
> > -obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> > diff --git a/drivers/staging/mt7621-pci/TODO b/drivers/staging/mt7621-pci/TODO
> > deleted file mode 100644
> > index d674a9ac85c1..000000000000
> > --- a/drivers/staging/mt7621-pci/TODO
> > +++ /dev/null
> > @@ -1,4 +0,0 @@
> > -
> > -- general code review and cleanup
> > -
> > -Cc: NeilBrown <[email protected]>
> > diff --git a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt b/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > deleted file mode 100644
> > index 327a68267309..000000000000
> > --- a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > +++ /dev/null
> > @@ -1,104 +0,0 @@
> > -MediaTek MT7621 PCIe controller
> > -
> > -Required properties:
> > -- compatible: "mediatek,mt7621-pci"
> > -- device_type: Must be "pci"
> > -- reg: Base addresses and lengths of the PCIe subsys and root ports.
> > -- bus-range: Range of bus numbers associated with this controller.
> > -- #address-cells: Address representation for root ports (must be 3)
> > -- pinctrl-names : The pin control state names.
> > -- pinctrl-0: The "default" pinctrl state.
> > -- #size-cells: Size representation for root ports (must be 2)
> > -- ranges: Ranges for the PCI memory and I/O regions.
> > -- #interrupt-cells: Must be 1
> > -- interrupt-map-mask and interrupt-map: Standard PCI IRQ mapping properties.
> > - Please refer to the standard PCI bus binding document for a more detailed
> > - explanation.
> > -- status: either "disabled" or "okay".
> > -- resets: Must contain an entry for each entry in reset-names.
> > - See ../reset/reset.txt for details.
> > -- reset-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> > - root ports.
> > -- clocks: Must contain an entry for each entry in clock-names.
> > - See ../clocks/clock-bindings.txt for details.
> > -- clock-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> > - root ports.
> > -- reset-gpios: GPIO specs for the reset pins.
> > -
> > -In addition, the device tree node must have sub-nodes describing each PCIe port
> > -interface, having the following mandatory properties:
> > -
> > -Required properties:
> > -- reg: Only the first four bytes are used to refer to the correct bus number
> > - and device number.
> > -- #address-cells: Must be 3
> > -- #size-cells: Must be 2
> > -- ranges: Sub-ranges distributed from the PCIe controller node. An empty
> > - property is sufficient.
> > -- bus-range: Range of bus numbers associated with this port.
> > -
> > -Example for MT7621:
> > -
> > - pcie: pcie@1e140000 {
> > - compatible = "mediatek,mt7621-pci";
> > - reg = <0x1e140000 0x100 /* host-pci bridge registers */
> > - 0x1e142000 0x100 /* pcie port 0 RC control registers */
> > - 0x1e143000 0x100 /* pcie port 1 RC control registers */
> > - 0x1e144000 0x100>; /* pcie port 2 RC control registers */
> > -
> > - #address-cells = <3>;
> > - #size-cells = <2>;
> > -
> > - pinctrl-names = "default";
> > - pinctrl-0 = <&pcie_pins>;
> > -
> > - device_type = "pci";
> > -
> > - bus-range = <0 255>;
> > - ranges = <
> > - 0x02000000 0 0x00000000 0x60000000 0 0x10000000 /* pci memory */
> > - 0x01000000 0 0x00000000 0x1e160000 0 0x00010000 /* io space */
> > - >;
> > -
> > - #interrupt-cells = <1>;
> > - interrupt-map-mask = <0xF0000 0 0 1>;
> > - interrupt-map = <0x10000 0 0 1 &gic GIC_SHARED 4 IRQ_TYPE_LEVEL_HIGH>,
> > - <0x20000 0 0 1 &gic GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH>,
> > - <0x30000 0 0 1 &gic GIC_SHARED 25 IRQ_TYPE_LEVEL_HIGH>;
> > -
> > - status = "disabled";
> > -
> > - resets = <&rstctrl 24 &rstctrl 25 &rstctrl 26>;
> > - reset-names = "pcie0", "pcie1", "pcie2";
> > - clocks = <&clkctrl 24 &clkctrl 25 &clkctrl 26>;
> > - clock-names = "pcie0", "pcie1", "pcie2";
> > -
> > - reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>,
> > - <&gpio 8 GPIO_ACTIVE_LOW>,
> > - <&gpio 7 GPIO_ACTIVE_LOW>;
> > -
> > - pcie@0,0 {
> > - reg = <0x0000 0 0 0 0>;
> > - #address-cells = <3>;
> > - #size-cells = <2>;
> > - ranges;
> > - bus-range = <0x00 0xff>;
> > - };
> > -
> > - pcie@1,0 {
> > - reg = <0x0800 0 0 0 0>;
> > - #address-cells = <3>;
> > - #size-cells = <2>;
> > - ranges;
> > - bus-range = <0x00 0xff>;
> > - };
> > -
> > - pcie@2,0 {
> > - reg = <0x1000 0 0 0 0>;
> > - #address-cells = <3>;
> > - #size-cells = <2>;
> > - ranges;
> > - bus-range = <0x00 0xff>;
> > - };
> > - };
> > -
> > --
> > 2.25.1
> >

