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| author | sxauwsk <sxauwsk@163.com> | 2018-04-17 04:01:27 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-06-21 04:02:43 +0900 |
| commit | c5b6316c3f5139cbc1d9a37cd6b86bb7be3802bf (patch) | |
| tree | c7c56e5ecab80e31078c8bd57289bf0403bfd809 /block | |
| parent | 5f4bf078e779927200b246d05f569dbe75543ace (diff) | |
spi: cadence: Add usleep_range() for cdns_spi_fill_tx_fifo()
[ Upstream commit 49530e6411789c1b9ea3ebc58e520c19d1c3752f ]
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>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions