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    Subject[PATCH 5.18 0389/1095] drm/vc4: dsi: Register dsi0 as the correct vc4 encoder type
    Date
    From: Dave Stevenson <dave.stevenson@raspberrypi.com>

    [ Upstream commit 4d9273c978d4c1af15d7874c10c732ec83d444d0 ]

    vc4_dsi was registering both dsi0 and dsi1 as VC4_ENCODER_TYPE_DSI1
    which seemed to work OK for a single DSI display, but fails
    if there are two DSI displays connected.

    Update to register the correct type.

    Fixes: 4078f5757144 ("drm/vc4: Add DSI driver")
    Signed-off-by: Dave Stevenson <dave.stevenson@raspberrypi.com>
    Link: https://lore.kernel.org/r/20220613144800.326124-15-maxime@cerno.tech
    Signed-off-by: Maxime Ripard <maxime@cerno.tech>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/gpu/drm/vc4/vc4_dsi.c | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/drivers/gpu/drm/vc4/vc4_dsi.c b/drivers/gpu/drm/vc4/vc4_dsi.c
    index 81a6c4e9576d..97a258c934af 100644
    --- a/drivers/gpu/drm/vc4/vc4_dsi.c
    +++ b/drivers/gpu/drm/vc4/vc4_dsi.c
    @@ -1518,7 +1518,8 @@ static int vc4_dsi_bind(struct device *dev, struct device *master, void *data)
    return -ENOMEM;

    INIT_LIST_HEAD(&dsi->bridge_chain);
    - vc4_dsi_encoder->base.type = VC4_ENCODER_TYPE_DSI1;
    + vc4_dsi_encoder->base.type = dsi->variant->port ?
    + VC4_ENCODER_TYPE_DSI1 : VC4_ENCODER_TYPE_DSI0;
    vc4_dsi_encoder->dsi = dsi;
    dsi->encoder = &vc4_dsi_encoder->base.base;

    --
    2.35.1


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