On Tue, Mar 19, 2024 at 10:22:37AM +0200, Tomi Valkeinen wrote: > The DP subsystem for ZynqMP support audio via two channels, and the DP > DMA has dma-engines for those channels. For some reason the DT binding > has not specified those channels, even if the picture included in > xlnx,zynqmp-dpsub.yaml shows "2 x aud" DMAs. New required entries is an ABI change. This message kind of indicates it was a mistake, but should be a lot more explicit. Are things broken without the entries? Need 'Fixes'? > > Add the two audio DMAs to the binding. > > Signed-off-by: Tomi Valkeinen <tomi.valkeinen@xxxxxxxxxxxxxxxx> > --- > .../devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml | 10 ++++++++-- > 1 file changed, 8 insertions(+), 2 deletions(-) > > diff --git a/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml b/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml > index 554f9d5809d4..6b754d4f260e 100644 > --- a/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml > +++ b/Documentation/devicetree/bindings/display/xlnx/xlnx,zynqmp-dpsub.yaml > @@ -100,12 +100,16 @@ properties: > - description: Video layer, plane 1 (U/V or U) > - description: Video layer, plane 2 (V) > - description: Graphics layer > + - description: Audio channel 0 > + - description: Audio channel 1 > dma-names: > items: > - const: vid0 > - const: vid1 > - const: vid2 > - const: gfx0 > + - const: aud0 > + - const: aud1 > > phys: > description: PHYs for the DP data lanes > @@ -194,11 +198,13 @@ examples: > power-domains = <&pd_dp>; > resets = <&reset ZYNQMP_RESET_DP>; > > - dma-names = "vid0", "vid1", "vid2", "gfx0"; > + dma-names = "vid0", "vid1", "vid2", "gfx0", "aud0", "aud1"; > dmas = <&xlnx_dpdma 0>, > <&xlnx_dpdma 1>, > <&xlnx_dpdma 2>, > - <&xlnx_dpdma 3>; > + <&xlnx_dpdma 3>, > + <&xlnx_dpdma 4>, > + <&xlnx_dpdma 5>; > > phys = <&psgtr 1 PHY_TYPE_DP 0 3>, > <&psgtr 0 PHY_TYPE_DP 1 3>; > > -- > 2.34.1 >
