The sun50i-a64.dtsi changes introduced in Linux v4.19-rc1 changed the
compatible name for the syscon controller, dropping the generic "syscon"
fallback. Using this new DT node will make the Ethernet driver in every
older kernel (or non-Linux kernels) fail to initialise the MAC device.
To allow booting distribution kernels (from installer images via UEFI,
for instance), re-add the syscon compatible string as a fallback. This
works with both older and newer kernels.
Signed-off-by: Andre Przywara <andre.przyw...@arm.com>
---
arch/arm/dts/sun50i-a64.dtsi | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/arch/arm/dts/sun50i-a64.dtsi b/arch/arm/dts/sun50i-a64.dtsi
index f3a66f8882..ff41abc96a 100644
--- a/arch/arm/dts/sun50i-a64.dtsi
+++ b/arch/arm/dts/sun50i-a64.dtsi
@@ -259,7 +259,8 @@
};
syscon: syscon@1c00000 {
- compatible = "allwinner,sun50i-a64-system-control";
+ compatible = "allwinner,sun50i-a64-system-control",
+ "syscon";
reg = <0x01c00000 0x1000>;
#address-cells = <1>;
#size-cells = <1>;
--
2.14.5
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