From 72ba4cf52410c0426a299f2ac82acd38c27c8207 Mon Sep 17 00:00:00 2001 From: Thierry Reding Date: Thu, 14 Dec 2017 13:25:37 +0100 Subject: [PATCH] drm/tegra: dpaux: Keep reset defaults for hybrid pad parameters Keep the reset values for the common mode voltage, output driver impedance control and output driver current control parameters. This fixes errors seen during SCDC communication with HDMI sinks. Signed-off-by: Thierry Reding --- drivers/gpu/drm/tegra/dpaux.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/tegra/dpaux.c b/drivers/gpu/drm/tegra/dpaux.c index 312b93c0323c..d84e81ff36ad 100644 --- a/drivers/gpu/drm/tegra/dpaux.c +++ b/drivers/gpu/drm/tegra/dpaux.c @@ -322,6 +322,9 @@ static int tegra_dpaux_pad_config(struct tegra_dpaux *dpaux, unsigned function) case DPAUX_PADCTL_FUNC_I2C: value = DPAUX_HYBRID_PADCTL_I2C_SDA_INPUT_RCV | DPAUX_HYBRID_PADCTL_I2C_SCL_INPUT_RCV | + DPAUX_HYBRID_PADCTL_AUX_CMH(2) | + DPAUX_HYBRID_PADCTL_AUX_DRVZ(4) | + DPAUX_HYBRID_PADCTL_AUX_DRVI(0x18) | DPAUX_HYBRID_PADCTL_MODE_I2C; break; -- 2.30.2