On Monday 23 January 2006 2:08 pm, Kumar Gala wrote:
> In some systems using the Freescale EHCI controller if only one port
> of the multiport host (MPH) is being used the other port must be
> disabled if there is no clock signal. Since we dont know how someone
> will wire a board, we disable the clock if the port is not enabled.
>
> Signed-off-by: Kumar Gala <[email protected]>
Acked-by: David Brownell <[email protected]>
> ---
> commit 984d42232fd47ddbeef7c825ec2bafbca9aed5a0
> tree 166532f0cd229b1a6f090c43b3617fd49ff3068a
> parent 2497a5e4242d500178d6d0f0ce4ee9249a38f5dc
> author Kumar Gala <[email protected]> Mon, 23 Jan 2006 16:13:21 -0600
> committer Kumar Gala <[email protected]> Mon, 23 Jan 2006 16:13:21 -0600
>
> drivers/usb/host/ehci-fsl.c | 7 +++++++
> drivers/usb/host/ehci-fsl.h | 1 +
> 2 files changed, 8 insertions(+), 0 deletions(-)
>
> diff --git a/drivers/usb/host/ehci-fsl.c b/drivers/usb/host/ehci-fsl.c
> index f40ee41..032fa6b 100644
> --- a/drivers/usb/host/ehci-fsl.c
> +++ b/drivers/usb/host/ehci-fsl.c
> @@ -161,6 +161,7 @@ static void mpc83xx_setup_phy(struct ehc
> unsigned int port_offset)
> {
> u32 portsc = 0;
> +
> switch (phy_mode) {
> case FSL_USB2_PHY_ULPI:
> portsc |= PORT_PTS_ULPI;
> @@ -175,6 +176,7 @@ static void mpc83xx_setup_phy(struct ehc
> portsc |= PORT_PTS_UTMI;
> break;
> case FSL_USB2_PHY_NONE:
> + portsc |= PORT_PHCD;
> break;
> }
> writel(portsc, &ehci->regs->port_status[port_offset]);
> @@ -209,8 +211,13 @@ static void mpc83xx_usb_setup(struct usb
>
> if (pdata->port_enables & FSL_USB2_PORT0_ENABLED)
> mpc83xx_setup_phy(ehci, pdata->phy_mode, 0);
> + else
> + mpc83xx_setup_phy(ehci, FSL_USB2_PHY_NONE, 0);
> +
> if (pdata->port_enables & FSL_USB2_PORT1_ENABLED)
> mpc83xx_setup_phy(ehci, pdata->phy_mode, 1);
> + else
> + mpc83xx_setup_phy(ehci, FSL_USB2_PHY_NONE, 1);
> }
>
> /* put controller in host mode. */
> diff --git a/drivers/usb/host/ehci-fsl.h b/drivers/usb/host/ehci-fsl.h
> index caac0d1..f579254 100644
> --- a/drivers/usb/host/ehci-fsl.h
> +++ b/drivers/usb/host/ehci-fsl.h
> @@ -26,6 +26,7 @@
> #define PORT_PTS_ULPI (2<<30)
> #define PORT_PTS_SERIAL (3<<30)
> #define PORT_PTS_PTW (1<<28)
> +#define PORT_PHCD (1<<23)
> #define FSL_SOC_USB_PORTSC2 0x188
> #define FSL_SOC_USB_USBMODE 0x1a8
> #define FSL_SOC_USB_SNOOP1 0x400 /* NOTE: big-endian */
>
>
>
-
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