Fix D-PHY HS Trail setting on Tegra. It is found that HS Trail is off -12% during compliance testing
Signed-off-by: David Ung <[email protected]> --- drivers/gpu/drm/tegra/dsi.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/gpu/drm/tegra/dsi.c b/drivers/gpu/drm/tegra/dsi.c index f787445..34fb82d 100644 --- a/drivers/gpu/drm/tegra/dsi.c +++ b/drivers/gpu/drm/tegra/dsi.c @@ -335,6 +335,12 @@ static int tegra_dsi_set_phy_timing(struct tegra_dsi *dsi) if (err < 0) return err; + /* + * Tegra DSI progamming guide requires additional adjustments + * to HS trail for compliance. + */ + timing->hstrail += 3 * period * 8; + err = mipi_dphy_timing_validate(&timing, period); if (err < 0) { dev_err(dsi->dev, "failed to validate D-PHY timing: %d\n", err); -- 1.8.1.5 -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
