tree 1884ffbf8d2c6639e1c509e0e345a678c0007c1f
parent 576e45cf958b05732560a7fa2f07af237bd50ad6
author Simon Glass <sjg@chromium.org> 1433536773 -0600
committer Tom Warren <twarren@nvidia.com> 1433868973 -0700

tegra: spi: Drop the claim_bus() method to correct delays

At present the driver does not properly honour the requested SPI CS
deactivation delay since the SPI bus is changed in the claim_bus() method.

Everything the claim_bus() method does can be done when the device is probed
(setting the speed and mode) and at the start of a new transfer (where the
fifo_status is already cleared). So drop this method.

Also, until the delay is complete, we should not touch the bus, so make sure
that spi_cs_activate() is called before other things are done in the xfer()
method.

Signed-off-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Warren <twarren@nvidia.com>