The pin muxing and clock definitions for the MUSB controller are not done through the same registers/pin mux options, so this explicitly configures the registers and pin-mux options for MUSB on AM3517-EVM
Signed-off-by: Adam Ford <[email protected]> diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c index 7f02743edbe4..e0c7ac2c87c1 100644 --- a/arch/arm/mach-omap2/pdata-quirks.c +++ b/arch/arm/mach-omap2/pdata-quirks.c @@ -258,9 +258,28 @@ static void __init omap3_sbc_t3517_legacy_init(void) omap3_sbc_t3517_wifi_init(); } +/* The pin muxing for AM3517 OTG isn't done through the normal means */ +static __init void am3517_evm_musb_init(void) +{ + u32 devconf2; + + /* + * Set up USB clock/mode in the DEVCONF2 register. + */ + devconf2 = omap_ctrl_readl(AM35XX_CONTROL_DEVCONF2); + + /* USB2.0 PHY reference clock is 13 MHz */ + devconf2 &= ~(CONF2_REFFREQ | CONF2_OTGMODE | CONF2_PHY_GPIOMODE); + devconf2 |= CONF2_REFFREQ_13MHZ | CONF2_SESENDEN | CONF2_VBDTCTEN + | CONF2_DATPOL; + + omap_ctrl_writel(devconf2, AM35XX_CONTROL_DEVCONF2); +} + static void __init am3517_evm_legacy_init(void) { am35xx_emac_reset(); + am3517_evm_musb_init(); } static struct platform_device omap3_rom_rng_device = { -- 2.17.1 -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
