Until RPI 3 and Zero W the pl011 (uart0) was always on pin 14/15. So in
order to take care of them and other boards in the future,
we need to define UART pinmuxing on board level.
This work based on Eric Anholt's patch "ARM: bcm2385: Don't force pl011
onto pins 14/15." and Fabian Vogt's patch "ARM64: dts: bcm2837: assign
uart0 to BT and uart1 to pin headers".
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Reviewed-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Eric Anholt <eric@anholt.net>
BCM2837 is somewhat unusual in that we build its DT on both arm32 and
arm64. Most devices are being run in arm32 mode.
Having the body of the DT for 2837 separate from 2835/6 has been a
source of pain, as we often need to make changes that span both
directories simultaneously (for example, the thermal changes for 4.13,
or anything that changes the name of a node referenced by '&' from
board files). Other changes are made more complicated than they need
to be, such as the SDHOST enabling, because we have to split a single
logical change into a 283[56] half and a 2837 half.
To fix this, make the stub board include file live in arm64 instead of
arm32, and keep all of BCM283x's contents in arm32. From here on, our
changes to DT contents can be submitted through a single tree.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Raspbian and Fedora have decided to support the Pi3 in 32-bit mode for
now, so it's useful to be able to test that mode on an upstream
kernel. It's also been useful for me to use the same board for 32-bit
and 64-bit development.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Olof Johansson <olof@lixom.net>
