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SubjectRe: [PATCH v2 2/2] ARM: dts: meson8b: ec100: wire up the RT5640 audio codec
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On 18/07/2021 01:30, Martin Blumenstingl wrote:
> The Realtek RT5640 codec is connected to the SoC's I2S interface.
> Describe this in the .dts together with the codec's LDO1 enable GPIO so
> audio can be played on the Endless Mini.
> While here, add a note about the realtek,ldo1-en-gpios for which the
> EC100 uses GPIO_BSD_EN. Due to driver limitations this pin cannot be
> used currently.
>
> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
> ---
> arch/arm/boot/dts/meson8b-ec100.dts | 44 +++++++++++++++++++++++++++++
> 1 file changed, 44 insertions(+)
>
> diff --git a/arch/arm/boot/dts/meson8b-ec100.dts b/arch/arm/boot/dts/meson8b-ec100.dts
> index 8e48ccc6b634..e404bdccdab9 100644
> --- a/arch/arm/boot/dts/meson8b-ec100.dts
> +++ b/arch/arm/boot/dts/meson8b-ec100.dts
> @@ -96,6 +96,32 @@ rtc32k_xtal: rtc32k-xtal-clk {
> #clock-cells = <0>;
> };
>
> + sound {
> + compatible = "amlogic,gx-sound-card";
> + model = "M8B-EC100";
> +
> + assigned-clocks = <&clkc CLKID_MPLL0>,
> + <&clkc CLKID_MPLL1>,
> + <&clkc CLKID_MPLL2>;
> + assigned-clock-rates = <270950400>,
> + <294912000>,
> + <393216000>;
> +
> + dai-link-0 {
> + sound-dai = <&aiu AIU_CPU CPU_I2S_FIFO>;
> + };
> +
> + dai-link-1 {
> + sound-dai = <&aiu AIU_CPU CPU_I2S_ENCODER>;
> + dai-format = "i2s";
> + mclk-fs = <256>;
> +
> + codec-0 {
> + sound-dai = <&rt5640>;
> + };
> + };
> + };
> +
> usb_vbus: regulator-usb-vbus {
> /*
> * Silergy SY6288CCAC-GP 2A Power Distribution Switch.
> @@ -242,6 +268,14 @@ vddee: regulator-vddee {
> };
> };
>
> +&aiu {
> + status = "okay";
> +
> + pinctrl-0 = <&i2s_am_clk_pins>, <&i2s_out_ao_clk_pins>,
> + <&i2s_out_lr_clk_pins>, <&i2s_out_ch01_ao_pins>;
> + pinctrl-names = "default";
> +};
> +
> &cpu0 {
> cpu-supply = <&vcck>;
> };
> @@ -283,9 +317,19 @@ &i2c_A {
>
> rt5640: codec@1c {
> compatible = "realtek,rt5640";
> +
> reg = <0x1c>;
> +
> + #sound-dai-cells = <0>;
> +
> interrupt-parent = <&gpio_intc>;
> interrupts = <13 IRQ_TYPE_EDGE_BOTH>; /* GPIOAO_13 */
> +
> + /*
> + * TODO: realtek,ldo1-en-gpios is connected to GPIO_BSD_EN.
> + * We currently cannot configure this pin correctly.
> + * Luckily for us it's in the "right" state by default.
> + */
> realtek,in1-differential;
> };
> };
>

Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>

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