2022-10-25 15:46:43

by Ioana Ciornei

Subject: [PATCH 0/3] arch: dts: specify the MDC frequency on Layerscape DPAA2 devices

Up until now, the external MDIO controller frequency values relied
either on the default ones out of reset or on those setup by u-boot.
Let's just properly specify the MDC frequency in the DTS so that even
without u-boot's intervention Linux can drive the MDIO bus.

This patch set adds the needed properties on all DPAA2 based SoCs.

Ioana Ciornei (3):
arm64: dts: lx2160a: specify clock frequencies for the MDIO
controllers
arm64: dts: ls1088a: specify clock frequencies for the MDIO
controllers
arm64: dts: ls208xa: specify clock frequencies for the MDIO
controllers

arch/arm64/boot/dts/freescale/fsl-ls1088a.dtsi | 6 ++++++
arch/arm64/boot/dts/freescale/fsl-ls208xa.dtsi | 6 ++++++
arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 6 ++++++
3 files changed, 18 insertions(+)

--
2.25.1

2022-10-25 15:54:22

by Ioana Ciornei

Subject: [PATCH 1/3] arm64: dts: lx2160a: specify clock frequencies for the MDIO controllers

Up until now, the external MDIO controller frequency values relied
either on the default ones out of reset or on those setup by u-boot.
Let's just properly specify the MDC frequency in the DTS so that even
without u-boot's intervention Linux can drive the MDIO bus.

Fixes: 6e1b8fae892d ("arm64: dts: lx2160a: add emdio1 node")
Fixes: 5705b9dcda57 ("arm64: dts: lx2160a: add emdio2 node")
Signed-off-by: Ioana Ciornei <[email protected]>
---
arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
index 6680fb2a6dc9..8c76d86cb756 100644
--- a/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-lx2160a.dtsi
@@ -1385,6 +1385,9 @@ emdio1: mdio@8b96000 {
#address-cells = <1>;
#size-cells = <0>;
little-endian;
+ clock-frequency = <2500000>;
+ clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
+ QORIQ_CLK_PLL_DIV(2)>;
status = "disabled";
};

@@ -1395,6 +1398,9 @@ emdio2: mdio@8b97000 {
little-endian;
#address-cells = <1>;
#size-cells = <0>;
+ clock-frequency = <2500000>;
+ clocks = <&clockgen QORIQ_CLK_PLATFORM_PLL
+ QORIQ_CLK_PLL_DIV(2)>;
status = "disabled";
};

--
2.25.1

2022-10-29 13:02:14

by Shawn Guo

Subject: Re: [PATCH 0/3] arch: dts: specify the MDC frequency on Layerscape DPAA2 devices

On Tue, Oct 25, 2022 at 05:41:14PM +0300, Ioana Ciornei wrote:
> Up until now, the external MDIO controller frequency values relied
> either on the default ones out of reset or on those setup by u-boot.
> Let's just properly specify the MDC frequency in the DTS so that even
> without u-boot's intervention Linux can drive the MDIO bus.
>
> This patch set adds the needed properties on all DPAA2 based SoCs.
>
> Ioana Ciornei (3):
> arm64: dts: lx2160a: specify clock frequencies for the MDIO
> controllers
> arm64: dts: ls1088a: specify clock frequencies for the MDIO
> controllers
> arm64: dts: ls208xa: specify clock frequencies for the MDIO
> controllers

Applied all, thanks!