Hi
Il 23/giu/2014 23:26 "Felipe Balbi" balbi@ti.com ha scritto:
Newer AM437x silicon requires us to explicitly power up the USB2 PHY. By implementing usb_phy_power() we can achieve that.
Signed-off-by: Felipe Balbi balbi@ti.com
drivers/usb/phy/omap_usb_phy.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-)
diff --git a/drivers/usb/phy/omap_usb_phy.c
b/drivers/usb/phy/omap_usb_phy.c
index af46db2..0ed3e70 100644 --- a/drivers/usb/phy/omap_usb_phy.c +++ b/drivers/usb/phy/omap_usb_phy.c @@ -222,7 +222,22 @@ static void am437x_enable_usb2_phy2(struct omap_xhci
*omap)
void usb_phy_power(int on) {
return;
u32 val;/* USB1_CTRL */val = readl(0x44e10628);
Can you please describe 0x44e...
if (on) {/** these bits are re-used on AM437x to power up/down the
USB
* CM and OTG PHYs, if we don't toggle them, USB will not
be
* functional on newer silicon revisions*/val &= ~0x3;} else {val |= 0x3;
ditto
}writel(val, 0x44e10628);
ditto
} #endif /* CONFIG_AM437X_USB2PHY2_HOST */
Michael
-- 2.0.0.390.gcb682f8
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