[PATCH v7 6/8] riscv: dts: thead: add DPU and HDMI device tree nodes

Icenowy Zheng
2026-01-29T02:40:18Z

From: Icenowy Zheng <uwu@icenowy.me>

T-Head TH1520 SoC contains a Verisilicon DC8200 display controller
(called DPU in manual) and a Synopsys DesignWare HDMI TX controller.

Add device tree nodes to them.

Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Signed-off-by: Icenowy Zheng <zhengxingda@iscas.ac.cn>
Tested-by: Han Gao <gaohan@iscas.ac.cn>
Tested-by: Michal Wilczynski <m.wilczynski@samsung.com>
---
No changes since v4.

Changes in v3:
- Adapting to the changed binding.

No changes in v2.

arch/riscv/boot/dts/thead/th1520.dtsi | 66 +++++++++++++++++++++++++++
1 file changed, 66 insertions(+)

diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
index bd5d33840884e..b663077428940 100644
--- a/arch/riscv/boot/dts/thead/th1520.dtsi
+++ b/arch/riscv/boot/dts/thead/th1520.dtsi
@@ -585,6 +585,72 @@ clk_vo: clock-controller@ffef528050 {
#clock-cells = <1>;
};

+ hdmi: hdmi@ffef540000 {
+ compatible = "thead,th1520-dw-hdmi";
+ reg = <0xff 0xef540000 0x0 0x40000>;
+ reg-io-width = <4>;
+ interrupts = <111 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_vo CLK_HDMI_PCLK>,
+ <&clk_vo CLK_HDMI_SFR>,
+ <&clk_vo CLK_HDMI_CEC>,
+ <&clk_vo CLK_HDMI_PIXCLK>;
+ clock-names = "iahb", "isfr", "cec", "pix";
+ resets = <&rst TH1520_RESET_ID_HDMI>,
+ <&rst TH1520_RESET_ID_HDMI_APB>;
+ reset-names = "main", "apb";
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ hdmi_in: endpoint {
+ remote-endpoint = <&dpu_out_dp1>;
+ };
+ };
+
+ hdmi_out_port: port@1 {
+ reg = <1>;
+ };
+ };
+ };
+
+ dpu: display@ffef600000 {
+ compatible = "thead,th1520-dc8200", "verisilicon,dc";
+ reg = <0xff 0xef600000 0x0 0x100000>;
+ interrupts = <93 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_vo CLK_DPU_CCLK>,
+ <&clk_vo CLK_DPU_ACLK>,
+ <&clk_vo CLK_DPU_HCLK>,
+ <&clk_vo CLK_DPU_PIXELCLK0>,
+ <&clk_vo CLK_DPU_PIXELCLK1>;
+ clock-names = "core", "axi", "ahb", "pix0", "pix1";
+ resets = <&rst TH1520_RESET_ID_DPU_CORE>,
+ <&rst TH1520_RESET_ID_DPU_AXI>,
+ <&rst TH1520_RESET_ID_DPU_AHB>;
+ reset-names = "core", "axi", "ahb";
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dpu_port1: port@1 {
+ reg = <1>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ dpu_out_dp1: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&hdmi_in>;
+ };
+ };
+ };
+ };
+
dmac0: dma-controller@ffefc00000 {
compatible = "snps,axi-dma-1.01a";
reg = <0xff 0xefc00000 0x0 0x1000>;
--
2.52.0