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mx51: efikamx: add otg support 

Ethernet hangs off OTG

Signed-off-by: Amit Kucheria <amit.kucheria@linaro.org>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Amit Kucheria 2010-10-07 03:58:25 +03:00 committed by Sascha Hauer
parent 088d01b00e
commit 81490fcdf4
1 changed files with 30 additions and 0 deletions
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30
arch/arm/mach-mx5/board-mx51_efikamx.c
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@ -37,6 +37,8 @@
#include "devices-imx51.h" #include "devices-imx51.h"
#include "devices.h" #include "devices.h"
#define MX51_USB_PLL_DIV_24_MHZ 0x01
static struct pad_desc mx51efikamx_pads[] = { static struct pad_desc mx51efikamx_pads[] = {
/* UART1 */ /* UART1 */
MX51_PAD_UART1_RXD__UART1_RXD, MX51_PAD_UART1_RXD__UART1_RXD,
@ -63,10 +65,38 @@ static inline void mxc_init_imx_uart(void)
} }
#endif /* SERIAL_IMX */ #endif /* SERIAL_IMX */
/* This function is board specific as the bit mask for the plldiv will also
* be different for other Freescale SoCs, thus a common bitmask is not
* possible and cannot get place in /plat-mxc/ehci.c.
*/
static int initialize_otg_port(struct platform_device *pdev)
{
u32 v;
void __iomem *usb_base;
void __iomem *usbother_base;
usb_base = ioremap(MX51_OTG_BASE_ADDR, SZ_4K);
usbother_base = (void __iomem *)(usb_base + MX5_USBOTHER_REGS_OFFSET);
/* Set the PHY clock to 19.2MHz */
v = __raw_readl(usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
v &= ~MX5_USB_UTMI_PHYCTRL1_PLLDIV_MASK;
v |= MX51_USB_PLL_DIV_24_MHZ;
__raw_writel(v, usbother_base + MXC_USB_PHY_CTR_FUNC2_OFFSET);
iounmap(usb_base);
return 0;
}
static struct mxc_usbh_platform_data dr_utmi_config = {
.init = initialize_otg_port,
.portsc = MXC_EHCI_UTMI_16BIT,
.flags = MXC_EHCI_INTERNAL_PHY,
};
static void __init mxc_board_init(void) static void __init mxc_board_init(void)
{ {
mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads, mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads,
ARRAY_SIZE(mx51efikamx_pads)); ARRAY_SIZE(mx51efikamx_pads));
mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config);
mxc_init_imx_uart(); mxc_init_imx_uart();
} }