Commit Graph

10 Commits

Author SHA1 Message Date
Stefan Wahren 4188ea2aeb ARM: bcm283x: Define UART pinmuxing on board level
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>
2017-08-02 15:17:36 -07:00
Stefan Wahren 6b9170887e ARM: bcm2835: Fix names for the Raspberry Pi GPIO lines
There are some differences between the schematics and the official firmware
DTS [1]. So based on these additional information the following has been
changed:

* use consistent "CAM_GPIO1" for camera LED
* use consistent "CAM_GPIO0" for camera shutdown
* add "USB_LIMIT" for USB current limit (0=600mA, 1=1200mA)

[1] - https://github.com/raspberrypi/firmware/blob/master/extra/dt-blob.dts

Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Eric Anholt <eric@anholt.net>
2016-11-16 13:54:30 -08:00
Linus Walleij 731b26a6ac ARM: bcm2835: Add names for the Raspberry Pi GPIO lines
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>
2016-11-11 09:07:01 -08:00
Gerd Hoffmann a6d962aeb2 ARM: dts: bcm283x: drop alt3 from &gpio
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>
2016-10-17 09:55:48 -07:00
Stefan Wahren 00a33ec464 ARM: dts: bcm283x: Add dtsi for USB host mode
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>
2016-08-24 13:33:11 -07:00
Lubomir Rintel 6a93792774 ARM: bcm2835: dt: Add the ethernet to the device trees
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>
2016-05-31 10:32:34 -07:00
Eric Anholt 49ac67e0c3 ARM: bcm2835: Add VC4 to the device tree.
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>
2016-04-19 17:31:57 -07:00
Eric Anholt 4b8c3907c3 ARM: bcm2835: Move the CPU/peripheral include out of common RPi DT.
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>
2015-12-31 17:16:59 +01:00
Stefan Wahren 1209111209 ARM: bcm2835: dt: Use pinctrl header
This patch converts all bcm2835 dts and dtsi files to use the pinctrl
header file.

Reviewed-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
2015-05-14 10:02:31 +01:00
Matthias Klein ba2a1d6959 ARM: bcm2835: Add device tree for Raspberry Pi model B+
The model B and B+ differ in the GPIO lines for ACT and PWR leds, and the
I2S interface.

Signed-off-by: Matthias Klein <matthias.klein@linux.com>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2014-11-20 12:17:25 +01:00