2021-08-05 10:50:48

by Lorenzo Pieralisi

[permalink] [raw]
Subject: Re: [PATCH v2 2/3] PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver

On Thu, Aug 05, 2021 at 12:40:02PM +0200, Sergio Paracuellos wrote:
> Hi Lorenzo,
>
> On Thu, Aug 5, 2021 at 12:32 PM Lorenzo Pieralisi
> <[email protected]> wrote:
> >
> > On Wed, Jun 09, 2021 at 04:01:58PM +0200, Sergio Paracuellos wrote:
> > > Add driver for the PCIe controller of the MT7621 SoC.
> > >
> > > Acked-by: Greg Kroah-Hartman <[email protected]>
> > > Signed-off-by: Sergio Paracuellos <[email protected]>
> > > ---
> > > arch/mips/ralink/Kconfig | 2 +-
> > > drivers/pci/controller/Kconfig | 8 ++
> > > drivers/pci/controller/Makefile | 1 +
> > > .../controller}/pci-mt7621.c | 0
> > > drivers/staging/Kconfig | 2 -
> > > drivers/staging/Makefile | 1 -
> > > drivers/staging/mt7621-pci/Kconfig | 8 --
> > > drivers/staging/mt7621-pci/Makefile | 2 -
> > > drivers/staging/mt7621-pci/TODO | 4 -
> > > .../mt7621-pci/mediatek,mt7621-pci.txt | 104 ------------------
> > > 10 files changed, 10 insertions(+), 122 deletions(-)
> > > rename drivers/{staging/mt7621-pci => pci/controller}/pci-mt7621.c (100%)
> > > delete mode 100644 drivers/staging/mt7621-pci/Kconfig
> > > delete mode 100644 drivers/staging/mt7621-pci/Makefile
> > > delete mode 100644 drivers/staging/mt7621-pci/TODO
> > > delete mode 100644 drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > >
> > > diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
> > > index ec4daa63c5e3..461e33d20c9c 100644
> > > --- a/arch/mips/ralink/Kconfig
> > > +++ b/arch/mips/ralink/Kconfig
> > > @@ -56,7 +56,7 @@ choice
> > > select MIPS_GIC
> > > select COMMON_CLK
> > > select CLKSRC_MIPS_GIC
> > > - select HAVE_PCI if PCI_MT7621
> > > + select HAVE_PCI
> > > select SOC_BUS
> > > endchoice
> > >
> > > diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
> > > index 2f2c8a1729f9..6b006df87884 100644
> > > --- a/drivers/pci/controller/Kconfig
> > > +++ b/drivers/pci/controller/Kconfig
> > > @@ -303,6 +303,14 @@ config PCIE_HISI_ERR
> > > Say Y here if you want error handling support
> > > for the PCIe controller's errors on HiSilicon HIP SoCs
> > >
> > > +config PCI_MT7621
> > > + bool "MediaTek MT7621 PCI Controller"
> > > + depends on (RALINK && SOC_MT7621) || (MIPS && COMPILE_TEST)
> > > + select PCI_DRIVERS_GENERIC
> >
> > Can this be selected in arch/mips rather than here ?
>
> No real problem for me, but I was suggested by Bjorn and Pali to put
> all the driver inside 'drivers/pci/controller'. Do you mean to move
> all to arch/mips or only the Kconfig part?

