linux/arch/arm/boot/dts/bcm2835-rpi-b.dts
Stephen Warren 232fed4825 ARM: bcm2835: add I2C controllers to DT
The BCM2835 has 3 identical I2C controllers. Instantiate them all in the
SoC .dtsi file, and enable the relevant two in the Raspberry Pi board
.dts file.

Note that on the Raspberry Pi Model B revision 1, I2C0 is connected to
the general-purpose expansion header, and I2C1 is connected to the camera
connector. Revision 2 of the board swaps these assignments:-(

Signed-off-by: Stephen Warren <swarren@wwwdotorg.org>
2013-01-14 21:47:09 -07:00

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/dts-v1/;
/include/ "bcm2835.dtsi"
/ {
compatible = "raspberrypi,model-b", "brcm,bcm2835";
model = "Raspberry Pi Model B";
memory {
reg = <0 0x10000000>;
};
};
&gpio {
pinctrl-names = "default";
pinctrl-0 = <&alt0 &alt3>;
alt0: alt0 {
brcm,pins = <0 1 2 3 4 5 6 7 8 9 10 11 14 15 40 45>;
brcm,function = <4>; /* alt0 */
};
alt3: alt3 {
brcm,pins = <48 49 50 51 52 53>;
brcm,function = <7>; /* alt3 */
};
};
&i2c0 {
status = "okay";
clock-frequency = <100000>;
};
&i2c1 {
status = "okay";
clock-frequency = <100000>;
};
&sdhci {
status = "okay";
bus-width = <4>;
};