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ARM: dts: at91-sama5d27_som1_ek: 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/20210914052113.85695-1-durai.manickamkr@microchip.com
This commit is contained in:
Durai Manickam KR 2021-09-14 10:51:13 +05:30 committed by Nicolas Ferre
parent 6b97032b9c
commit 6a1ca035d2
2 changed files with 32 additions and 3 deletions
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12
arch/arm/boot/dts/at91-sama5d27_som1.dtsi
View file

@ -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 @@ ethernet-phy@7 {
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 @@ pinctrl_i2c0_default: i2c0_default {
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>,

23
arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
View file

@ -131,8 +131,11 @@ i2c3: i2c@600 {
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 @@ i2c1: i2c@fc028000 {
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 @@ pinctrl_i2c1_default: i2c1_default {
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 @@ pinctrl_mikrobus_i2c: mikrobus1_i2c {
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>,