Hi, Yongqiang: On Fri, 2020-01-03 at 11:12 +0800, Yongqiang Niu wrote: > Update device tree binding documention for rdma_fifo_size > > Signed-off-by: Yongqiang Niu <yongqiang.niu@xxxxxxxxxxxx> > --- > .../devicetree/bindings/display/mediatek/mediatek,disp.txt | 13 +++++++++++++ > 1 file changed, 13 insertions(+) > > diff --git a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt > index 681502e..34bef44 100644 > --- a/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt > +++ b/Documentation/devicetree/bindings/display/mediatek/mediatek,disp.txt > @@ -70,6 +70,10 @@ Required properties (DMA function blocks): > argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt > for details. > > +Required properties (DMA function blocks): > +- mediatek,rdma_fifo_size: rdma fifo size may be different even in same SOC, add this > + property to the corresponding rdma I think "mediatek,rdma_fifo_size" is not a 'required' property. In mt8173.dtsi [1], there is no mediatek,rdma_fifo_size in rdma0, rdma1, and rdma2. So I think you should move this to 'optional' property. [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/arch/arm64/boot/dts/mediatek/mt8173.dtsi?h=v5.5-rc4 Regards, CK > + > Examples: > > mmsys: clock-controller@14000000 { > @@ -211,3 +215,12 @@ od@14023000 { > power-domains = <&scpsys MT8173_POWER_DOMAIN_MM>; > clocks = <&mmsys CLK_MM_DISP_OD>; > }; > + > +rdma1: rdma@1400c000 { > + compatible = "mediatek,mt8183-disp-rdma"; > + reg = <0 0x1400c000 0 0x1000>; > + interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_LOW>; > + power-domains = <&scpsys MT8183_POWER_DOMAIN_DISP>; > + clocks = <&mmsys CLK_MM_DISP_RDMA1>; > + mediatek,rdma_fifo_size = <2048>; > +}; > \ No newline at end of file
