diff options
| author |   Lothar Waßmann <LW@KARO-electronics.de> | 2017-10-11 13:07:40 +0200 |
|---|---|---|
| committer |   Shawn Guo <shawnguo@kernel.org> | 2017-10-23 08:19:35 +0800 |
| commit | ef4eec2bc3119863e9f7a8832499d1fcd9c420e0 (patch) | |
| tree | c2fde73cead57456ca56bee9bfc58bb64b60e165 /arch/arm/boot/dts/imx53-tx53.dtsi | |
| parent | ARM: dts: imx53-tx53: use explicit pad_ctl settings for I2C pins (diff) | |
| download | linux-dev-ef4eec2bc3119863e9f7a8832499d1fcd9c420e0.tar.xz linux-dev-ef4eec2bc3119863e9f7a8832499d1fcd9c420e0.zip | |
ARM: dts: imx53-tx53: add support for I2C bus recovery
The imx-i2c driver supports automatic bus recovery via the GPIO
function of the I2C pins. Enable this functionality for the Ka-Ro
electronics TX53 modules.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'arch/arm/boot/dts/imx53-tx53.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/imx53-tx53.dtsi | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/imx53-tx53.dtsi b/arch/arm/boot/dts/imx53-tx53.dtsi index 33934e53d518..8e10c4757770 100644 --- a/arch/arm/boot/dts/imx53-tx53.dtsi +++ b/arch/arm/boot/dts/imx53-tx53.dtsi @@ -233,8 +233,11 @@ }; &i2c1 { - pinctrl-names = "default"; + pinctrl-names = "default", "gpio"; pinctrl-0 = <&pinctrl_i2c1>; + pinctrl-0 = <&pinctrl_i2c1_gpio>; + scl-gpios = <&gpio3 21 GPIO_ACTIVE_HIGH>; + sda-gpios = <&gpio3 28 GPIO_ACTIVE_HIGH>; clock-frequency = <400000>; status = "okay"; @@ -394,6 +397,13 @@ >; }; + pinctrl_i2c1_gpio: i2c1-gpiogrp { + fsl,pins = < + MX53_PAD_EIM_D21__GPIO3_21 0x400001e6 + MX53_PAD_EIM_D28__GPIO3_28 0x400001e6 + >; + }; + pinctrl_i2c3: i2c3grp { fsl,pins = < MX53_PAD_GPIO_3__I2C3_SCL 0x400001e4 @@ -401,6 +411,13 @@ >; }; + pinctrl_i2c3_gpio: i2c3-gpiogrp { + fsl,pins = < + MX53_PAD_GPIO_3__GPIO1_3 0x400001e6 + MX53_PAD_GPIO_6__GPIO1_6 0x400001e6 + >; + }; + pinctrl_nand: nandgrp { fsl,pins = < MX53_PAD_NANDF_WE_B__EMI_NANDF_WE_B 0x4 |