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    Subject[PATCH 17/27] drm/rockchip: dw-mipi-dsi: ensure PHY is reset
    Date
    Also don't power up the DSI host at this point since this is not
    necessary in order to configure the PHY and we do so later when
    selecting video or command mode.

    Signed-off-by: John Keeping <john@metanate.com>
    ---
    drivers/gpu/drm/rockchip/dw-mipi-dsi.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    diff --git a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
    index e621b66b9617..e310c3d81bb8 100644
    --- a/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
    +++ b/drivers/gpu/drm/rockchip/dw-mipi-dsi.c
    @@ -398,7 +398,10 @@ static int dw_mipi_dsi_phy_init(struct dw_mipi_dsi *dsi)
    return testdin;
    }

    - dsi_write(dsi, DSI_PWR_UP, POWERUP);
    + /* Start by clearing PHY state */
    + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR);
    + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_TESTCLR);
    + dsi_write(dsi, DSI_PHY_TST_CTRL0, PHY_UNTESTCLR);

    dw_mipi_dsi_phy_write(dsi, 0x10, BYPASS_VCO_RANGE |
    VCO_RANGE_CON_SEL(vco) |
    --
    2.10.0.278.g4f427b1.dirty
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