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From: Roger Quadros <rogerq@ti.com>
To: <stern@rowland.harvard.edu>
Cc: <gregkh@linuxfoundation.org>, <balbi@ti.com>,
	<sergei.shtylyov@cogentembedded.com>, <khilman@linaro.org>,
	<tony@atomide.com>, <ruslan.bilovol@ti.com>,
	<linux-usb@vger.kernel.org>, <linux-omap@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	Roger Quadros <rogerq@ti.com>
Subject: [PATCH 1/6] ARM: OMAP3: Enable Hardware Save and Restore for USB Host
Date: Wed, 10 Jul 2013 19:17:56 +0300	[thread overview]
Message-ID: <1373473081-27181-2-git-send-email-rogerq@ti.com> (raw)
In-Reply-To: <1373473081-27181-1-git-send-email-rogerq@ti.com>

To ensure hardware context is restored while resuming from
OFF mode we need to enable the Hardware SAR bit for the
USB Host power domain.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/mach-omap2/powerdomains3xxx_data.c |    8 +-------
 1 files changed, 1 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-omap2/powerdomains3xxx_data.c b/arch/arm/mach-omap2/powerdomains3xxx_data.c
index e2d4bd8..7b44d1f 100644
--- a/arch/arm/mach-omap2/powerdomains3xxx_data.c
+++ b/arch/arm/mach-omap2/powerdomains3xxx_data.c
@@ -289,13 +289,7 @@ static struct powerdomain usbhost_pwrdm = {
 	.prcm_offs	  = OMAP3430ES2_USBHOST_MOD,
 	.pwrsts		  = PWRSTS_OFF_RET_ON,
 	.pwrsts_logic_ret = PWRSTS_RET,
-	/*
-	 * REVISIT: Enabling usb host save and restore mechanism seems to
-	 * leave the usb host domain permanently in ACTIVE mode after
-	 * changing the usb host power domain state from OFF to active once.
-	 * Disabling for now.
-	 */
-	/*.flags	  = PWRDM_HAS_HDWR_SAR,*/ /* for USBHOST ctrlr only */
+	.flags		  = PWRDM_HAS_HDWR_SAR, /* for USBHOST ctrlr only */
 	.banks		  = 1,
 	.pwrsts_mem_ret	  = {
 		[0] = PWRSTS_RET, /* MEMRETSTATE */
-- 
1.7.4.1


  reply	other threads:[~2013-07-10 16:18 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-07-10 16:17 [PATCH 0/6] USB: Implement runtime idling and remote wakeup for OMAP EHCI controller Roger Quadros
2013-07-10 16:17 ` Roger Quadros [this message]
2013-07-10 16:22 ` [PATCH 2/6] ARM: dts: omap3beagle-xm: Add idle state pins for USB host Roger Quadros
2013-07-10 16:22 ` [PATCH 3/6] mfd: omap-usb-host: move initialization to module_init() Roger Quadros
2013-07-10 16:23 ` [PATCH 4/6] mfd: omap-usb-host: Put pins in IDLE state on suspend Roger Quadros
2013-07-14 13:22   ` Kevin Hilman
2013-07-15  8:23     ` Roger Quadros
2013-07-10 16:23 ` [PATCH 5/6] USB: Support wakeup IRQ for suspended controllers Roger Quadros
2013-07-10 18:45   ` Alan Stern
2013-07-11  7:30     ` Roger Quadros
2013-07-10 19:08   ` Alan Stern
2013-07-11  7:30     ` Roger Quadros
2013-07-10 16:23 ` [PATCH 6/6] USB: ehci-omap: Implement suspend/resume Roger Quadros
2013-07-10 19:04   ` Alan Stern
2013-07-11  8:50     ` Roger Quadros
2013-07-11 15:14       ` Alan Stern
2013-07-22 13:16         ` Roger Quadros
2013-07-22 15:18           ` Alan Stern
2013-07-23  9:18             ` Roger Quadros
2013-07-23 14:14               ` Alan Stern

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