| Message ID | 20240120135529.899403-3-tim@feathertop.org |
|---|---|
| State | New |
| Headers | show |
| Series | dt-bindings: rockchip: Add support for rk809 audio codec | expand |
On 1/22/24 19:14, Krzysztof Kozlowski wrote: > On 20/01/2024 14:55, Tim Lunn wrote: >> Rockchip RK809 shares the same audio codec block as the rk817 mfd, and >> is compatible with the existing rk817_codec driver. > Please use subject prefixes matching the subsystem. You can get them for > example with `git log --oneline -- DIRECTORY_OR_FILE` on the directory > your patch is touching. Ok I will check this. > >> This patch introduces to the binding the standard property #sound-dai-cells >> and also an optional codec child node to hold codec specific properties. >> Currently there is only one property in this node however the downstream >> driver shows a number of other properties that are supported by the codec >> hardware, that could be implemented in the future. This maintains the >> existing driver ABI and keeps consistency with the rk817 bindings. > So you are adding a new node? Just for one property? No, just put it > into parent node. The existing upstream codec driver parses the property from the "codec" sub-node, if I move it to the parent node here, I will need to patch the codec driver to search in both locations, so as to not break the rk817 bindings. If that is preferred, I can do it that way. > > Downstream driver does not matter at all in that aspect. > The codec hardware supports additional properties but they are not implemented currently in upstream driver. > > Best regards, > Krzysztof >
diff --git a/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml b/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml index eb057607dc54..be0616201f52 100644 --- a/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml +++ b/Documentation/devicetree/bindings/mfd/rockchip,rk809.yaml @@ -12,7 +12,7 @@ maintainers: description: | Rockchip RK809 series PMIC. This device consists of an i2c controlled MFD - that includes regulators, an RTC, and power button. + that includes regulators, an RTC, a power button, and an audio codec. properties: compatible: @@ -93,6 +93,22 @@ properties: unevaluatedProperties: false unevaluatedProperties: false + '#sound-dai-cells': + const: 0 + + codec: + description: | + The child node for the codec to hold additional properties. If no + additional properties are required for the codec, this node can be + omitted. + type: object + additionalProperties: false + properties: + rockchip,mic-in-differential: + type: boolean + description: + Describes if the microphone uses differential mode. + allOf: - if: properties: @@ -137,6 +153,7 @@ examples: pinctrl-0 = <&pmic_int_l_pin>; rockchip,system-power-controller; wakeup-source; + #sound-dai-cells = <0>; vcc1-supply = <&vcc_sysin>; vcc2-supply = <&vcc_sysin>; @@ -281,5 +298,9 @@ examples: }; }; }; + + rk817_codec: codec { + rockchip,mic-in-differential; + }; }; };
Rockchip RK809 shares the same audio codec block as the rk817 mfd, and is compatible with the existing rk817_codec driver. This patch introduces to the binding the standard property #sound-dai-cells and also an optional codec child node to hold codec specific properties. Currently there is only one property in this node however the downstream driver shows a number of other properties that are supported by the codec hardware, that could be implemented in the future. This maintains the existing driver ABI and keeps consistency with the rk817 bindings. Signed-off-by: Tim Lunn <tim@feathertop.org> --- Changes in v3: - split out clocks into separate patch and group example properties where properties are introduced. - remove descriptions from #sound-dai-cells node .../bindings/mfd/rockchip,rk809.yaml | 23 ++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-)