[PATCH v2 2/4] arm64: dts: rockchip: use gated-fixed-clock for pcie-refclk on rk3588-tiger

Heiko Stuebner
2026-02-10T08:03:20Z

From: Heiko Stuebner <heiko.stuebner@cherry.de>

Using a combination of fixed clock and gpio-gate clock works but does
not describe the actual hardware. Use the gated-fixed-clock binding
to describe this in a nicer way.

Signed-off-by: Heiko Stuebner <heiko.stuebner@cherry.de>
---
.../arm64/boot/dts/rockchip/rk3588-tiger.dtsi | 19 +++++--------------
1 file changed, 5 insertions(+), 14 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
index 27269b7b08aa..b4b8f305935f 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3588-tiger.dtsi
@@ -47,23 +47,14 @@ led-1 {
};
};

- /*
- * 100MHz reference clock for PCIe peripherals from PI6C557-05BLE
- * clock generator.
- * The clock output is gated via the OE pin on the clock generator.
- * This is modeled as a fixed-clock plus a gpio-gate-clock.
- */
- pcie_refclk_gen: pcie-refclk-gen-clock {
- compatible = "fixed-clock";
+ /* 100MHz PCIe reference clock from PI6C557-05BLE */
+ pcie_refclk: pcie-clock-generator {
+ compatible = "gated-fixed-clock";
#clock-cells = <0>;
clock-frequency = <100000000>;
- };
-
- pcie_refclk: pcie-refclk-clock {
- compatible = "gpio-gate-clock";
- clocks = <&pcie_refclk_gen>;
- #clock-cells = <0>;
+ clock-output-names = "pcie-refclk-clock";
enable-gpios = <&gpio4 RK_PB4 GPIO_ACTIVE_HIGH>; /* PCIE30X4_CLKREQN_M1_L */
+ vdd-supply = <&vcca_3v3_s0>;
};

vcc_1v1_nldo_s3: regulator-vcc-1v1-nldo-s3 {
--
2.47.2