Commit 109af213 authored Apr 13, 2016 by Arumuga Durai A

usb: phy-msm: Avoid SE1 linestate after enabling DCD



During PHY based charger detection, SE1 linestate may occur
as driver enables current source first and then DP pull-down.
This may affect charger detection.Apply DM pulldown before
enabling current source on DP to  avoid SE1 state.

Change-Id: I01cb4ad4b97145c12d211c6b2c9035f6a9953d9b
Signed-off-by: Arumuga Durai A <cadurai@codeaurora.org>

parent fd64e02a

drivers/usb/phy/phy-msm-usb.c

+2 −2

Original line number	Diff line number	Diff line
		@@ -2403,10 +2403,10 @@ static void msm_chg_enable_dcd(struct msm_otg *motg)
		* may be incorrectly interpreted. Also
		* BC1.2 compliance testers expect Rdm_down
		* to enabled during DCD. Enable Rdm_down
		* explicitly after enabling the DCD.
		* explicitly before enabling the DCD.
		*/
		ulpi_write(phy, 0x10, 0x85);
		ulpi_write(phy, 0x04, 0x0B);
		ulpi_write(phy, 0x10, 0x85);
		break;
		default:
		break;