[linux-next-v2 2/5] arm64: dts: rockchip: Add support of external clock to ethernet node on Rock 3A SBC

Anand Moon
2022-11-16T20:02:42Z

Add support of external clock gmac1_clkin which is used as input clock
to ethernet node.

Signed-off-by: Anand Moon <linux.amoon@gmail.com>
---
V2: None
---
arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts | 13 ++++++++++---
1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
index e1c75532dcee..b848282ea005 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-rock-3a.dts
@@ -32,6 +32,13 @@ hdmi_con_in: endpoint {
};
};

+ gmac1_clkin: external-gmac1-clock {
+ compatible = "fixed-clock";
+ clock-frequency = <125000000>;
+ clock-output-names = "gmac1_clkin";
+ #clock-cells = <0>;
+ };
+
leds {
compatible = "gpio-leds";

@@ -249,9 +256,8 @@ &cpu3 {

&gmac1 {
assigned-clocks = <&cru SCLK_GMAC1_RX_TX>, <&cru SCLK_GMAC1>;
- assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>;
- assigned-clock-rates = <0>, <125000000>;
- clock_in_out = "output";
+ assigned-clock-parents = <&cru SCLK_GMAC1_RGMII_SPEED>, <&gmac1_clkin>;
+ clock_in_out = "input";
phy-handle = <&rgmii_phy1>;
phy-mode = "rgmii";
pinctrl-names = "default";
@@ -259,6 +265,7 @@ &gmac1 {
&gmac1m1_tx_bus2
&gmac1m1_rx_bus2
&gmac1m1_rgmii_clk
+ &gmac1m1_clkinout
&gmac1m1_rgmii_bus>;

tx_delay = <0x4f>;
--
2.38.1