diff options
| author | Durai Manickam KR <[email protected]> | 2021-09-21 12:13:44 +0530 |
|---|---|---|
| committer | Nicolas Ferre <[email protected]> | 2021-09-21 11:17:49 +0200 |
| commit | 0d83e4c43a50caf92b07f7daff4d2dc653c8e7ec (patch) | |
| tree | 368d8abe815931bb8cfdc4b70e6eee0d1f7aec80 | |
| parent | dcdbc335a91a26e022a803e1a6b837266989c032 (diff) | |
ARM: dts: at91-sama5d2_icp.dts: Added I2C bus recovery support
SDA and SCL is configured as GPIO for I2C bus to recover during
I2C bus malfunction.
Signed-off-by: Durai Manickam KR <[email protected]>
Signed-off-by: Nicolas Ferre <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
| -rw-r--r-- | arch/arm/boot/dts/at91-sama5d2_icp.dts | 22 |
1 files changed, 20 insertions, 2 deletions
diff --git a/arch/arm/boot/dts/at91-sama5d2_icp.dts b/arch/arm/boot/dts/at91-sama5d2_icp.dts index e06b58724ca8..806eb1d911d7 100644 --- a/arch/arm/boot/dts/at91-sama5d2_icp.dts +++ b/arch/arm/boot/dts/at91-sama5d2_icp.dts @@ -307,8 +307,11 @@ }; &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 @@ &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 @@ 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 @@ 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; |