Re: [PATCH v6 3/3] ARM: dts: at91: sama5d2 Xplained: add pin muxing for I2S

Claudiu Beznea
2018-07-30T13:50:02Z

Hi Codrin,

On 30.07.2018 14:40, Codrin Ciubotariu wrote:
> From: Cyrille Pitchen <cyrille.pitchen@atmel.com>
>
> This patch sets the pin muxing for the I2S controllers
>
> Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
> [codrin.ciubotariu@microchip.com: added pin muxing for the second
> controller]
> Signed-off-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
> ---
>
> Changes in v6:
> - none;
>
> arch/arm/boot/dts/at91-sama5d2_xplained.dts | 28 +++++++++++++++++++++
> 1 file changed, 28 insertions(+)
>
> diff --git a/arch/arm/boot/dts/at91-sama5d2_xplained.dts b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> index fcc85d70f36e..95cbec0f8790 100644
> --- a/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> +++ b/arch/arm/boot/dts/at91-sama5d2_xplained.dts
> @@ -281,6 +281,11 @@
> status = "okay";
> };
>
> + i2s0: i2s@f8050000 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2s0_default>;

The approach with the disabled controllers in board DTS files (for our
boards) is to use the: status = "disabled" and if there are pin conflicts
with other controllers to put a mark in there, something like:
status = "disabled"; /* Conflict with X */

I'm seeing that i2s1 is in conflict with sdmmc1 and spi0.

Thank you,
Claudiu Beznea

> + };
> +
> can0: can@f8054000 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_can0_default>;
> @@ -424,6 +429,24 @@
> bias-disable;
> };
>
> + pinctrl_i2s0_default: i2s0_default {
> + pinmux = <PIN_PC1__I2SC0_CK>,
> + <PIN_PC2__I2SC0_MCK>,
> + <PIN_PC3__I2SC0_WS>,
> + <PIN_PC4__I2SC0_DI0>,
> + <PIN_PC5__I2SC0_DO0>;
> + bias-disable;
> + };
> +
> + pinctrl_i2s1_default: i2s1_default {
> + pinmux = <PIN_PA15__I2SC1_CK>,
> + <PIN_PA14__I2SC1_MCK>,
> + <PIN_PA16__I2SC1_WS>,
> + <PIN_PA17__I2SC1_DI0>,
> + <PIN_PA18__I2SC1_DO0>;
> + bias-disable;
> + };
> +
> pinctrl_key_gpio_default: key_gpio_default {
> pinmux = <PIN_PB9__GPIO>;
> bias-pull-up;
> @@ -546,6 +569,11 @@
> status = "okay";
> };
>
> + i2s1: i2s@fc04c000 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&pinctrl_i2s1_default>;
> + };
> +
> can1: can@fc050000 {
> pinctrl-names = "default";
> pinctrl-0 = <&pinctrl_can1_default>;
>