The mt8188 SoC provides an HDMI encoder and PHY fed through the DPI1 interface attached to the vdosys1 display data path.
Compared to the kernel, the following U-Boot specific properties are added to the hdmi node: - a "memory-region" phandle to the framebuffer reserved-memory region - phandles to all the components of the pipeline, since U-Boot has no DRM framework to walk the graph Signed-off-by: Julien Stephan <[email protected]> --- arch/arm/dts/mt8188-u-boot.dtsi | 21 +++++++++++++++++++++ 1 file changed, 21 insertions(+) diff --git a/arch/arm/dts/mt8188-u-boot.dtsi b/arch/arm/dts/mt8188-u-boot.dtsi index 923e52522de..26a2bddd24e 100644 --- a/arch/arm/dts/mt8188-u-boot.dtsi +++ b/arch/arm/dts/mt8188-u-boot.dtsi @@ -79,3 +79,24 @@ &mmc0 { bootph-pre-ram; }; + +&hdmi { + /* U-Boot specific: the framebuffer lives in this reserved region */ + memory-region = <&framebuffer>; + + /* + * U-Boot specific: U-Boot has no DRM framework, so the video + * driver locates the components of the display pipeline directly + * through these phandles. + */ + mediatek,dpi1 = <&dpi1>; + mediatek,vdosys1 = <&vdosys1_pipeline>; + mediatek,merge3 = <&merge3>; + mediatek,merge5 = <&merge5>; + mediatek,mixer = <ðdr0>; + mediatek,mutex1 = <&mutex1>; + mediatek,padding4 = <&padding4>; + mediatek,padding5 = <&padding5>; + mediatek,rdma4 = <&vdo1_rdma4>; + mediatek,rdma5 = <&vdo1_rdma5>; +}; -- 2.54.0
