diff options
| author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-18 11:23:05 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-01-18 11:23:05 -0800 |
| commit | 1e2a199f6ccdc15cf111d68d212e2fd4ce65682e (patch) | |
| tree | d0624557948cad25a7c5ada25dff54b053eb7a23 /drivers/spi/spi-cadence.c | |
| parent | b4459f4413c890a35dfcecaff29d37ac65607d76 (diff) | |
| parent | 4d163ad79b155c71bf30366dc38f8d2502f78844 (diff) | |
Merge tag 'spi-fix-v5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi
Pull spi fixes from Mark Brown:
"A few more bug fixes for SPI, both driver specific ones. The caching
in the Cadence driver is to avoid a deadlock trying to retrieve the
cached value later at runtime"
* tag 'spi-fix-v5.11-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi:
spi: cadence: cache reference clock rate during probe
spi: fsl: Fix driver breakage when SPI_CS_HIGH is not set in spi->mode
Diffstat (limited to 'drivers/spi/spi-cadence.c')
| -rw-r--r-- | drivers/spi/spi-cadence.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/spi/spi-cadence.c b/drivers/spi/spi-cadence.c index 70467b9d61ba..a3afd1b9ac56 100644 --- a/drivers/spi/spi-cadence.c +++ b/drivers/spi/spi-cadence.c @@ -115,6 +115,7 @@ struct cdns_spi { void __iomem *regs; struct clk *ref_clk; struct clk *pclk; + unsigned int clk_rate; u32 speed_hz; const u8 *txbuf; u8 *rxbuf; @@ -250,7 +251,7 @@ static void cdns_spi_config_clock_freq(struct spi_device *spi, u32 ctrl_reg, baud_rate_val; unsigned long frequency; - frequency = clk_get_rate(xspi->ref_clk); + frequency = xspi->clk_rate; ctrl_reg = cdns_spi_read(xspi, CDNS_SPI_CR); @@ -558,8 +559,9 @@ static int cdns_spi_probe(struct platform_device *pdev) master->auto_runtime_pm = true; master->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; + xspi->clk_rate = clk_get_rate(xspi->ref_clk); /* Set to default valid value */ - master->max_speed_hz = clk_get_rate(xspi->ref_clk) / 4; + master->max_speed_hz = xspi->clk_rate / 4; xspi->speed_hz = master->max_speed_hz; master->bits_per_word_mask = SPI_BPW_MASK(8); |