Only:

select PCI_DRIVERS_GENERIC

given that's an arch/mips internal.

Thanks,
Lorenzo

>
> Thanks,
> Sergio Paracuellos
>
> >
> > Thanks,
> > Lorenzo
> >
> > > + default SOC_MT7621
> > > + help
> > > + This selects a driver for the MediaTek MT7621 PCI Controller.
> > > +
> > > source "drivers/pci/controller/dwc/Kconfig"
> > > source "drivers/pci/controller/mobiveil/Kconfig"
> > > source "drivers/pci/controller/cadence/Kconfig"
> > > diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile
> > > index 63e3880a3e87..ac902dc4e1a9 100644
> > > --- a/drivers/pci/controller/Makefile
> > > +++ b/drivers/pci/controller/Makefile
> > > @@ -36,6 +36,7 @@ obj-$(CONFIG_VMD) += vmd.o
> > > obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o
> > > obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
> > > obj-$(CONFIG_PCIE_HISI_ERR) += pcie-hisi-error.o
> > > +obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> > > # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
> > > obj-y += dwc/
> > > obj-y += mobiveil/
> > > diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/pci/controller/pci-mt7621.c
> > > similarity index 100%
> > > rename from drivers/staging/mt7621-pci/pci-mt7621.c
> > > rename to drivers/pci/controller/pci-mt7621.c
> > > diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
> > > index b7ae5bdc4eb5..9a21d730ab2b 100644
> > > --- a/drivers/staging/Kconfig
> > > +++ b/drivers/staging/Kconfig
> > > @@ -86,8 +86,6 @@ source "drivers/staging/vc04_services/Kconfig"
> > >
> > > source "drivers/staging/pi433/Kconfig"
> > >
> > > -source "drivers/staging/mt7621-pci/Kconfig"
> > > -
> > > source "drivers/staging/mt7621-dma/Kconfig"
> > >
> > > source "drivers/staging/ralink-gdma/Kconfig"
> > > diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
> > > index 075c979bfe7c..b7b4916761d4 100644
> > > --- a/drivers/staging/Makefile
> > > +++ b/drivers/staging/Makefile
> > > @@ -33,7 +33,6 @@ obj-$(CONFIG_KS7010) += ks7010/
> > > obj-$(CONFIG_GREYBUS) += greybus/
> > > obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/
> > > obj-$(CONFIG_PI433) += pi433/
> > > -obj-$(CONFIG_PCI_MT7621) += mt7621-pci/
> > > obj-$(CONFIG_SOC_MT7621) += mt7621-dma/
> > > obj-$(CONFIG_DMA_RALINK) += ralink-gdma/
> > > obj-$(CONFIG_SOC_MT7621) += mt7621-dts/
> > > diff --git a/drivers/staging/mt7621-pci/Kconfig b/drivers/staging/mt7621-pci/Kconfig
> > > deleted file mode 100644
> > > index ce58042f2f21..000000000000
> > > --- a/drivers/staging/mt7621-pci/Kconfig
> > > +++ /dev/null
> > > @@ -1,8 +0,0 @@
> > > -# SPDX-License-Identifier: GPL-2.0
> > > -config PCI_MT7621
> > > - tristate "MediaTek MT7621 PCI Controller"
> > > - depends on RALINK
> > > - select PCI_DRIVERS_GENERIC
> > > - help
> > > - This selects a driver for the MediaTek MT7621 PCI Controller.
> > > -
> > > diff --git a/drivers/staging/mt7621-pci/Makefile b/drivers/staging/mt7621-pci/Makefile
> > > deleted file mode 100644
> > > index f4e651cf7ce3..000000000000
> > > --- a/drivers/staging/mt7621-pci/Makefile
> > > +++ /dev/null
> > > @@ -1,2 +0,0 @@
> > > -# SPDX-License-Identifier: GPL-2.0
> > > -obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> > > diff --git a/drivers/staging/mt7621-pci/TODO b/drivers/staging/mt7621-pci/TODO
> > > deleted file mode 100644
> > > index d674a9ac85c1..000000000000
> > > --- a/drivers/staging/mt7621-pci/TODO
> > > +++ /dev/null
> > > @@ -1,4 +0,0 @@
> > > -
> > > -- general code review and cleanup
> > > -
> > > -Cc: NeilBrown <[email protected]>
> > > diff --git a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt b/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > > deleted file mode 100644
> > > index 327a68267309..000000000000
> > > --- a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > > +++ /dev/null
> > > @@ -1,104 +0,0 @@
> > > -MediaTek MT7621 PCIe controller
> > > -
> > > -Required properties:
