From mboxrd@z Thu Jan 1 00:00:00 1970 From: Roger Quadros Subject: [PATCH 1/6] ARM: OMAP3: Enable Hardware Save and Restore for USB Host Date: Wed, 10 Jul 2013 19:17:56 +0300 Message-ID: <1373473081-27181-2-git-send-email-rogerq@ti.com> References: <1373473081-27181-1-git-send-email-rogerq@ti.com> Mime-Version: 1.0 Content-Type: text/plain Return-path: In-Reply-To: <1373473081-27181-1-git-send-email-rogerq@ti.com> Sender: linux-kernel-owner@vger.kernel.org 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 List-Id: linux-omap@vger.kernel.org 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 --- 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