Op 30 aug. 2012, om 22:35 heeft Tony Lindgren <tony@xxxxxxxxxxx> het volgende geschreven:
> * AnilKumar Ch <anilkumar@xxxxxx> [120828 01:11]:
>> Adds GPIO pinctrl nodes to am3358_pinmux master node to control
>> user leds (USR0, USR1, USR2 and USR3) present on BeagleBone.
>>
>> Signed-off-by: AnilKumar Ch <anilkumar@xxxxxx>
>> ---
>> arch/arm/boot/dts/am335x-bone.dts | 14 ++++++++++++++
>> 1 file changed, 14 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/am335x-bone.dts b/arch/arm/boot/dts/am335x-bone.dts
>> index a7906cb..58f5042 100644
>> --- a/arch/arm/boot/dts/am335x-bone.dts
>> +++ b/arch/arm/boot/dts/am335x-bone.dts
>> @@ -18,6 +18,20 @@
>> reg = <0x80000000 0x10000000>; /* 256 MB */
>> };
>>
>> + am3358_pinmux: pinmux@44E10800 {
>> + pinctrl-names = "default";
>> + pinctrl-0 = <&userled_pins>;
>> +
>> + userled_pins: pinmux_userled_pins {
>> + pinctrl-single,pins = <
>> + 0x54 0x7 /* gpmc_a5.gpio1_21, OUTPUT | MODE7 */
>> + 0x58 0x17 /* gpmc_a6.gpio1_22, OUTPUT_PULLUP | MODE7 */
>> + 0x5C 0x7 /* gpmc_a7.gpio1_23, OUTPUT | MODE7 */
>> + 0x60 0x17 /* gpmc_a8.gpio1_24, OUTPUT_PULLUP | MODE7 */
>> + >;
>> + };
>> + };
>> +
>
> Looks like this patch should also claim these pins by the led driver.
> Then the led driver should just do pinctrl_get_select_default(&pdev->dev)
> in it's probe function to set the pins.
FWIW, I've been using this for a while now:
+ leds {
+ compatible = "gpio-leds";
+ heartbeat {
+ label = "beaglebone::usr0";
+ gpios = <&gpio2 21 0>;
+ linux,default-trigger = "heartbeat";
+ };
+
+ mmc {
+ label = "beaglebone:usr1";
+ gpios = <&gpio2 22 0>;
+ linux,default-trigger = "mmc0";
+ };--
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