On Wed, Nov 21, 2018 at 08:10:06AM +0000, Yoshihiro Shimoda wrote: > This patch modifies rcar_gen3_init_otg() procedure to follow Figure > 73.4 of "R-Car Series, 3rd Generation User's Manual: Hardware Rev.1.00". > > Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> > --- > This patch is based on the latest linux-phy / next branch > (commit id = 0eb86fa77f0f0c81631a030f10679a45c05df33a). > > drivers/phy/renesas/phy-rcar-gen3-usb2.c | 17 +++++++++++------ > 1 file changed, 11 insertions(+), 6 deletions(-) > > diff --git a/drivers/phy/renesas/phy-rcar-gen3-usb2.c b/drivers/phy/renesas/phy-rcar-gen3-usb2.c > index d0f412c..a9e53e8 100644 > --- a/drivers/phy/renesas/phy-rcar-gen3-usb2.c > +++ b/drivers/phy/renesas/phy-rcar-gen3-usb2.c > @@ -307,16 +307,21 @@ static void rcar_gen3_init_otg(struct rcar_gen3_chan *ch) > void __iomem *usb2_base = ch->base; > u32 val; > > + rcar_gen3_set_linectrl(ch, 0, 1); > + val = readl(usb2_base + USB2_LINECTRL1); > + writel(val | USB2_LINECTRL1_DPRPD_EN | USB2_LINECTRL1_DMRPD_EN, > + usb2_base + USB2_LINECTRL1); I am wondering if as well as the above USB2_LINECTRL1_DPRPD_EN should be set and USB2_LINECTRL1_DP_RPD should be cleared. > + > val = readl(usb2_base + USB2_VBCTRL); > writel(val | USB2_VBCTRL_DRVVBUSSEL, usb2_base + USB2_VBCTRL); > - writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA); > - rcar_gen3_control_otg_irq(ch, 1); > val = readl(usb2_base + USB2_ADPCTRL); > writel(val | USB2_ADPCTRL_IDPULLUP, usb2_base + USB2_ADPCTRL); > - val = readl(usb2_base + USB2_LINECTRL1); > - rcar_gen3_set_linectrl(ch, 0, 0); > - writel(val | USB2_LINECTRL1_DPRPD_EN | USB2_LINECTRL1_DMRPD_EN, > - usb2_base + USB2_LINECTRL1); > + > + msleep(20); > + > + writel(USB2_OBINT_BITS, usb2_base + USB2_OBINTSTA); I wonder if it is appropriate to write 0xffffffff to USB2_OBINTSTA and then USB2_OBINT_BITS to USB2_OBINTEN here. > + > + rcar_gen3_control_otg_irq(ch, 1); > > rcar_gen3_device_recognition(ch); > } > -- > 1.9.1 >
