ARM: dts: am437x-sk-evm: Add sleep pin settings for mcasp1

When McASP is not in use the pins can be put to sleep mode to conserve
power.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Tested-by: Felipe Balbi <balbi@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 11 insertions, 1 deletions

diff --git a/arch/arm/boot/dts/am437x-sk-evm.dts b/arch/arm/boot/dts/am437x-sk-evm.dts
index c17097d2c167..b5de6b0d622c 100644
--- a/arch/arm/boot/dts/am437x-sk-evm.dts
+++ b/arch/arm/boot/dts/am437x-sk-evm.dts
@@ -364,6 +364,15 @@
                 >;
         };
 
+        mcasp1_pins_sleep: mcasp1_pins_sleep {
+                pinctrl-single,pins = <
+                        0x10c (PIN_INPUT_PULLDOWN | MUX_MODE7)
+                        0x110 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+                        0x108 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+                        0x144 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+                >;
+        };
+
         lcd_pins: lcd_pins {
                 pinctrl-single,pins = <
                         0x1c (PIN_OUTPUT_PULLDOWN | MUX_MODE7) /* gpcm_ad7.gpio1_7 */
@@ -640,8 +649,9 @@
 };
 
 &mcasp1 {
-        pinctrl-names = "default";
+        pinctrl-names = "default", "sleep";
         pinctrl-0 = <&mcasp1_pins>;
+        pinctrl-1 = <&mcasp1_pins_sleep>;
 
         status = "okay";