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| author | Thierry Reding <treding@nvidia.com> | 2015-04-08 17:17:44 +0200 |
|---|---|---|
| committer | Thierry Reding <treding@nvidia.com> | 2015-08-13 13:47:17 +0200 |
| commit | 2ed264bf916b689fe0c71ac726995f0876062667 (patch) | |
| tree | 897514256cff6c3caa449675fb4098f25de69fd4 /drivers/gpu/host1x | |
| parent | 8ed5c0623272663783e052123fea02651464a0a5 (diff) | |
| download | linux-2ed264bf916b689fe0c71ac726995f0876062667.tar.gz linux-2ed264bf916b689fe0c71ac726995f0876062667.tar.bz2 linux-2ed264bf916b689fe0c71ac726995f0876062667.zip | |
gpu: host1x: mipi: Clear calibration status
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>
Diffstat (limited to 'drivers/gpu/host1x')
| -rw-r--r-- | drivers/gpu/host1x/mipi.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/drivers/gpu/host1x/mipi.c b/drivers/gpu/host1x/mipi.c index a264b339ae09..7253048ce131 100644 --- a/drivers/gpu/host1x/mipi.c +++ b/drivers/gpu/host1x/mipi.c @@ -279,6 +279,10 @@ int tegra_mipi_calibrate(struct tegra_mipi_device *device) 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 |= MIPI_CAL_CTRL_START; tegra_mipi_writel(device->mipi, value, MIPI_CAL_CTRL); |