Hei hei,
I could not get ethernet to work on SAMA5D27-SOM1-EK1 with kernels v5.10 and v5.11 built by a recent ptxdist based DistroKit BSP, while it used to work with an older v4.19 kernel. Just applying this patch to the tree made ethernet working again, thus:
Tested-by: Alexander Dahl ada@thorsis.com
Not sure why it worked with that older kernel, though.
I added Ahmad to Cc, he added board support to DistroKit for that board, and might want to know. And I added the devicetree list to Cc, I wondered why the patch was not there and get_maintainers.pl proposed it.
Thanks for fixing this and greetings Alex
nicolas.ferre@microchip.com hat am 17.02.2021 12:38 geschrieben:
From: Claudiu Beznea claudiu.beznea@microchip.com
Fix the phy address to 7 for Ethernet PHY on SAMA5D27 SOM1. No connection established if phy address 0 is used.
The board uses the 24 pins version of the KSZ8081RNA part, KSZ8081RNA pin 16 REFCLK as PHYAD bit [2] has weak internal pull-down. But at reset, connected to PD09 of the MPU it's connected with an internal pull-up forming PHYAD[2:0] = 7.
Signed-off-by: Claudiu Beznea claudiu.beznea@microchip.com Fixes: 2f61929eb10a ("ARM: dts: at91: at91-sama5d27_som1: fix PHY ID") Cc: Ludovic Desroches ludovic.desroches@microchip.com Signed-off-by: Nicolas Ferre nicolas.ferre@microchip.com Cc: stable@vger.kernel.org # 4.14+
arch/arm/boot/dts/at91-sama5d27_som1.dtsi | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/at91-sama5d27_som1.dtsi b/arch/arm/boot/dts/at91-sama5d27_som1.dtsi index 1b1163858b1d..e3251f3e3eaa 100644 --- a/arch/arm/boot/dts/at91-sama5d27_som1.dtsi +++ b/arch/arm/boot/dts/at91-sama5d27_som1.dtsi @@ -84,8 +84,8 @@ macb0: ethernet@f8008000 { pinctrl-0 = <&pinctrl_macb0_default>; phy-mode = "rmii";
ethernet-phy@0 {reg = <0x0>;
ethernet-phy@7 {reg = <0x7>; interrupt-parent = <&pioA>; interrupts = <PIN_PD31 IRQ_TYPE_LEVEL_LOW>; pinctrl-names = "default";-- 2.30.0
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