Commit 71a34d82 authored by Harald Geyer's avatar Harald Geyer Committed by Shawn Guo

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: default avatarHarald Geyer <harald@ccbib.org>
Acked-by: default avatarStefan Wahren <stefan.wahren@i2se.com>
Acked-by: default avatarMarek Vasut <marex@denx.de>
Signed-off-by: default avatarShawn Guo <shawn.guo@linaro.org>
parent 5ce66798
...@@ -308,6 +308,39 @@ MX23_PAD_GPMI_D03__SSP2_DATA3 ...@@ -308,6 +308,39 @@ MX23_PAD_GPMI_D03__SSP2_DATA3
fsl,voltage = <MXS_VOLTAGE_HIGH>; fsl,voltage = <MXS_VOLTAGE_HIGH>;
fsl,pull-up = <MXS_PULL_ENABLE>; 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 { digctl@8001c000 {
...@@ -444,8 +477,13 @@ spdif@80054000 { ...@@ -444,8 +477,13 @@ spdif@80054000 {
status = "disabled"; status = "disabled";
}; };
i2c@80058000 { i2c: i2c@80058000 {
#address-cells = <1>;
#size-cells = <0>;
compatible = "fsl,imx23-i2c";
reg = <0x80058000 0x2000>; reg = <0x80058000 0x2000>;
interrupts = <27>;
clock-frequency = <100000>;
dmas = <&dma_apbx 3>; dmas = <&dma_apbx 3>;
dma-names = "rx-tx"; dma-names = "rx-tx";
status = "disabled"; status = "disabled";
......
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