[PATCH RESEND v4 2/3] arm/dts: AM33XX: Configure pinmuxs for user leds control on Bone

Op 30 aug. 2012, om 22:35 heeft Tony Lindgren [off-list ref] het volgende geschreven:

* AnilKumar Ch [off-list ref] [120828 01:11]:

quoted

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 <redacted>
---
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 at 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";
+               };