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    SubjectRe: [PATCH 1/3] dt-bindings: media: mtk-vcodec: Separating mtk vcodec encoder node
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    On Wed, 2021-02-03 at 19:44 +0900, Alexandre Courbot wrote:
    > On Thu, Jan 21, 2021 at 3:18 PM Irui Wang <irui.wang@mediatek.com> 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@chromium.org>
    > > Signed-off-by: Maoguang Meng <maoguang.meng@mediatek.com>
    > > Signed-off-by: Irui Wang <irui.wang@mediatek.com>
    > >
    > > ---
    > > .../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.
    >

    will be updated in the next version.

    > > "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.
    >

    ditto

    > > + 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?

    ditto

    >
    > > + 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.

    ditto

    >
    >
    >
    > > + 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
    > >

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