Tom,
> From: Tom Rix <Tom.Rix <at> windriver.com>
> Subject: [PATCH 4/8] OMAP3 Add usb device support
> Newsgroups: gmane.comp.boot-loaders.u-boot
> Date: 2009-09-28 16:37:25 GMT (4 weeks, 12 hours and 29 minutes ago)
> This change adds the usb device support for musb.
>
> Omap3 platform support added at the same level as davinci.
>
> The interface for usbtty to use the musb device support was added.
>
> Verified on omap3 beagle, zoom1 and zoom2.
>
> Signed-off-by: Tom Rix <Tom.Rix <at> windriver.com>
> ---
> drivers/serial/usbtty.h | 2 +
> drivers/usb/musb/Makefile | 2 +
> drivers/usb/musb/musb_core.c | 8 +-
> drivers/usb/musb/musb_core.h | 40 ++
> drivers/usb/musb/musb_debug.h | 205 +++++++++
> drivers/usb/musb/musb_udc.c | 963
> +++++++++++++++++++++++++++++++++++++++++
> drivers/usb/musb/omap3.c | 129 ++++++
> drivers/usb/musb/omap3.h | 48 ++
> include/usb.h | 3 +-
> include/usb/musb_udc.h | 54 +++
> 10 files changed, 1451 insertions(+), 3 deletions(-)
> create mode 100644 drivers/usb/musb/musb_debug.h
> create mode 100644 drivers/usb/musb/musb_udc.c
> create mode 100644 drivers/usb/musb/omap3.c
> create mode 100644 drivers/usb/musb/omap3.h
> create mode 100644 include/usb/musb_udc.h
>
<snip>
..
..
> +int musb_platform_init(void)
> +{
> + int ret = -1;
> +
> + if (platform_needs_initialization) {
> + u32 stdby;
> +
> + if (twl4030_usb_ulpi_init()) {
> + serial_printf("ERROR: %s Could not initialize
> PHY\n",
> + __PRETTY_FUNCTION__);
> + goto end;
> + }
OMAP3EVM uses ISP1504 phy and so twl4030 related init is not required.
Can we move this within #ifdef like,
#ifndef CONFIG_OMAP3_EVM
+ if (twl4030_usb_ulpi_init()) {
...
...
#endif
-Ajay
> +
> + otg = (struct omap3_otg_regs *)OMAP3_OTG_BASE;
> +
> + /* Set OTG to always be on */
> + writel(OMAP3_OTG_SYSCONFIG_NO_STANDBY_MODE |
> + OMAP3_OTG_SYSCONFIG_NO_IDLE_MODE, &otg->sysconfig);
> +
> + /* Set the interface */
> + writel(OMAP3_OTG_INTERFSEL_OMAP, &otg->interfsel);
> +
> + /* Clear force standby */
> + stdby = readl(&otg->forcestdby);
> + stdby &= ~OMAP3_OTG_FORCESTDBY_STANDBY;
> + writel(stdby, &otg->forcestdby);
> +
> + platform_needs_initialization = 0;
> + }
> +
> + ret = platform_needs_initialization;
> +end:
> + return ret;
> +
> +}
> +
> +
> +/* UDC level routines */
> +void udc_irq(void);
> +void udc_set_nak(int ep_num);
> +void udc_unset_nak(int ep_num);
> +int udc_endpoint_write(struct usb_endpoint_instance *endpoint);
> +void udc_setup_ep(struct usb_device_instance *device, unsigned int id,
> + struct usb_endpoint_instance *endpoint);
> +void udc_connect(void);
> +void udc_disconnect(void);
> +void udc_enable(struct usb_device_instance *device);
> +void udc_disable(void);
> +void udc_startup_events(struct usb_device_instance *device);
> +int udc_init(void);
> +
> +/* usbtty */
> +#ifdef CONFIG_USB_TTY
> +
> +#define EP0_MAX_PACKET_SIZE 64 /* MUSB_EP0_FIFOSIZE */
> +#define UDC_INT_ENDPOINT 1
> +#define UDC_INT_PACKET_SIZE 64
> +#define UDC_OUT_ENDPOINT 2
> +#define UDC_OUT_PACKET_SIZE 64
> +#define UDC_IN_ENDPOINT 3
> +#define UDC_IN_PACKET_SIZE 64
> +#define UDC_BULK_PACKET_SIZE 64
> +
> +#endif /* CONFIG_USB_TTY */
> +
> +#endif /* __MUSB_UDC_H__ */
> +
> --
> 1.6.0.6
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