From: Steffen Trumtrar <s.trumtrar@pengutronix.de>
To: Raj Swaminathan <rajshyam@gmail.com>
Cc: barebox@lists.infradead.org
Subject: Re: Passing devicetree to kernel
Date: Fri, 14 Aug 2015 10:53:24 +0200 [thread overview]
Message-ID: <20150814085324.GD9841@pengutronix.de> (raw)
In-Reply-To: <CAE2nzut0jYEGFSXdH72ZYaquH+Ty_-o1N2joUuwdH+S26omrmw@mail.gmail.com>
Hi!
On Thu, Aug 13, 2015 at 09:58:51AM -0700, Raj Swaminathan wrote:
> Hi Lucas,
>
> I am using Altera's cyclone 5 SoCFPGA.
>
> Barebox version 2015.04.0
> Linux is rocketboards version 3.18.0
>
Why are you using exactly these versions? Just curious.
> I put some debug statements into the code at common/bootm.c and found
> that the internal device tree is being used and it is the right
> version. The problem is probably in the way I'm manipulating the
> devicetree in barebox. I'm trying to enable some devices and fill up
> the mac address field in barebox before i hand off the same devicetree
> to the kernel. One way i have gotten around the problem is to keep 2
> versions of the devicetree but have barebox open the kernel devicetree
> file and modify it.
>
The linux clkdriver can't handle the internal devicetree from barebox and
hangs. See the patches I just posted. It works with v2015.08.0 and 4.2-rc6.
What really breaks the linux boot is the mpu_periph_clk, though. It is
marked as gate-clk but doesn't have one specified, resulting in a NULL
pointer.
Regards,
Steffen
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
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prev parent reply other threads:[~2015-08-14 8:53 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-08-12 17:21 Raj Swaminathan
2015-08-13 15:39 ` Lucas Stach
2015-08-13 16:58 ` Raj Swaminathan
2015-08-14 8:44 ` Lucas Stach
2015-08-14 8:53 ` Steffen Trumtrar [this message]
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