diff options
| author |   Cory Maccarrone <darkstar6262@gmail.com> | 2009-11-22 10:10:52 -0800 |
|---|---|---|
| committer |   Tony Lindgren <tony@atomide.com> | 2009-11-22 10:24:32 -0800 |
| commit | 45f780a06153544ab84fd1da3a8b28c07f61da1d (patch) | |
| tree | a2821193afd713c978a828f3dc6d1a05da6ea298 /arch/arm/plat-omap/usb.c | |
| parent | omap1: mmc: Add platform init for omap7xx (diff) | |
| download | linux-dev-45f780a06153544ab84fd1da3a8b28c07f61da1d.tar.xz linux-dev-45f780a06153544ab84fd1da3a8b28c07f61da1d.zip | |
omap1: omap_udc: Add clocking and disable vbus sense for omap7xx
The l3_ocpi_ck clock is needed on omap7xx processors for USB.
Additionally, bit 8 of the SOFT_REQ_REG needs to be enabled for
the usb_dc_ck on omap7xx, which is a different bit than that
of the omap16xx-defined clock of the same name.
I added a provision for the usb_dc_ck and l3_ocpi_ck clocks as
dc_clk and hhc_clk, respectively, for omap7xx CPUs. Additionally,
I added a check in machine_without_vbus_sense for all omap7xx
devices, as presently I know of no omap7xx-based devices that
have vbus sense, and it made more sense to me to use a cpu check
here than to spell out each machine one at a time. Finally, DMA
is disabled for omap7xx, as it causes problems with these chips.
Cc: linux-usb@vger.kernel.org
Cc: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Cory Maccarrone <darkstar6262@gmail.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/plat-omap/usb.c')
| -rw-r--r-- | arch/arm/plat-omap/usb.c | 20 |
1 files changed, 14 insertions, 6 deletions
diff --git a/arch/arm/plat-omap/usb.c b/arch/arm/plat-omap/usb.c index 0ea1e0beb455..51033a4503c3 100644 --- a/arch/arm/plat-omap/usb.c +++ b/arch/arm/plat-omap/usb.c @@ -159,11 +159,14 @@ static u32 __init omap_usb0_init(unsigned nwires, unsigned is_device) * - OTG support on this port not yet written */ - l = omap_readl(USB_TRANSCEIVER_CTRL); - l &= ~(7 << 4); - if (!is_device) - l |= (3 << 1); - omap_writel(l, USB_TRANSCEIVER_CTRL); + /* Don't do this for omap7xx -- it causes USB to not work correctly */ + if (!cpu_is_omap7xx()) { + l = omap_readl(USB_TRANSCEIVER_CTRL); + l &= ~(7 << 4); + if (!is_device) + l |= (3 << 1); + omap_writel(l, USB_TRANSCEIVER_CTRL); + } return 3 << 16; } @@ -603,7 +606,12 @@ omap_otg_init(struct omap_usb_config *config) if (config->otg || config->register_dev) { syscon &= ~DEV_IDLE_EN; udc_device.dev.platform_data = config; - /* FIXME patch IRQ numbers for omap730 */ + /* IRQ numbers for omap7xx */ + if(cpu_is_omap7xx()) { + udc_resources[1].start = INT_7XX_USB_GENI; + udc_resources[2].start = INT_7XX_USB_NON_ISO; + udc_resources[3].start = INT_7XX_USB_ISO; + } status = platform_device_register(&udc_device); if (status) pr_debug("can't register UDC device, %d\n", status); |