* Rockchip RK3308 Internal Codec
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Required properties:
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- compatible: "rockchip,rk3308-codec"
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- reg: The physical base address of the controller and length of memory
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mapped 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
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clock-names.
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- clock-names: It should be "acodec".
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- resets : Must contain an entry for each entry in reset-names.
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- reset-names : Must include the following entries: "acodec-reset".
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Optional properties:
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- rockchip,enable-all-adcs: This is a boolean type property, that shows whether
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force enable all of ADCs. The following shows the relationship between grps
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and ADC:
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* grp 0 -- select ADC1 / ADC2
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* grp 1 -- select ADC3 / ADC4
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* grp 2 -- select ADC5 / ADC6
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* grp 3 -- select ADC7 / ADC8
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If the property is not used, the enabled ADC groups refer to needed channels
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via configure hw_params.
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- rockchip,adc-grps-route: This is a variable length array, that shows the
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mapping route of ACODEC sdo to I2S sdi. By default, they are one-to-one
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mapping:
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* sdi_0 <-- sdo_0
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* sdi_1 <-- sdo_1
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* sdi_2 <-- sdo_2
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* sdi_3 <-- sdo_3
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If you would like to change the route mapping like this:
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* sdi_0 <-- sdo_3
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* sdi_1 <-- sdo_0
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* sdi_2 <-- sdo_2
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* sdi_3 <-- sdo_1
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You need to add the property on dts:
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- rockchip,adc-grps-route = <3 0 2 1>;
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- rockchip,delay-loopback-handle-ms: This property points out that the delay for
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handling ADC after enable PAs during loopback.
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- rockchip,delay-start-play-ms: This property points out the delay ms of start
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playback according to different amplifier performance.
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- rockchip,en-always-grps: This property will keep the needed ADCs enabled
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always after enabling once.
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- rockchip,loopback-grp: It points out the ADC group which is the loopback used.
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- rockchip,no-deep-low-power: The codec will not enter deep low power mode
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during suspend.
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- rockchip,no-hp-det: If there is no headphone on boards, we don't need to
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enable headphone detection.
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- rockchip,micbias1: Using internal micbias1 supply which are from codec.
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- rockchip,micbias2: Using internal micbias2 supply which are from codec.
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- hp-ctl-gpios: The gpio of head phone controller.
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- pa-drv-gpios: The gpio of poweramplifier controller
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- rockchip,delay-pa-drv-ms: This property points out that the delay for
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power on amplifier
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- spk-ctl-gpios: The gpio of speak controller.
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Example for rk3308 internal codec:
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acodec: acodec@ff560000 {
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compatible = "rockchip,rk3308-codec";
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reg = <0x0 0xff560000 0x0 0x10000>;
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rockchip,grf = <&grf>;
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clocks = <&cru PCLK_ACODEC>;
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clock-names = "acodec";
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resets = <&cru SRST_ACODEC_P>;
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reset-names = "acodec-reset";
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rockchip,loopback-grp = <0>;
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hp-ctl-gpios = <&gpio0 1 GPIO_ACTIVE_HIGH>;
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pa-drv-gpios = <&gpio0 RK_PC0 GPIO_ACTIVE_HIGH>;
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spk-ctl-gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
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status = "okay";
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};
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