| Message ID | 20180625001233.9785-4-aford173@gmail.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
* Adam Ford <aford173@gmail.com> [180625 00:15]: > 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 <aford173@gmail.com> > > 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(); > } To me it seems you should do this with a simple drivers/phy driver. There might be already something similar that you can use, see the da and dm related drivers under drivers/phy/ti. Regards, Tony
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 = {
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 <aford173@gmail.com>