- 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. +- 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>; }; };