[PATCH 5/6] arm64: dts: allwinner: a523: add EPHY 25MHz clock fanout pins

[Andre Przywara <andre.przywara@arm.com>]

The Allwinner A523 SoC family provides two clock fanout pins, which are
backed by gated clocks fixed to 25 MHz, divided down from the main
peripheral PLL. Those are meant to clock an Ethernet PHY, and allow to
save an external crystal oscillator typically employed for that purpose.

Add the pin descriptions of the two pins for those clocks, one is within
the RGMII0 pins, the other within the RGMII1 pins, although the clock
fanout works completely independently from the two MACs.

Signed-off-by: Andre Przywara <andre.przywara@arm.com>
---
 arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
index ca6a16807049..1a95c0a21509 100644
--- a/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
+++ b/arch/arm64/boot/dts/allwinner/sun55i-a523.dtsi
@@ -147,6 +147,20 @@ pio: pinctrl@2000000 {
 			interrupt-controller;
 			#interrupt-cells = <3>;
 
+			/omit-if-no-ref/
+			ephy0_25m_pin: ephy0-25m-pin {
+				pins = "PH13";
+				allwinner,pinmux = <5>;
+				function = "ephy_25m";
+			};
+
+			/omit-if-no-ref/
+			ephy1_25m_pin: ephy1-25m-pin {
+				pins = "PJ10";
+				allwinner,pinmux = <5>;
+				function = "ephy_25m";
+			};
+
 			/omit-if-no-ref/
 			i2s2_pi_pins: i2s2-pi-pins {
 				pins = "PI2", "PI3", "PI4", "PI5";
-- 
2.43.0