On Thu, Jan 21, 2021 at 3:18 PM Irui Wang <irui.wang@xxxxxxxxxxxx> wrote:
>
> Updates binding document since the avc and vp8 hardware encoder in
> MT8173 are now separated. Separate "mediatek,mt8173-vcodec-enc" to
> "mediatek,mt8173-vcodec-vp8-enc" and "mediatek,mt8173-vcodec-avc-enc".
>
> Signed-off-by: Hsin-Yi Wang <hsinyi@xxxxxxxxxxxx>
> Signed-off-by: Maoguang Meng <maoguang.meng@xxxxxxxxxxxx>
> Signed-off-by: Irui Wang <irui.wang@xxxxxxxxxxxx>
>
> ---
> .../bindings/media/mediatek-vcodec.txt | 58 ++++++++++---------
> 1 file changed, 31 insertions(+), 27 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt
> index 8217424fd4bd..f85276e629bf 100644
> --- a/Documentation/devicetree/bindings/media/mediatek-vcodec.txt
> +++ b/Documentation/devicetree/bindings/media/mediatek-vcodec.txt
> @@ -4,7 +4,9 @@ Mediatek Video Codec is the video codec hw present in Mediatek SoCs which
> supports high resolution encoding and decoding functionalities.
>
> Required properties:
> -- compatible : "mediatek,mt8173-vcodec-enc" for MT8173 encoder
> +- compatible : must be one of the following string:
> + "mediatek,mt8173-vcodec-vp8-enc" for mt8173 vp8 encoder.
> + "mediatek,mt8173-vcodec-avc-enc" for mt8173 avc encoder.
IMHO "mediatek,mt8173-vcodec-enc-vp8" and
"mediatek,mt8173-vcodec-enc-avc" would be more logical. Also to keep a
bit of backward compatibility, shall we also allow
"mediatek,mt8173-vcodec-enc" to be an alias for
"mediatek,mt8173-vcodec-enc-avc"? The line above would become
"mediatek,mt8173-vcodec-enc-avc" or "mediatek,mt8173-vcodec-enc" for
mt8173 avc encoder.
> "mediatek,mt8183-vcodec-enc" for MT8183 encoder.
> "mediatek,mt8173-vcodec-dec" for MT8173 decoder.
> - reg : Physical base address of the video codec registers and length of
> @@ -13,10 +15,11 @@ Required properties:
> - mediatek,larb : must contain the local arbiters in the current Socs.
> - clocks : list of clock specifiers, corresponding to entries in
> the clock-names property.
> -- clock-names: encoder must contain "venc_sel_src", "venc_sel",,
> - "venc_lt_sel_src", "venc_lt_sel", decoder must contain "vcodecpll",
> - "univpll_d2", "clk_cci400_sel", "vdec_sel", "vdecpll", "vencpll",
> - "venc_lt_sel", "vdec_bus_clk_src".
> +- clock-names:
> + avc venc must contain "venc_sel";
> + vp8 venc must contain "venc_lt_sel";
Can't we use "venc_sel" for both avc and vp8, since they are different
nodes now? That way we can just say
encoder must contain "venc_sel"
which is clearer and also simpler on the code side.
> + decoder must contain "vcodecpll", "univpll_d2", "clk_cci400_sel",
> + "vdec_sel", "vdecpll", "vencpll", "venc_lt_sel", "vdec_bus_clk_src".
> - iommus : should point to the respective IOMMU block with master port as
> argument, see Documentation/devicetree/bindings/iommu/mediatek,iommu.txt
> for details.
> @@ -80,14 +83,10 @@ vcodec_dec: vcodec@16000000 {
> assigned-clock-rates = <0>, <0>, <0>, <1482000000>, <800000000>;
> };
>
> - vcodec_enc: vcodec@18002000 {
> - compatible = "mediatek,mt8173-vcodec-enc";
> - reg = <0 0x18002000 0 0x1000>, /*VENC_SYS*/
> - <0 0x19002000 0 0x1000>; /*VENC_LT_SYS*/
> - interrupts = <GIC_SPI 198 IRQ_TYPE_LEVEL_LOW>,
> - <GIC_SPI 202 IRQ_TYPE_LEVEL_LOW>;
> - mediatek,larb = <&larb3>,
> - <&larb5>;
> +vcodec_enc: vcodec@18002000 {
Let's use vcodec_enc_avc as a label?
