2021-08-06 08:32:51

by Krzysztof Kozlowski

[permalink] [raw]
Subject: [PATCH] arm64: dts: synaptics: remove unused DTSI for AS370

The as370.dtsi for Synaptics AS370 SoC does not have a user (DTS board
file), is uncompilable and untestable. It was added back in 2018. No
user appeared since that time, so assume it won't be added.

Signed-off-by: Krzysztof Kozlowski <[email protected]>
---
.../devicetree/bindings/arm/syna.txt | 4 -
arch/arm64/boot/dts/synaptics/as370.dtsi | 173 ------------------
2 files changed, 177 deletions(-)
delete mode 100644 arch/arm64/boot/dts/synaptics/as370.dtsi

diff --git a/Documentation/devicetree/bindings/arm/syna.txt b/Documentation/devicetree/bindings/arm/syna.txt
index d8b48f2edf1b..851f48ead927 100644
--- a/Documentation/devicetree/bindings/arm/syna.txt
+++ b/Documentation/devicetree/bindings/arm/syna.txt
@@ -18,10 +18,6 @@ stable binding/ABI.

---------------------------------------------------------------

-Boards with the Synaptics AS370 SoC shall have the following properties:
- Required root node property:
- compatible: "syna,as370"
-
Boards with a SoC of the Marvell Berlin family, e.g. Armada 1500
shall have the following properties:

diff --git a/arch/arm64/boot/dts/synaptics/as370.dtsi b/arch/arm64/boot/dts/synaptics/as370.dtsi
deleted file mode 100644
index 4bb5d650df9c..000000000000
--- a/arch/arm64/boot/dts/synaptics/as370.dtsi
+++ /dev/null
@@ -1,173 +0,0 @@
-// SPDX-License-Identifier: (GPL-2.0 OR MIT)
-/*
- * Copyright (C) 2018 Synaptics Incorporated
- *
- * Author: Jisheng Zhang <[email protected]>
- */
-
-#include <dt-bindings/interrupt-controller/arm-gic.h>
-
-/ {
- compatible = "syna,as370";
- interrupt-parent = <&gic>;
- #address-cells = <2>;
- #size-cells = <2>;
-
- psci {
- compatible = "arm,psci-1.0";
- method = "smc";
- };
-
- cpus {
- #address-cells = <1>;
- #size-cells = <0>;
-
- cpu0: cpu@0 {
- compatible = "arm,cortex-a53";
- device_type = "cpu";
- reg = <0x0>;
- enable-method = "psci";
- next-level-cache = <&l2>;
- cpu-idle-states = <&CPU_SLEEP_0>;
- };
-
- cpu1: cpu@1 {
- compatible = "arm,cortex-a53";
- device_type = "cpu";
- reg = <0x1>;
- enable-method = "psci";
- next-level-cache = <&l2>;
- cpu-idle-states = <&CPU_SLEEP_0>;
- };
-
- cpu2: cpu@2 {
- compatible = "arm,cortex-a53";
- device_type = "cpu";
- reg = <0x2>;
- enable-method = "psci";
- next-level-cache = <&l2>;
- cpu-idle-states = <&CPU_SLEEP_0>;
- };
-
- cpu3: cpu@3 {
- compatible = "arm,cortex-a53";
- device_type = "cpu";
- reg = <0x3>;
- enable-method = "psci";
- next-level-cache = <&l2>;
- cpu-idle-states = <&CPU_SLEEP_0>;
- };
-
- l2: cache {
- compatible = "cache";
- };
-
- idle-states {
- entry-method = "psci";
- CPU_SLEEP_0: cpu-sleep-0 {
- compatible = "arm,idle-state";
- local-timer-stop;
- arm,psci-suspend-param = <0x0010000>;
- entry-latency-us = <75>;
- exit-latency-us = <155>;
- min-residency-us = <1000>;
- };
- };
- };
-
- osc: osc {
- compatible = "fixed-clock";
- #clock-cells = <0>;
- clock-frequency = <25000000>;
- };
-
- pmu {
- compatible = "arm,cortex-a53-pmu";
- interrupts = <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
- <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
- <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
- <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
- interrupt-affinity = <&cpu0>,
- <&cpu1>,
- <&cpu2>,
- <&cpu3>;
- };
-
- timer {
- compatible = "arm,armv8-timer";
- interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
- <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
- <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>,
- <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_LOW)>;
- };
-
- soc@f7000000 {
- compatible = "simple-bus";
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0 0 0xf7000000 0x1000000>;
-
- gic: interrupt-controller@901000 {
- compatible = "arm,gic-400";
- #interrupt-cells = <3>;
- interrupt-controller;
- reg = <0x901000 0x1000>,
- <0x902000 0x2000>,
- <0x904000 0x2000>,
- <0x906000 0x2000>;
- interrupts = <GIC_PPI 9 (GIC_CPU_MASK_SIMPLE(4) | IRQ_TYPE_LEVEL_HIGH)>;
- };
-
- apb@e80000 {
- compatible = "simple-bus";
- #address-cells = <1>;
- #size-cells = <1>;
- ranges = <0 0xe80000 0x10000>;
-
- uart0: serial@c00 {
- compatible = "snps,dw-apb-uart";
- reg = <0xc00 0x100>;
- interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&osc>;
- reg-shift = <2>;
- status = "disabled";
- };
-
- gpio0: gpio@1800 {
- compatible = "snps,dw-apb-gpio";
- reg = <0x1800 0x400>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- porta: gpio-port@0 {
- compatible = "snps,dw-apb-gpio-port";
- gpio-controller;
- #gpio-cells = <2>;
- ngpios = <32>;
- reg = <0>;
- interrupt-controller;
- #interrupt-cells = <2>;
- interrupts = <GIC_SPI 40 IRQ_TYPE_LEVEL_HIGH>;
- };
- };
-
- gpio1: gpio@2000 {
- compatible = "snps,dw-apb-gpio";
- reg = <0x2000 0x400>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- portb: gpio-port@1 {
- compatible = "snps,dw-apb-gpio-port";
- gpio-controller;
- #gpio-cells = <2>;
- ngpios = <32>;
- reg = <0>;
- interrupt-controller;
- #interrupt-cells = <2>;
- interrupts = <GIC_SPI 41 IRQ_TYPE_LEVEL_HIGH>;
- };
- };
- };
- };
-};
--
2.30.2


