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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>
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The idea is to give useful names to GPIO lines that an implementer
will be using from userspace, e.g. for maker type projects. These are
user-visible using tools/gpio/lsgpio.c
v2: Major rewrite by anholt: Flatten each GPIO line to a line in the
file for better diffing, prefix all expansion header pins with
"P<number>" or "P5HEADER_P<number>" and drop the mostly-unused
GPIO_GEN<smallnumber> names in favor of GPIO<socgpionumber>, fix
extra '[]' on a couple of lines, fix locations of SD_CARD_DETECT,
CAM_GPIO and STATUS_LED, fix HDMI_HPD polarities, rewrite A+ using
unreleased schematics.
v3: More changes by anholt: Drop P<number> / P5HEADER<number>
prefixes. I had been skeptical about adding them, and was
convinced to drop them by Gottfried (who probably has more
experience with GPIOs in educational contexts than the rest of
us). Also drop [] brackets for "is pinmuxed", which didn't seem
to clarify, and were ambiguous for things like the SPI_*-labeled
pins which may or may not actually be pinmuxed to SPI.
v4: Rename B+'s SDA0/SCL0 to match the other boards, despite the
naming on its schematic.
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
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As the alt3 group has no pins left drop it from &gpio.
Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stefan Wahren <stefan.wahren@i2se.com>
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In case dr_mode isn't passed via DT, the dwc2 defaults to OTG mode.
But all Raspberry Pi boards here are designed only for host mode.
So fix this issue by providing a dtsi file which set the dr_mode
to host.
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
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The hub and the ethernet in its port 1 are hardwired on the board.
Compared to the adapters that can be plugged into the USB ports, this
one has no serial EEPROM to store its MAC. Nevertheless, the Raspberry Pi
has the MAC address for this adapter in its ROM, accessible from its
firmware.
U-Boot can read out the address and set the local-mac-address property of the
node with "ethernet" alias. Let's add the node so that U-Boot can do its
business.
Model B rev2 and Model B+ entries were verified by me, the hierarchy and
pid/vid pair for the Version 2 was provided by Peter Chen. Original
Model B is a blind shot, though very likely correct.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Eric Anholt <eric@anholt.net>
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VC4 is the GPU (display and 3D) present on the 283x.
Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
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For Raspberry Pi 2, we want to use the same general pin assignment
bits, but need to use bcm2836.dtsi for the CPU instead.
Signed-off-by: Eric Anholt <eric@anholt.net>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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This one has an extra P5 header (unpopulated) with I2S.
Signed-off-by: Lubomir Rintel <lkundrak@v3.sk>
Signed-off-by: Eric Anholt <eric@anholt.net>
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