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| author | sxauwsk | 2018-04-17 04:01:27 +0800 |
|---|---|---|
| committer | Mark Brown | 2018-04-18 11:28:29 +0100 |
| commit | 49530e6411789c1b9ea3ebc58e520c19d1c3752f (patch) | |
| tree | e9a684422ec5ae49ad5a6fe20e71a11bf68c0888 /Documentation/mailbox.txt | |
| parent | 10b4640833e95eeacaef8060bc1b35e636df3218 (diff) | |
spi: cadence: Add usleep_range() for cdns_spi_fill_tx_fifo()
In case of xspi work in busy condition, may send bytes failed.
once something wrong, spi controller did't work any more
My test found this situation appear in both of read/write process.
so when TX FIFO is full, add one byte delay before send data;
Signed-off-by: sxauwsk <sxauwsk@163.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'Documentation/mailbox.txt')
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