summaryrefslogtreecommitdiff
path: root/arch
diff options
context:
space:
mode:
authorGovindraj.R <govindraj.raja@ti.com>2012-02-06 03:55:35 +0000
committerAlbert ARIBAUD <albert.u.boot@aribaud.net>2012-02-12 10:11:31 +0100
commit95f87910422020fbbdc3dbbdd3e00f84c53b0b26 (patch)
tree3e09d30583f6f3faa8c0c8ec8d74135acc17b226 /arch
parent43b62393da6dfdd7f503d1b37344463a05ea47b5 (diff)
OMAP3+: Clock: Adding ehci clock enabling
Adding ehci clock enabling mechanism part of clock framework. When essential clocks are enabled during init phase usb host clocks can also be enabled from clock framework. Acked-by: Igor Grinberg <grinberg@compulab.co.il> Signed-off-by: Govindraj.R <govindraj.raja@ti.com> Tested-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'arch')
-rw-r--r--arch/arm/cpu/armv7/omap3/board.c4
-rw-r--r--arch/arm/cpu/armv7/omap3/clock.c20
-rw-r--r--arch/arm/cpu/armv7/omap4/clocks.c5
-rw-r--r--arch/arm/include/asm/arch-omap3/sys_proto.h1
4 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap3/board.c b/arch/arm/cpu/armv7/omap3/board.c
index 871aa37df8..054e9c481c 100644
--- a/arch/arm/cpu/armv7/omap3/board.c
+++ b/arch/arm/cpu/armv7/omap3/board.c
@@ -228,6 +228,10 @@ void s_init(void)
per_clocks_enable();
+#ifdef CONFIG_USB_EHCI_OMAP
+ ehci_clocks_enable();
+#endif
+
#ifdef CONFIG_SPL_BUILD
preloader_console_init();
diff --git a/arch/arm/cpu/armv7/omap3/clock.c b/arch/arm/cpu/armv7/omap3/clock.c
index e0d65c7a4a..567817e0ec 100644
--- a/arch/arm/cpu/armv7/omap3/clock.c
+++ b/arch/arm/cpu/armv7/omap3/clock.c
@@ -626,6 +626,26 @@ void prcm_init(void)
sdelay(5000);
}
+/*
+ * Enable usb ehci uhh, tll clocks
+ */
+void ehci_clocks_enable(void)
+{
+ struct prcm *prcm_base = (struct prcm *)PRCM_BASE;
+
+ /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */
+ sr32(&prcm_base->iclken_usbhost, 0, 1, 1);
+ /*
+ * Enable USBHOST_48M_FCLK (USBHOST_FCLK1)
+ * and USBHOST_120M_FCLK (USBHOST_FCLK2)
+ */
+ sr32(&prcm_base->fclken_usbhost, 0, 2, 3);
+ /* Enable USBTTL_ICLK */
+ sr32(&prcm_base->iclken3_core, 2, 1, 1);
+ /* Enable USBTTL_FCLK */
+ sr32(&prcm_base->fclken3_core, 2, 1, 1);
+}
+
/******************************************************************************
* peripheral_enable() - Enable the clks & power for perifs (GPT2, UART1,...)
*****************************************************************************/
diff --git a/arch/arm/cpu/armv7/omap4/clocks.c b/arch/arm/cpu/armv7/omap4/clocks.c
index 0886f92431..12e283af76 100644
--- a/arch/arm/cpu/armv7/omap4/clocks.c
+++ b/arch/arm/cpu/armv7/omap4/clocks.c
@@ -342,6 +342,9 @@ void enable_basic_clocks(void)
&prcm->cm_l4per_gpio4_clkctrl,
&prcm->cm_l4per_gpio5_clkctrl,
&prcm->cm_l4per_gpio6_clkctrl,
+ &prcm->cm_l3init_usbphy_clkctrl,
+ &prcm->cm_clksel_usb_60mhz,
+ &prcm->cm_l3init_hsusbtll_clkctrl,
0
};
@@ -352,6 +355,8 @@ void enable_basic_clocks(void)
&prcm->cm_l4per_gptimer2_clkctrl,
&prcm->cm_wkup_wdtimer2_clkctrl,
&prcm->cm_l4per_uart3_clkctrl,
+ &prcm->cm_l3init_fsusb_clkctrl,
+ &prcm->cm_l3init_hsusbhost_clkctrl,
0
};
diff --git a/arch/arm/include/asm/arch-omap3/sys_proto.h b/arch/arm/include/asm/arch-omap3/sys_proto.h
index e5031d5022..2a89e56534 100644
--- a/arch/arm/include/asm/arch-omap3/sys_proto.h
+++ b/arch/arm/include/asm/arch-omap3/sys_proto.h
@@ -34,6 +34,7 @@ struct emu_hal_params {
void prcm_init(void);
void per_clocks_enable(void);
+void ehci_clocks_enable(void);
void memif_init(void);
void sdrc_init(void);