On Thu, Dec 17, 2020 at 04:45:03PM +0300, Dmitry Osipenko wrote:
> 17.12.2020 16:41, Thierry Reding пишет:
> > On Thu, Dec 17, 2020 at 12:40:05PM +0300, Dmitry Osipenko wrote:
> >> Tegra PHY driver now supports waking up controller from a low power mode.
> >> Enable runtime PM in order to put controller into the LPM during idle.
> >>
> >> Tested-by: Matt Merhar <mattmerhar@xxxxxxxxxxxxxx>
> >> Tested-by: Nicolas Chauvet <kwizart@xxxxxxxxx>
> >> Tested-by: Peter Geis <pgwipeout@xxxxxxxxx>
> >> Tested-by: Ion Agorria <ion@xxxxxxxxxxx>
> >> Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx>
> >> ---
> >> drivers/usb/chipidea/ci_hdrc_tegra.c | 13 ++++++++++---
> >> 1 file changed, 10 insertions(+), 3 deletions(-)
> >>
> >> diff --git a/drivers/usb/chipidea/ci_hdrc_tegra.c b/drivers/usb/chipidea/ci_hdrc_tegra.c
> >> index 5fccdeeefc64..655671159511 100644
> >> --- a/drivers/usb/chipidea/ci_hdrc_tegra.c
> >> +++ b/drivers/usb/chipidea/ci_hdrc_tegra.c
> >> @@ -38,21 +38,24 @@ struct tegra_usb_soc_info {
> >>
> >> static const struct tegra_usb_soc_info tegra20_ehci_soc_info = {
> >> .flags = CI_HDRC_REQUIRES_ALIGNED_DMA |
> >> - CI_HDRC_OVERRIDE_PHY_CONTROL,
> >> + CI_HDRC_OVERRIDE_PHY_CONTROL |
> >> + CI_HDRC_SUPPORTS_RUNTIME_PM,
> >> .dr_mode = USB_DR_MODE_HOST,
> >> .txfifothresh = 10,
> >> };
> >>
> >> static const struct tegra_usb_soc_info tegra30_ehci_soc_info = {
> >> .flags = CI_HDRC_REQUIRES_ALIGNED_DMA |
> >> - CI_HDRC_OVERRIDE_PHY_CONTROL,
> >> + CI_HDRC_OVERRIDE_PHY_CONTROL |
> >> + CI_HDRC_SUPPORTS_RUNTIME_PM,
> >> .dr_mode = USB_DR_MODE_HOST,
> >> .txfifothresh = 16,
> >> };
> >>
> >> static const struct tegra_usb_soc_info tegra_udc_soc_info = {
> >> .flags = CI_HDRC_REQUIRES_ALIGNED_DMA |
> >> - CI_HDRC_OVERRIDE_PHY_CONTROL,
> >> + CI_HDRC_OVERRIDE_PHY_CONTROL |
> >> + CI_HDRC_SUPPORTS_RUNTIME_PM,
> >> .dr_mode = USB_DR_MODE_UNKNOWN,
> >> };
> >>
> >> @@ -323,6 +326,10 @@ static int tegra_usb_probe(struct platform_device *pdev)
> >> usb->data.hub_control = tegra_ehci_hub_control;
> >> usb->data.notify_event = tegra_usb_notify_event;
> >>
> >> + /* Tegra PHY driver currently doesn't support LPM for ULPI */
> >> + if (of_usb_get_phy_mode(pdev->dev.of_node) == USBPHY_INTERFACE_MODE_ULPI)
> >> + usb->data.flags &= ~CI_HDRC_SUPPORTS_RUNTIME_PM;
> >> +
> >
> > Does this prevent the wakeup_enabled from being set for ULPI PHYs?
>
> Yes
Okay, it should be fine then to keep that WARN_ONCE in that prior patch
since we should really only get there if there's something seriously
wrong.
Thierry
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