On Wed, Aug 15, 2018 at 6:13 PM, Marek Vasut <ma...@denx.de> wrote: > On 08/15/2018 08:01 PM, Ley Foon Tan wrote: >> Add code to reset all reset signals as in usb DT node. A reset property >> is an optional feature, so only print out a warning and do not fail if a >> reset property is not present. >> >> If a reset property is discovered, then use it to deassert, thus >> bringing the IP out of reset. >> >> Signed-off-by: Ley Foon Tan <ley.foon....@intel.com> >> --- >> drivers/usb/host/dwc2.c | 17 +++++++++++++++++ >> 1 file changed, 17 insertions(+) >> >> diff --git a/drivers/usb/host/dwc2.c b/drivers/usb/host/dwc2.c >> index cbe065b..b77e0c6 100644 >> --- a/drivers/usb/host/dwc2.c >> +++ b/drivers/usb/host/dwc2.c >> @@ -15,6 +15,7 @@ >> #include <wait_bit.h> >> #include <asm/io.h> >> #include <power/regulator.h> >> +#include <reset.h> >> >> #include "dwc2.h" >> >> @@ -1124,12 +1125,28 @@ int _submit_int_msg(struct dwc2_priv *priv, struct >> usb_device *dev, >> } >> } >> >> +static void dwc2_reset(struct udevice *dev) >> +{ >> + struct reset_ctl_bulk reset_bulk; >> + int ret; >> + >> + ret = reset_get_bulk(dev, &reset_bulk); >> + if (ret) { >> + dev_warn(dev, "Can't get reset: %d\n", ret); >> + return; >> + } >> + >> + reset_deassert_bulk(&reset_bulk); >> +} >> + >> static int dwc2_init_common(struct udevice *dev, struct dwc2_priv *priv) >> { >> struct dwc2_core_regs *regs = priv->regs; >> uint32_t snpsid; >> int i, j; >> >> + dwc2_reset(dev); >> + >> snpsid = readl(®s->gsnpsid); >> dev_info(dev, "Core Release: %x.%03x\n", >> snpsid >> 12 & 0xf, snpsid & 0xfff); >> > > .remove() should assert the reset again. Okay. Will add it.
Regards Ley Foon _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de https://lists.denx.de/listinfo/u-boot