On Wed, Sep 18, 2019 at 12:46:34PM +0200, Sylwester Nawrocki wrote:
> Add sound node and the clock configurations for the I2S controller
> for audio support on the Exynos5250 SoC Arndale boards with
> WM1811 based audio daugther board.
>
> We need to increase drive strength of the I2S bus, otherwise
> the audio CODEC doesn't work. Likely the CODEC's master clock
> is the main issue here.
>
> Signed-off-by: Sylwester Nawrocki <s.nawrocki@xxxxxxxxxxx>
> ---
> arch/arm/boot/dts/exynos5250-arndale.dts | 27 +++++++++++++++++++++++-
> 1 file changed, 26 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm/boot/dts/exynos5250-arndale.dts b/arch/arm/boot/dts/exynos5250-arndale.dts
> index dc6fa6fe83f1..62aa6720aa88 100644
> --- a/arch/arm/boot/dts/exynos5250-arndale.dts
> +++ b/arch/arm/boot/dts/exynos5250-arndale.dts
> @@ -11,6 +11,7 @@
> #include <dt-bindings/interrupt-controller/irq.h>
> #include <dt-bindings/input/input.h>
> #include <dt-bindings/clock/samsung,s2mps11.h>
> +#include <dt-bindings/sound/samsung-i2s.h>
> #include "exynos5250.dtsi"
>
> / {
> @@ -135,6 +136,12 @@
> };
> };
>
> + sound {
> + compatible = "samsung,arndale-wm1811";
> + samsung,audio-cpu = <&i2s0>;
> + samsung,audio-codec = <&wm1811>;
> + };
> +
> fixed-rate-clocks {
> xxti {
> compatible = "samsung,clock-xxti";
> @@ -499,12 +506,24 @@
> };
> };
>
> +&clock {
> + assigned-clocks = <&clock CLK_FOUT_EPLL>;
> + assigned-clock-rates = <49152000>;
> +};
> +
> +&clock_audss {
> + assigned-clocks = <&clock_audss EXYNOS_MOUT_AUDSS>;
> + assigned-clock-parents = <&clock CLK_FOUT_EPLL>;
> +};
Put them before "cpu" so alphabetical order is preserved.
Best regards,
Krzysztof
> +
> &i2c_3 {
> status = "okay";
>
> - wm1811a@1a {
> + wm1811: codec@1a {
> compatible = "wlf,wm1811";
> reg = <0x1a>;
> + clocks = <&i2s0 CLK_I2S_CDCLK>;
> + clock-names = "MCLK1";
>
> AVDD2-supply = <&main_dc_reg>;
> CPVDD-supply = <&main_dc_reg>;
> @@ -540,9 +559,15 @@
> };
>
> &i2s0 {
> + assigned-clocks = <&i2s0 CLK_I2S_RCLK_SRC>;
> + assigned-clock-parents = <&clock_audss EXYNOS_I2S_BUS>;
> status = "okay";
> };
>
> +&i2s0_bus {
> + samsung,pin-drv = <EXYNOS4_PIN_DRV_LV2>;
> +};
> +
> &mixer {
> status = "okay";
> };
> --
> 2.17.1
>
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