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    Subject[PATCH v4 11/11] drm/tegra: Reset the SOR on probe
    Date
    As there isn't a way for the firmware on the Nyan chromebooks to hand
    over the display to the kernel.

    Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com>
    ---
    drivers/gpu/drm/tegra/sor.c | 14 ++++++++++++++
    1 file changed, 14 insertions(+)

    diff --git a/drivers/gpu/drm/tegra/sor.c b/drivers/gpu/drm/tegra/sor.c
    index 2afe478..e6caacc 100644
    --- a/drivers/gpu/drm/tegra/sor.c
    +++ b/drivers/gpu/drm/tegra/sor.c
    @@ -1458,6 +1458,20 @@ static int tegra_sor_probe(struct platform_device *pdev)

    mutex_init(&sor->lock);

    + err = reset_control_assert(sor->rst);
    + if (err < 0) {
    + dev_err(&pdev->dev, "failed to assert SOR reset: %d\n", err);
    + return err;
    + }
    +
    + msleep(20);
    +
    + err = reset_control_deassert(sor->rst);
    + if (err < 0) {
    + dev_err(&pdev->dev, "failed to deassert SOR reset: %d\n", err);
    + return err;
    + }
    +
    err = host1x_client_register(&sor->client);
    if (err < 0) {
    dev_err(&pdev->dev, "failed to register host1x client: %d\n",
    --
    1.9.3


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