The DDC bus uses this for it's supply, enable it so EDID can be read. This eliminates I2C read timeouts on Venice2 and EDID can be verified with i2cdump. Signed-off-by: Dylan Reid <dgreid@xxxxxxxxxxxx> --- drivers/gpu/drm/tegra/hdmi.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/drivers/gpu/drm/tegra/hdmi.c b/drivers/gpu/drm/tegra/hdmi.c index 6928015..3d3cd7e 100644 --- a/drivers/gpu/drm/tegra/hdmi.c +++ b/drivers/gpu/drm/tegra/hdmi.c @@ -44,6 +44,7 @@ struct tegra_hdmi { struct regulator *vdd; struct regulator *pll; + struct regulator *hdmi_5v; void __iomem *regs; unsigned int irq; @@ -1263,6 +1264,13 @@ static int tegra_hdmi_init(struct host1x_client *client) return err; } + err = regulator_enable(hdmi->hdmi_5v); + if (err < 0) { + dev_err(client->dev, "failed to enable HDMI 5V regulator: %d\n", + err); + return err; + } + hdmi->output.type = TEGRA_OUTPUT_HDMI; hdmi->output.dev = client->dev; hdmi->output.ops = &hdmi_ops; @@ -1307,6 +1315,7 @@ static int tegra_hdmi_exit(struct host1x_client *client) } regulator_disable(hdmi->vdd); + regulator_disable(hdmi->hdmi_5v); return 0; } @@ -1411,6 +1420,12 @@ static int tegra_hdmi_probe(struct platform_device *pdev) return PTR_ERR(hdmi->pll); } + hdmi->hdmi_5v = devm_regulator_get(&pdev->dev, "hdmi"); + if (IS_ERR(hdmi->hdmi_5v)) { + dev_err(&pdev->dev, "failed to get HDMI 5V regulator\n"); + return PTR_ERR(hdmi->hdmi_5v); + } + hdmi->output.dev = &pdev->dev; err = tegra_output_probe(&hdmi->output); -- 1.8.1.3.605.g02339dd -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html