2 Commits

Author	SHA1	Message	Date
Fabio Estevam	2bfdd113d0	ARM: dts: imx: Fix the SPI chipselect polarity ... The conversion of the spi-imx driver to use GPIO descriptors in commit 8cdcd8aeee28 ("spi: imx/fsl-lpspi: Convert to GPIO descriptors") helped to detect the following SPI chipselect polarity mismatch on an imx6q-sabresd: [ 4.854337] m25p80@0 enforce active low on chipselect handle Prior to the above commit, the chipselect polarity passed via cs-gpios property was ignored and considered active-low. The reason for such mismatch is clearly explained in the comments inside drivers/gpio/gpiolib-of.c: * SPI children have active low chip selects * by default. This can be specified negatively * by just omitting "spi-cs-high" in the * device node, or actively by tagging on * GPIO_ACTIVE_LOW as flag in the device * tree. If the line is simultaneously * tagged as active low in the device tree * and has the "spi-cs-high" set, we get a * conflict and the "spi-cs-high" flag will * take precedence. To properly represent the SPI chipselect polarity, change it to active-low when the "spi-cs-high" property is absent. Signed-off-by: Fabio Estevam <festevam@gmail.com> Reviewed-by: Linus Walleij <linus.walleij@linaro.org> Signed-off-by: Shawn Guo <shawnguo@kernel.org>	2020-08-30 09:37:20 +08:00
Oleksij Rempel	0d446a5055	ARM: dts: add Protonic PRTI6Q board ... Protonic PRTI6Q is a development board and a base class for different specific customer application boards based on the i.MX6 family of SoCs, developed by Protonic Holland. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: David Jander <david@protonic.nl> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Shawn Guo <shawnguo@kernel.org>	2020-07-13 19:48:53 +08:00