From bb7964ff021eebc5e194f03a2b14ccf6efc3e8d6 Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Wed, 7 Apr 2021 19:21:30 +0200 Subject: [PATCH] Fix ODROID-C2 Ethernet on some boards (#1202) (#1305) --- ...-odroidc2-readd-PHY-reset-properties.patch | 38 +++++++++++++++++++ 1 file changed, 38 insertions(+) create mode 100644 buildroot-external/board/hardkernel/patches/uboot/0002-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch diff --git a/buildroot-external/board/hardkernel/patches/uboot/0002-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch b/buildroot-external/board/hardkernel/patches/uboot/0002-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch new file mode 100644 index 000000000..4be7ff6d6 --- /dev/null +++ b/buildroot-external/board/hardkernel/patches/uboot/0002-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch @@ -0,0 +1,38 @@ +From e194459c7459a1c6f9d1183e05186d164f0c6715 Mon Sep 17 00:00:00 2001 +Message-Id: +In-Reply-To: <8511fa06c13a9761e53ed72fe7111f5c3e3514a0.1617807077.git.stefan@agner.ch> +References: <8511fa06c13a9761e53ed72fe7111f5c3e3514a0.1617807077.git.stefan@agner.ch> +From: Stefan Agner +Date: Thu, 1 Apr 2021 14:33:57 +0200 +Subject: [PATCH 2/2] arm64: dts: meson: odroidc2: readd PHY reset properties + +The sync of the device tree and dt-bindings from Linux v5.6-rc2 +11a48a5a18c6 ("Linux 5.6-rc2") causes Ethernet to break on some +ODROID-C2. The PHY seems to need proper reset timing to be functional +in U-Boot and Linux afterwards. Readd the old PHY reset bindings for +dwmac until we support the new bindings in the PHY node. + +Fixes: dd5f2351e99a ("arm64: dts: meson: sync dt and bindings from v5.6-rc2") +Signed-off-by: Stefan Agner +--- + arch/arm/dts/meson-gxbb-odroidc2.dts | 4 ++++ + 1 file changed, 4 insertions(+) + +diff --git a/arch/arm/dts/meson-gxbb-odroidc2.dts b/arch/arm/dts/meson-gxbb-odroidc2.dts +index 70fcfb7b06..8b80bbc90b 100644 +--- a/arch/arm/dts/meson-gxbb-odroidc2.dts ++++ b/arch/arm/dts/meson-gxbb-odroidc2.dts +@@ -188,6 +188,10 @@ + phy-handle = <ð_phy0>; + phy-mode = "rgmii"; + ++ snps,reset-gpio = <&gpio GPIOZ_14 0>; ++ snps,reset-delays-us = <0 10000 1000000>; ++ snps,reset-active-low; ++ + amlogic,tx-delay-ns = <2>; + + mdio { +-- +2.31.1 +