> > > -- compatible: "mediatek,mt7621-pci"
> > > -- device_type: Must be "pci"
> > > -- reg: Base addresses and lengths of the PCIe subsys and root ports.
> > > -- bus-range: Range of bus numbers associated with this controller.
> > > -- #address-cells: Address representation for root ports (must be 3)
> > > -- pinctrl-names : The pin control state names.
> > > -- pinctrl-0: The "default" pinctrl state.
> > > -- #size-cells: Size representation for root ports (must be 2)
> > > -- ranges: Ranges for the PCI memory and I/O regions.
> > > -- #interrupt-cells: Must be 1
> > > -- interrupt-map-mask and interrupt-map: Standard PCI IRQ mapping properties.
> > > - Please refer to the standard PCI bus binding document for a more detailed
> > > - explanation.
> > > -- status: either "disabled" or "okay".
> > > -- resets: Must contain an entry for each entry in reset-names.
> > > - See ../reset/reset.txt for details.
> > > -- reset-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> > > - root ports.
> > > -- clocks: Must contain an entry for each entry in clock-names.
> > > - See ../clocks/clock-bindings.txt for details.
> > > -- clock-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> > > - root ports.
> > > -- reset-gpios: GPIO specs for the reset pins.
> > > -
> > > -In addition, the device tree node must have sub-nodes describing each PCIe port
> > > -interface, having the following mandatory properties:
> > > -
> > > -Required properties:
> > > -- reg: Only the first four bytes are used to refer to the correct bus number
> > > - and device number.
> > > -- #address-cells: Must be 3
> > > -- #size-cells: Must be 2
> > > -- ranges: Sub-ranges distributed from the PCIe controller node. An empty
> > > - property is sufficient.
> > > -- bus-range: Range of bus numbers associated with this port.
> > > -
> > > -Example for MT7621:
> > > -
> > > - pcie: pcie@1e140000 {
> > > - compatible = "mediatek,mt7621-pci";
> > > - reg = <0x1e140000 0x100 /* host-pci bridge registers */
> > > - 0x1e142000 0x100 /* pcie port 0 RC control registers */
> > > - 0x1e143000 0x100 /* pcie port 1 RC control registers */
> > > - 0x1e144000 0x100>; /* pcie port 2 RC control registers */
> > > -
> > > - #address-cells = <3>;
> > > - #size-cells = <2>;
> > > -
> > > - pinctrl-names = "default";
> > > - pinctrl-0 = <&pcie_pins>;
> > > -
> > > - device_type = "pci";
> > > -
> > > - bus-range = <0 255>;
> > > - ranges = <
> > > - 0x02000000 0 0x00000000 0x60000000 0 0x10000000 /* pci memory */
> > > - 0x01000000 0 0x00000000 0x1e160000 0 0x00010000 /* io space */
> > > - >;
> > > -
> > > - #interrupt-cells = <1>;
> > > - interrupt-map-mask = <0xF0000 0 0 1>;
> > > - interrupt-map = <0x10000 0 0 1 &gic GIC_SHARED 4 IRQ_TYPE_LEVEL_HIGH>,
> > > - <0x20000 0 0 1 &gic GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH>,
> > > - <0x30000 0 0 1 &gic GIC_SHARED 25 IRQ_TYPE_LEVEL_HIGH>;
> > > -
> > > - status = "disabled";
> > > -
> > > - resets = <&rstctrl 24 &rstctrl 25 &rstctrl 26>;
> > > - reset-names = "pcie0", "pcie1", "pcie2";
> > > - clocks = <&clkctrl 24 &clkctrl 25 &clkctrl 26>;
> > > - clock-names = "pcie0", "pcie1", "pcie2";
> > > -
> > > - reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>,
> > > - <&gpio 8 GPIO_ACTIVE_LOW>,
> > > - <&gpio 7 GPIO_ACTIVE_LOW>;
> > > -
> > > - pcie@0,0 {
> > > - reg = <0x0000 0 0 0 0>;
> > > - #address-cells = <3>;
> > > - #size-cells = <2>;
> > > - ranges;
> > > - bus-range = <0x00 0xff>;
> > > - };
> > > -
> > > - pcie@1,0 {
> > > - reg = <0x0800 0 0 0 0>;
> > > - #address-cells = <3>;
> > > - #size-cells = <2>;
> > > - ranges;
> > > - bus-range = <0x00 0xff>;
> > > - };
> > > -
> > > - pcie@2,0 {
> > > - reg = <0x1000 0 0 0 0>;
> > > - #address-cells = <3>;
> > > - #size-cells = <2>;
> > > - ranges;
> > > - bus-range = <0x00 0xff>;
> > > - };
> > > - };
> > > -
> > > --
> > > 2.25.1
> > >

