tinker board 2s android11 dsi 屏幕驱动

&vopb {
 //打开vopb的功能
    status = "okay";
 //指定vopb的时钟，接HDMI的那个VOP clock-parents必须指定为PLL_VPLL
    assigned-clocks = <&cru DCLK_VOP0_DIV>;
    assigned-clock-parents = <&cru PLL_VPLL>;
    support-multi-area;
};
//启用mmu
&vopb_mmu {
    status = "okay";
};
&vopl {
 //打开vopl的功能
    status = "okay";
 //指定vopl的时钟,不接HDMI的VOP clock-parents用PLL_CPLL
    assigned-clocks = <&cru DCLK_VOP1_DIV>;
    assigned-clock-parents = <&cru PLL_CPLL>;
    support-multi-area;
};
//启用mmu
&vopl_mmu {
    status = "okay";
};

&dsi {
    status = "okay";
 //配置dsi每个lane的频率，一般出现花屏，条纹等可以调整这个值改善
 //如果这个值不配置，DSI驱动会自动计算
    rockchip,lane-rate = <500>;
 panel@0 {
 //屏幕的具体参数，使用dsi接口的屏幕其属性必须是simple-panel-dsi
        compatible = "simple-panel-dsi";
        reg = <0>;
 //背光，即使不启用背光调节功能，这个属性也必须配置，且backlight的节点必须是有效的
 //否则驱动会加载失败
        backlight = <&backlight>;
 //使能脚，如果enable 接到一个gpio，这个属性必须设置
        enable-gpios = <&gpio0 6 GPIO_ACTIVE_LOW>;
 //这些根据规格书填写即可
        bpc = <8>;
        bus-format = <0x100a>;
        width-mm = <476>;
        height-mm = <267>;
        dsi,flags = <3>;
        dsi,format = <0>;
        dsi,lanes = <4>;
 //屏幕初始化序列，屏厂会提供
        panel-init-sequence = [
            15 00 02 80 ac
            15 00 02 81 b8
            15 00 02 82 09
            15 00 02 83 78
            15 00 02 84 7f
            15 00 02 85 bb
            15 00 02 86 70
        ];
 display-timings {
            native-mode = <&timing2>;
 //下面timing的参数按wiki上面的
 timing2: timing2 {
                clock-frequency = <52000000>; //DCLK
                hactive = <1024>;             //hactive
                vactive = <600>;              //vactive
                hfront-porch = <160>;         //hfp
                hback-porch = <160>;          //hbp
                hsync-len = <10>;             //hsa
                vfront-porch = <12>;          //vfp
                vsync-len = <1>;              //vsa
                vback-porch = <23>;           //vbp
                hsync-active = <0>;           //hync 极性控制 置 1 反转极性
                vsync-active = <0>;           //vsync 极性控制 置 1 反转极性
                de-active = <1>;              //DEN 极性控制
                pixelclk-active = <0>;        //dclk 极性控制
            };
        };
 //这个ports是panel的，这个port要和dsi对应的port绑定
 ports {
            #address-cells = <1>;
            #size-cells = <0>;
 port@0 {
                reg = <0>;
 panel_in_dsi: endpoint {
                    remote-endpoint = <&dsi_out_panel>;
                };
            };
        };
    };
 //这个ports是dsi的，这个port要和目标panel的port绑定
 ports {
        #address-cells = <1>;
        #size-cells = <0>;
 port@1 {
            reg = <1>;
 dsi_out_panel: endpoint {
                remote-endpoint = <&panel_in_dsi>;
            };
        };
    };
};

//这个属性设置为okay，这样hdmi可以显示logo
&route_hdmi {
    status = "okay";
    connect = <&vopb_out_hdmi>;
};
//这个属性设置为okay，这样dsi可以显示logo
&route_dsi{
    status = "okay";
    connect = <&vopl_out_dsi>;
};
//dsi属性设置为okay时，不与它绑定的那个要设置为disabled
&dsi_in_vopb {
    status = "disabled";
};
//hdmi属性设置为okay时，不与它绑定的那个要设置为disabled
&hdmi_in_vopl {
    status = "disabled";
};

./build.sh –K

PRODUCT_PROPERTY_OVERRIDES += \
    vendor.gralloc.no_afbc_for_fb_target_layer=1 \
    vendor.gralloc.no_afbc_for_sf_client_layer=1 \
    vendor.hwc.device.primary=HDMI-A \
    vendor.hwc.device.extend=DSI