When McASP is not in use the pins can be put to sleep mode to conserve
power.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
Tested-by: Felipe Balbi <balbi@xxxxxx>
---
arch/arm/boot/dts/am437x-sk-evm.dts | 12 +++++++++++-
1 file changed, 11 insertions(+), 1 deletion(-)
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";
--
2.4.5
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