2021-08-05 10:52:06

by Sergio Paracuellos

[permalink] [raw]
Subject: Re: [PATCH v2 2/3] PCI: mt7621: Add MediaTek MT7621 PCIe host controller driver

On Thu, Aug 5, 2021 at 12:45 PM Lorenzo Pieralisi
<[email protected]> wrote:
>
> On Thu, Aug 05, 2021 at 12:40:02PM +0200, Sergio Paracuellos wrote:
> > Hi Lorenzo,
> >
> > On Thu, Aug 5, 2021 at 12:32 PM Lorenzo Pieralisi
> > <[email protected]> wrote:
> > >
> > > On Wed, Jun 09, 2021 at 04:01:58PM +0200, Sergio Paracuellos wrote:
> > > > Add driver for the PCIe controller of the MT7621 SoC.
> > > >
> > > > Acked-by: Greg Kroah-Hartman <[email protected]>
> > > > Signed-off-by: Sergio Paracuellos <[email protected]>
> > > > ---
> > > > arch/mips/ralink/Kconfig | 2 +-
> > > > drivers/pci/controller/Kconfig | 8 ++
> > > > drivers/pci/controller/Makefile | 1 +
> > > > .../controller}/pci-mt7621.c | 0
> > > > drivers/staging/Kconfig | 2 -
> > > > drivers/staging/Makefile | 1 -
> > > > drivers/staging/mt7621-pci/Kconfig | 8 --
> > > > drivers/staging/mt7621-pci/Makefile | 2 -
> > > > drivers/staging/mt7621-pci/TODO | 4 -
> > > > .../mt7621-pci/mediatek,mt7621-pci.txt | 104 ------------------
> > > > 10 files changed, 10 insertions(+), 122 deletions(-)
> > > > rename drivers/{staging/mt7621-pci => pci/controller}/pci-mt7621.c (100%)
> > > > delete mode 100644 drivers/staging/mt7621-pci/Kconfig
> > > > delete mode 100644 drivers/staging/mt7621-pci/Makefile
> > > > delete mode 100644 drivers/staging/mt7621-pci/TODO
> > > > delete mode 100644 drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > > >
> > > > diff --git a/arch/mips/ralink/Kconfig b/arch/mips/ralink/Kconfig
> > > > index ec4daa63c5e3..461e33d20c9c 100644
> > > > --- a/arch/mips/ralink/Kconfig
> > > > +++ b/arch/mips/ralink/Kconfig
> > > > @@ -56,7 +56,7 @@ choice
> > > > select MIPS_GIC
> > > > select COMMON_CLK
> > > > select CLKSRC_MIPS_GIC
> > > > - select HAVE_PCI if PCI_MT7621
> > > > + select HAVE_PCI
> > > > select SOC_BUS
> > > > endchoice
> > > >
> > > > diff --git a/drivers/pci/controller/Kconfig b/drivers/pci/controller/Kconfig
> > > > index 2f2c8a1729f9..6b006df87884 100644
> > > > --- a/drivers/pci/controller/Kconfig
> > > > +++ b/drivers/pci/controller/Kconfig
> > > > @@ -303,6 +303,14 @@ config PCIE_HISI_ERR
> > > > Say Y here if you want error handling support
> > > > for the PCIe controller's errors on HiSilicon HIP SoCs
> > > >
> > > > +config PCI_MT7621
> > > > + bool "MediaTek MT7621 PCI Controller"
> > > > + depends on (RALINK && SOC_MT7621) || (MIPS && COMPILE_TEST)
> > > > + select PCI_DRIVERS_GENERIC
> > >
> > > Can this be selected in arch/mips rather than here ?
> >
> > No real problem for me, but I was suggested by Bjorn and Pali to put
> > all the driver inside 'drivers/pci/controller'. Do you mean to move
> > all to arch/mips or only the Kconfig part?
>
> Only:
>
> select PCI_DRIVERS_GENERIC
>
> given that's an arch/mips internal.
>

