On Mon, Feb 12, 2024, Frank Li wrote:
> Remove 'snps,host-vbus-glitches-quirk' and apply workaround
> unconditionally.
>
> It is safer to keep vbus disabled before handing over to xhci driver. So
> needn't 'snps,host-vbus-glitches' property to enable it and apply it
> unconditionally.
>
> Remove all host_vbus_glitches variable and call
> dwc3_power_off_all_roothub_ports() directly.
>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
> drivers/usb/dwc3/core.c | 3 ---
> drivers/usb/dwc3/core.h | 2 --
> drivers/usb/dwc3/host.c | 3 +--
> 3 files changed, 1 insertion(+), 7 deletions(-)
>
> diff --git a/drivers/usb/dwc3/core.c b/drivers/usb/dwc3/core.c
> index 3b68e8e45b8b9..3e55838c00014 100644
> --- a/drivers/usb/dwc3/core.c
> +++ b/drivers/usb/dwc3/core.c
> @@ -1626,9 +1626,6 @@ static void dwc3_get_properties(struct dwc3 *dwc)
> dwc->dis_split_quirk = device_property_read_bool(dev,
> "snps,dis-split-quirk");
>
> - dwc->host_vbus_glitches_quirk = device_property_read_bool(dev,
> - "snps,host-vbus-glitches-quirk");
> -
> dwc->lpm_nyet_threshold = lpm_nyet_threshold;
> dwc->tx_de_emphasis = tx_de_emphasis;
>
> diff --git a/drivers/usb/dwc3/core.h b/drivers/usb/dwc3/core.h
> index df544ec730d22..e3eea965e57bf 100644
> --- a/drivers/usb/dwc3/core.h
> +++ b/drivers/usb/dwc3/core.h
> @@ -1132,7 +1132,6 @@ struct dwc3_scratchpad_array {
> * 2 - No de-emphasis
> * 3 - Reserved
> * @dis_metastability_quirk: set to disable metastability quirk.
> - * @host_vbus_glitches_quirk: set to avoid vbus glitch during xhci reset.
> * @dis_split_quirk: set to disable split boundary.
> * @wakeup_configured: set if the device is configured for remote wakeup.
> * @suspended: set to track suspend event due to U3/L2.
> @@ -1354,7 +1353,6 @@ struct dwc3 {
> unsigned tx_de_emphasis:2;
>
> unsigned dis_metastability_quirk:1;
> - unsigned host_vbus_glitches_quirk:1;
>
> unsigned dis_split_quirk:1;
> unsigned async_callbacks:1;
> diff --git a/drivers/usb/dwc3/host.c b/drivers/usb/dwc3/host.c
> index ae189b7a4f8b8..98964e8dea1f7 100644
> --- a/drivers/usb/dwc3/host.c
> +++ b/drivers/usb/dwc3/host.c
> @@ -114,8 +114,7 @@ int dwc3_host_init(struct dwc3 *dwc)
> * Some platforms need to power off all Root hub ports immediately after DWC3 set to host
> * mode to avoid VBUS glitch happen when xhci get reset later.
> */
> - if (dwc->host_vbus_glitches_quirk)
> - dwc3_power_off_all_roothub_ports(dwc);
> + dwc3_power_off_all_roothub_ports(dwc);
>
> irq = dwc3_host_get_irq(dwc);
> if (irq < 0)
>
> --
> 2.34.1
>
Acked-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Thanks,
Thinh
ps: Was there a v1 of this series or did I drop it from my inbox?
