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| author | Mark Brown | 2018-06-04 12:51:12 +0200 |
|---|---|---|
| committer | Mark Brown | 2018-06-04 12:51:12 +0200 |
| commit | 16c10b3bf84df5564683c704039f6199b8359b16 (patch) | |
| tree | 3d25504362f952e0dd87a200b0d1050280539b81 /drivers/spi/spi-cadence.c | |
| parent | spi: Fix typo on SPI_MEM help text (diff) | |
| parent | spi: sh-msiof: Fix setting SIRMDR1.SYNCAC to match SITMDR1.SYNCAC (diff) | |
| download | kernel-qcow2-linux-16c10b3bf84df5564683c704039f6199b8359b16.tar.gz kernel-qcow2-linux-16c10b3bf84df5564683c704039f6199b8359b16.tar.xz kernel-qcow2-linux-16c10b3bf84df5564683c704039f6199b8359b16.zip | |
Merge branch 'spi-4.17' into spi-4.18 for the merge window
Diffstat (limited to 'drivers/spi/spi-cadence.c')
| -rw-r--r-- | drivers/spi/spi-cadence.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c index de394422b611..f3dad6fcdc35 100644 --- a/drivers/spi/spi-cadence.c +++ b/drivers/spi/spi-cadence.c @@ -313,6 +313,14 @@ static void cdns_spi_fill_tx_fifo(struct cdns_spi *xspi) while ((trans_cnt < CDNS_SPI_FIFO_DEPTH) && (xspi->tx_bytes > 0)) { + + /* When xspi in busy condition, bytes may send failed, + * then spi control did't work thoroughly, add one byte delay + */ + if (cdns_spi_read(xspi, CDNS_SPI_ISR) & + CDNS_SPI_IXR_TXFULL) + usleep_range(10, 20); + if (xspi->txbuf) cdns_spi_write(xspi, CDNS_SPI_TXD, *xspi->txbuf++); else |