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Add the pinmuxing and GPIO settings for SCL/SDA for i2c1 & i2c3.
Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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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 for example:
[ 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>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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This property is unneeded and not supported by the spi-imx driver.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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The PMIC configuration is indented one level too deep.
Signed-off-by: Matthias Schiffer <matthias.schiffer@ew.tq-group.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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Add device trees for TQMa6S, TQMa6Q, and TQMa6QP embedded modules.
The A and B SoM variants are for hardware revisions that differ in
how the I2C devices are connected. For details, see [1].
This is a combination of the patches
"arm: dt: imx6qdl: add tqma6[qdl] som on mba6 mainboard",
"arm: dt: tqma6: add spi with spi nor flash on SOM",
"arm: dt: add basic support for tqma6qp on mba6", and
"arm: dt: imx6qdl-tqma6: use generic jedec,spi-nor"
from the TQMa6x BSP, with the MBa6 specific parts removed.
[1] https://support.tq-group.com/en/arm/tqma6x/linux/ptxdist/overview
Signed-off-by: Markus Niebel <Markus.Niebel@tq-group.com>
[bst@pengutronix.de: remove unnecessary container node in the iomuxc
node]
Signed-off-by: Bastian Krause <bst@pengutronix.de>
[p.zabel@pengutronix.de: merged patches from TQMa6x BSP REV.0114,
separated MBa6 DTs, fixed checkpatch and dtbs_check warnings,
added no-sd(io) properties to eMMC, added SPDX license identifiers
and commit message]
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
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