[U-Boot] [PATCH 1/3] BeagleBoard: turn off clocks in ehci_stop

Joel A Fernandes agnel.joel at gmail.com
Tue Aug 16 04:36:52 CEST 2011


From: Koen Kooi <koen at dominion.thruhere.net>

This fixes display problems in linux

Signed-off-by: Koen Kooi <koen at dominion.thruhere.net>
Signed-off-by: Joel A Fernandes <agnel.joel at gmail.com>
---
 board/ti/beagle/beagle.c |    6 ++++++
 1 files changed, 6 insertions(+), 0 deletions(-)

diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c
index 7768901..a958545 100644
--- a/board/ti/beagle/beagle.c
+++ b/board/ti/beagle/beagle.c
@@ -356,6 +356,12 @@ int ehci_hcd_stop(void)
 	pr_debug("Resetting OMAP3 EHCI\n");
 	omap_set_gpio_dataout(GPIO_PHY_RESET, 0);
 	writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG);
+	/* disable USB clocks */
+	struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
+	sr32(&prcm_base->iclken_usbhost, 0, 1, 0);
+	sr32(&prcm_base->fclken_usbhost, 0, 2, 0);
+	sr32(&prcm_base->iclken3_core, 2, 1, 0);
+	sr32(&prcm_base->fclken3_core, 2, 1, 0);
 	return 0;
 }
 
-- 
1.7.1



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