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| author | Andy Shevchenko <andriy.shevchenko@linux.intel.com> | 2024-04-17 13:54:28 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2024-05-03 11:11:31 +0900 |
| commit | 2c547549ac69380bb03b495c5ef3dbc03c9c7a48 (patch) | |
| tree | cfd0512df33c6ceea9df5bb114175a15e0675ba4 /drivers/spi/spi-pxa2xx.c | |
| parent | 6be871d5fd2ecac8987a63fbf7ee38e007d14133 (diff) | |
| download | lwn-2c547549ac69380bb03b495c5ef3dbc03c9c7a48.tar.gz lwn-2c547549ac69380bb03b495c5ef3dbc03c9c7a48.zip | |
spi: pxa2xx: Allow number of chip select pins to be read from property
In some cases the number of the chip select pins might come from
the device property. Allow driver to use it.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20240417110334.2671228-2-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-pxa2xx.c')
| -rw-r--r-- | drivers/spi/spi-pxa2xx.c | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/drivers/spi/spi-pxa2xx.c b/drivers/spi/spi-pxa2xx.c index 2f60b2fde8d5..ab6fd55237cd 100644 --- a/drivers/spi/spi-pxa2xx.c +++ b/drivers/spi/spi-pxa2xx.c @@ -1357,6 +1357,7 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev) struct ssp_device *ssp = NULL; const void *match; bool is_lpss_priv; + u32 num_cs = 1; int status; is_lpss_priv = platform_get_resource_byname(pdev, IORESOURCE_MEM, "lpss_priv"); @@ -1395,8 +1396,11 @@ pxa2xx_spi_init_pdata(struct platform_device *pdev) pdata->dma_filter = pxa2xx_spi_idma_filter; } + /* Read number of chip select pins, if provided */ + device_property_read_u32(dev, "num-cs", &num_cs); + + pdata->num_chipselect = num_cs; pdata->is_target = device_property_read_bool(dev, "spi-slave"); - pdata->num_chipselect = 1; pdata->enable_dma = true; pdata->dma_burst_size = 1; |