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

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On 3/24/20 5:34 PM, Dmitry Osipenko wrote:
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23.03.2020 20:52, Sowjanya Komatineni пишет:
+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.




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