linux-kernel - [PATCH 2/6] ARM: dts: omap3beagle-xm: Add idle state pins for USB host

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Date:	Wed, 10 Jul 2013 19:22:18 +0300
From:	Roger Quadros <rogerq@...com>
To:	<stern@...land.harvard.edu>
CC:	<gregkh@...uxfoundation.org>, <balbi@...com>,
	<sergei.shtylyov@...entembedded.com>, <khilman@...aro.org>,
	<tony@...mide.com>, <ruslan.bilovol@...com>,
	<linux-usb@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	Roger Quadros <rogerq@...com>
Subject: [PATCH 2/6] ARM: dts: omap3beagle-xm: Add idle state pins for USB host

Add the Idle state pins for USB host and enable WAKEUP on
DIR, DAT0-3, so that the PHY can wakeup the OMAP SoC from
sleep on any USB activity (e.g. remote wakeup or connect/disconnect).

Signed-off-by: Roger Quadros <rogerq@...com>
---
 arch/arm/boot/dts/omap3-beagle-xm.dts |   29 +++++++++++++++++++++++------
 1 files changed, 23 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 371b1e2..91d19fa 100644
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -113,11 +113,6 @@
 };
 
 &omap3_pmx_core {
-	pinctrl-names = "default";
-	pinctrl-0 = <
-			&hsusbb2_pins
-	>;
-
 	uart3_pins: pinmux_uart3_pins {
 		pinctrl-single,pins = <
 			0x16e (PIN_INPUT | PIN_OFF_WAKEUPENABLE | MUX_MODE0) /* uart3_rx_irrx.uart3_rx_irrx */
@@ -125,7 +120,7 @@
 		>;
 	};
 
-	hsusbb2_pins: pinmux_hsusbb2_pins {
+	hsusb2_pins: pinmux_hsusb2_pins {
 		pinctrl-single,pins = <
 			0x5c0 (PIN_OUTPUT | MUX_MODE3)		/* etk_d10.hsusb2_clk */
 			0x5c2 (PIN_OUTPUT | MUX_MODE3)		/* etk_d11.hsusb2_stp */
@@ -141,6 +136,25 @@
 			0x1ae (PIN_INPUT_PULLDOWN | MUX_MODE3)	/* mcspi2_cs1.hsusb2_data3 */
 		>;
 	};
+
+	/* WAKEUP enabled on DIR, DAT0-3 */
+	hsusb2_idle_pins: pinmux_hsusb2_idle_pins {
+		pinctrl-single,pins = <
+			0x5c0 (PIN_OUTPUT | MUX_MODE3)		/* etk_d10.hsusb2_clk */
+			0x5c2 (PIN_OUTPUT | MUX_MODE3)		/* etk_d11.hsusb2_stp */
+			0x5c4 (PIN_INPUT_PULLDOWN | WAKEUP_EN | MUX_MODE3)	/* etk_d12.hsusb2_dir */
+			0x5c6 (PIN_INPUT_PULLDOWN | MUX_MODE3)			/* etk_d13.hsusb2_nxt */
+			0x5c8 (PIN_INPUT_PULLDOWN | WAKEUP_EN | MUX_MODE3)	/* etk_d14.hsusb2_data0 */
+			0x5cA (PIN_INPUT_PULLDOWN | WAKEUP_EN | MUX_MODE3)	/* etk_d15.hsusb2_data1 */
+			0x1a4 (PIN_INPUT_PULLDOWN | MUX_MODE3)	/* mcspi1_cs3.hsusb2_data2 */
+			0x1a6 (PIN_INPUT_PULLDOWN | MUX_MODE3)	/* mcspi2_clk.hsusb2_data7 */
+			0x1a8 (PIN_INPUT_PULLDOWN | MUX_MODE3)	/* mcspi2_simo.hsusb2_data4 */
+			0x1aa (PIN_INPUT_PULLDOWN | MUX_MODE3)	/* mcspi2_somi.hsusb2_data5 */
+			0x1ac (PIN_INPUT_PULLDOWN | MUX_MODE3)	/* mcspi2_cs0.hsusb2_data6 */
+			0x1ae (PIN_INPUT_PULLDOWN | WAKEUP_EN | MUX_MODE3)	/* mcspi2_cs1.hsusb2_data3 */
+		>;
+		interrupts = <77>; /* route padconf wakeup to EHCI IRQ */
+	};
 };
 
 &i2c1 {
@@ -223,6 +237,9 @@
 };
 
 &usbhshost {
+	pinctrl-names = "default", "idle";
+	pinctrl-0 = <&hsusb2_pins>;
+	pinctrl-1 = <&hsusb2_idle_pins>;
 	port2-mode = "ehci-phy";
 };
 
-- 
1.7.4.1

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