diff options
Diffstat (limited to 'src/soc/nvidia/tegra124/sor.c')
| -rw-r--r-- | src/soc/nvidia/tegra124/sor.c | 48 |
1 files changed, 25 insertions, 23 deletions
diff --git a/src/soc/nvidia/tegra124/sor.c b/src/soc/nvidia/tegra124/sor.c index 1f9df6ce06..3eaae0e8f9 100644 --- a/src/soc/nvidia/tegra124/sor.c +++ b/src/soc/nvidia/tegra124/sor.c @@ -832,11 +832,34 @@ void tegra_dc_sor_set_lane_parm(struct tegra_dc_sor_data *sor, 0xf0, 0x0); } -void tegra_dc_sor_power_down_unused_lanes(struct tegra_dc_sor_data *sor) +void tegra_dc_sor_set_voltage_swing(struct tegra_dc_sor_data *sor) { - u32 pad_ctrl = 0; u32 drive_current = 0; u32 pre_emphasis = 0; + + /* Set to a known-good pre-calibrated setting */ + switch (sor->link_cfg->link_bw) { + case SOR_LINK_SPEED_G1_62: + case SOR_LINK_SPEED_G2_7: + drive_current = 0x13131313; + pre_emphasis = 0; + break; + case SOR_LINK_SPEED_G5_4: + printk(BIOS_WARNING, "T124 does not support 5.4G link clock.\n"); + default: + printk(BIOS_WARNING, "Invalid sor link bandwidth: %d\n", + sor->link_cfg->link_bw); + return; + } + + tegra_sor_writel(sor, NV_SOR_LANE_DRIVE_CURRENT(sor->portnum), + drive_current); + tegra_sor_writel(sor, NV_SOR_PR(sor->portnum), pre_emphasis); +} + +void tegra_dc_sor_power_down_unused_lanes(struct tegra_dc_sor_data *sor) +{ + u32 pad_ctrl = 0; int err = 0; switch (sor->link_cfg->lane_count) { @@ -873,27 +896,6 @@ void tegra_dc_sor_power_down_unused_lanes(struct tegra_dc_sor_data *sor) "Wait for lane power down failed: %d\n", err); return; } - - /* Set to a known-good pre-calibrated setting */ - switch (sor->link_cfg->link_bw) { - case SOR_LINK_SPEED_G1_62: - case SOR_LINK_SPEED_G2_7: - drive_current = 0x13131313; - pre_emphasis = 0; - break; - case SOR_LINK_SPEED_G5_4: - drive_current = 0x19191919; - pre_emphasis = 0x09090909; - break; - default: - printk(BIOS_ERR, "Invalid sor link bandwidth: %d\n", - sor->link_cfg->link_bw); - return; - } - - tegra_sor_writel(sor, NV_SOR_LANE_DRIVE_CURRENT(sor->portnum), - drive_current); - tegra_sor_writel(sor, NV_SOR_PR(sor->portnum), pre_emphasis); } void tegra_sor_precharge_lanes(struct tegra_dc_sor_data *sor) |