Ah, ok. I misread your comment, sorry. I will put it there and send v3.

Thanks,
Sergio Paracuellos

> Thanks,
> Lorenzo
>
> >
> > Thanks,
> > Sergio Paracuellos
> >
> > >
> > > Thanks,
> > > Lorenzo
> > >
> > > > + default SOC_MT7621
> > > > + help
> > > > + This selects a driver for the MediaTek MT7621 PCI Controller.
> > > > +
> > > > source "drivers/pci/controller/dwc/Kconfig"
> > > > source "drivers/pci/controller/mobiveil/Kconfig"
> > > > source "drivers/pci/controller/cadence/Kconfig"
> > > > diff --git a/drivers/pci/controller/Makefile b/drivers/pci/controller/Makefile
> > > > index 63e3880a3e87..ac902dc4e1a9 100644
> > > > --- a/drivers/pci/controller/Makefile
> > > > +++ b/drivers/pci/controller/Makefile
> > > > @@ -36,6 +36,7 @@ obj-$(CONFIG_VMD) += vmd.o
> > > > obj-$(CONFIG_PCIE_BRCMSTB) += pcie-brcmstb.o
> > > > obj-$(CONFIG_PCI_LOONGSON) += pci-loongson.o
> > > > obj-$(CONFIG_PCIE_HISI_ERR) += pcie-hisi-error.o
> > > > +obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> > > > # pcie-hisi.o quirks are needed even without CONFIG_PCIE_DW
> > > > obj-y += dwc/
> > > > obj-y += mobiveil/
> > > > diff --git a/drivers/staging/mt7621-pci/pci-mt7621.c b/drivers/pci/controller/pci-mt7621.c
> > > > similarity index 100%
> > > > rename from drivers/staging/mt7621-pci/pci-mt7621.c
> > > > rename to drivers/pci/controller/pci-mt7621.c
> > > > diff --git a/drivers/staging/Kconfig b/drivers/staging/Kconfig
> > > > index b7ae5bdc4eb5..9a21d730ab2b 100644
> > > > --- a/drivers/staging/Kconfig
> > > > +++ b/drivers/staging/Kconfig
> > > > @@ -86,8 +86,6 @@ source "drivers/staging/vc04_services/Kconfig"
> > > >
> > > > source "drivers/staging/pi433/Kconfig"
> > > >
> > > > -source "drivers/staging/mt7621-pci/Kconfig"
> > > > -
> > > > source "drivers/staging/mt7621-dma/Kconfig"
> > > >
> > > > source "drivers/staging/ralink-gdma/Kconfig"
> > > > diff --git a/drivers/staging/Makefile b/drivers/staging/Makefile
> > > > index 075c979bfe7c..b7b4916761d4 100644
> > > > --- a/drivers/staging/Makefile
> > > > +++ b/drivers/staging/Makefile
> > > > @@ -33,7 +33,6 @@ obj-$(CONFIG_KS7010) += ks7010/
> > > > obj-$(CONFIG_GREYBUS) += greybus/
> > > > obj-$(CONFIG_BCM2835_VCHIQ) += vc04_services/
> > > > obj-$(CONFIG_PI433) += pi433/
> > > > -obj-$(CONFIG_PCI_MT7621) += mt7621-pci/
> > > > obj-$(CONFIG_SOC_MT7621) += mt7621-dma/
> > > > obj-$(CONFIG_DMA_RALINK) += ralink-gdma/
> > > > obj-$(CONFIG_SOC_MT7621) += mt7621-dts/
> > > > diff --git a/drivers/staging/mt7621-pci/Kconfig b/drivers/staging/mt7621-pci/Kconfig
> > > > deleted file mode 100644
> > > > index ce58042f2f21..000000000000
> > > > --- a/drivers/staging/mt7621-pci/Kconfig
> > > > +++ /dev/null
> > > > @@ -1,8 +0,0 @@
