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From: jessica.allison.2012@xxxxxxxxxxx To: marc.zyngier@xxxxxxx Date: Tue, 21 Aug 2012 12:43:09 +0100 CC: kvmarm@xxxxxxxxxxxxxxxxxxxxx Subject: Re: Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree > Date: Wed, 15 Aug 2012 16:54:35 +0100 > From: marc.zyngier@xxxxxxx > To: jessica.allison.2012@xxxxxxxxxxx > CC: peter.maydell@xxxxxxxxxx; kvmarm@xxxxxxxxxxxxxxxxxxxxx > Subject: Re: Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree > > On 15/08/12 16:32, Jessica Allison wrote: > > > > > >> Date: Wed, 15 Aug 2012 16:20:12 +0100 > >> From: marc.zyngier@xxxxxxx > >> To: jessica.allison.2012@xxxxxxxxxxx > >> CC: peter.maydell@xxxxxxxxxx; kvmarm@xxxxxxxxxxxxxxxxxxxxx > >> Subject: Re: Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree > >> > >> On 15/08/12 16:13, Jessica Allison wrote: > >>> > >>> > >>>> Date: Wed, 15 Aug 2012 16:06:49 +0100 > >>>> From: marc.zyngier@xxxxxxx > >>>> To: peter.maydell@xxxxxxxxxx > >>>> CC: jessica.allison.2012@xxxxxxxxxxx; kvmarm@xxxxxxxxxxxxxxxxxxxxx > >>>> Subject: Re: Boot fails with Unexpected/invalid #address-cells/#size-cells in device tree > >>>> > >>>> On 15/08/12 15:50, Peter Maydell wrote: > >>>>> On 15 August 2012 15:45, Jessica Allison > >>>>> <jessica.allison.2012@xxxxxxxxxxx> wrote: > >>>>>> Yes, when I quickly remove that check in the code, it boots up just fine. > >>>>> > >>>>> Good (although we should probably do a proper fix and make sure > >>>>> we handle 64 bit sizes correctly in the following code). > >>>>> > >>>>>> Is there already a way to boot up a full graphical user environment on the > >>>>>> FastModel simulator with the KVM on ARM kernel? > >>>>>> I use > >>>>>> http://git.kernel.org/?p=linux/kernel/git/maz/arm-platforms.git;a=summary > >>>>>> for my kernel and the system boots fine into a root shell. > >>>>>> Is there a kernel driver for the LCD by now, and included in the device > >>>>>> tree? > >>>>> > >>>>> Graphics via the pl11x should work fine, but I don't think anybody has > >>>>> actually tested because the effect of stacking KVM on top of the Fast > >>>>> Model means it would run pretty slowly. Try getting it running with > >>>>> plain QEMU on x86 first, then the same kernel config should behave > >>>>> the same on KVM. > >>>> > >>>> Only the A9 tile code has some support for its private pl111. The new DT > >>>> code has no knowledge of the VE baseboard pl111. Not to mention the > >>>> HDLCD on TC1/TC2, which doesn't even have a driver. > >>>> > >>>> As mentioned in an email to Jessica a while ago, this bit is waiting for > >>>> a kind soul who'd actually cares about video output to pick it up... > >>> > >>> When my kernel boots with the rtsm_ve-cortex_a15x2.dts device tree I see the following error which, I assume, is related to the pl111 not working? > >>> > >>> clcd-pl11x: probe of 1c1f0000.clcd failed with error -22 > >> > >> That's one of the many problems. I have a really ugly workaround in one > >> of my branches that allows the frame buffer to be used, but that patch > >> will not go anywhere near mainline: > >> > >> http://git.us.kernel.org/?p=linux/kernel/git/maz/arm-platforms.git;a=commitdiff;h=de81b299148b84548fe6c563d8d70dcfddf3145c;hp=edf2c53a89824cb5752d42b89997ae8bc96dcff8 > > > > With that patch, I still get an error: > > > > clcd-pl11x mb:clcd: PL111 rev0 at 0x1c1f0000 > > clcd-pl11x: probe of mb:clcd failed with error -2 > > No idea. You'll have to trace it, I'm afraid. I found what the problem is here. This line in amba-clcd.c fails fb->clk = clk_get(&fb->dev->dev, NULL); And I think when merging your patch I mixed up osc1_clk and osc2_clk. Why does CLCD use osc2_clk and not osc1_clk like other components? Thanks Jess |
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