With SION set the level on such a pin is reported to the UART. So for
example when the CS5 pin is configured for GPIO mode and the level
changes this triggers an RTS interrupt on uart5.
Adding some severity to this issue: The imx uart driver currently
doesn't handle correctly irqs for changes on RI and DCD which are
enabled automatically when the respective UART is driven in DTE mode
(that is, has the fsl,dte-mode property set in the device tree). This
results in a stuck machine because the irq isn't cleared and so stalls
the CPU.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Apart from a few additions this also contains two fixes where the daisy
chain input selection register was missing. Moreover dropped _MUX from
some pins for consistency.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This patch adds some values that are needed for an out-of-tree device
tree I'm currently working with.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
This patch adds some not yet defined pinfunctions. It also adds two
comments about mistakes in the i.MX25 reference manual so it is easier
to spot the difference between reference manual and pinfunction
definitions.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
input values are only useful for pin functions which define a input
register. This patch removes all input values of pin functions which do
not have an input configuration register.
Signed-off-by: Markus Pargmann <mpa@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Add some defines currently missing, fix ordering to make the list
sorted by (mux_reg, mux_val), make sure pins are grouped by mux_reg.
The same definitions are missing from the old pinmux header
(arch/arm/mach-imx/iomux-mx25.h) but as only legacy machine support uses
that and therefor the existing list is obviously good enough I didn't
spend the effort to add the corresponding definitions there, too.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Noticed while looking over the pad definitions. None of the bogus
definitions is used in-tree.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
Uwe Kleine-König