[coreboot-gerrit] New patch to review for coreboot: c6d5a4e Exynos5: Remove unneeded USB delays

[Isaac Christensen (isaac.christensen@se-eng.com)]

Isaac Christensen (isaac.christensen at se-eng.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/6505

-gerrit

commit c6d5a4e1e93b633f00dfc00a1f1e2f3972b4aa24
Author: Stefan Reinauer <reinauer at chromium.org>
Date:   Wed Aug 14 17:14:39 2013 -0700

    Exynos5: Remove unneeded USB delays
    
    Change-Id: I1144e9d6d6c4278842fdd36743c8a88555f81707
    Signed-off-by: Stefan Reinauer <reinauer at google.com>
    Reviewed-on: https://gerrit.chromium.org/gerrit/65912
    Reviewed-by: Ronald G. Minnich <rminnich at chromium.org>
    Commit-Queue: Stefan Reinauer <reinauer at chromium.org>
    Tested-by: Stefan Reinauer <reinauer at chromium.org>
    (cherry picked from commit 95b518877edc88347ce9725ffee32f3aed0de7dc)
    Signed-off-by: Isaac Christensen <isaac.christensen at se-eng.com>
---
 src/cpu/samsung/exynos5250/usb.c | 9 +++++----
 src/cpu/samsung/exynos5420/usb.c | 9 +++++----
 2 files changed, 10 insertions(+), 8 deletions(-)

diff --git a/src/cpu/samsung/exynos5250/usb.c b/src/cpu/samsung/exynos5250/usb.c
index d8e07da..5084707 100644
--- a/src/cpu/samsung/exynos5250/usb.c
+++ b/src/cpu/samsung/exynos5250/usb.c
@@ -88,10 +88,11 @@ static void setup_usb_phy(struct usb_phy *usb, int hsic_gpio)
 	udelay(10);
 	clrbits_le32(&usb->hsicphyctrl1, HOST_CTRL0_PHYSWRST);
 
-	/* PHY clock and power setup time */
-	// FIXME If this happens more than 50ms before executing the payload,
-	// we might not need this delay.
-	mdelay(50);
+	/* At this point we need to wait for 50ms before talking to
+	 * the USB controller (PHY clock and power setup time)
+	 * By the time we are actually in the payload, these 50ms
+	 * will have passed.
+	 */
 }
 
 void usb_init(device_t dev)
diff --git a/src/cpu/samsung/exynos5420/usb.c b/src/cpu/samsung/exynos5420/usb.c
index 4d07699..6e79ef1 100644
--- a/src/cpu/samsung/exynos5420/usb.c
+++ b/src/cpu/samsung/exynos5420/usb.c
@@ -88,10 +88,11 @@ static void setup_usb_phy(struct usb_phy *usb, int hsic_gpio)
 	udelay(10);
 	clrbits_le32(&usb->hsicphyctrl1, HOST_CTRL0_PHYSWRST);
 
-	/* PHY clock and power setup time */
-	// FIXME If this happens more than 50ms before executing the payload,
-	// we might not need this delay.
-	mdelay(50);
+	/* At this point we need to wait for 50ms before talking to
+	 * the USB controller (PHY clock and power setup time)
+	 * By the time we are actually in the payload, these 50ms
+	 * will have passed.
+	 */
 }
 
 void usb_init(device_t dev)