Re: [RFC PATCH v5 6/9] media: tegra: Add Tegra210 Video input driver

[Sowjanya Komatineni]

On 3/24/20 5:34 PM, Dmitry Osipenko wrote:
> External email: Use caution opening links or attachments
>
>
> 23.03.2020 20:52, Sowjanya Komatineni ÐÐÑÐÑ:
> > +static void tegra_channel_vi_soft_reset(struct tegra_vi_channel *chan)
> > +{
> > +     /* disable clock gating to enable continuous clock */
> > +     tegra_vi_write(chan, TEGRA_VI_CFG_CG_CTRL, 0);
> > +     /*
> > +      * Soft reset memory client interface, pixel format logic, sensor
> > +      * control logic, and a shadow copy logic to bring VI to clean state.
> > +      */
> > +     vi_csi_write(chan, TEGRA_VI_CSI_SW_RESET, 0xf);
> > +     usleep_range(100, 200);
> > +     vi_csi_write(chan, TEGRA_VI_CSI_SW_RESET, 0x0);
> Is it safe to reset MCCIF without blocking and flushing memory requests
> at first?
Yes to bring VI to clean state on errors its recommended by HW design team.