[PATCH 4/4] host1x: mipi: Set MIPI_CAL_BIAS_PAD_CFG1 register
From: Sean Paul <hidden>
Date: 2014-08-07 06:11:47
Also in:
linux-tegra
Subsystem:
drm drivers, drm drivers for nvidia tegra, the rest · Maintainers:
David Airlie, Simona Vetter, Thierry Reding, Mikko Perttunen, Linus Torvalds
Possibly related (same subject, not in this thread)
- 2014-08-07 · Re: [PATCH 4/4] host1x: mipi: Set MIPI_CAL_BIAS_PAD_CFG1 register · Thierry Reding <hidden>
During calibration, set the "internal reference level for drive pull-down" to the value specified in the tegra TRM. Signed-off-by: Sean Paul <redacted> --- drivers/gpu/host1x/mipi.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c
index 80578dc..84ed422 100644
--- a/drivers/gpu/host1x/mipi.c
+++ b/drivers/gpu/host1x/mipi.c@@ -235,6 +235,8 @@ 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, 0x20000, 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);
--
2.0.0