RK3399 Linux rga 调试记录_&cru hclk_rga_pre

一 开发环境

开发板：Firefly AIO-3399J

系统：Debian9

二 内核修改

//arch/arm64/boot/dts/rockchip/rk3399-linux.dtsi
+	rga: rga@ff680000 {
+		compatible = "rockchip,rga2";
+		dev_mode = <1>;
+		reg = <0x0 0xff680000 0x0 0x1000>;
+		interrupts = <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH 0>;
+		clocks = <&cru ACLK_RGA>, <&cru HCLK_RGA>,<&cru SCLK_RGA_CORE>;
+		clock-names = "aclk_rga", "hclk_rga","clk_rga";
+		power-domains = <&power RK3399_PD_RGA>;
+		dma-coherent;
+		status = "okay";
+	};
 
​
//arch/arm64/configs/firefly_linux_defconfig
+CONFIG_ROCKCHIP_RGA2=y
 
​

更新内核查看/dev/rga2节点是否存在

三 DEMO编译

1、下载代码到开发板的/opt/目录下，并重命名为librga_linux

2、复制代码中的demo到opt目录下

/opt