diff options
| author | Sergey Matyukevich <geomatsi@gmail.com> | 2010-06-09 23:09:06 +0400 |
|---|---|---|
| committer | Remy Bohmer <linux@bohmer.net> | 2010-06-30 21:37:36 +0200 |
| commit | 64203c7b0f4568e5ece9fc1b25f763bed88d10b8 (patch) | |
| tree | 6142a6723a07293297aee4c85dd9652a96a46677 /drivers/usb/host/ohci-at91.c | |
| parent | 39ddd10b046fb791f47281ffb2100be01909ad72 (diff) | |
| download | u-boot-imx-64203c7b0f4568e5ece9fc1b25f763bed88d10b8.zip u-boot-imx-64203c7b0f4568e5ece9fc1b25f763bed88d10b8.tar.gz u-boot-imx-64203c7b0f4568e5ece9fc1b25f763bed88d10b8.tar.bz2 | |
USB OHCI support for at91sam9g45 SoC
Add USB OHCI support for at91sam9g45ekes/at91sam9m10g45ek boards.
Note that according to errata from Atmel, OHCI is not operational
on the first revision of at91sam9g45 chip. So this patch enables
OHCI support for later revisions.
Signed-off-by: Sergey Matyukevich <geomatsi@gmail.com>
Diffstat (limited to 'drivers/usb/host/ohci-at91.c')
| -rw-r--r-- | drivers/usb/host/ohci-at91.c | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/drivers/usb/host/ohci-at91.c b/drivers/usb/host/ohci-at91.c index b2e03bc..64fde68 100644 --- a/drivers/usb/host/ohci-at91.c +++ b/drivers/usb/host/ohci-at91.c @@ -41,6 +41,15 @@ int usb_cpu_init(void) writel(get_pllb_init(), &pmc->pllbr); while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != AT91_PMC_LOCKB) ; +#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) + /* Enable UPLL */ + writel(readl(&pmc->uckr) | AT91_PMC_UPLLEN | AT91_PMC_BIASEN, + &pmc->uckr); + while ((readl(&pmc->sr) & AT91_PMC_LOCKU) != AT91_PMC_LOCKU) + ; + + /* Select PLLA as input clock of OHCI */ + writel(AT91_PMC_USBS_USB_UPLL | AT91_PMC_USBDIV_10, &pmc->usb); #endif /* Enable USB host clock. */ @@ -72,6 +81,11 @@ int usb_cpu_stop(void) writel(0, &pmc->pllbr); while ((readl(&pmc->sr) & AT91_PMC_LOCKB) != 0) ; +#elif defined(CONFIG_AT91SAM9G45) || defined(CONFIG_AT91SAM9M10G45) + /* Disable UPLL */ + writel(readl(&pmc->uckr) & (~AT91_PMC_UPLLEN), &pmc->uckr); + while ((readl(&pmc->sr) & AT91_PMC_LOCKU) == AT91_PMC_LOCKU) + ; #endif return 0; |