diff options
| author | Talel Shenhar <talel@amazon.com> | 2018-10-11 14:20:07 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2018-10-11 17:11:04 +0300 |
| commit | f2d704794864a4bb486f2a0eaed40f25dd87303f (patch) | |
| tree | 9b0b39d17cd6cec53a7e3196b025a2668cf1abe7 /drivers/spi/spi-dw.h | |
| parent | d49a30366793210cd64759edcdf7099a2e32efd6 (diff) | |
| download | linux-f2d704794864a4bb486f2a0eaed40f25dd87303f.tar.xz | |
dw: spi: add support for Amazon's Alpine spi controller
Add support for a new devicetree compatible string called
'amazon,alpine-apb-ssi', which is necessary for the Amazon Alpine spi
controller. 'amazon,alpine-dw-apb-ssi' is used in the dw spi driver if
specified in the devicetree. Otherwise, fall back to driver default
behavior, i.e. original dw IP hw driver behavior.
Signed-off-by: Talel Shenhar <talel@amazon.com>
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/spi/spi-dw.h')
| -rw-r--r-- | drivers/spi/spi-dw.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/spi/spi-dw.h b/drivers/spi/spi-dw.h index 0168b08364d5..c9c15881e982 100644 --- a/drivers/spi/spi-dw.h +++ b/drivers/spi/spi-dw.h @@ -32,6 +32,7 @@ #define DW_SPI_IDR 0x58 #define DW_SPI_VERSION 0x5c #define DW_SPI_DR 0x60 +#define DW_SPI_CS_OVERRIDE 0xf4 /* Bit fields in CTRLR0 */ #define SPI_DFS_OFFSET 0 @@ -109,6 +110,7 @@ struct dw_spi { u32 fifo_len; /* depth of the FIFO buffer */ u32 max_freq; /* max bus freq supported */ + int cs_override; u32 reg_io_width; /* DR I/O width in bytes */ u16 bus_num; u16 num_cs; /* supported slave numbers */ |