• Jon Hunter's avatar
    drm/tegra: dsi: Prepare for generic PM domain support · 64230aa0
    Jon Hunter authored
    The DSI driver for Tegra requires the SOR power partition to be enabled.
    Now that Tegra supports the generic PM domain framework we manage the
    SOR power partition via this framework. However, the sequence for
    gating/ungating the SOR power partition requires that the DSI reset is
    asserted/de-asserted at the time the SOR power partition is
    gated/ungated, respectively. Now that the reset control core assumes
    that resets are exclusive, the Tegra generic PM domain code and the DSI
    driver cannot request the same reset unless we mark the reset as shared.
    Sharing resets will not work in this case because we cannot guarantee
    that the reset will be asserted/de-asserted at the appropriate time.
    Therefore, given that the Tegra generic PM domain code will handle the
    resets, do not request the reset in the DSI driver if the DSI device has
    a PM domain associated.
    Signed-off-by: default avatarJon Hunter <jonathanh@nvidia.com>
    Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
    64230aa0
dsi.c 40.9 KB