Re: [PATCH v2] usb: dwc2: reset dwc2 core before dwc2_get_hwparams()

[Doug Anderson]

lyz,

On Tue, Aug 18, 2015 at 2:40 AM, Yunzhi Li <lyz@xxxxxxxxxxxxxx> wrote:
> We initiate dwc2 usb controller in BIOS, dwc2_core_reset() should
> be called before dwc2_get_hwparams() to reset core registers to
> default value. Without this the FIFO setting might be incorrect
> because calculating FIFO size need power-on value of
> GRXFSIZ/GNPTXFSIZ/HPTXFSIZ registers.
>
> This patch could avoid warnning massage like in rk3288 platform:
> [    2.074764] dwc2 ff580000.usb: 256 invalid for
> host_perio_tx_fifo_size. Check HW configuration.
>
> Signed-off-by: Yunzhi Li <lyz@xxxxxxxxxxxxxx>
>
> ---
>
>  drivers/usb/dwc2/core.c     | 2 +-
>  drivers/usb/dwc2/core.h     | 1 +
>  drivers/usb/dwc2/platform.c | 6 ++++++
>  3 files changed, 8 insertions(+), 1 deletion(-)

This seems reasonable to me.

Reviewed-by: Douglas Anderson <dianders@xxxxxxxxxxxx>
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