diff options
Diffstat (limited to 'drivers/usb/renesas_usbhs/rcar3.c')
| -rw-r--r-- | drivers/usb/renesas_usbhs/rcar3.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c index 38b01f2ae..d544b331c 100644 --- a/drivers/usb/renesas_usbhs/rcar3.c +++ b/drivers/usb/renesas_usbhs/rcar3.c @@ -9,6 +9,7 @@ * */ +#include <linux/delay.h> #include <linux/io.h> #include "common.h" #include "rcar3.h" @@ -23,7 +24,7 @@ #define UGCTRL2_RESERVED_3 0x00000001 /* bit[3:0] should be B'0001 */ #define UGCTRL2_USB0SEL_OTG 0x00000030 -void usbhs_write32(struct usbhs_priv *priv, u32 reg, u32 data) +static void usbhs_write32(struct usbhs_priv *priv, u32 reg, u32 data) { iowrite32(data, priv->base + reg); } @@ -35,10 +36,13 @@ static int usbhs_rcar3_power_ctrl(struct platform_device *pdev, usbhs_write32(priv, UGCTRL2, UGCTRL2_RESERVED_3 | UGCTRL2_USB0SEL_OTG); - if (enable) + if (enable) { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, LPSTS_SUSPM); - else + /* The controller on R-Car Gen3 needs to wait up to 45 usec */ + udelay(45); + } else { usbhs_bset(priv, LPSTS, LPSTS_SUSPM, 0); + } return 0; } |