[U-Boot] [PATCH 1/2] usb/ehci: Add USB support for the MX6Q
Dirk Behme
dirk.behme at de.bosch.com
Thu Feb 9 08:24:15 CET 2012
Hi Wolfgang,
On 08.02.2012 16:23, Wolfgang Grandegger wrote:
> Currently, only USB Host 1 is supported.
>
> Cc: Remy Bohmer <linux at bohmer.net>
> Signed-off-by: Wolfgang Grandegger <wg at denx.de>
> ---
> arch/arm/cpu/armv7/mx6/clock.c | 13 ++
> arch/arm/include/asm/arch-mx6/imx-regs.h | 3 +
> drivers/usb/host/Makefile | 1 +
> drivers/usb/host/ehci-mx6.c | 205 ++++++++++++++++++++++++++++++
> 4 files changed, 222 insertions(+), 0 deletions(-)
> create mode 100644 drivers/usb/host/ehci-mx6.c
>
> diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
> index fa3a124..ef98563 100644
> --- a/arch/arm/cpu/armv7/mx6/clock.c
> +++ b/arch/arm/cpu/armv7/mx6/clock.c
> @@ -36,6 +36,19 @@ enum pll_clocks {
>
> struct imx_ccm_reg *imx_ccm = (struct imx_ccm_reg *)CCM_BASE_ADDR;
>
> +void enable_usboh3_clk(unsigned char enable)
> +{
> + u32 reg;
> +
> + reg = __raw_readl(&imx_ccm->CCGR6);
> + if (enable)
> + reg |= MXC_CCM_CCGR_CG_MASK << MXC_CCM_CCGR0_CG0_OFFSET;
> + else
> + reg &= ~(MXC_CCM_CCGR_CG_MASK << MXC_CCM_CCGR0_CG0_OFFSET);
> + __raw_writel(reg, &imx_ccm->CCGR6);
> +
> +}
> +
> static u32 decode_pll(enum pll_clocks pll, u32 infreq)
> {
> u32 div;
...
> diff --git a/drivers/usb/host/ehci-mx6.c b/drivers/usb/host/ehci-mx6.c
> new file mode 100644
> index 0000000..b7bf49d
> --- /dev/null
> +++ b/drivers/usb/host/ehci-mx6.c
...
> +int ehci_hcd_init(void)
> +{
> + struct usb_ehci *ehci;
> +
> + enable_usboh3_clk(1);
ehci-mx6.c: In function 'ehci_hcd_init':
ehci-mx6.c:171: warning: implicit declaration of function
'enable_usboh3_clk'
Best regards
Dirk
More information about the U-Boot
mailing list