summaryrefslogtreecommitdiff
path: root/Documentation
diff options
context:
space:
mode:
authorLinus Walleij <linus.walleij@linaro.org>2019-09-15 16:54:44 +0300
committerArnd Bergmann <arnd@arndb.de>2019-09-16 17:31:17 +0300
commit2a7326caab479ca257c4b9bd67db42d1d49079bf (patch)
treee3823a754a32b0132c51b65eaee37da3579e5513 /Documentation
parent375a7baddbdd62c61a41b6c25437b425d7aeeea6 (diff)
downloadlinux-2a7326caab479ca257c4b9bd67db42d1d49079bf.tar.xz
ARM: dts: dir685: Drop spi-cpol from the display
The D-Link DIR-685 had its clock polarity set as active low using the special SPI "spi-cpol" property. This is not correct: the datasheet clearly states: "Fix SCL to GND level when not in use" which is indicative that this line is active high. After a recent fix making the GPIO-based SPI driver force the clock line de-asserted at the beginning of each SPI transaction this reared its ugly head: now de-asserted was taken to mean the line should be driven high, but it should be driven low. Fix this up in the DTS file and the display works again. Link: https://lore.kernel.org/r/20190915135444.11066-1-linus.walleij@linaro.org Cc: Mark Brown <broonie@kernel.org> Fixes: 2922d1cc1696 ("spi: gpio: Add SPI_MASTER_GPIO_SS flag") Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Diffstat (limited to 'Documentation')
0 files changed, 0 insertions, 0 deletions