| Message ID | 20191005164320.06.I0df85fe54162426e31f60a589d9b461c65df2faa@changeid (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | ASoC: mediatek: mt8183-mt6358-ts3a227-max98357: support WoV | expand |
On Sat, Oct 05, 2019 at 04:55:05PM +0800, Tzung-Bi Shih wrote: > - Add "ec-shm" for binding to shared memory exposed by EC. > - Add "memory-region" for binding to memory region shared by AP. > > Signed-off-by: Tzung-Bi Shih <tzungbi@google.com> > --- > .../bindings/sound/google,cros-ec-codec.txt | 20 +++++++++++++++++++ > 1 file changed, 20 insertions(+) > > diff --git a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt > index 0ce9fafc78e2..cb46bc082b4b 100644 > --- a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt > +++ b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt > @@ -10,8 +10,26 @@ Required properties: > - compatible: Must contain "google,cros-ec-codec" > - #sound-dai-cells: Should be 1. The cell specifies number of DAIs. > > +Optional properties: > +- ec-shm: Shared memory region from EC. It contains 3 unsigned 32-bit > + integer. The first 2 integers combine to become an unsigned > + 64-bit address. The last one integer is length of the shared > + memory. This is an address accessible to the main CPU? If so, then it really should be using 'reg' and be translatable. > +- memory-region: Shared memory region to EC. A "shared-dma-pool". See > + ../reserved-memory/reserved-memory.txt for details. > + > Example: > > +{ > + ... > + > + reserved_mem: reserved_mem { > + compatible = "shared-dma-pool"; > + reg = <0 0x52800000 0 0x100000>; > + no-map; > + }; > +} > + > cros-ec@0 { > compatible = "google,cros-ec-spi"; > > @@ -20,5 +38,7 @@ cros-ec@0 { > cros_ec_codec: ec-codec { > compatible = "google,cros-ec-codec"; > #sound-dai-cells = <1>; > + ec-shm = <0x0 0x10500000 0x80000>; > + memory-region = <&reserved_mem>; > }; > }; > -- > 2.23.0.581.g78d2f28ef7-goog >
diff --git a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt index 0ce9fafc78e2..cb46bc082b4b 100644 --- a/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt +++ b/Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt @@ -10,8 +10,26 @@ Required properties: - compatible: Must contain "google,cros-ec-codec" - #sound-dai-cells: Should be 1. The cell specifies number of DAIs. +Optional properties: +- ec-shm: Shared memory region from EC. It contains 3 unsigned 32-bit + integer. The first 2 integers combine to become an unsigned + 64-bit address. The last one integer is length of the shared + memory. +- memory-region: Shared memory region to EC. A "shared-dma-pool". See + ../reserved-memory/reserved-memory.txt for details. + Example: +{ + ... + + reserved_mem: reserved_mem { + compatible = "shared-dma-pool"; + reg = <0 0x52800000 0 0x100000>; + no-map; + }; +} + cros-ec@0 { compatible = "google,cros-ec-spi"; @@ -20,5 +38,7 @@ cros-ec@0 { cros_ec_codec: ec-codec { compatible = "google,cros-ec-codec"; #sound-dai-cells = <1>; + ec-shm = <0x0 0x10500000 0x80000>; + memory-region = <&reserved_mem>; }; };
- Add "ec-shm" for binding to shared memory exposed by EC. - Add "memory-region" for binding to memory region shared by AP. Signed-off-by: Tzung-Bi Shih <tzungbi@google.com> --- .../bindings/sound/google,cros-ec-codec.txt | 20 +++++++++++++++++++ 1 file changed, 20 insertions(+)