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usb: dwc3: support USB 3.1 controllers

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The revision is different for these, add the additional check as in
xhci-dwc3 core_init code.

Equivalent upstream Linux patch:
690fb3718a70 ("usb: dwc3: Support Synopsys USB 3.1 IP")

Reviewed-by: Neil Armstrong <neil.armstrong@linaro.org>
Tested-by: Neil Armstrong <neil.armstrong@linaro.org> # on SM8550
Reviewed-by: Mattijs Korpershoek <mkorpershoek@baylibre.com>
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Caleb Connolly <caleb.connolly@linaro.org>
Reviewed-by: Marek Vasut <marex@denx.de>
This commit is contained in:
Caleb Connolly 2024-04-23 16:15:06 +02:00 committed by Marek Vasut
parent 7bd2559cb3
commit ef1e322f3e
1 changed files with 2 additions and 1 deletions
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3
drivers/usb/dwc3/core.c
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@ -594,7 +594,8 @@ static int dwc3_core_init(struct dwc3 *dwc)
reg = dwc3_readl(dwc->regs, DWC3_GSNPSID);
/* This should read as U3 followed by revision number */
if ((reg & DWC3_GSNPSID_MASK) != 0x55330000) {
if ((reg & DWC3_GSNPSID_MASK) != 0x55330000 &&
(reg & DWC3_GSNPSID_MASK) != 0x33310000) {
dev_err(dwc->dev, "this is not a DesignWare USB3 DRD Core\n");
ret = -ENODEV;
goto err0;