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ARM: dts: imx6q-utilite-pro: i2c1 is muxed 

It turns out that the i2c1 adapter is connected to a multiplexer
controlled by a gpio line. The first (default) mux option connects
i2c1 to a bus connected to the already known peripherals. The other
one connects the adapter to the ddc pins of the DVI port.

Signed-off-by: Christopher Spinrath <christopher.spinrath@rwth-aachen.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This commit is contained in:
Christopher Spinrath 2016-11-11 16:59:39 +01:00 committed by Shawn Guo
parent c4479f6f57
commit 425dd2773e
1 changed files with 40 additions and 11 deletions
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51
arch/arm/boot/dts/imx6q-utilite-pro.dts
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@ -71,6 +71,40 @@ power {
gpio-key,wakeup;
};
};
i2cmux {
compatible = "i2c-mux-gpio";
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1mux>;
#address-cells = <1>;
#size-cells = <0>;
mux-gpios = <&gpio1 2 GPIO_ACTIVE_HIGH>;
i2c-parent = <&i2c1>;
i2c@0 {
reg = <0>;
#address-cells = <1>;
#size-cells = <0>;
eeprom@50 {
compatible = "at24,24c02";
reg = <0x50>;
pagesize = <16>;
};
em3027: rtc@56 {
compatible = "emmicro,em3027";
reg = <0x56>;
};
};
i2c_dvi_ddc: i2c@1 {
reg = <1>;
#address-cells = <1>;
#size-cells = <0>;
};
};
};
&hdmi {
@ -82,17 +116,6 @@ &i2c1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1>;
status = "okay";
eeprom@50 {
compatible = "at24,24c02";
reg = <0x50>;
pagesize = <16>;
};
em3027: rtc@56 {
compatible = "emmicro,em3027";
reg = <0x56>;
};
};
&i2c2 {
@ -115,6 +138,12 @@ MX6QDL_PAD_EIM_D28__I2C1_SDA 0x4001b8b1
>;
};
pinctrl_i2c1mux: i2c1muxgrp {
fsl,pins = <
MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x1b0b0
>;
};
pinctrl_i2c2: i2c2grp {
fsl,pins = <
MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1