Providing ethernet aliases solves a subtle problem for the rk3568. The
bus_id used for the sysfs directory name of the mdio. Without ethernet
alias the bus_id is always 0 and so creating the sysfs directory for the
second mdio fails with a duplicate filename error and by this the setup
of the second ethernet port fails too.
Note: The alias numbering is inverted as gmac1 comes from more generic
rk356x.dtsi but gmac0 comes from specialised rk3568.
Signed-off-by: Philipp Puschmann <p.puschmann@xxxxxxxxxxx>
---
arch/arm64/boot/dts/rockchip/rk3568.dtsi | 4 ++++
arch/arm64/boot/dts/rockchip/rk356x.dtsi | 1 +
2 files changed, 5 insertions(+)
diff --git a/arch/arm64/boot/dts/rockchip/rk3568.dtsi b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
index f1be76a54ceb..42018c8666e0 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
@@ -8,6 +8,10 @@
/ {
compatible = "rockchip,rk3568";
+ aliases {
+ ethernet1 = &gmac0;
+ };
+
sata0: sata@fc000000 {
compatible = "rockchip,rk3568-dwc-ahci", "snps,dwc-ahci";
reg = <0 0xfc000000 0 0x1000>;
diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
index d8543b5557ee..e13bd7b24752 100644
--- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
@@ -43,6 +43,7 @@ aliases {
spi1 = &spi1;
spi2 = &spi2;
spi3 = &spi3;
+ ethernet0 = &gmac1;
};
cpus {
--
2.45.2
