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https://git.kernel.org/pub/scm/linux/kernel/git/herbert/cryptodev-2.6.git
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3d6a17fccc
Move several embedded controller bindings (like ChromeOS EC, Gateworks System Controller and Kontron sl28cpld Board Management) to new subdirectory "embedded-controller" matching their purpose. An embedded controller (EC) is a discrete component that contains a microcontroller (i.e. a small CPU running a small firmware without operating system) mounted into a larger computer system running a fully fledged operating system that needs to utilize the embedded controller as part of its operation. So far the EC bindings were split between "mfd" and "platform" directory. MFD name comes from Linux, not hardware, and "platform" is a bit too generic. Rename Gateworks GSC and Huawei Gaokun filenames to match compatible, as preferred for bindings. Acked-by: Michael Walle <mwalle@kernel.org> # for sl28cpld Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> Acked-by: Mark Brown <broonie@kernel.org> Reviewed-by: "Rob Herring (Arm)" <robh@kernel.org> Link: https://lore.kernel.org/r/20250825081201.9775-2-krzysztof.kozlowski@linaro.org Signed-off-by: Lee Jones <lee@kernel.org>
79 lines
2.1 KiB
YAML
79 lines
2.1 KiB
YAML
# SPDX-License-Identifier: GPL-2.0-only
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/sound/google,cros-ec-codec.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Audio codec controlled by ChromeOS EC
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maintainers:
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- Cheng-Yi Chiang <cychiang@chromium.org>
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- Tzung-Bi Shih <tzungbi@kernel.org>
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description: |
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Google's ChromeOS EC codec is a digital mic codec provided by the
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Embedded Controller (EC) and is controlled via a host-command
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interface. An EC codec node should only be found inside the "codecs"
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subnode of a cros-ec node.
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(see Documentation/devicetree/bindings/embedded-controller/google,cros-ec.yaml).
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allOf:
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- $ref: dai-common.yaml#
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properties:
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compatible:
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const: google,cros-ec-codec
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"#sound-dai-cells":
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const: 1
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reg:
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items:
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- description: |
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Physical base address and length of shared memory region from EC.
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It contains 3 unsigned 32-bit integer. The first 2 integers
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combine to become an unsigned 64-bit physical address.
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The last one integer is the length of the shared memory.
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memory-region:
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maxItems: 1
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description: |
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Shared memory region to EC. A "shared-dma-pool".
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See ../reserved-memory/reserved-memory.txt for details.
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required:
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- compatible
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- '#sound-dai-cells'
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unevaluatedProperties: false
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examples:
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- |
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reserved_mem: reserved-mem@52800000 {
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compatible = "shared-dma-pool";
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reg = <0x52800000 0x100000>;
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no-map;
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};
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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cros-ec@0 {
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compatible = "google,cros-ec-spi";
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reg = <0>;
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interrupts = <93 0>;
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codecs {
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#address-cells = <2>;
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#size-cells = <1>;
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cros_ec_codec: ec-codec@10500000 {
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compatible = "google,cros-ec-codec";
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#sound-dai-cells = <1>;
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reg = <0x0 0x10500000 0x80000>;
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memory-region = <&reserved_mem>;
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};
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};
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};
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};
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