On Wed, Sep 04, 2024, Frank Li wrote:
> Add 2 software manage quirk properties (xhci-missing-cas-quirk and
> xhci-skip-phy-init-quirk) for xhci host.
>
> dwc3 driver have PHY management to cover both device and host mode, so add
> xhci-skip-phy-init-quirk to skip PHY management from HCD core.
>
> Cold Attach Status (CAS) bit can't be set at i.MX8MP after resume from
> suspend state. So set xhci-missing-cas-quirk.
>
> Signed-off-by: Frank Li <Frank.Li@xxxxxxx>
> ---
> Change from v2 to v3
> - rework commit message to descript why need set quirk.
>
> Change from v1 to v2
> - use {0}
> ---
> drivers/usb/dwc3/dwc3-imx8mp.c | 18 ++++++++++++++++++
> 1 file changed, 18 insertions(+)
>
> diff --git a/drivers/usb/dwc3/dwc3-imx8mp.c b/drivers/usb/dwc3/dwc3-imx8mp.c
> index 392fa1232788c..bd6953246f42e 100644
> --- a/drivers/usb/dwc3/dwc3-imx8mp.c
> +++ b/drivers/usb/dwc3/dwc3-imx8mp.c
> @@ -144,6 +144,17 @@ static irqreturn_t dwc3_imx8mp_interrupt(int irq, void *_dwc3_imx)
> return IRQ_HANDLED;
> }
>
> +static int dwc3_imx8mp_set_software_node(struct device *dev)
> +{
> + struct property_entry props[3] = { 0 };
> + int prop_idx = 0;
> +
> + props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-missing-cas-quirk");
> + props[prop_idx++] = PROPERTY_ENTRY_BOOL("xhci-skip-phy-init-quirk");
> +
> + return device_create_managed_software_node(dev, props, NULL);
> +}
> +
> static int dwc3_imx8mp_probe(struct platform_device *pdev)
> {
> struct device *dev = &pdev->dev;
> @@ -226,6 +237,13 @@ static int dwc3_imx8mp_probe(struct platform_device *pdev)
> goto disable_rpm;
> }
>
> + err = dwc3_imx8mp_set_software_node(dev);
> + if (err) {
> + err = -ENODEV;
> + dev_err(dev, "failed to create software node\n");
> + goto disable_rpm;
> + }
> +
> err = of_platform_populate(node, NULL, NULL, dev);
> if (err) {
> dev_err(&pdev->dev, "failed to create dwc3 core\n");
>
> --
> 2.34.1
>
This doesn't look like it's based on top of Greg's usb-testing branch.
But I think it should still apply, please double check.
Regardless,
Acked-by: Thinh Nguyen <Thinh.Nguyen@xxxxxxxxxxxx>
Thanks,
Thinh
