[PATCH v2 3/3] arm64: dts: rockchip: Define PCIe clock pinctrl for BPI-R2-Pro

[David Heidelberg via B4 Relay]

From: David Heidelberg <david@xxxxxxx>

Without configuring the PCIe clock enable pin as an output, it
remains floating in input state. Some operating systems that rely
on correct pin settings may fail to boot as a result.

Fixes: 86973ae0355b ("arm64: dts: rockchip: Add PCIe v3 nodes to BPI-R2-Pro")
Reported-by: Martin Filla <freebsd@xxxxxxxxx> # reported by private message
Tested-by: Martin Filla <freebsd@xxxxxxxxx>
Signed-off-by: David Heidelberg <david@xxxxxxx>
---
 arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
index a071cb67579c4..0616d9a065605 100644
--- a/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3568-bpi-r2-pro.dts
@@ -125,6 +125,8 @@ pcie_refclk: pcie-refclk-clock {
 		clocks = <&pcie_refclk_gen>;
 		#clock-cells = <0>;
 		enable-gpios = <&gpio0 RK_PD4 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&pcie_clkreq_h>;
+		pinctrl-names = "default";
 	};
 
 	vcc3v3_minipcie: regulator-vcc3v3-minipcie {
@@ -650,6 +652,10 @@ ir_receiver_pin: ir-receiver-pin {
 	};
 
 	pcie {
+		pcie_clkreq_h: pcie-clkreq-h {
+			rockchip,pins = <0 RK_PD4 RK_FUNC_GPIO &pcfg_output_high>;
+		};
+
 		minipcie_enable_h: minipcie-enable-h {
 			rockchip,pins = <0 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none_drv_level_5>;
 		};

-- 
2.53.0