Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-23 12:42:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

ASoC: dt-bindings: renesas,rz-ssi: Update slave dma channel configuration parameter

Browse Source 
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: Biju Das <biju.das.jz@bp.renesas.com>
Reviewed-by: Lad 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: Mark Brown <broonie@kernel.org>
This commit is contained in:
Biju Das 2021-08-13 10:11:55 +01:00 committed by Mark Brown
parent 03e786bd43
commit bed0b1c1e8
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 20 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

22
Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml
View File

@ -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>;
};