* Matt Ranostay <mranos...@gmail.com> [140509 18:43]:
> Add missing i2c2 bus define to access various cape and
> prototype/breakout board devices.
>
> Signed-off-by: Matt Ranostay <mranos...@gmail.com>
> ---
> arch/arm/boot/dts/am335x-bone-common.dtsi | 16 ++++++++++++++++
> 1 file changed, 16 insertions(+)
>
> diff --git a/arch/arm/boot/dts/am335x-bone-common.dtsi
> b/arch/arm/boot/dts/am335x-bone-common.dtsi
> index 2e7d932..5fdae2e 100644
> --- a/arch/arm/boot/dts/am335x-bone-common.dtsi
> +++ b/arch/arm/boot/dts/am335x-bone-common.dtsi
> @@ -84,6 +84,13 @@
> >;
> };
>
> + i2c2_pins: pinmux_i2c2_pins {
> + pinctrl-single,pins = <
> + 0x178 (PIN_INPUT_PULLUP | MUX_MODE3) /*
> uart1_ctsn.i2c2_sda */
> + 0x17c (PIN_INPUT_PULLUP | MUX_MODE3) /*
> uart1_rtsn.i2c2_scl */
> + >;
> + };
> +
> uart0_pins: pinmux_uart0_pins {
> pinctrl-single,pins = <
> 0x170 (PIN_INPUT_PULLUP | MUX_MODE0) /*
> uart0_rxd.uart0_rxd */
>
> @@ -222,6 +229,15 @@
>
> };
>
> +
> +&i2c2 {
> + pinctrl-names = "default";
> + pinctrl-0 = <&i2c2_pins>;
> +
> + status = "okay";
> + clock-frequency = <100000>;
> +};
> +
If these pins are not used for i2c2 on some capes, this device
should be set to status = "disabled" state by default. Then
u-boot could re-enable it on the boards that have i2c2 in use.
Regards,
Tony
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