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

[Nico Becker]

Am 12.06.2020 um 07:51 schrieb Nico Becker:
> Am 11.06.2020 um 03:51 schrieb 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
> hello,
> i use kernel 4.14.126-rt62-ltsi.
>
> greetings
>
>
i try the u-boot version v2020.07-rc4 without the patch,
and everything seems okay, no error at boot.
i ve no idea why the error at boot time is gone with the 2020.07-rc4 
version.
does anyone have any idea why?
thanks, greetings