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drm/tegra: dpaux: Keep reset defaults for hybrid pad parameters

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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 <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2017-12-14 13:25:37 +01:00
parent 013e2b722a
commit 72ba4cf524
1 changed files with 3 additions and 0 deletions
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3
drivers/gpu/drm/tegra/dpaux.c
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@ -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;