netdev - [PATCH 11/13] ARM: dts: am437x-gp-evm: Add pinctrl sleep states for dcan pins

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Date:	Mon, 8 Sep 2014 17:10:40 +0300
From:	Roger Quadros <rogerq@...com>
To:	<wg@...ndegger.com>, <mkl@...gutronix.de>, <tony@...mide.com>
CC:	<tglx@...utronix.de>, <linux-omap@...r.kernel.org>,
	<linux-can@...r.kernel.org>, <netdev@...r.kernel.org>,
	<mugunthanvnm@...com>, <george.cherian@...com>, <balbi@...com>,
	<nsekhar@...com>, <nm@...com>, Dave Gerlach <d-gerlach@...com>
Subject: [PATCH 11/13] ARM: dts: am437x-gp-evm: Add pinctrl sleep states for dcan pins

From: Dave Gerlach <d-gerlach@...com>

Define pinctrl sleep states for both dcan0 and dcan1 to place pull downs
on the lines to optimize power savings during suspend.

Signed-off-by: Dave Gerlach <d-gerlach@...com>
Signed-off-by: Sekhar Nori <nsekhar@...com>
---
 arch/arm/boot/dts/am437x-gp-evm.dts | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/am437x-gp-evm.dts b/arch/arm/boot/dts/am437x-gp-evm.dts
index 6d03baa..ca9e1ab 100644
--- a/arch/arm/boot/dts/am437x-gp-evm.dts
+++ b/arch/arm/boot/dts/am437x-gp-evm.dts
@@ -262,12 +262,26 @@
 		>;
 	};
 
+	dcan0_sleep: dcan0_sleep_pins {
+		pinctrl-single,pins = <
+			0x178 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+			0x17c (PIN_INPUT_PULLDOWN | MUX_MODE7)
+		>;
+	};
+
 	dcan1_default: dcan1_default_pins {
 		pinctrl-single,pins = <
 			0x180 (PIN_OUTPUT_PULLDOWN | MUX_MODE2) /* uart1_rxd.d_can1_tx */
 			0x184 (PIN_INPUT_PULLUP | MUX_MODE2) /* uart1_txd.d_can1_rx */
 		>;
 	};
+
+	dcan1_sleep: dcan1_sleep_pins {
+		pinctrl-single,pins = <
+			0x180 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+			0x184 (PIN_INPUT_PULLDOWN | MUX_MODE7)
+		>;
+	};
 };
 
 &i2c0 {
@@ -527,13 +541,15 @@
 };
 
 &dcan0 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "sleep";
 	pinctrl-0 = <&dcan0_default>;
+	pinctrl-1 = <&dcan0_sleep>;
 	status = "okay";
 };
 
 &dcan1 {
-	pinctrl-names = "default";
+	pinctrl-names = "default", "sleep";
 	pinctrl-0 = <&dcan1_default>;
+	pinctrl-1 = <&dcan1_sleep>;
 	status = "okay";
 };
-- 
1.8.3.2

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