From 8feb3680bd0363a8d784fa0d065e0a6cdc9e0cff Mon Sep 17 00:00:00 2001 From: Stephen Boyd Date: Wed, 28 Dec 2016 14:56:52 -0800 Subject: usb: chipidea: Add platform flag for wrapper phy management The ULPI phy on qcom platforms needs to be initialized and powered on after a USB reset and before we toggle the run/stop bit. Otherwise, the phy locks up and doesn't work properly. Therefore, add a flag to skip any phy power management in the core layer, leaving it up to the glue driver to manage. Acked-by: Peter Chen Cc: Greg Kroah-Hartman Signed-off-by: Stephen Boyd Signed-off-by: Peter Chen --- drivers/usb/chipidea/core.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'drivers/usb/chipidea') diff --git a/drivers/usb/chipidea/core.c b/drivers/usb/chipidea/core.c index 24859b4..b399326 100644 --- a/drivers/usb/chipidea/core.c +++ b/drivers/usb/chipidea/core.c @@ -361,6 +361,9 @@ static int _ci_usb_phy_init(struct ci_hdrc *ci) */ static void ci_usb_phy_exit(struct ci_hdrc *ci) { + if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL) + return; + if (ci->phy) { phy_power_off(ci->phy); phy_exit(ci->phy); @@ -379,6 +382,9 @@ static int ci_usb_phy_init(struct ci_hdrc *ci) { int ret; + if (ci->platdata->flags & CI_HDRC_OVERRIDE_PHY_CONTROL) + return 0; + switch (ci->platdata->phy_mode) { case USBPHY_INTERFACE_MODE_UTMI: case USBPHY_INTERFACE_MODE_UTMIW: -- cgit v1.1