gpu: host1x: mipi: Set MIPI_CAL_BIAS_PAD_CFG1 register

During calibration, sets the "internal reference level for drive pull-
down" to the value specified in the Tegra TRM.

Signed-off-by: Sean Paul <seanpaul@chromium.org>
Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Sean Paul 2014-09-10 10:52:05 -04:00 коммит произвёл Thierry Reding
Родитель 08a15cc34d
Коммит b298e98ef6
1 изменённых файлов: 4 добавлений и 0 удалений

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@ -72,6 +72,7 @@
#define MIPI_CAL_BIAS_PAD_E_VCLAMP_REF (1 << 0)
#define MIPI_CAL_BIAS_PAD_CFG1 0x17
#define MIPI_CAL_BIAS_PAD_DRV_DN_REF(x) (((x) & 0x7) << 16)
#define MIPI_CAL_BIAS_PAD_CFG2 0x18
#define MIPI_CAL_BIAS_PAD_PDVREG (1 << 1)
@ -203,6 +204,9 @@ int tegra_mipi_calibrate(struct tegra_mipi_device *device)
value |= MIPI_CAL_BIAS_PAD_E_VCLAMP_REF;
tegra_mipi_writel(device->mipi, value, MIPI_CAL_BIAS_PAD_CFG0);
tegra_mipi_writel(device->mipi, MIPI_CAL_BIAS_PAD_DRV_DN_REF(2),
MIPI_CAL_BIAS_PAD_CFG1);
value = tegra_mipi_readl(device->mipi, MIPI_CAL_BIAS_PAD_CFG2);
value &= ~MIPI_CAL_BIAS_PAD_PDVREG;
tegra_mipi_writel(device->mipi, value, MIPI_CAL_BIAS_PAD_CFG2);