From 43577ecfcaa28bb21bd19739c35d96c444bdf1a8 Mon Sep 17 00:00:00 2001 From: Ilya Ledvich Date: Tue, 24 Nov 2015 16:02:09 +0200 Subject: [PATCH] ARM: dts: cm-t335: add basic support for I2C Add pinmux configuration for I2C0 and I2C1 pins. Add description for I2C0 bus, set clock frequency to 400kHz. Add child nodes for 24c02 EEPROM and em3027 RTC on I2C0 bus. Signed-off-by: Ilya Ledvich Signed-off-by: Uri Mashiach Acked-by: Igor Grinberg Signed-off-by: Tony Lindgren --- arch/arm/boot/dts/am335x-cm-t335.dts | 37 ++++++++++++++++++++++++++++ 1 file changed, 37 insertions(+) diff --git a/arch/arm/boot/dts/am335x-cm-t335.dts b/arch/arm/boot/dts/am335x-cm-t335.dts index e18859ec2a7d..9fc2f011ea47 100644 --- a/arch/arm/boot/dts/am335x-cm-t335.dts +++ b/arch/arm/boot/dts/am335x-cm-t335.dts @@ -37,6 +37,24 @@ pinctrl-names = "default"; pinctrl-0 = <>; + i2c0_pins: pinmux_i2c0_pins { + pinctrl-single,pins = < + /* i2c0_sda.i2c0_sda */ + AM33XX_IOPAD(0x988, PIN_INPUT_PULLUP | MUX_MODE0) + /* i2c0_scl.i2c0_scl */ + AM33XX_IOPAD(0x98c, PIN_INPUT_PULLUP | MUX_MODE0) + >; + }; + + i2c1_pins: pinmux_i2c1_pins { + pinctrl-single,pins = < + /* uart0_ctsn.i2c1_sda */ + AM33XX_IOPAD(0x968, PIN_INPUT_PULLUP | MUX_MODE2) + /* uart0_rtsn.i2c1_scl */ + AM33XX_IOPAD(0x96c, PIN_INPUT_PULLUP | MUX_MODE2) + >; + }; + gpio_led_pins: pinmux_gpio_led_pins { pinctrl-single,pins = < /* gpmc_csn3.gpio2_0 */ @@ -60,3 +78,22 @@ status = "okay"; }; + +&i2c0 { + pinctrl-names = "default"; + pinctrl-0 = <&i2c0_pins>; + + status = "okay"; + clock-frequency = <400000>; + /* CM-T335 board EEPROM */ + eeprom: 24c02@50 { + compatible = "atmel,24c02"; + reg = <0x50>; + pagesize = <16>; + }; + /* Real Time Clock */ + ext_rtc: em3027@56 { + compatible = "emmicro,em3027"; + reg = <0x56>; + }; +}; -- GitLab