[PATCH 2/2] arm64: dts: rockchip: add RK3588 DP carrier from Theobroma Systems
Heiko Stuebner
heiko at sntech.de
Wed Jul 16 11:50:27 PDT 2025
From: Heiko Stuebner <heiko.stuebner at cherry.de>
The DisplayPort carrier is a very simple baseboard only providing serial,
ethernet and a displayport output.
But its main functionality is that it routes the Analogix eDP controller
to this DisplayPort output, which allows to test that controller simply
by hooking it up to a suitable monitor.
The Analogix-DP controller supports eDP 1.3 and DP 1.2, so can drive
both eDP displays as well as full DP monitors. It does not support DP+
so passive DP-to-HDMI adapters won't work.
Signed-off-by: Heiko Stuebner <heiko.stuebner at cherry.de>
---
arch/arm64/boot/dts/rockchip/Makefile | 1 +
.../rk3588-tiger-displayport-carrier.dts | 118 ++++++++++++++++++
2 files changed, 119 insertions(+)
create mode 100644 arch/arm64/boot/dts/rockchip/rk3588-tiger-displayport-carrier.dts
diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index 7946bec10670..0c915679fde6 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -178,6 +178,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-rock-5b-pcie-srns.dtbo
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-rock-5b-plus.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-tiger-haikou.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-tiger-haikou-video-demo.dtbo
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-tiger-displayport-carrier.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-toybrick-x0.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588-turing-rk1.dtb
dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3588s-coolpi-4b.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3588-tiger-displayport-carrier.dts b/arch/arm64/boot/dts/rockchip/rk3588-tiger-displayport-carrier.dts
new file mode 100644
index 000000000000..5bd79877194a
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3588-tiger-displayport-carrier.dts
@@ -0,0 +1,118 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2024 Cherry Embedded Solutions GmbH
+ */
+
+/dts-v1/;
+#include <dt-bindings/soc/rockchip,vop2.h>
+#include "rk3588-tiger.dtsi"
+
+/ {
+ model = "Theobroma Systems RK3588-Q7 SoM on Tiger Displayport Carrier v1";
+ compatible = "tsd,rk3588-tiger-displayport-carrier", "tsd,rk3588-tiger", "rockchip,rk3588";
+
+ chosen {
+ stdout-path = "serial2:115200n8";
+ };
+
+ dp-connector {
+ compatible = "dp-connector";
+ dp-pwr-supply = <&vcc3v3_baseboard>;
+ label = "dp0";
+ type = "full-size";
+
+ /* Q7_DP_HPD# but Q7_HDMI_HPD# could be used too */
+ hpd-gpios = <&gpio4 RK_PB5 GPIO_ACTIVE_LOW>;
+ pinctrl-0 = <&edp0_hpd_l>;
+ pinctrl-names = "default";
+
+ port {
+ dp_con_in: endpoint {
+ remote-endpoint = <&edp0_out_con>;
+ };
+ };
+ };
+
+ vcc3v3_baseboard: regulator-vcc3v3-baseboard {
+ compatible = "regulator-fixed";
+ regulator-name = "vcc3v3_baseboard";
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ vin-supply = <&vcc5v0_baseboard>;
+ };
+
+ vcc5v0_baseboard: regulator-vcc5v0-baseboard {
+ compatible = "regulator-fixed";
+ regulator-name = "vcc5v0_baseboard";
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ };
+};
+
+&edp0 {
+ /*
+ * Note that this board doesn't respect Q7 standard as Q7 has
+ * lane 2 of HDMI on the same pin as lane 0 of DP and lane 0 of HDMI
+ * on lane 2 of DP but this board uses HDMI lane numbering instead of
+ * DP lane numbering for its DP lanes.
+ *
+ * It should be possible to match Q7 standard if required by requesting
+ * the eDPTX controller to swap lanes with:
+ *
+ * data-lanes = <2 1 0 3>;
+ */
+
+ status = "okay";
+};
+
+&edp0_in {
+ edp0_in_vp2: endpoint {
+ remote-endpoint = <&vp2_out_edp0>;
+ };
+};
+
+&edp0_out {
+ edp0_out_con: endpoint {
+ remote-endpoint = <&dp_con_in>;
+ };
+};
+
+&gmac0 {
+ status = "okay";
+};
+
+&hdptxphy0 {
+ status = "okay";
+};
+
+&pinctrl {
+ edp0 {
+ edp0_hpd_l: edp0-hpd-l-pin {
+ rockchip,pins = <4 RK_PB5 RK_FUNC_GPIO &pcfg_pull_up>;
+ };
+ };
+};
+
+&uart2 {
+ pinctrl-0 = <&uart2m2_xfer>;
+ status = "okay";
+};
+
+&vop {
+ status = "okay";
+};
+
+&vop_mmu {
+ status = "okay";
+};
+
+&vp2 {
+ vp2_out_edp0: endpoint at ROCKCHIP_VOP2_EP_EDP0 {
+ reg = <ROCKCHIP_VOP2_EP_EDP0>;
+ remote-endpoint = <&edp0_in_vp2>;
+ };
+};
--
2.47.2
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