diff options
| author | Harald Geyer <harald@ccbib.org> | 2015-04-17 16:43:24 +0200 |
|---|---|---|
| committer | Shawn Guo <shawn.guo@linaro.org> | 2015-06-03 09:03:56 +0200 |
| commit | 71a34d829c81bbf2966128e5b9274d8dea38b0ab (patch) | |
| tree | c129c7e7ecac5e5fdc08dff91c9d70107715215f /arch/arm/boot/dts/imx23.dtsi | |
| parent | ARM: dts: hummingboard: Remove unneeded 'fsl,mode' property (diff) | |
| download | linux-71a34d829c81bbf2966128e5b9274d8dea38b0ab.tar.xz linux-71a34d829c81bbf2966128e5b9274d8dea38b0ab.zip | |
ARM: dts: imx23: Add i2c support
The imx23-olinuxino board has an i2c interface exposed on UEXT connector.
This patch provides the generic devicetree infrastructure for a follow-up
patch to add support to the actual board files.
Tested all three possible pin groups with MOD-LCD1x9 from Olimex.
This patch is based on work by Fadil Berisha with his permission. However
all bugs are mine.
Signed-off-by: Harald Geyer <harald@ccbib.org>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Diffstat (limited to 'arch/arm/boot/dts/imx23.dtsi')
| -rw-r--r-- | arch/arm/boot/dts/imx23.dtsi | 40 |
1 files changed, 39 insertions, 1 deletions
diff --git a/arch/arm/boot/dts/imx23.dtsi b/arch/arm/boot/dts/imx23.dtsi index bbcfb5a19c77..c892d58e8dad 100644 --- a/arch/arm/boot/dts/imx23.dtsi +++ b/arch/arm/boot/dts/imx23.dtsi @@ -308,6 +308,39 @@ fsl,voltage = <MXS_VOLTAGE_HIGH>; fsl,pull-up = <MXS_PULL_ENABLE>; }; + + i2c_pins_a: i2c@0 { + reg = <0>; + fsl,pinmux-ids = < + MX23_PAD_I2C_SCL__I2C_SCL + MX23_PAD_I2C_SDA__I2C_SDA + >; + fsl,drive-strength = <MXS_DRIVE_8mA>; + fsl,voltage = <MXS_VOLTAGE_HIGH>; + fsl,pull-up = <MXS_PULL_ENABLE>; + }; + + i2c_pins_b: i2c@1 { + reg = <1>; + fsl,pinmux-ids = < + MX23_PAD_LCD_ENABLE__I2C_SCL + MX23_PAD_LCD_HSYNC__I2C_SDA + >; + fsl,drive-strength = <MXS_DRIVE_8mA>; + fsl,voltage = <MXS_VOLTAGE_HIGH>; + fsl,pull-up = <MXS_PULL_ENABLE>; + }; + + i2c_pins_c: i2c@2 { + reg = <2>; + fsl,pinmux-ids = < + MX23_PAD_SSP1_DATA1__I2C_SCL + MX23_PAD_SSP1_DATA2__I2C_SDA + >; + fsl,drive-strength = <MXS_DRIVE_8mA>; + fsl,voltage = <MXS_VOLTAGE_HIGH>; + fsl,pull-up = <MXS_PULL_ENABLE>; + }; }; digctl@8001c000 { @@ -444,8 +477,13 @@ status = "disabled"; }; - i2c@80058000 { + i2c: i2c@80058000 { + #address-cells = <1>; + #size-cells = <0>; + compatible = "fsl,imx23-i2c"; reg = <0x80058000 0x2000>; + interrupts = <27>; + clock-frequency = <100000>; dmas = <&dma_apbx 3>; dma-names = "rx-tx"; status = "disabled"; |