linux-kernel - [PATCH 3/3] ARM: dts: omap4-sdp: add dynamic pin states for uart3/4

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Date:	Wed, 17 Jul 2013 14:41:52 +0300
From:	Grygorii Strashko <grygorii.strashko@...com>
To:	Tony Lindgren <tony@...mide.com>, Kevin Hilman <khilman@...aro.org>
CC:	<linux-arm-kernel@...ts.infradead.org>,
	<linux-omap@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
	<devicetree-discuss@...ts.ozlabs.org>,
	Grygorii Strashko <grygorii.strashko@...com>,
	Benoit Cousson <benoit.cousson@...aro.org>,
	Linus Walleij <linus.walleij@...aro.org>,
	Stephen Warren <swarren@...dotorg.org>
Subject: [PATCH 3/3] ARM: dts: omap4-sdp: add dynamic pin states for uart3/4

Add dynamic "active"/"idle" pin states for uart3/4 which will be applied
when uart3/4 state is switched from active to idle and back by Runtime
PM or during system suspend.

CC: Benoit Cousson <benoit.cousson@...aro.org>
CC: Linus Walleij <linus.walleij@...aro.org>
CC: Stephen Warren <swarren@...dotorg.org>
Signed-off-by: Grygorii Strashko <grygorii.strashko@...com>
---
 arch/arm/boot/dts/omap4-sdp.dts |   34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

diff --git a/arch/arm/boot/dts/omap4-sdp.dts b/arch/arm/boot/dts/omap4-sdp.dts
index 7951b4e..2624504 100644
--- a/arch/arm/boot/dts/omap4-sdp.dts
+++ b/arch/arm/boot/dts/omap4-sdp.dts
@@ -181,18 +181,40 @@
 		pinctrl-single,pins = <
 			0x100 (PIN_INPUT_PULLUP | MUX_MODE0)	/* uart3_cts_rctx.uart3_cts_rctx */
 			0x102 (PIN_OUTPUT | MUX_MODE0)		/* uart3_rts_sd.uart3_rts_sd */
-			0x104 (PIN_INPUT | MUX_MODE0)		/* uart3_rx_irrx.uart3_rx_irrx */
 			0x106 (PIN_OUTPUT | MUX_MODE0)		/* uart3_tx_irtx.uart3_tx_irtx */
 		>;
 	};
 
+	uart3_pins_active: pinmux_uart3_pins_active {
+		pinctrl-single,pins = <
+			0x104 (PIN_INPUT | MUX_MODE0)		/* uart3_rx_irrx.uart3_rx_irrx */
+		>;
+	};
+
+	uart3_pins_idle: pinmux_uart3_pins_idle {
+		pinctrl-single,pins = <
+			0x104 (WAKEUP_EN | PIN_INPUT | MUX_MODE0)	/* uart3_rx_irrx.uart3_rx_irrx */
+		>;
+	};
+
 	uart4_pins: pinmux_uart4_pins {
 		pinctrl-single,pins = <
-			0x11c (PIN_INPUT | MUX_MODE0)		/* uart4_rx.uart4_rx */
 			0x11e (PIN_OUTPUT | MUX_MODE0)		/* uart4_tx.uart4_tx */
 		>;
 	};
 
+	uart4_pins_active: pinmux_uart4_pins_active {
+		pinctrl-single,pins = <
+			0x11c (PIN_INPUT | MUX_MODE0)		/* uart3_rx_irrx.uart3_rx_irrx */
+		>;
+	};
+
+	uart4_pins_idle: pinmux_uart4_pins_idle {
+		pinctrl-single,pins = <
+			0x11c (WAKEUP_EN | PIN_INPUT | MUX_MODE0)	/* uart3_rx_irrx.uart3_rx_irrx */
+		>;
+	};
+
 	twl6030_pins: pinmux_twl6030_pins {
 		pinctrl-single,pins = <
 			0x15e (WAKEUP_EN | PIN_INPUT_PULLUP | MUX_MODE0)	/* sys_nirq1.sys_nirq1 */
@@ -510,13 +532,17 @@
 };
 
 &uart3 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "active", "idle";
 	pinctrl-0 = <&uart3_pins>;
+	pinctrl-1 = <&uart3_pins_active>;
+	pinctrl-2 = <&uart3_pins_idle>;
 };
 
 &uart4 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "active", "idle";
 	pinctrl-0 = <&uart4_pins>;
+	pinctrl-1 = <&uart4_pins_active>;
+	pinctrl-2 = <&uart4_pins_idle>;
 };
 
 &mcbsp3 {
-- 
1.7.9.5

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