linux-kernel - Re: [PATCH v3 04/13] ARM: dts: ipq4019: Update ipq4019-dk01.1 board data

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Date:   Wed, 21 Mar 2018 14:40:43 +0530
From:   sricharan@...eaurora.org
To:     Richard Cochran <richardcochran@...il.com>
Cc:     mark.rutland@....com, robh@...nel.org, devicetree@...r.kernel.org,
        marc.zyngier@....com, catalin.marinas@....com, will.deacon@....com,
        linux@...linux.org.uk, bjorn.andersson@...aro.org,
        david.brown@...aro.org, absahu@...eaurora.org, robh+dt@...nel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-arm-msm@...r.kernel.org, andy.gross@...aro.org,
        linux-soc@...r.kernel.org, sboyd@...eaurora.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 04/13] ARM: dts: ipq4019: Update ipq4019-dk01.1 board
 data

On 2018-03-20 20:01, Richard Cochran wrote:
> On Tue, Mar 20, 2018 at 09:28:47AM +0530, Sricharan R wrote:
>> Reviewed-by: Abhishek Sahu <absahu@...eaurora.org>
>> Adds missing memory, reserved-memory nodes.
>> 
>> Signed-off-by: Sricharan R <sricharan@...eaurora.org>
>> ---
>>  arch/arm/boot/dts/qcom-ipq4019-ap.dk01.1.dtsi | 28 
>> +++++++++++++++++++++++++++
> 
> Q: Does mainline Linux even boot on the DK?
> 
> A: No, it doesn't.

  Yes, i saw that it was booting out of mainline.
  Both DK01 and DK04 boards boots out of mainline.

cat /proc/version
Linux version 4.16.0-rc6 (srichara@...chara-linux) (gcc version 6.3.1 
20170109 (Linaro GCC 6.3-2017.02)) #1677 SMP PREEMPT Wed Mar 21 12:58:14 
IST 2018

  If it does not boot for you, then can you check if your bootloader is 
passing this bootarg ?

     bootargs=console=ttyMSM0,115200n8

   This is the only one required from bootloader to boot.
   That said, there should have been a default 'chosen' node in DTS
   for the serial console atleast which is not there today. I will add 
this
   in my v4 along with other changes.

Regards,
  Sricharan

> 
> Please add the missing basic board support before hacking random stuff
> into the DTS.
>