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Diffstat (limited to 'arch/arm/mach-omap2/omap_hwmod_44xx_data.c')
-rw-r--r--arch/arm/mach-omap2/omap_hwmod_44xx_data.c12
1 files changed, 11 insertions, 1 deletions
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index 0e47d2e1687c..eaba9dc91a0d 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -2719,7 +2719,17 @@ static struct omap_hwmod omap44xx_ocp2scp_usb_phy_hwmod = {
 	.name		= "ocp2scp_usb_phy",
 	.class		= &omap44xx_ocp2scp_hwmod_class,
 	.clkdm_name	= "l3_init_clkdm",
-	.main_clk	= "func_48m_fclk",
+	/*
+	 * ocp2scp_usb_phy_phy_48m is provided by the OMAP4 PRCM IP
+	 * block as an "optional clock," and normally should never be
+	 * specified as the main_clk for an OMAP IP block.  However it
+	 * turns out that this clock is actually the main clock for
+	 * the ocp2scp_usb_phy IP block:
+	 * http://lists.infradead.org/pipermail/linux-arm-kernel/2012-September/119943.html
+	 * So listing ocp2scp_usb_phy_phy_48m as a main_clk here seems
+	 * to be the best workaround.
+	 */
+	.main_clk	= "ocp2scp_usb_phy_phy_48m",
 	.prcm = {
 		.omap4 = {
 			.clkctrl_offs = OMAP4_CM_L3INIT_USBPHYOCP2SCP_CLKCTRL_OFFSET,