> + compatible = "mediatek,mt8173-vcodec-avc-enc";
> + reg = <0 0x18002000 0 0x1000>;
> + interrupts = <GIC_SPI 198 IRQ_TYPE_LEVEL_LOW>;
> iommus = <&iommu M4U_PORT_VENC_RCPU>,
> <&iommu M4U_PORT_VENC_REC>,
> <&iommu M4U_PORT_VENC_BSDMA>,
> @@ -98,8 +97,20 @@ vcodec_dec: vcodec@16000000 {
> <&iommu M4U_PORT_VENC_REF_LUMA>,
> <&iommu M4U_PORT_VENC_REF_CHROMA>,
> <&iommu M4U_PORT_VENC_NBM_RDMA>,
> - <&iommu M4U_PORT_VENC_NBM_WDMA>,
> - <&iommu M4U_PORT_VENC_RCPU_SET2>,
> + <&iommu M4U_PORT_VENC_NBM_WDMA>;
> + mediatek,larb = <&larb3>;
> + mediatek,vpu = <&vpu>;
> + clocks = <&topckgen CLK_TOP_VENC_SEL>;
> + clock-names = "venc_sel";
> + assigned-clocks = <&topckgen CLK_TOP_VENC_SEL>;
> + assigned-clock-parents = <&topckgen CLK_TOP_VCODECPLL>;
> + };
> +
> +vcodec_enc_lt: vcodec@19002000 {
And here the label should probably be "vcodec_enc_vp8" for consistency.
> + compatible = "mediatek,mt8173-vcodec-vp8-enc";
> + reg = <0 0x19002000 0 0x1000>; /* VENC_LT_SYS */
> + interrupts = <GIC_SPI 202 IRQ_TYPE_LEVEL_LOW>;
> + iommus = <&iommu M4U_PORT_VENC_RCPU_SET2>,
> <&iommu M4U_PORT_VENC_REC_FRM_SET2>,
> <&iommu M4U_PORT_VENC_BSDMA_SET2>,
> <&iommu M4U_PORT_VENC_SV_COMA_SET2>,
> @@ -108,17 +119,10 @@ vcodec_dec: vcodec@16000000 {
> <&iommu M4U_PORT_VENC_CUR_CHROMA_SET2>,
> <&iommu M4U_PORT_VENC_REF_LUMA_SET2>,
> <&iommu M4U_PORT_VENC_REC_CHROMA_SET2>;
> + mediatek,larb = <&larb5>;
> mediatek,vpu = <&vpu>;
> - clocks = <&topckgen CLK_TOP_VENCPLL_D2>,
> - <&topckgen CLK_TOP_VENC_SEL>,
> - <&topckgen CLK_TOP_UNIVPLL1_D2>,
> - <&topckgen CLK_TOP_VENC_LT_SEL>;
> - clock-names = "venc_sel_src",
> - "venc_sel",
> - "venc_lt_sel_src",
> - "venc_lt_sel";
> - assigned-clocks = <&topckgen CLK_TOP_VENC_SEL>,
> - <&topckgen CLK_TOP_VENC_LT_SEL>;
> - assigned-clock-parents = <&topckgen CLK_TOP_VENCPLL_D2>,
> - <&topckgen CLK_TOP_UNIVPLL1_D2>;
> + clocks = <&topckgen CLK_TOP_VENC_LT_SEL>;
> + clock-names = "venc_lt_sel";
> + assigned-clocks = <&topckgen CLK_TOP_VENC_LT_SEL>;
> + assigned-clock-parents = <&topckgen CLK_TOP_VCODECPLL_370P5>;
> };
> --
> 2.18.0
>
