[v5,14/14] arm64: dts: rockchip: Add rockpro64 overlay for PCIe endpoint mode

Commit Message

Damien Le Moal Oct. 17, 2024, 1:58 a.m. UTC

Add a DTS overlay file for the rk3399-rockpro64 DT for enabling PCIe
endpoint mode support.

Signed-off-by: Damien Le Moal <[e-mail]>
---
 arch/arm64/boot/dts/rockchip/Makefile         |  1 +
 .../rockchip/rk3399-rockpro64-pcie-ep.dtso    | 20 +++++++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3399-rockpro64-pcie-ep.dtso

Patch

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 09423070c992..184131a58704 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -73,6 +73,7 @@  dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock-pi-4c.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rock960.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-v2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64-pcie-ep.dtbo
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire-excavator.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399pro-rock-pi-n10.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-pcie-ep.dtso b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-pcie-ep.dtso
new file mode 100644
index 000000000000..cebfb71bebfc
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3399-rockpro64-pcie-ep.dtso
@@ -0,0 +1,20 @@ 
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * DT-overlay to run the PCIe Dual Mode controller in Endpoint mode
+ * with the #PERST signal handled with gpio2.
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+
+/dts-v1/;
+/plugin/;
+
+&pcie0 {
+	status = "disabled";
+};
+
+&pcie0_ep {
+	reset-gpios = <&gpio2 RK_PD4 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};