| Message ID | 20231023020718.1276000-1-chancel.liu@nxp.com (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | [v4,1/2] ASoC: dt-bindings: sound-card-common: List sound widgets ignoring system suspend | expand |
On Mon, Oct 23, 2023 at 10:07:17AM +0800, Chancel Liu wrote: > Add a property to list audio sound widgets which are marked ignoring > system suspend. Paths between these endpoints are still active over > suspend of the main application processor that the current operating > system is running. Perhaps it would be better to define components used for low power audio rather than the OS mode that gets used. Isn't LPA just audio handling that doesn't require the OS CPU to be involved? So the state of the CPU is kind of orthogonal. Rob
On Thu, Oct 26, 2023 at 12:58:42PM -0500, Rob Herring wrote: > On Mon, Oct 23, 2023 at 10:07:17AM +0800, Chancel Liu wrote: > > Add a property to list audio sound widgets which are marked ignoring > > system suspend. Paths between these endpoints are still active over > > suspend of the main application processor that the current operating > > system is running. > Perhaps it would be better to define components used for low power > audio rather than the OS mode that gets used. Isn't LPA just audio > handling that doesn't require the OS CPU to be involved? So the state of > the CPU is kind of orthogonal. Not really - you can have bypass paths that don't touch the AP but which will have the power cut if the AP goes into suspend and it can be a system integration decision which components that will be true for. Often it's an inflexible PMIC/MCU setup managing the lowest system power states. The pure low power audio bit we should already be able to figure out.
diff --git a/Documentation/devicetree/bindings/sound/sound-card-common.yaml b/Documentation/devicetree/bindings/sound/sound-card-common.yaml index 3a941177f684..721950f65748 100644 --- a/Documentation/devicetree/bindings/sound/sound-card-common.yaml +++ b/Documentation/devicetree/bindings/sound/sound-card-common.yaml @@ -17,6 +17,13 @@ properties: pair of strings, the first being the connection's sink, the second being the connection's source. + ignore-suspend-widgets: + $ref: /schemas/types.yaml#/definitions/non-unique-string-array + description: | + A list of audio sound widgets which are marked ignoring system suspend. + Paths between these endpoints are still active over suspend of the main + application processor that the current operating system is running. + model: $ref: /schemas/types.yaml#/definitions/string description: User specified audio sound card name
Add a property to list audio sound widgets which are marked ignoring system suspend. Paths between these endpoints are still active over suspend of the main application processor that the current operating system is running. Signed-off-by: Chancel Liu <chancel.liu@nxp.com> --- .../devicetree/bindings/sound/sound-card-common.yaml | 7 +++++++ 1 file changed, 7 insertions(+)