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From: Giulio Benetti <giulio.benetti@benettiengineering.com>
To: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Luca Ceresoli <luca@lucaceresoli.net>,
	Leon Anavi <leon.anavi@konsulko.com>,
	Jagan Teki <jagan@amarulasolutions.com>,
	buildroot@buildroot.org
Subject: Re: [Buildroot] [PATCH 0/8] Olimex boards u-boot/linux update
Date: Mon, 25 Oct 2021 14:28:39 +0200	[thread overview]
Message-ID: <bc87defa-10d5-9235-35bd-a068ebc82128@benettiengineering.com> (raw)
In-Reply-To: <3646EE4F-A9B4-4C74-9DED-53A5EDC2A3FC@benettiengineering.com>

Hi Thomas,

On 10/24/21 4:40 PM, Giulio Benetti wrote:
> Hi Thomas,
> 
>> Il giorno 24 ott 2021, alle ore 16:09, Thomas Petazzoni <thomas.petazzoni@bootlin.com> ha scritto:
>>
>> Hello Giulio,
>>
>>> On Fri, 22 Oct 2021 00:00:15 +0200
>>> Giulio Benetti <giulio.benetti@benettiengineering.com> wrote:
>>>
>>> Giulio Benetti (8):
>>>   configs/olimex_a10_olinuxino: bump to Linux kernel 5.14.13 and u-boot
>>>     2021.10
>>>   configs/olimex_a10_olinuxino: use FPU NEON strategy
>>>   configs/olimex_a13_olinuxino: bump to Linux kernel 5.14.13 and u-boot
>>>     2021.10
>>>   configs/olimex_a13_olinuxino: use FPU NEON strategy
>>>   configs/olimex_a20_olinuxino_lime2: bump to Linux kernel 5.14.13 and
>>>     u-boot 2021.10
>>>   configs/olimex_a20_olinuxino_lime: bump to Linux kernel 5.14.13 and
>>>     u-boot 2021.10
>>>   configs/olimex_a20_olinuxino_micro: bump to Linux kernel 5.14.13 and
>>>     u-boot 2021.10
>>>   configs/olimex_a33_olinuxino: bump to Linux kernel 5.14.13 and u-boot
>>>     2021.10
>>
>> I have applied all the patches bumping U-Boot/Linux, I hope that you
>> were able to test them on real hardware.
> 
> Yes I’ve tested on real board except a10 that I don’t own and I’ve broken the a33 that I’ll have on Tuesday so I will test it.

Just received a33 olinuxino, tested and it works correctly.
The previous board is definetely broken.

Best regards
-- 
Giulio Benetti
Benetti Engineering sas

>> Make sure to monitor the next
>> Gitlab CI build results to see if there's any new build failure.
> 
> Sure I will
> 
>>
>> However, for the two patches enabling NEON as the FPU, I marked them as
>> rejected. Indeed, using NEON as the FPU is not always a good idea, as
>> it explained in the Config.in.help text:
>>
>>           This option allows to use the NEON SIMD unit, as available
>>           in some ARMv7 processors, as a floating-point unit. It
>>           should however be noted that using NEON for floating point
>>           operations doesn't provide a complete compatibility with the
>>           IEEE 754.
> 
> Thank you for pointing I didn’t know and found it on Arm website too. So now I understand the reason to not prefer NEON only on cortex a8.
> While on a7 instead we have the NEON+VFPV4
> that cover IEEE 754.
> 
> Best regards
> Giulio Benetti
> 
>>
>> Best regards,
>>
>> Thomas Petazzoni
>> -- 
>> Thomas Petazzoni, co-owner and CEO, Bootlin
>> Embedded Linux and Kernel engineering and training
>> https://bootlin.com
> 
> _______________________________________________
> buildroot mailing list
> buildroot@buildroot.org
> https://lists.buildroot.org/mailman/listinfo/buildroot
> 

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      reply	other threads:[~2021-10-25 12:28 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-10-21 22:00 [Buildroot] [PATCH 0/8] Olimex boards u-boot/linux update Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 1/8] configs/olimex_a10_olinuxino: bump to Linux kernel 5.14.13 and u-boot 2021.10 Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 2/8] configs/olimex_a10_olinuxino: use FPU NEON strategy Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 3/8] configs/olimex_a13_olinuxino: bump to Linux kernel 5.14.13 and u-boot 2021.10 Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 4/8] configs/olimex_a13_olinuxino: use FPU NEON strategy Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 5/8] configs/olimex_a20_olinuxino_lime2: bump to Linux kernel 5.14.13 and u-boot 2021.10 Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 6/8] configs/olimex_a20_olinuxino_lime: " Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 7/8] configs/olimex_a20_olinuxino_micro: " Giulio Benetti
2021-10-21 22:00 ` [Buildroot] [PATCH 8/8] configs/olimex_a33_olinuxino: " Giulio Benetti
2021-10-24 14:09 ` [Buildroot] [PATCH 0/8] Olimex boards u-boot/linux update Thomas Petazzoni
2021-10-24 14:40   ` Giulio Benetti
2021-10-25 12:28     ` Giulio Benetti [this message]

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