> > > > -# SPDX-License-Identifier: GPL-2.0
> > > > -config PCI_MT7621
> > > > - tristate "MediaTek MT7621 PCI Controller"
> > > > - depends on RALINK
> > > > - select PCI_DRIVERS_GENERIC
> > > > - help
> > > > - This selects a driver for the MediaTek MT7621 PCI Controller.
> > > > -
> > > > diff --git a/drivers/staging/mt7621-pci/Makefile b/drivers/staging/mt7621-pci/Makefile
> > > > deleted file mode 100644
> > > > index f4e651cf7ce3..000000000000
> > > > --- a/drivers/staging/mt7621-pci/Makefile
> > > > +++ /dev/null
> > > > @@ -1,2 +0,0 @@
> > > > -# SPDX-License-Identifier: GPL-2.0
> > > > -obj-$(CONFIG_PCI_MT7621) += pci-mt7621.o
> > > > diff --git a/drivers/staging/mt7621-pci/TODO b/drivers/staging/mt7621-pci/TODO
> > > > deleted file mode 100644
> > > > index d674a9ac85c1..000000000000
> > > > --- a/drivers/staging/mt7621-pci/TODO
> > > > +++ /dev/null
> > > > @@ -1,4 +0,0 @@
> > > > -
> > > > -- general code review and cleanup
> > > > -
> > > > -Cc: NeilBrown <[email protected]>
> > > > diff --git a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt b/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > > > deleted file mode 100644
> > > > index 327a68267309..000000000000
> > > > --- a/drivers/staging/mt7621-pci/mediatek,mt7621-pci.txt
> > > > +++ /dev/null
> > > > @@ -1,104 +0,0 @@
> > > > -MediaTek MT7621 PCIe controller
> > > > -
> > > > -Required properties:
> > > > -- compatible: "mediatek,mt7621-pci"
> > > > -- device_type: Must be "pci"
> > > > -- reg: Base addresses and lengths of the PCIe subsys and root ports.
> > > > -- bus-range: Range of bus numbers associated with this controller.
> > > > -- #address-cells: Address representation for root ports (must be 3)
> > > > -- pinctrl-names : The pin control state names.
> > > > -- pinctrl-0: The "default" pinctrl state.
> > > > -- #size-cells: Size representation for root ports (must be 2)
> > > > -- ranges: Ranges for the PCI memory and I/O regions.
> > > > -- #interrupt-cells: Must be 1
> > > > -- interrupt-map-mask and interrupt-map: Standard PCI IRQ mapping properties.
> > > > - Please refer to the standard PCI bus binding document for a more detailed
> > > > - explanation.
> > > > -- status: either "disabled" or "okay".
> > > > -- resets: Must contain an entry for each entry in reset-names.
> > > > - See ../reset/reset.txt for details.
> > > > -- reset-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> > > > - root ports.
> > > > -- clocks: Must contain an entry for each entry in clock-names.
> > > > - See ../clocks/clock-bindings.txt for details.
> > > > -- clock-names: Must be "pcie0", "pcie1", "pcieN"... based on the number of
> > > > - root ports.
> > > > -- reset-gpios: GPIO specs for the reset pins.
