ARM: dts: sun9i: Add A80 GMAC RGMII pinmux setting

The GMAC (gigabit ethernet controller) supports RGMII to connect to
the ethernet PHY, for gigabit network speeds.

Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>

diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi b/arch/arm/boot/dts/sun9i-a80.dtsi
index f0c7acf..6fb292e 100644 (file)
--- 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";