ARM: dts: am43xx-epos-evm: Add sleep pinmux for gpmc

Add sleep pinmux for gpmc.
Signed-off-by: Andrew F. Davis <afd@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

arch/arm/boot/dts/am43x-epos-evm.dts

@@ -198,7 +198,7 @@ AM4372_IOPAD(0x98c, PIN_INPUT_PULLUP | SLEWCTRL_FAST | MUX_MODE0)	/* i2c0_scl.i2
 			>;
 		};
 
-		nand_flash_x8: nand_flash_x8 {
+		nand_flash_x8_default: nand_flash_x8_default {
 			pinctrl-single,pins = <
 				AM4372_IOPAD(0x840, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* gpmc_a0.SELQSPIorNAND/GPIO */
 				AM4372_IOPAD(0x800, PIN_INPUT_PULLDOWN | MUX_MODE0)	/* gpmc_ad0.gpmc_ad0 */
@@ -219,6 +219,27 @@ AM4372_IOPAD(0x89c, PIN_OUTPUT | MUX_MODE0)		/* gpmc_be0n_cle.gpmc_be0n_cle */
 			>;
 		};
 
+		nand_flash_x8_sleep: nand_flash_x8_sleep {
+			pinctrl-single,pins = <
+				AM4372_IOPAD(0x840, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x800, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x804, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x808, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x80c, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x810, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x814, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x818, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x81c, DS0_PIN_OUTPUT_PULLDOWN | MUX_MODE7)
+				AM4372_IOPAD(0x870, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+				AM4372_IOPAD(0x874, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+				AM4372_IOPAD(0x87c, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+				AM4372_IOPAD(0x890, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+				AM4372_IOPAD(0x894, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+				AM4372_IOPAD(0x898, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+				AM4372_IOPAD(0x89c, DS0_PIN_OUTPUT_PULLUP | MUX_MODE7)
+			>;
+		};
+
 		ecap0_pins_default: backlight_pins_default {
 			pinctrl-single,pins = <
 				AM4372_IOPAD(0x964, MUX_MODE0)         /* eCAP0_in_PWM0_out.eCAP0_in_PWM0_out MODE0 */
@@ -589,8 +610,9 @@ &elm {
 
 &gpmc {
 	status = "okay";	/* Disable QSPI when enabling GPMC (NAND) */
-	pinctrl-names = "default";
-	pinctrl-0 = <&nand_flash_x8>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&nand_flash_x8_default>;
+	pinctrl-1 = <&nand_flash_x8_sleep>;
 	ranges = <0 0 0x08000000 0x01000000>;	/* CS0 space. Min partition = 16MB */
 	nand@0,0 {
 		compatible = "ti,omap2-nand";