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

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Date:   Wed, 16 Nov 2022 20:01:44 +0000
From:   Anand Moon <linux.amoon@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     Anand Moon <linux.amoon@...il.com>,
        Chukun Pan <amadeus@....edu.cn>,
        Michael Riesch <michael.riesch@...fvision.net>,
        Peter Geis <pgwipeout@...il.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [linux-next-v2 2/5] arm64: dts: rockchip: Add support of external clock to ethernet node on Rock 3A SBC

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

Signed-off-by: Anand Moon <linux.amoon@...il.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