> > > > -
> > > > -In addition, the device tree node must have sub-nodes describing each PCIe port
> > > > -interface, having the following mandatory properties:
> > > > -
> > > > -Required properties:
> > > > -- reg: Only the first four bytes are used to refer to the correct bus number
> > > > - and device number.
> > > > -- #address-cells: Must be 3
> > > > -- #size-cells: Must be 2
> > > > -- ranges: Sub-ranges distributed from the PCIe controller node. An empty
> > > > - property is sufficient.
> > > > -- bus-range: Range of bus numbers associated with this port.
> > > > -
> > > > -Example for MT7621:
> > > > -
> > > > - pcie: pcie@1e140000 {
> > > > - compatible = "mediatek,mt7621-pci";
> > > > - reg = <0x1e140000 0x100 /* host-pci bridge registers */
> > > > - 0x1e142000 0x100 /* pcie port 0 RC control registers */
> > > > - 0x1e143000 0x100 /* pcie port 1 RC control registers */
> > > > - 0x1e144000 0x100>; /* pcie port 2 RC control registers */
> > > > -
> > > > - #address-cells = <3>;
> > > > - #size-cells = <2>;
> > > > -
> > > > - pinctrl-names = "default";
> > > > - pinctrl-0 = <&pcie_pins>;
> > > > -
> > > > - device_type = "pci";
> > > > -
> > > > - bus-range = <0 255>;
> > > > - ranges = <
> > > > - 0x02000000 0 0x00000000 0x60000000 0 0x10000000 /* pci memory */
> > > > - 0x01000000 0 0x00000000 0x1e160000 0 0x00010000 /* io space */
> > > > - >;
> > > > -
> > > > - #interrupt-cells = <1>;
> > > > - interrupt-map-mask = <0xF0000 0 0 1>;
> > > > - interrupt-map = <0x10000 0 0 1 &gic GIC_SHARED 4 IRQ_TYPE_LEVEL_HIGH>,
> > > > - <0x20000 0 0 1 &gic GIC_SHARED 24 IRQ_TYPE_LEVEL_HIGH>,
> > > > - <0x30000 0 0 1 &gic GIC_SHARED 25 IRQ_TYPE_LEVEL_HIGH>;
> > > > -
> > > > - status = "disabled";
> > > > -
> > > > - resets = <&rstctrl 24 &rstctrl 25 &rstctrl 26>;
> > > > - reset-names = "pcie0", "pcie1", "pcie2";
> > > > - clocks = <&clkctrl 24 &clkctrl 25 &clkctrl 26>;
> > > > - clock-names = "pcie0", "pcie1", "pcie2";
> > > > -
> > > > - reset-gpios = <&gpio 19 GPIO_ACTIVE_LOW>,
> > > > - <&gpio 8 GPIO_ACTIVE_LOW>,
> > > > - <&gpio 7 GPIO_ACTIVE_LOW>;
> > > > -
> > > > - pcie@0,0 {
> > > > - reg = <0x0000 0 0 0 0>;
> > > > - #address-cells = <3>;
> > > > - #size-cells = <2>;
> > > > - ranges;
> > > > - bus-range = <0x00 0xff>;
> > > > - };
> > > > -
> > > > - pcie@1,0 {
> > > > - reg = <0x0800 0 0 0 0>;
> > > > - #address-cells = <3>;
> > > > - #size-cells = <2>;
> > > > - ranges;
> > > > - bus-range = <0x00 0xff>;
> > > > - };
> > > > -
> > > > - pcie@2,0 {
> > > > - reg = <0x1000 0 0 0 0>;
> > > > - #address-cells = <3>;
> > > > - #size-cells = <2>;
> > > > - ranges;
> > > > - bus-range = <0x00 0xff>;
> > > > - };
> > > > - };
> > > > -
> > > > --
> > > > 2.25.1
> > > >