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| author | Amit Kucheria <amit.kucheria@linaro.org> | 2010-10-07 03:58:25 +0300 |
|---|---|---|
| committer | Sascha Hauer <s.hauer@pengutronix.de> | 2010-10-11 16:29:17 +0200 |
| commit | 81490fcdf406f42fff9d9f57d541788f90242885 (patch) | |
| tree | bbbac6868c331ad367d7bc263e14d4f4e4ac240d | |
| parent | 088d01b00e335230bc51be6ae396babb9767e9ea (diff) | |
| download | linux-81490fcdf406f42fff9d9f57d541788f90242885.tar.bz2 | |
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>
| -rw-r--r-- | arch/arm/mach-mx5/board-mx51_efikamx.c | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/arch/arm/mach-mx5/board-mx51_efikamx.c b/arch/arm/mach-mx5/board-mx51_efikamx.c index 4c921fc31816..b00502acdc15 100644 --- a/arch/arm/mach-mx5/board-mx51_efikamx.c +++ b/arch/arm/mach-mx5/board-mx51_efikamx.c @@ -37,6 +37,8 @@ #include "devices-imx51.h" #include "devices.h" +#define MX51_USB_PLL_DIV_24_MHZ 0x01 + static struct pad_desc mx51efikamx_pads[] = { /* UART1 */ MX51_PAD_UART1_RXD__UART1_RXD, @@ -63,10 +65,38 @@ static inline void mxc_init_imx_uart(void) } #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) { mxc_iomux_v3_setup_multiple_pads(mx51efikamx_pads, ARRAY_SIZE(mx51efikamx_pads)); + mxc_register_device(&mxc_usbdr_host_device, &dr_utmi_config); mxc_init_imx_uart(); } |