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[v2,08/12] ARM: dts: am437x-gp-evm: Add pinctrl sleep states for dcan pins

Message ID 1410274534-22826-9-git-send-email-rogerq@ti.com
State New
Headers show

Commit Message

Roger Quadros Sept. 9, 2014, 2:55 p.m. UTC 
From: Dave Gerlach <d-gerlach@ti.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@ti.com>
Signed-off-by: Sekhar Nori <nsekhar@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/boot/dts/am437x-gp-evm.dts | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)
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Patch

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";
 };