From: Marek Vasut <marek.vasut+renesas@mailbox.org>
Date: Sun, 18 Jan 2026 13:49:55 +0000 (+0100)
Subject: arm64: dts: renesas: salvator-common: Describe PCIe/USB3.0 clock generator
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=39ef5f2dac6697c88bbc6588ca9388659a3cbed6;p=thirdparty%2Fkernel%2Flinux.git

arm64: dts: renesas: salvator-common: Describe PCIe/USB3.0 clock generator

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@mailbox.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260118135038.8033-8-marek.vasut+renesas@mailbox.org
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
---

diff --git a/arch/arm64/boot/dts/renesas/salvator-common.dtsi b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
index d4a921bed4c39..e505161caa675 100644
--- a/arch/arm64/boot/dts/renesas/salvator-common.dtsi
+++ b/arch/arm64/boot/dts/renesas/salvator-common.dtsi
@@ -75,6 +75,12 @@
 		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 @@
 		#gpio-cells = <2>;
 	};
 
+	pcie_usb_clk: clk@68 {
+		compatible = "renesas,9fgv0841";
+		reg = <0x68>;
+		clocks = <&pcie_usb_refclk>;
+		#clock-cells = <1>;
+	};
+
 	video-receiver@70 {
 		compatible = "adi,adv7482";
 		reg = <0x70 0x71 0x72 0x73 0x74 0x75
@@ -640,17 +653,27 @@
 };
 
 &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 +1061,12 @@
 };
 
 &usb3_phy0 {
+	clocks = <&cpg CPG_MOD 328>, <&pcie_usb_clk 6>, <&usb_extal_clk>;
 	status = "okay";
 };
 
 &usb3s0_clk {
-	clock-frequency = <100000000>;
+	status = "disabled";
 };
 
 &vin0 {