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gpu: host1x: mipi: Clear calibration status

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Before starting a new calibration cycle, make sure to clear the current
status by writing a 1 to the various "calibration done" bits.

Signed-off-by: Thierry Reding <treding@nvidia.com>
This commit is contained in:
Thierry Reding 2015-04-08 17:17:44 +02:00
parent 8ed5c06232
commit 2ed264bf91
1 changed files with 4 additions and 0 deletions
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4
drivers/gpu/host1x/mipi.c
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@ -279,6 +279,10 @@ int tegra_mipi_calibrate(struct tegra_mipi_device *device)
tegra_mipi_writel(device->mipi, value, MIPI_CAL_CTRL); tegra_mipi_writel(device->mipi, value, MIPI_CAL_CTRL);
/* clear any pending status bits */
value = tegra_mipi_readl(device->mipi, MIPI_CAL_STATUS);
tegra_mipi_writel(device->mipi, value, MIPI_CAL_STATUS);
value = tegra_mipi_readl(device->mipi, MIPI_CAL_CTRL); value = tegra_mipi_readl(device->mipi, MIPI_CAL_CTRL);
value |= MIPI_CAL_CTRL_START; value |= MIPI_CAL_CTRL_START;
tegra_mipi_writel(device->mipi, value, MIPI_CAL_CTRL); tegra_mipi_writel(device->mipi, value, MIPI_CAL_CTRL);