2021-08-13 19:13:09

by Rob Herring (Arm)

[permalink] [raw]
Subject: Re: [PATCH] arm64: dts: synaptics: remove unused DTSI for AS370

On Fri, 06 Aug 2021 10:26:35 +0200, Krzysztof Kozlowski wrote:
> The as370.dtsi for Synaptics AS370 SoC does not have a user (DTS board
> file), is uncompilable and untestable. It was added back in 2018. No
> user appeared since that time, so assume it won't be added.
>
> Signed-off-by: Krzysztof Kozlowski <[email protected]>
> ---
> .../devicetree/bindings/arm/syna.txt | 4 -
> arch/arm64/boot/dts/synaptics/as370.dtsi | 173 ------------------
> 2 files changed, 177 deletions(-)
> delete mode 100644 arch/arm64/boot/dts/synaptics/as370.dtsi
>

I assume Arnd/Olof will take this.

Acked-by: Rob Herring <[email protected]>

2021-08-13 20:48:17

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] arm64: dts: synaptics: remove unused DTSI for AS370

On Fri, Aug 13, 2021 at 9:09 PM Rob Herring <[email protected]> wrote:
>
> On Fri, 06 Aug 2021 10:26:35 +0200, Krzysztof Kozlowski wrote:
> > The as370.dtsi for Synaptics AS370 SoC does not have a user (DTS board
> > file), is uncompilable and untestable. It was added back in 2018. No
> > user appeared since that time, so assume it won't be added.
> >
> > Signed-off-by: Krzysztof Kozlowski <[email protected]>
> > ---
> > .../devicetree/bindings/arm/syna.txt | 4 -
> > arch/arm64/boot/dts/synaptics/as370.dtsi | 173 ------------------
> > 2 files changed, 177 deletions(-)
> > delete mode 100644 arch/arm64/boot/dts/synaptics/as370.dtsi
> >
>
> I assume Arnd/Olof will take this.
>
> Acked-by: Rob Herring <[email protected]>

Sure, I can take that, but it would be nice to hear anything from Jisheng Zhang
about this.

I can see that the only two 64-bit Synaptics SoCs are as370 and bg4ct,
but both of them have apparently been replaced with newer versions that
never made it into the kernel: as371, as390, bg5ct, according to press
releases.

Jisheng, can you clarify whether you plan to complete the as370 support
or add the later SoCs?

