1 # SPDX-License-Identifier: GPL-2.0-only
4 $id: http://devicetree.org/schemas/sound/google,cros-ec-codec.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Audio codec controlled by ChromeOS EC
10 - Cheng-Yi Chiang <cychiang@chromium.org>
11 - Tzung-Bi Shih <tzungbi@kernel.org>
14 Google's ChromeOS EC codec is a digital mic codec provided by the
15 Embedded Controller (EC) and is controlled via a host-command
16 interface. An EC codec node should only be found inside the "codecs"
17 subnode of a cros-ec node.
18 (see Documentation/devicetree/bindings/mfd/google,cros-ec.yaml).
21 - $ref: dai-common.yaml#
25 const: google,cros-ec-codec
33 Physical base address and length of shared memory region from EC.
34 It contains 3 unsigned 32-bit integer. The first 2 integers
35 combine to become an unsigned 64-bit physical address.
36 The last one integer is the length of the shared memory.
41 Shared memory region to EC. A "shared-dma-pool".
42 See ../reserved-memory/reserved-memory.txt for details.
48 unevaluatedProperties: false
52 reserved_mem: reserved-mem@52800000 {
53 compatible = "shared-dma-pool";
54 reg = <0x52800000 0x100000>;
61 compatible = "google,cros-ec-spi";
69 cros_ec_codec: ec-codec@10500000 {
70 compatible = "google,cros-ec-codec";
71 #sound-dai-cells = <1>;
72 reg = <0x0 0x10500000 0x80000>;
73 memory-region = <&reserved_mem>;