The GMAC (gigabit ethernet controller) supports RGMII to connect to
the ethernet PHY, for gigabit network speeds.
Signed-off-by: Chen-Yu Tsai <wens@xxxxxxxx>
---
arch/arm/boot/dts/sun9i-a80.dtsi | 13 +++++++++++++
1 file changed, 13 insertions(+)
diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi b/arch/arm/boot/dts/sun9i-a80.dtsi
index f0c7acf2d0a4..6fb292e0b662 100644
--- a/arch/arm/boot/dts/sun9i-a80.dtsi
+++ b/arch/arm/boot/dts/sun9i-a80.dtsi
@@ -1000,6 +1000,19 @@
#size-cells = <0>;
#gpio-cells = <3>;
+ gmac_rgmii_pins: gmac-rgmii-pins {
+ allwinner,pins = "PA0", "PA1", "PA2", "PA3",
+ "PA4", "PA5", "PA7", "PA8",
+ "PA9", "PA10", "PA12", "PA13",
+ "PA15", "PA16", "PA17";
+ allwinner,function = "gmac";
+ /*
+ * data lines in RGMII mode use DDR mode
+ * and need a higher signal drive strength
+ */
+ drive-strength = <40>;
+ };
+
i2c3_pins: i2c3-pins {
pins = "PG10", "PG11";
function = "i2c3";
--
2.20.1
