linux-kernel - Re: [PATCH 0/2] J2 Turtle Board fixes

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Message-ID: <48881e2d8efa9d7df8156f5f81cd662c2286e597.camel@physik.fu-berlin.de>
Date: Fri, 28 Feb 2025 09:34:10 +0100
From: John Paul Adrian Glaubitz <glaubitz@...sik.fu-berlin.de>
To: Rob Landley <rob@...dley.net>, Artur Rojek <contact@...ur-rojek.eu>, 
 Yoshinori Sato <ysato@...rs.sourceforge.jp>, Rich Felker <dalias@...c.org>,
 Daniel Lezcano	 <daniel.lezcano@...aro.org>, Thomas Gleixner
 <tglx@...utronix.de>, Uros Bizjak	 <ubizjak@...il.com>
Cc: Geert Uytterhoeven <geert+renesas@...der.be>, "D . Jeff Dionne"
	 <jeff@...esemi.io>, linux-sh@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 0/2] J2 Turtle Board fixes

Hi Rob,

On Thu, 2025-02-27 at 21:03 -0600, Rob Landley wrote:
> On 2/27/25 01:52, John Paul Adrian Glaubitz wrote:
> > Hi Artur,
> > 
> > On Sun, 2025-02-16 at 18:55 +0100, Artur Rojek wrote:
> > > this series fixes boot issues and allows J2 Turtle Board to boot
> > > upstream Linux again.
> > > 
> > > Patch [1/2] enforces 8-byte alignment for the dtb offset.
> > > 
> > > Patch [2/2] resolves a problem with PIT interrupts failing to register.
> > 
> > I can confirm that this series makes my J2 Turtle Board boot again!
> > 
> > > Even with the above fixes, Turtle Board is prone to occasional freezes
> > > related to clock source transition from periodic to hrtimers. I however
> > > decided to send those two patches ahead and debug the third issue at a
> > > later time.
> > 
> > Yep, it just got stuck for me right after these messages at my first boot attempt:
> > 
> > clocksource: jiffies: mask: 0xffffffff max_cycles: 0xffffffff, max_idle_ns: 7645041785100000 ns
> > futex hash table entries: 512 (order: 1, 8192 bytes, linear)
> > NET: Registered PF_NETLINK/PF_ROUTE protocol family
> > clocksource: Switched to clocksource jcore_pit_cs
> > 
> > It boots past these messages on second attempt, although it's now stuck trying to start
> > /init. However, it's still echoing <RETURN> strokes, so it might be an issue with Toybox.
> 
> Which was fixed a year ago, which is why I told you to use the new 
> toolchain with a current musl-libc:
> 
> http://lists.landley.net/pipermail/toybox-landley.net/2024-February/030040.html
> 
> Unless you're hitting the OTHER issue I fixed last year...
> 
> https://github.com/landley/toybox/commit/0b2d5c2bb3f1

I just downloaded the latest toolchain from:

https://landley.net/bin/toolchains/latest/sh2eb-linux-muslfdpic-cross.tar.xz

and the issue still persists.

Am I missing anything?

Thanks,
Adrian

-- 
 .''`.  John Paul Adrian Glaubitz
: :' :  Debian Developer
`. `'   Physicist
  `-    GPG: 62FF 8A75 84E0 2956 9546  0006 7426 3B37 F5B5 F913