diff options
| author | Christopher Spinrath <christopher.spinrath@rwth-aachen.de> | 2016-11-11 18:59:39 +0300 |
|---|---|---|
| committer | Shawn Guo <shawnguo@kernel.org> | 2016-11-14 10:33:13 +0300 |
| commit | 425dd2773ed07d1ba21d4ada0f9a9abc85b75151 (patch) | |
| tree | 9cf30b3a44da6bdfbcebdbea38598bd81cb43542 /arch | |
| parent | c4479f6f57a0821aae4f6ab6a91a23625d6b35a0 (diff) | |
| download | linux-425dd2773ed07d1ba21d4ada0f9a9abc85b75151.tar.xz | |
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>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/arm/boot/dts/imx6q-utilite-pro.dts | 51 |
1 files changed, 40 insertions, 11 deletions
diff --git a/arch/arm/boot/dts/imx6q-utilite-pro.dts b/arch/arm/boot/dts/imx6q-utilite-pro.dts index 61990630a748..246979a388a4 100644 --- a/arch/arm/boot/dts/imx6q-utilite-pro.dts +++ b/arch/arm/boot/dts/imx6q-utilite-pro.dts @@ -71,6 +71,40 @@ 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 @@ 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 @@ >; }; + pinctrl_i2c1mux: i2c1muxgrp { + fsl,pins = < + MX6QDL_PAD_GPIO_2__GPIO1_IO02 0x1b0b0 + >; + }; + pinctrl_i2c2: i2c2grp { fsl,pins = < MX6QDL_PAD_KEY_COL3__I2C2_SCL 0x4001b8b1 |