From 342b8efe75f2ea3e53b0a5410035b919b9a6f605 Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Thu, 8 Apr 2021 14:03:46 +0200 Subject: [PATCH] Fix ODROID-C2 Ethernet on some boards (#1202) (#1305) --- ...-odroidc2-readd-PHY-reset-properties.patch | 40 +++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 buildroot-external/board/hardkernel/patches/uboot/0004-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch diff --git a/buildroot-external/board/hardkernel/patches/uboot/0004-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch b/buildroot-external/board/hardkernel/patches/uboot/0004-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch new file mode 100644 index 000000000..e40cb1014 --- /dev/null +++ b/buildroot-external/board/hardkernel/patches/uboot/0004-arm64-dts-meson-odroidc2-readd-PHY-reset-properties.patch @@ -0,0 +1,40 @@ +From 825686fdd92e44c4a136f8105e91fb1e05f4c64b Mon Sep 17 00:00:00 2001 +Message-Id: <825686fdd92e44c4a136f8105e91fb1e05f4c64b.1617883279.git.stefan@agner.ch> +In-Reply-To: <526ccae8321b9b48925c44999611c3c5a374328e.1617883279.git.stefan@agner.ch> +References: <526ccae8321b9b48925c44999611c3c5a374328e.1617883279.git.stefan@agner.ch> +From: Stefan Agner +Date: Thu, 1 Apr 2021 14:33:57 +0200 +Subject: [PATCH 4/4] 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-u-boot.dtsi | 6 ++++++ + 1 file changed, 6 insertions(+) + +diff --git a/arch/arm/dts/meson-gxbb-odroidc2-u-boot.dtsi b/arch/arm/dts/meson-gxbb-odroidc2-u-boot.dtsi +index 484b40504d..f11b8fa591 100644 +--- a/arch/arm/dts/meson-gxbb-odroidc2-u-boot.dtsi ++++ b/arch/arm/dts/meson-gxbb-odroidc2-u-boot.dtsi +@@ -6,6 +6,12 @@ + + #include "meson-gx-u-boot.dtsi" + ++ðmac { ++ snps,reset-gpio = <&gpio GPIOZ_14 0>; ++ snps,reset-delays-us = <0 10000 1000000>; ++ snps,reset-active-low; ++}; ++ + &usb0 { + status = "disabled"; + }; +-- +2.31.1 +