2021-01-11 11:49:17

by Michael Walle

Subject: [PATCH RESEND v3] arm64: dts: ls1028a: fix FlexSPI clock

Now that we have a proper driver for the FlexSPI interface use it. This
will fix SCK frequency switching on Layerscape SoCs.

This was tested on the Kontron sl28 board.

Signed-off-by: Michael Walle <[email protected]>
---
Hi Shawn,

this is the last remaining piece of my previous series [1]. Now with the
actual clock driver in v5.11 and the clockgen constants patches in your
for-next branch, there are no further dependencies.

[1] https://lore.kernel.org/lkml/[email protected]/

Changlog from the old series:
Changes since v2:
- use device tree constants for clockgen
- also use &fspi_clk for fspi_en clock

Changes since v1:
- none

arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
index e00acad9a5c1..0a5923e96d7f 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1028a.dtsi
@@ -206,9 +206,20 @@
};

dcfg: syscon@1e00000 {
- compatible = "fsl,ls1028a-dcfg", "syscon";
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "fsl,ls1028a-dcfg", "syscon", "simple-mfd";
reg = <0x0 0x1e00000 0x0 0x10000>;
+ ranges = <0x0 0x0 0x1e00000 0x10000>;
little-endian;
+
+ fspi_clk: clock-controller@900 {
+ compatible = "fsl,ls1028a-flexspi-clk";
+ reg = <0x900 0x4>;
+ #clock-cells = <0>;
+ clocks = <&clockgen QORIQ_CLK_HWACCEL 0>;
+ clock-output-names = "fspi_clk";
+ };
};

rst: syscon@1e60000 {
@@ -326,8 +337,7 @@
<0x0 0x20000000 0x0 0x10000000>;
reg-names = "fspi_base", "fspi_mmap";
interrupts = <GIC_SPI 25 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clockgen QORIQ_CLK_HWACCEL 0>,
- <&clockgen QORIQ_CLK_HWACCEL 0>;
+ clocks = <&fspi_clk>, <&fspi_clk>;
clock-names = "fspi_en", "fspi";
status = "disabled";
};
--
2.20.1

2021-01-18 06:58:22

by Shawn Guo

Subject: Re: [PATCH RESEND v3] arm64: dts: ls1028a: fix FlexSPI clock

On Mon, Jan 11, 2021 at 12:45:55PM +0100, Michael Walle wrote:
> Now that we have a proper driver for the FlexSPI interface use it. This
> will fix SCK frequency switching on Layerscape SoCs.
>
> This was tested on the Kontron sl28 board.
>
> Signed-off-by: Michael Walle <[email protected]>

Applied, thanks.