From: Marek Szyprowski <m.szyprowski@samsung.com>
Date: Mon, 19 Jul 2010 14:01:41 +0000 (+0200)
Subject: USB: s3c-hsotg: modify only selected bits in S3C_PHYPWR register
X-Git-Tag: 2.1b_release~7315^2~28
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=1eb838d3e2a473acbb9b21278e75b79640fb2c7b;p=platform%2Fkernel%2Fkernel-mfld-blackbay.git

USB: s3c-hsotg: modify only selected bits in S3C_PHYPWR register

S5PV210 SoCs has 2 USB PHY interfaces, both enabled by writing zero to
S3C_PHYPWR register. HS/OTG driver uses only PHY0, so do not touch bits
related to PHY1.

Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
---

diff --git a/drivers/usb/gadget/s3c-hsotg.c b/drivers/usb/gadget/s3c-hsotg.c
index ce272b4..258ca01 100644
--- a/drivers/usb/gadget/s3c-hsotg.c
+++ b/drivers/usb/gadget/s3c-hsotg.c
@@ -2801,9 +2801,11 @@ static void __devinit s3c_hsotg_initep(struct s3c_hsotg *hsotg,
 static void s3c_hsotg_otgreset(struct s3c_hsotg *hsotg)
 {
 	struct clk *xusbxti;
-	u32 osc;
+	u32 pwr, osc;
 
-	writel(0, S3C_PHYPWR);
+	pwr = readl(S3C_PHYPWR);
+	pwr &= ~0x19;
+	writel(pwr, S3C_PHYPWR);
 	mdelay(1);
 
 	osc = hsotg->plat->is_osc ? S3C_PHYCLK_EXT_OSC : 0;