diff options
Diffstat (limited to 'src/soc/nvidia/tegra124/dp.c')
| -rw-r--r-- | src/soc/nvidia/tegra124/dp.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/src/soc/nvidia/tegra124/dp.c b/src/soc/nvidia/tegra124/dp.c index cc341b898f..ad6c0da75c 100644 --- a/src/soc/nvidia/tegra124/dp.c +++ b/src/soc/nvidia/tegra124/dp.c @@ -618,6 +618,22 @@ static int tegra_dc_dp_init_link_cfg( return 0; } +static int tegra_dc_dp_set_assr(struct tegra_dc_dp_data *dp, int ena) +{ + int ret; + + u8 dpcd_data = ena ? + NV_DPCD_EDP_CONFIG_SET_ASC_RESET_ENABLE : + NV_DPCD_EDP_CONFIG_SET_ASC_RESET_DISABLE; + + CHECK_RET(tegra_dc_dp_dpcd_write(dp, NV_DPCD_EDP_CONFIG_SET, + dpcd_data)); + + /* Also reset the scrambler to 0xfffe */ + tegra_dc_sor_set_internal_panel(&dp->sor, ena); + return 0; +} + static void tegra_dp_update_config(struct tegra_dc_dp_data *dp, struct soc_nvidia_tegra124_config *config) { @@ -738,6 +754,12 @@ void dp_enable(void * _dp) goto error_enable; } + /* enable ASSR */ + if (tegra_dc_dp_set_assr(dp, dp->link_cfg.scramble_ena)) { + printk(BIOS_ERR, "dp: failed to enable ASSR\n"); + goto error_enable; + } + tegra_dc_sor_enable_dp(&dp->sor); tegra_dc_sor_set_panel_power(&dp->sor, 1); |