Thread (2 messages) flat view 2 messages, 1 author, 2021-01-21

Re: [PATCH] ARM: dts: at91-sama5d27_wlsom1: add i2c recovery

From: Nicolas Ferre <nicolas.ferre@microchip.com>
Date: 2021-01-21 14:35:31
Also in: linux-devicetree, lkml

On 17/01/2021 at 19:35, nicolas.ferre@microchip.com wrote:
From: Nicolas Ferre <nicolas.ferre@microchip.com>

Add the i2c gpio pinctrls to support the i2c bus recovery on this board.

Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Reviewed-by: Codrin Ciubotariu <codrin.ciubotariu@microchip.com>
added to at91-dt.

Regards,
   Nicolas
quoted hunk ↗ jump to hunk
---
  arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi | 22 +++++++++++++++++++--
  1 file changed, 20 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi b/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi
index a06700e53e4c..025a78310e3a 100644
--- a/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi
+++ b/arch/arm/boot/dts/at91-sama5d27_wlsom1.dtsi
@@ -43,14 +43,20 @@ uart6: serial@200 {
  
  &i2c0 {
  	pinctrl-0 = <&pinctrl_i2c0_default>;
-	pinctrl-names = "default";
+	pinctrl-1 = <&pinctrl_i2c0_gpio>;
+	pinctrl-names = "default", "gpio";
+	sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>;
+	scl-gpios = <&pioA PIN_PD22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
  	status = "okay";
  };
  
  &i2c1 {
  	dmas = <0>, <0>;
-	pinctrl-names = "default";
+	pinctrl-names = "default", "gpio";
  	pinctrl-0 = <&pinctrl_i2c1_default>;
+	pinctrl-1 = <&pinctrl_i2c1_gpio>;
+	sda-gpios = <&pioA PIN_PD19 GPIO_ACTIVE_HIGH>;
+	scl-gpios = <&pioA PIN_PD20 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
  	status = "okay";
  
  	mcp16502@5b {
@@ -258,12 +264,24 @@ pinctrl_i2c0_default: i2c0_default {
  		bias-disable;
  	};
  
+	pinctrl_i2c0_gpio: i2c0_gpio {
+		pinmux = <PIN_PD21__GPIO>,
+			 <PIN_PD22__GPIO>;
+		bias-disable;
+	};
+
  	pinctrl_i2c1_default: i2c1_default {
  		pinmux = <PIN_PD19__TWD1>,
  			 <PIN_PD20__TWCK1>;
  		bias-disable;
  	};
  
+	pinctrl_i2c1_gpio: i2c1_gpio {
+		pinmux = <PIN_PD19__GPIO>,
+			 <PIN_PD20__GPIO>;
+		bias-disable;
+	};
+
  	pinctrl_macb0_default: macb0_default {
  		pinmux = <PIN_PB14__GTXCK>,
  			 <PIN_PB15__GTXEN>,

-- 
Nicolas Ferre

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