On 21/08/12 12:51, Jessica Allison wrote: > > > ________________________________ > 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? CLCD on the MB *is* using OSC1. That's the CLCD clock, as described here: http://infocenter.arm.com/help/topic/com.arm.doc.dui0447f/CACEIGDJ.html All the other peripherals are using the 24MHz reference clock (aka OSC2). M. -- Jazz is not dead. It just smells funny... _______________________________________________ kvmarm mailing list kvmarm@xxxxxxxxxxxxxxxxxxxxx https://lists.cs.columbia.edu/cucslists/listinfo/kvmarm
