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Message-ID: <63a12a83-8ea8-40de-d086-9971c93d57f6@ti.com> Date: Wed, 17 Apr 2019 11:02:58 +0530 From: Kishon Vijay Abraham I <kishon@...com> To: Paul Kocialkowski <paul.kocialkowski@...tlin.com>, <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>, <linux-sunxi@...glegroups.com> CC: Maxime Ripard <maxime.ripard@...tlin.com>, Chen-Yu Tsai <wens@...e.org>, Thomas Petazzoni <thomas.petazzoni@...tlin.com>, Jagan Teki <jagan@...nedev.com>, Hans de Goede <hdegoede@...hat.com> Subject: Re: [PATCH] phy: sun4i-usb: Make sure to disable PHY0 passby for peripheral mode On 15/04/19 4:47 PM, Paul Kocialkowski wrote: > Hi, > > Le jeudi 14 mars 2019 à 14:05 +0100, Paul Kocialkowski a écrit : >> On platforms where the MUSB and HCI controllers share PHY0, PHY passby >> is required when using the HCI controller with the PHY, but it must be >> disabled when the MUSB controller is used instead. >> >> Without this, PHY0 passby is always enabled, which results in broken >> peripheral mode on such platforms (e.g. H3/H5). >> >> Fixes: ba4bdc9e1dc0 ("PHY: sunxi: Add driver for sunxi usb phy") > > Does anyone have feedback about this? I was hoping to get it merged > rather soon since it pretty much fixes USB gadget on H3/R40/V3/V3s. merged now, thanks. -Kishon > > Cheers, > > Paul > >> Signed-off-by: Paul Kocialkowski <paul.kocialkowski@...tlin.com> >> --- >> drivers/phy/allwinner/phy-sun4i-usb.c | 4 ++++ >> 1 file changed, 4 insertions(+) >> >> diff --git a/drivers/phy/allwinner/phy-sun4i-usb.c b/drivers/phy/allwinner/phy-sun4i-usb.c >> index 5163097b43df..7b23920e0068 100644 >> --- a/drivers/phy/allwinner/phy-sun4i-usb.c >> +++ b/drivers/phy/allwinner/phy-sun4i-usb.c >> @@ -551,6 +551,7 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) >> struct sun4i_usb_phy_data *data = >> container_of(work, struct sun4i_usb_phy_data, detect.work); >> struct phy *phy0 = data->phys[0].phy; >> + struct sun4i_usb_phy *phy = phy_get_drvdata(phy0); >> bool force_session_end, id_notify = false, vbus_notify = false; >> int id_det, vbus_det; >> >> @@ -607,6 +608,9 @@ static void sun4i_usb_phy0_id_vbus_det_scan(struct work_struct *work) >> mutex_unlock(&phy0->mutex); >> } >> >> + /* Enable PHY0 passby for host mode only. */ >> + sun4i_usb_phy_passby(phy, !id_det); >> + >> /* Re-route PHY0 if necessary */ >> if (data->cfg->phy0_dual_route) >> sun4i_usb_phy0_reroute(data, id_det);
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