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| author | Esben Haabendal <eha@deif.com> | 2018-06-20 10:34:36 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-06-20 16:46:55 +0300 |
| commit | 8570043e2cc659f375336fb8141917ca1b050234 (patch) | |
| tree | a42da081c9d3c33aa133ca422ebb608c22051faf /drivers/spi/spi-fsl-dspi.c | |
| parent | fb9acf5f1f21f1de193523ff780bda375b4c2e21 (diff) | |
| download | linux-8570043e2cc659f375336fb8141917ca1b050234.tar.xz | |
spi: spi-fsl-dspi: Fixup regmap configuration
Mark volatile registers to avoid caching bugs.
Note: SPI_MCR is marked volatile because of CLR_TXF and CLR_RXF bits.
Signed-off-by: Esben Haabendal <eha@deif.com>
Acked-by: Martin Hundebøll <martin@geanix.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-fsl-dspi.c')
| -rw-r--r-- | drivers/spi/spi-fsl-dspi.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/spi/spi-fsl-dspi.c b/drivers/spi/spi-fsl-dspi.c index 0630962ce442..1c1070114246 100644 --- a/drivers/spi/spi-fsl-dspi.c +++ b/drivers/spi/spi-fsl-dspi.c @@ -943,11 +943,23 @@ static int dspi_resume(struct device *dev) static SIMPLE_DEV_PM_OPS(dspi_pm, dspi_suspend, dspi_resume); +static const struct regmap_range dspi_volatile_ranges[] = { + regmap_reg_range(SPI_MCR, SPI_TCR), + regmap_reg_range(SPI_SR, SPI_SR), + regmap_reg_range(SPI_PUSHR, SPI_RXFR3), +}; + +static const struct regmap_access_table dspi_volatile_table = { + .yes_ranges = dspi_volatile_ranges, + .n_yes_ranges = ARRAY_SIZE(dspi_volatile_ranges), +}; + static const struct regmap_config dspi_regmap_config = { .reg_bits = 32, .val_bits = 32, .reg_stride = 4, .max_register = 0x88, + .volatile_table = &dspi_volatile_table, }; static void dspi_init(struct fsl_dspi *dspi) |