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usb: dwc3: dwc3-octeon: Dump control register on clock init failure

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It might be interesting to know control register value in case
clock fails to enable.

Signed-off-by: Ladislav Michl <ladis@linux-mips.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Thinh Nguyen <Thinh.Nguyen@synopsys.com>
Link: https://lore.kernel.org/r/ZMd/5OX9szEMnhQH@lenoch
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Ladislav Michl 2023-07-31 11:33:24 +02:00 committed by Greg Kroah-Hartman
parent dc0092ce24
commit 540264746d
1 changed files with 2 additions and 2 deletions
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4
drivers/usb/dwc3/dwc3-octeon.c
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@ -299,8 +299,8 @@ static int dwc3_octeon_setup(struct dwc3_octeon *octeon,
val = dwc3_octeon_readq(uctl_ctl_reg);
if ((div != FIELD_GET(USBDRD_UCTL_CTL_H_CLKDIV_SEL, val)) ||
(!(FIELD_GET(USBDRD_UCTL_CTL_H_CLK_EN, val)))) {
dev_err(dev, "dwc3 controller clock init failure.\n");
return -EINVAL;
dev_err(dev, "clock init failure (UCTL_CTL=%016llx)\n", val);
return -EINVAL;
}
/* Step 4c: Deassert the controller clock divider reset. */