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path: root/drivers/usb/renesas_usbhs/rcar3.c
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Diffstat (limited to 'drivers/usb/renesas_usbhs/rcar3.c')
-rw-r--r--drivers/usb/renesas_usbhs/rcar3.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/usb/renesas_usbhs/rcar3.c b/drivers/usb/renesas_usbhs/rcar3.c
index 1d70add926f0..d544b331c9f2 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"
@@ -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;
}