Arnd

2021-08-19 06:39:59

by Jisheng Zhang

[permalink] [raw]
Subject: Re: [PATCH] arm64: dts: synaptics: remove unused DTSI for AS370

On Fri, 13 Aug 2021 22:43:26 +0200 Arnd Bergmann wrote:


>
> On Fri, Aug 13, 2021 at 9:09 PM Rob Herring <[email protected]> wrote:
> >
> > On Fri, 06 Aug 2021 10:26:35 +0200, Krzysztof Kozlowski wrote:
> > > The as370.dtsi for Synaptics AS370 SoC does not have a user (DTS board
> > > file), is uncompilable and untestable. It was added back in 2018. No
> > > user appeared since that time, so assume it won't be added.
> > >
> > > Signed-off-by: Krzysztof Kozlowski <[email protected]>
> > > ---
> > > .../devicetree/bindings/arm/syna.txt | 4 -
> > > arch/arm64/boot/dts/synaptics/as370.dtsi | 173 ------------------
> > > 2 files changed, 177 deletions(-)
> > > delete mode 100644 arch/arm64/boot/dts/synaptics/as370.dtsi
> > >
> >
> > I assume Arnd/Olof will take this.
> >
> > Acked-by: Rob Herring <[email protected]>
>
> Sure, I can take that, but it would be nice to hear anything from Jisheng Zhang
> about this.
>
> I can see that the only two 64-bit Synaptics SoCs are as370 and bg4ct,
> but both of them have apparently been replaced with newer versions that
> never made it into the kernel: as371, as390, bg5ct, according to press
> releases.
>
> Jisheng, can you clarify whether you plan to complete the as370 support
> or add the later SoCs?

Hi Arnd, Rob, Krzysztof

Sorry for being late. I was on vocation in the past several days.
As for this as370 removing, I think we'd better keep it. I planned
to submit the as370-rdk board dts two years ago, but latter I focused
on Synaptics SoCs related drivers support such as gpio, pcie, sdhci and
so on. I will send a basic as370 rdk board dts. I'm also considering
to mainline basic support for a new SoC.

Thanks

2021-08-19 08:13:24

by Arnd Bergmann

[permalink] [raw]
Subject: Re: [PATCH] arm64: dts: synaptics: remove unused DTSI for AS370

On Thu, Aug 19, 2021 at 8:38 AM Jisheng Zhang
<[email protected]> wrote:
> On Fri, 13 Aug 2021 22:43:26 +0200 Arnd Bergmann wrote:
> > On Fri, Aug 13, 2021 at 9:09 PM Rob Herring <[email protected]> wrote:
> > > On Fri, 06 Aug 2021 10:26:35 +0200, Krzysztof Kozlowski wrote:
> > > > The as370.dtsi for Synaptics AS370 SoC does not have a user (DTS board
> > > > file), is uncompilable and untestable. It was added back in 2018. No
> > > > user appeared since that time, so assume it won't be added.
> > > >
> > > > Signed-off-by: Krzysztof Kozlowski <[email protected]>
> > > > ---
> > > > .../devicetree/bindings/arm/syna.txt | 4 -
> > > > arch/arm64/boot/dts/synaptics/as370.dtsi | 173 ------------------
> > > > 2 files changed, 177 deletions(-)
> > > > delete mode 100644 arch/arm64/boot/dts/synaptics/as370.dtsi
> > > >
> > >
> > > I assume Arnd/Olof will take this.
> > >
> > > Acked-by: Rob Herring <[email protected]>
> >
> > Sure, I can take that, but it would be nice to hear anything from Jisheng Zhang
> > about this.
> >
> > I can see that the only two 64-bit Synaptics SoCs are as370 and bg4ct,
> > but both of them have apparently been replaced with newer versions that
> > never made it into the kernel: as371, as390, bg5ct, according to press
> > releases.
> >
> > Jisheng, can you clarify whether you plan to complete the as370 support
> > or add the later SoCs?
>
> Hi Arnd, Rob, Krzysztof
>
> Sorry for being late. I was on vocation in the past several days.
> As for this as370 removing, I think we'd better keep it. I planned
> to submit the as370-rdk board dts two years ago, but latter I focused
> on Synaptics SoCs related drivers support such as gpio, pcie, sdhci and
> so on. I will send a basic as370 rdk board dts. I'm also considering
> to mainline basic support for a new SoC.

Ok, sounds good. Let's keep it for now then. If you have the dts file at
hand, please send the patch to [email protected] directly so I can still
apply it for 5.15 to enable it for build testing, even if it's still missing
functionality.

Arnd