ASoC: dt-bindings: cros_ec_codec: add SHM bindings (3fe5a963) · Commits · 戴 / test

- Add "reg" for binding to shared memory exposed by EC. - Add "memory-region" for binding to memory region shared by AP. Acked-by:

Documentation/devicetree/bindings/sound/google,cros-ec-codec.txt

+20 −0

Original line number	Diff line number	Diff line
		@@ -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:
		- reg: Pysical base address and length of shared memory region from EC.
		It contains 3 unsigned 32-bit integer. The first 2 integers
		combine to become an unsigned 64-bit physical 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>;
		reg = <0x0 0x10500000 0x80000>;
		memory-region = <&reserved_mem>;
		};
		};