[PATCH v4 4/9] ARM: dts: support pinctrl single in pxa910

Haojian Zhuang haojian.zhuang at gmail.com
Sat Nov 10 00:37:03 EST 2012


On Sat, Nov 10, 2012 at 6:48 AM, Tony Lindgren <tony at atomide.com> wrote:
> Hi,
>
> To clarify my binding change comment for the generic pinconf
> support, here's an example.
>
> We need to move pinctrl-single pinconf properties here for
> each pin group:
>
> * Haojian Zhuang <haojian.zhuang at gmail.com> [121107 07:21]:
>> +                             uart1_pins: pinmux_uart1_pins {
>> +                                     pinctrl-single,pins = <
>> +                                             0x198 0x6       /* GPIO47_UART1_RXD */
>> +                                             0x19c 0x6       /* GPIO48_UART1_TXD */
>> +                                     >;
>> +                                     pinctrl-single,power-source = <0x2>;
>> +                                     pinctrl-single,bias = <0x6>;
>                                         pinctrl-single,power-source-mask = <0x1800>;
>                                         pinctrl-single,bias-mask = <0xe000>;
>                                         pinctrl-single,bias-disable = <0>;
>                                         pinctrl-single,bias-pull-down = <0xa000>;
>                                         pinctrl-single,bias-pull-up = <0xc000>;
It's OK.

>> +                             };
>
>
>
>> --- a/arch/arm/boot/dts/pxa910.dtsi
>> +++ b/arch/arm/boot/dts/pxa910.dtsi
>> @@ -54,6 +54,80 @@
>>                       reg = <0xd4000000 0x00200000>;
>>                       ranges;
>>
>> +                     pmx: pinmux at d401e000 {
>> +                             compatible = "pinconf-single";
>> +                             reg = <0xd401e000 0x0330>;
>> +                             #address-cells = <1>;
>> +                             #size-cells = <1>;
>> +                             ranges;
>> +
>> +                             pinctrl-single,register-width = <32>;
>> +                             pinctrl-single,function-mask = <7>;
>
> And then..
>
>> +                             pinctrl-single,power-source-mask = <0x1800>;
>> +                             pinctrl-single,bias-mask = <0xe000>;
>> +                             pinctrl-single,bias-disable = <0>;
>> +                             pinctrl-single,bias-pull-down = <0xa000>;
>> +                             pinctrl-single,bias-pull-up = <0xc000>;
>> +                             pinctrl-single,input-schmitt-mask = <0x70>;
>
> ..remove these from here. Otherwise pinctrl-single,bits type controllers
> won't be able to use the pinconf functions as we can have multiple pins
> supported in a single register.
>
Will do



More information about the linux-arm-kernel mailing list