[02/12] USB: chipidea: delay 2ms before read ID status at probe time
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Message ID 1342076512-19207-3-git-send-email-richard.zhao@freescale.com
State New, archived
Headers show

Commit Message

Richard Zhao July 12, 2012, 7:01 a.m. UTC
The ID pin needs 1ms debounce time, event at probe time. We delay 2ms
for safe.

Signed-off-by: Richard Zhao <richard.zhao@freescale.com>
---
 drivers/usb/chipidea/core.c |    2 ++
 1 file changed, 2 insertions(+)

Patch
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diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c
index 1083585..3c3ed77 100644
--- a/drivers/usb/chipidea/core.c
+++ b/drivers/usb/chipidea/core.c
@@ -462,6 +462,8 @@  static int __devinit ci_hdrc_probe(struct platform_device *pdev)
 
 	if (ci->roles[CI_ROLE_HOST] && ci->roles[CI_ROLE_GADGET]) {
 		ci->is_otg = true;
+		/* ID pin needs 1ms debouce time, we delay 2ms for safe */
+		mdelay(2);
 		ci->role = ci_otg_role(ci);
 	} else {
 		ci->role = ci->roles[CI_ROLE_HOST]