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ARM: dts: at91-sama5d2_icp.dts: Added I2C bus recovery support

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SDA and SCL is configured as GPIO for I2C bus to recover during
I2C bus malfunction.

Signed-off-by: Durai Manickam KR <durai.manickamkr@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20210921064344.889304-1-durai.manickamkr@microchip.com
This commit is contained in:
Durai Manickam KR
2021-09-21 12:13:44 +05:30
committed by Nicolas Ferre
parent dcdbc335a9
commit 0d83e4c43a
1 changed files with 20 additions and 2 deletions
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22
arch/arm/boot/dts/at91-sama5d2_icp.dts
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@@ -307,8 +307,11 @@ regulator-state-mem {
};
&i2c0 { /* mikrobus i2c */
pinctrl-names = "default";
pinctrl-names = "default", "gpio";
pinctrl-0 = <&pinctrl_mikrobus_i2c>;
pinctrl-1 = <&pinctrl_i2c0_gpio>;
sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>;
scl-gpios = <&pioA PIN_PD22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
i2c-digital-filter;
i2c-digital-filter-width-ns = <35>;
status = "okay";
@@ -316,8 +319,11 @@ &i2c0 { /* mikrobus i2c */
&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)>;
i2c-digital-filter;
i2c-digital-filter-width-ns = <35>;
status = "okay";
@@ -402,6 +408,12 @@ pinctrl_i2c1_default: i2c1_default {
bias-disable;
};
pinctrl_i2c1_gpio: i2c1_gpio {
pinmux = <PIN_PD19__GPIO>,
<PIN_PD20__GPIO>;
bias-disable;
};
pinctrl_key_gpio_default: key_gpio_default {
pinmux = <PIN_PD0__GPIO>;
bias-pull-up;
@@ -463,6 +475,12 @@ pinctrl_mikrobus_i2c: mikrobus_i2c {
bias-disable;
};
pinctrl_i2c0_gpio: i2c0_gpio {
pinmux = <PIN_PD21__GPIO>,
<PIN_PD22__GPIO>;
bias-disable;
};
pinctrl_mikrobus1_an: mikrobus1_an {
pinmux = <PIN_PD26__GPIO>;
bias-disable;