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drm/tegra: hdmi - Disable LVDS mode

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Disable LVDS mode according to register documentation. It seems like
this has no effect on the operation of HDMI, but it's probably a good
idea to do this anyway.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2014-04-16 10:47:36 +02:00
parent 8c8282c04d
commit 9cbfc73e11
2 changed files with 10 additions and 1 deletions
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6
drivers/gpu/drm/tegra/hdmi.c
View file

@ -846,9 +846,13 @@ static int tegra_output_hdmi_enable(struct tegra_output *output)
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(0));
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_SEQ_INST(8));
value = 0x1c800;
value = tegra_hdmi_readl(hdmi, HDMI_NV_PDISP_SOR_CSTM);
value &= ~SOR_CSTM_ROTCLK(~0);
value |= SOR_CSTM_ROTCLK(2);
value |= SOR_CSTM_PLLDIV;
value &= ~SOR_CSTM_LVDS_ENABLE;
value &= ~SOR_CSTM_MODE_MASK;
value |= SOR_CSTM_MODE_TMDS;
tegra_hdmi_writel(hdmi, value, HDMI_NV_PDISP_SOR_CSTM);
/* start SOR */

5
drivers/gpu/drm/tegra/hdmi.h
View file

@ -190,6 +190,11 @@
#define HDMI_NV_PDISP_SOR_CSTM 0x5a
#define SOR_CSTM_ROTCLK(x) (((x) & 0xf) << 24)
#define SOR_CSTM_PLLDIV (1 << 21)
#define SOR_CSTM_LVDS_ENABLE (1 << 16)
#define SOR_CSTM_MODE_LVDS (0 << 12)
#define SOR_CSTM_MODE_TMDS (1 << 12)
#define SOR_CSTM_MODE_MASK (3 << 12)
#define HDMI_NV_PDISP_SOR_LVDS 0x5b
#define HDMI_NV_PDISP_SOR_CRCA 0x5c