Unverified Commit bed0b1c1 authored by Biju Das's avatar Biju Das Committed by Mark Brown
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ASoC: dt-bindings: renesas,rz-ssi: Update slave dma channel configuration parameter 



The DMAC on RZ/G2L has specific slave channel configuration
parameters for SSI.
This patch updates the dmas description and example node to include
the encoded slave channel configuration.

Signed-off-by: default avatarBiju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: default avatarLad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Link: https://lore.kernel.org/r/20210813091156.10700-3-biju.das.jz@bp.renesas.com


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 03e786bd

Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml

+20 −2
Original line number Diff line number Diff line
@@ -48,6 +48,24 @@ properties: 
  dmas:

    minItems: 1

    maxItems: 2

    description:

      The first cell represents a phandle to dmac

      The second cell specifies the encoded MID/RID values of the SSI port

      connected to the DMA client and the slave channel configuration

      parameters.

      bits[0:9]   - Specifies MID/RID value of a SSI channel as below

                    MID/RID value of SSI rx0 = 0x256

                    MID/RID value of SSI tx0 = 0x255

                    MID/RID value of SSI rx1 = 0x25a

                    MID/RID value of SSI tx1 = 0x259

                    MID/RID value of SSI rt2 = 0x25f

                    MID/RID value of SSI rx3 = 0x262

                    MID/RID value of SSI tx3 = 0x261

      bit[10]     - HIEN = 1, Detects a request in response to the rising edge

                    of the signal

      bit[11]     - LVL = 0, Detects based on the edge

      bits[12:14] - AM = 2, Bus cycle mode

      bit[15]     - TM = 0, Single transfer mode



  dma-names:

    oneOf:
@@ -93,8 +111,8 @@ examples: 
            clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2";

            power-domains = <&cpg>;

            resets = <&cpg R9A07G044_SSI0_RST_M2_REG>;

            dmas = <&dmac 0x255>,

                   <&dmac 0x256>;

            dmas = <&dmac 0x2655>,

                   <&dmac 0x2656>;

            dma-names = "tx", "rx";

            #sound-dai-cells = <0>;

    };