[PATCH 09/11] arm64: dts: renesas: salvator-common: Describe PCIe/USB3.0 clock generator

Marek Vasut marek.vasut+renesas at mailbox.org
Thu Jan 1 12:35:56 PST 2026


Describe the 9FGV0841 PCIe and USB3.0 clock generator present on both
Salvator-X and Salvator-XS boards. The clock generator supplies 100 MHz
differential clock for both PCIe ports, as well as for the USB 3.0 PHY.

Signed-off-by: Marek Vasut <marek.vasut+renesas at mailbox.org>
---
Cc: Conor Dooley <conor+dt at kernel.org>
Cc: Geert Uytterhoeven <geert+renesas at glider.be>
Cc: Krzysztof Kozlowski <krzk+dt at kernel.org>
Cc: Magnus Damm <magnus.damm at gmail.com>
Cc: Neil Armstrong <neil.armstrong at linaro.org>
Cc: Rob Herring <robh at kernel.org>
Cc: Vinod Koul <vkoul at kernel.org>
Cc: Yoshihiro Shimoda <yoshihiro.shimoda.uh at renesas.com>
Cc: devicetree at vger.kernel.org
Cc: linux-phy at lists.infradead.org
Cc: linux-renesas-soc at vger.kernel.org
---
 .../boot/dts/renesas/salvator-common.dtsi     | 26 +++++++++++++++++++
 1 file changed, 26 insertions(+)

diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
index fa8bfee07b3c8..4e2322d2a90be 100644
--- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
@@ -75,6 +75,12 @@ backlight: backlight {
 		enable-gpios = <&gpio6 7 GPIO_ACTIVE_HIGH>;
 	};
 
+	pcie_usb_refclk: clk-x7 {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <25000000>;
+	};
+
 	cvbs-in {
 		compatible = "composite-video-connector";
 		label = "CVBS IN";
@@ -523,6 +529,13 @@ pca9654: gpio at 20 {
 		#gpio-cells = <2>;
 	};
 
+	pcie_usb_clk: clk at 68 {
+		compatible = "renesas,9fgv0841";
+		reg = <0x68>;
+		clocks = <&pcie_usb_refclk>;
+		#clock-cells = <1>;
+	};
+
 	video-receiver at 70 {
 		compatible = "adi,adv7482";
 		reg = <0x70 0x71 0x72 0x73 0x74 0x75
@@ -641,16 +654,27 @@ &ohci1 {
 
 &pcie_bus_clk {
 	clock-frequency = <100000000>;
+	status = "disabled";
 };
 
 &pciec0 {
+	clocks = <&cpg CPG_MOD 319>, <&pcie_usb_clk 1>;
 	status = "okay";
 };
 
+&pciec0_rp {
+	clocks = <&pcie_usb_clk 3>;
+};
+
 &pciec1 {
+	clocks = <&cpg CPG_MOD 318>, <&pcie_usb_clk 2>;
 	status = "okay";
 };
 
+&pciec1_rp {
+	clocks = <&pcie_usb_clk 4>;
+};
+
 &pfc {
 	pinctrl-0 = <&scif_clk_pins>;
 	pinctrl-names = "default";
@@ -1038,11 +1062,13 @@ &usb3_peri0 {
 };
 
 &usb3_phy0 {
+	clocks = <&cpg CPG_MOD 328>, <&pcie_usb_clk 6>, <&usb_extal_clk>;
 	status = "okay";
 };
 
 &usb3s0_clk {
 	clock-frequency = <100000000>;
+	status = "disabled";
 };
 
 &vin0 {
-- 
2.51.0




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