[PATCH] arm: dts: socfpga: l2c-310 full line of zeros error @kernel boot

[Tan, Ley Foon]

> -----Original Message-----
> From: Dinh Nguyen <dinguyen at kernel.org>
> Sent: Thursday, June 11, 2020 2:55 AM
> To: Marek Vasut <marex at denx.de>; Nico Becker <u-boot at ic-
> automation.de>; u-boot at lists.denx.de
> Cc: simon.k.r.goldschmidt at gmail.com; Tan, Ley Foon
> <ley.foon.tan at intel.com>
> Subject: Re: [PATCH] arm: dts: socfpga: l2c-310 full line of zeros error
> @kernel boot
> 
> 
> 
> On 6/10/20 8:23 AM, Marek Vasut wrote:
> > On 6/10/20 3:21 PM, Nico Becker wrote:
> >> Am 10.06.2020 um 15:19 schrieb Marek Vasut:
> >>> On 6/10/20 3:14 PM, Nico Becker wrote:
> >>>> if i remove the arm,shared-override option in the dts file, the
> >>>> kernel boot without an error.
> >>>> With the option the kernel boots with the following error:
> >>>> dmesg --level=err
> >>>> L2C-310: enabling full line of zeros but not enabled in Cortex-A9
> >>>>
> >>>> i ve no idea why the parameter have an effect on that. i try
> >>>> several kernels, allays the same behavior.
> >>>>
> >>>>
> >>>> diff --git a/arch/arm/dts/socfpga.dtsi b/arch/arm/dts/socfpga.dtsi
> >>>> index eda558f2fe..c2173416c7 100644
> >>>> --- a/arch/arm/dts/socfpga.dtsi
> >>>> +++ b/arch/arm/dts/socfpga.dtsi
> >>>> @@ -719,7 +719,6 @@
> >>>>               arm,data-latency = <2 1 1>;
> >>>>               prefetch-data = <1>;
> >>>>               prefetch-instr = <1>;
> >>>> -            arm,shared-override;
> >>>>               arm,double-linefill = <1>;
> >>>>               arm,double-linefill-incr = <0>;
> >>>>               arm,double-linefill-wrap = <1>;
> >>>>
> >>> Do you use latest u-boot/master or some older version ? Which one?
> >>
> >> sorry, i forget it.
> >>
> >> i use v2020.01
> >
> > Should be OK I think. Hmmmmm, I suspect this is another fun with the
> > ACTLR/CPACR registers, like
> 937db7188e3a5ab8f802eff9b57854189379667a .
> > Ley, any ideas ?
> >
> 
> I just tested with
> 
> 2020.07-rc4-00022-gbe79009f3b along with linux v5.7,
> 
> and I no longer see the error.
> 
Yes, I also just tested 2020.04 uboot and 5.4.23-lts kernel, also didn't see this error.
What kernel version you are using?

Regards
Ley Foon