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OMAP3+: Clock: Adding ehci clock enabling

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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>
This commit is contained in:
Govindraj.R 2012-02-06 03:55:35 +00:00 committed by Albert ARIBAUD
parent 43b62393da
commit 95f8791042
4 changed files with 30 additions and 0 deletions
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4
arch/arm/cpu/armv7/omap3/board.c
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@ -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();

20
arch/arm/cpu/armv7/omap3/clock.c
View File

@ -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,...)
*****************************************************************************/

5
arch/arm/cpu/armv7/omap4/clocks.c
View File

@ -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
};

1
arch/arm/include/asm/arch-omap3/sys_proto.h
View File

@ -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);