[PATCH v4 18/18] riscv: dts: thead: Add GPU node to TH1520 device tree

Michal Wilczynski
2025-01-28T19:48:53Z

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 | 12 ++++++++++++
1 file changed, 12 insertions(+)

diff --git a/arch/riscv/boot/dts/thead/th1520.dtsi b/arch/riscv/boot/dts/thead/th1520.dtsi
index bdbb1b985b0b..b4b3add0d98d 100644
--- a/arch/riscv/boot/dts/thead/th1520.dtsi
+++ b/arch/riscv/boot/dts/thead/th1520.dtsi
@@ -498,6 +498,18 @@ 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_CFG_ACLK>;
+ clock-names = "core", "mem";
+ 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