[PATCH] doc: bcm283x: update documentation for Raspberry Pi
Sascha Hauer
s.hauer at pengutronix.de
Tue Feb 6 00:52:29 PST 2018
On Tue, Jan 30, 2018 at 12:25:23PM +0100, Roland Hieber wrote:
> The old way does not seem to work for RPi 3, as the UART pins are
> mapped differently and the NOOBS bootcode does not seem to read a
> config.txt.
>
> Signed-off-by: Roland Hieber <r.hieber at pengutronix.de>
> ---
> Documentation/boards/bcm2835.rst | 34 ++++++++++++++++++++++++++--------
> 1 file changed, 26 insertions(+), 8 deletions(-)
Applied, thanks
Sascha
>
> diff --git a/Documentation/boards/bcm2835.rst b/Documentation/boards/bcm2835.rst
> index 13cebb01c4..1a78cfba3c 100644
> --- a/Documentation/boards/bcm2835.rst
> +++ b/Documentation/boards/bcm2835.rst
> @@ -1,17 +1,35 @@
> -Broadcom BCM2835
> +Broadcom BCM283x
> ================
>
> Raspberry Pi
> ------------
>
> - 1. Prepare a card with a FAT filesystem. Download a tiny NOOBS LITE
> - zip archive and unpack it into FAT partition.
> - See http://www.raspberrypi.org/help/noobs-setup/ for details.
> + 1. Prepare an SD or microSD card with a FAT filesystem of at least 30 MB in size.
> +
> + 2. Download the `Raspberry Pi firmware`_ (120 MB), unzip it, and copy the
> + contents of the ``boot/`` folder to your card.
>
> - 2. Compile ``barebox.bin`` image (use ``rpi_defconfig``).
> - Copy it to the SD/microSD card and name it ``recovery.img``.
> + 3. Use ``make rpi_defconfig; make`` to build barebox. This will create the following images:
>
> - 3. Connect to board's UART (115200 8N1);
> + - ``images/barebox-raspberry-pi-1.img`` for the BCM2835/ARM1176JZF-S (Raspberry Pi 1)
> + - ``images/barebox-raspberry-pi-2.img`` for the BCM2836/CORTEX-A7 (Raspberry Pi 2)
> + - ``images/barebox-raspberry-pi-3.img`` for the BCM2837/CORTEX-A53 (Raspberry Pi 3, Raspberry Pi Zero)
> +
> + Copy the respective image for your model to your SD card and name it
> + ``barebox.img``.
> +
> + 4. Create a text file ``config.txt`` on the SD card with the following content::
> +
> + kernel=barebox.img
> + enable_uart=1
> + dtoverlay=pi3-miniuart-bt
> +
> + (For more information, refer to the `documentation for config.txt`_.)
> +
> + 5. Connect to board's UART (115200 8N1);
> Use PIN6 (GND), PIN8 (UART_TX), PIN10 (UART_RX) pins.
>
> - 4. Turn board's power on.
> + 6. Turn board's power on.
> +
> +.. _Raspberry Pi firmware: https://codeload.github.com/raspberrypi/firmware/zip/80e1fbeb78f9df06701d28c0ed3a3060a3f557ef
> +.. _documentation for config.txt: https://www.raspberrypi.org/documentation/configuration/config-txt/
> --
> 2.11.0
>
>
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