From: Ilya Ledvich <ilya@xxxxxxxxxxxxxx>
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 <ilya@xxxxxxxxxxxxxx>
Signed-off-by: Uri Mashiach <uri.mashiach@xxxxxxxxxxxxxx>
Acked-by: Igor Grinberg <grinberg@xxxxxxxxxxxxxx>
---
v1 -> v2: integrate AM33XX_IOPAD macro in pinmux definitions
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 719658e..02b6679 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 */
@@ -61,3 +79,22 @@
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>;
+ };
+};
+
--
2.5.0
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