diff options
| author |   Durai Manickam KR <durai.manickamkr@microchip.com> | 2021-09-14 10:51:13 +0530 |
|---|---|---|
| committer |   Nicolas Ferre <nicolas.ferre@microchip.com> | 2021-09-15 11:01:06 +0200 |
| commit | 6a1ca035d2074812f9429d4ea5c2d523597c5bc1 (patch) | |
| tree | b908dda81fd60d409924caed06533802a841330b | |
| parent | ARM: dts: at91: sama7g5ek: enable ADC on the board (diff) | |
| download | linux-dev-6a1ca035d2074812f9429d4ea5c2d523597c5bc1.tar.xz linux-dev-6a1ca035d2074812f9429d4ea5c2d523597c5bc1.zip | |
ARM: dts: at91-sama5d27_som1_ek: 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 <durai.manickamkr@microchip.com>
Signed-off-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Link: https://lore.kernel.org/r/20210914052113.85695-1-durai.manickamkr@microchip.com
| -rw-r--r-- | arch/arm/boot/dts/at91-sama5d27_som1.dtsi | 12 | ||||
| -rw-r--r-- | arch/arm/boot/dts/at91-sama5d27_som1_ek.dts | 23 |
2 files changed, 32 insertions, 3 deletions
diff --git a/arch/arm/boot/dts/at91-sama5d27_som1.dtsi b/arch/arm/boot/dts/at91-sama5d27_som1.dtsi index b48ac3b62a31..a4623cc67cc1 100644 --- a/arch/arm/boot/dts/at91-sama5d27_som1.dtsi +++ b/arch/arm/boot/dts/at91-sama5d27_som1.dtsi @@ -8,6 +8,7 @@ */ #include "sama5d2.dtsi" #include "sama5d2-pinfunc.h" +#include <dt-bindings/gpio/gpio.h> / { model = "Atmel SAMA5D27 SoM1"; @@ -95,8 +96,11 @@ i2c0: i2c@f8028000 { dmas = <0>, <0>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c0_default>; + pinctrl-1 = <&pinctrl_i2c0_gpio>; + sda-gpios = <&pioA PIN_PD21 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA PIN_PD22 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; at24@50 { @@ -113,6 +117,12 @@ bias-disable; }; + pinctrl_i2c0_gpio: i2c0_gpio { + pinmux = <PIN_PD21__GPIO>, + <PIN_PD22__GPIO>; + bias-disable; + }; + pinctrl_qspi1_default: qspi1_default { sck_cs { pinmux = <PIN_PB5__QSPI1_SCK>, diff --git a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts index 614999dcb990..0f10e05d6e23 100644 --- a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts +++ b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts @@ -131,8 +131,11 @@ i2c-analog-filter; i2c-digital-filter; i2c-digital-filter-width-ns = <35>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_mikrobus_i2c>; + pinctrl-1 = <&pinctrl_i2c3_gpio>; + sda-gpios = <&pioA PIN_PA24 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA PIN_PA23 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; }; }; @@ -216,8 +219,11 @@ i2c-analog-filter; i2c-digital-filter; i2c-digital-filter-width-ns = <35>; - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1_default>; + pinctrl-1 = <&pinctrl_i2c1_gpio>; + sda-gpios = <&pioA PIN_PD4 GPIO_ACTIVE_HIGH>; + scl-gpios = <&pioA PIN_PD5 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>; status = "okay"; }; @@ -253,6 +259,13 @@ bias-disable; }; + pinctrl_i2c1_gpio: i2c1_gpio { + pinmux = <PIN_PD4__GPIO>, + <PIN_PD5__GPIO>; + bias-disable; + }; + + pinctrl_isc_base: isc_base { pinmux = <PIN_PC21__ISC_PCK>, <PIN_PC22__ISC_VSYNC>, @@ -442,6 +455,12 @@ bias-disable; }; + pinctrl_i2c3_gpio: i2c3_gpio { + pinmux = <PIN_PA24__GPIO>, + <PIN_PA23__GPIO>; + bias-disable; + }; + pinctrl_flx4_default: flx4_uart_default { pinmux = <PIN_PC28__FLEXCOM4_IO0>, <PIN_PC29__FLEXCOM4_IO1>, |