[PATCH v5 21/21] riscv: dts: thead: Add GPU node to TH1520 device tree

Michal Wilczynski
2025-02-19T14:03:20Z

Add a device tree node for the IMG BXM-4-64 GPU present in the T-HEAD
TH1520 SoC used by the Lichee Pi 4A board. This node enables support for
the GPU using the drm/imagination driver.

By adding this node, the kernel can recognize and initialize the GPU,
providing graphics acceleration capabilities on the Lichee Pi 4A and
other boards based on the TH1520 SoC.

Signed-off-by: Michal Wilczynski <m.wilczynski@samsung.com>
---
arch/riscv/boot/dts/thead/th1520.dtsi | 13 +++++++++++++
1 file changed, 13 insertions(+)

diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
index 6b34aab4b455..c4fa616efac8 100644
--- a/arch/riscv/boot/dts/thead/th1520.dtsi
+++ b/arch/riscv/boot/dts/thead/th1520.dtsi
@@ -498,6 +498,19 @@ clk: clock-controller@ffef010000 {
#clock-cells = <1>;
};

+ gpu: gpu@ffef400000 {
+ compatible = "thead,th1520-gpu", "img,img-bxm";
+ reg = <0xff 0xef400000 0x0 0x100000>;
+ interrupt-parent = <&plic>;
+ interrupts = <102 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_vo CLK_GPU_CORE>,
+ <&clk_vo CLK_GPU_MEM>,
+ <&clk_vo CLK_GPU_CFG_ACLK>;
+ clock-names = "core", "mem", "sys";
+ power-domains = <&aon TH1520_GPU_PD>;
+ resets = <&rst TH1520_RESET_ID_GPU>;
+ };
+
rst: reset-controller@ffef528000 {
compatible = "thead,th1520-reset";
reg = <0xff 0xef528000 0x0 0x4f>;
--
2.34.1