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  • Kirill Smelkov
  • linux
  • Repository
  • linux
  • drivers
  • gpu
  • host1x
  • dev.c
Find file BlameHistoryPermalink
  • Mikko Perttunen's avatar
    gpu: host1x: Skip reset assert on Tegra186 · 1fa8d07a
    Mikko Perttunen authored Feb 22, 2024
    On Tegra186, secure world applications may need to access host1x
    during suspend/resume, and rely on the kernel to keep Host1x out
    of reset during the suspend cycle. As such, as a quirk,
    skip asserting Host1x's reset on Tegra186.
    
    We don't need to keep the clocks enabled, as BPMP ensures the clock
    stays on while Host1x is being used. On newer SoC's, the reset line
    is inaccessible, so there is no need for the quirk.
    
    Fixes: b7c00cdf
    
     ("gpu: host1x: Enable system suspend callbacks")
    Signed-off-by: default avatarMikko Perttunen <mperttunen@nvidia.com>
    Reviewed-by: default avatarJon Hunter <jonathanh@nvidia.com>
    Tested-by: default avatarJon Hunter <jonathanh@nvidia.com>
    Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
    Link: https://patchwork.freedesktop.org/patch/msgid/20240222010517.1573931-1-cyndis@kapsi.fi
    1fa8d07a
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