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e149809765
Existing RK3328 codec drivers have overloaded the GRF phandle to assume implicit control of the limited-function GPIO_MUTE pin, which is usually used to enable an external audio line driver IC. Since this pin has a proper binding of its own (see gpio/rockchip,rk3328-grf-gpio.txt), make a GPIO explicit in the codec binding too. This will help avoid ambiguity on boards that use that pin for some other purpose. (and while touching the example, enforce the "don't include status" rule) Signed-off-by: Robin Murphy <robin.murphy@arm.com> Link: https://lore.kernel.org/r/5f7a399dea8a9dedef57f6f99f0f6ab1c1fdc56a.1581376744.git.robin.murphy@arm.com Signed-off-by: Mark Brown <broonie@kernel.org>
29 lines
834 B
Plaintext
29 lines
834 B
Plaintext
* Rockchip Rk3328 internal codec
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Required properties:
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- compatible: "rockchip,rk3328-codec"
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- reg: physical base address of the controller and length of memory mapped
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region.
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- rockchip,grf: the phandle of the syscon node for GRF register.
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- clocks: a list of phandle + clock-specifer pairs, one for each entry in clock-names.
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- clock-names: should be "pclk".
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- spk-depop-time-ms: speak depop time msec.
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Optional properties:
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- mute-gpios: GPIO specifier for external line driver control (typically the
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dedicated GPIO_MUTE pin)
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Example for rk3328 internal codec:
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codec: codec@ff410000 {
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compatible = "rockchip,rk3328-codec";
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reg = <0x0 0xff410000 0x0 0x1000>;
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rockchip,grf = <&grf>;
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clocks = <&cru PCLK_ACODEC>;
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clock-names = "pclk";
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mute-gpios = <&grf_gpio 0 GPIO_ACTIVE_LOW>;
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spk-depop-time-ms = 100;
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};
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