Messages in this thread Patch in this message | | | From | Yogesh Narayan Gaur <> | Subject | [PATCH v5 2/7] spi: spi-mem: add support for octal mode I/O data transfer | Date | Mon, 3 Dec 2018 08:39:12 +0000 |
| |
Add support for octal mode I/O data transfer in spi-mem framework.
Signed-off-by: Yogesh Gaur <yogeshnarayan.gaur@nxp.com> Reviewed-by: Boris Brezillon <boris.brezillon@bootlin.com> --- Changes for v5: - Modified string 'octo' with 'octal'. Changes for v4: - None Changes for v3: - Modified string 'octal' with 'octo'. Changes for v2: - Patch added in v2 version.
drivers/spi/spi-mem.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/spi/spi-mem.c b/drivers/spi/spi-mem.c index 62a7b80..5e15d62 100644 --- a/drivers/spi/spi-mem.c +++ b/drivers/spi/spi-mem.c @@ -12,7 +12,7 @@ #include "internals.h" -#define SPI_MEM_MAX_BUSWIDTH 4 +#define SPI_MEM_MAX_BUSWIDTH 8 /** * spi_controller_dma_map_mem_op_data() - DMA-map the buffer attached to a @@ -121,6 +121,13 @@ static int spi_check_buswidth_req(struct spi_mem *mem, u8 buswidth, bool tx) break; + case 8: + if ((tx && (mode & SPI_TX_OCTAL)) || + (!tx && (mode & SPI_RX_OCTAL))) + return 0; + + break; + default: break; } -- 2.7.4
| |