redonkable
/
alistair23-linux
1
0
Fork 0
Code Releases Activity

spi: spi-mem: Fix Dual/Quad modes on Octal-capable devices 

Currently buswidths 2 and 4 are rejected for a device that advertises
Octal capabilities.  Allow these buswidths, just like is done for
buswidth 2 and Quad-capable devices.

Fixes: b12a084c87 ("spi: spi-mem: add support for octal mode I/O data transfer")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/20200416101418.14379-1-geert+renesas@glider.be
Signed-off-by: Mark Brown <broonie@kernel.org>
alistair/sunxi64-5.8
Geert Uytterhoeven 2020-04-16 12:14:18 +02:00 committed by Mark Brown
parent f58dcab68a
commit 80300a7d5f
No known key found for this signature in database
GPG Key ID: 24D68B725D5487D0
1 changed files with 6 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
drivers/spi/spi-mem.c
View File

@ -108,15 +108,17 @@ static int spi_check_buswidth_req(struct spi_mem *mem, u8 buswidth, bool tx)
return 0;
case 2:
if ((tx && (mode & (SPI_TX_DUAL | SPI_TX_QUAD))) ||
(!tx && (mode & (SPI_RX_DUAL | SPI_RX_QUAD))))
if ((tx &&
(mode & (SPI_TX_DUAL | SPI_TX_QUAD | SPI_TX_OCTAL))) ||
(!tx &&
(mode & (SPI_RX_DUAL | SPI_RX_QUAD | SPI_RX_OCTAL))))
return 0;
break;
case 4:
if ((tx && (mode & SPI_TX_QUAD)) ||
(!tx && (mode & SPI_RX_QUAD)))
if ((tx && (mode & (SPI_TX_QUAD | SPI_TX_OCTAL))) ||
(!tx && (mode & (SPI_RX_QUAD | SPI_RX_OCTAL))))
return 0;
break;