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 <[email protected]> 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 > [email protected] hat am 17.02.2021 12:38 geschrieben: > > > From: Claudiu Beznea <[email protected]> > > 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 <[email protected]> > Fixes: 2f61929eb10a ("ARM: dts: at91: at91-sama5d27_som1: fix PHY ID") > Cc: Ludovic Desroches <[email protected]> > Signed-off-by: Nicolas Ferre <[email protected]> > Cc: <[email protected]> # 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 > > > _______________________________________________ > linux-arm-kernel mailing list > [email protected] > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
