[PATCH v2 1/2] arm: dts: bcm283x: Allow UARTs to work before relocation

Matthias Brugger mbrugger at suse.com
Thu May 14 10:56:02 CEST 2020

On 15/04/2020 21:59, Tom Rini wrote:
> On Tue, Apr 14, 2020 at 08:23:10PM -0600, Simon Glass wrote:
>> Hi,
>> On Sun, 22 Mar 2020 at 21:16, Simon Glass <sjg at chromium.org> wrote:
>>> At present the pinctrl nodes are not enabled in pre-relocation U-Boot so
>>> the UARTs do not correctly select the pinconfig to enable the UART pins.
>>> Fix this so that the U-Boot banner is printed.
>>> This fixes serial output on rpi_3b_32b with the following config.txt
>>> options:
>>>    enable_uart=1
>>>    gpu_freq=250
>>> Signed-off-by: Simon Glass <sjg at chromium.org>
>>> Fixes: 9821636b64 (bcm2835_pinctrl: Probe pre-reloc)
>>> ---
>>> Changes in v2:
>>> - Update commit message
>>>  arch/arm/dts/bcm283x-u-boot.dtsi | 8 ++++++++
>>>  1 file changed, 8 insertions(+)
>> Any thoughts on this series? At present all my lab tests fail.
> I don't know if the problem is my firmware is too old (and so works) or
> your firmware is too old (and so fails) or if there's some
> phase-of-the-moon problem.  So while I'd like to know _why_ my 3B is
> fine and yours is not, we should just take this I suppose.

I agree with Tom, we should try to find out what's the problem. Do you know
which version (e.g. git commit or which version of rasbian etc) of the RPi FW
you are using? If not, can you provide me with the md5sum's so that I can try to
reproduce this.


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