diff options
| author | Frank Li <Frank.Li@nxp.com> | 2024-02-12 11:19:08 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-02-17 16:44:10 +0100 |
| commit | a6ba1e453174f11e25dd3cdcf289b4b34ddfa28d (patch) | |
| tree | 8af8c4cd332258ffa83f71a8f6c19fc41f73db8b /drivers/usb | |
| parent | 8c1b6b74d464ecdc6f64167e7fc555ec634f5d47 (diff) | |
| download | linux-a6ba1e453174f11e25dd3cdcf289b4b34ddfa28d.tar.gz | |
usb: dwc3: apply snps,host-vbus-glitches workaround unconditionally
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@nxp.com>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Acked-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20240212-vbus-glitch-v2-2-d71b73a82de1@nxp.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/usb')
| -rw-r--r-- | drivers/usb/dwc3/core.c | 3 | ||||
| -rw-r--r-- | drivers/usb/dwc3/core.h | 2 | ||||
| -rw-r--r-- | drivers/usb/dwc3/host.c | 3 |
3 files changed, 1 insertions, 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 4e628a9a60a5c..aeb2c1f4c7c70 100644 --- a/drivers/usb/dwc3/core.h +++ b/drivers/usb/dwc3/core.h @@ -1133,7 +1133,6 @@ 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. @@ -1355,7 +1354,6 @@ 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 4e6239d3a0ac2..5a5cb6ce9946d 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) |