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spi: spi-fsl-dspi: Fixup regmap configuration

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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>
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Esben Haabendal 2018-06-20 09:34:36 +02:00 committed by Mark Brown
parent fb9acf5f1f
commit 8570043e2c
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1 changed files with 12 additions and 0 deletions
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12
drivers/spi/spi-fsl-dspi.c
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@ -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)