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Re: [PATCH v6 1/4] Documentation: dt-bindings: Describe SROMc configuration

From Krzysztof Kozlowski <k.kozlowski@samsung.com>
Newsgroups linux.kernel
Subject Re: [PATCH v6 1/4] Documentation: dt-bindings: Describe SROMc configuration
Date 2015-11-06 09:20 +0100
Message-ID <qrKpz-1YN-5@gated-at.bofh.it> (permalink)
References <qrrwB-6v5-7@gated-at.bofh.it> <qrrwC-6v5-19@gated-at.bofh.it> <qrCLn-5vX-7@gated-at.bofh.it> <qrKpz-1YN-7@gated-at.bofh.it>
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On 06.11.2015 17:14, Pavel Fedin wrote:
>  Hello!
> 
>>> +- samsung,srom-timing : array of 6 integers, specifying bank timings in the
>>> +                        following order: Tacp, Tcah, Tcoh, Tacc, Tcos, Tacs.
>>> +                        Each value is specified in cycles and has the following
>>> +                        meaning and valid range:
>>> +                        Tacp : Page mode access cycle at Page mode (0 - 15)
>>> +                        Tcah : Address holding time after CSn (0 - 15)
>>> +                        Tcoh : Chip selection hold on OEn (0 - 15)
>>> +                        Tacc : Access cycle (0 - 32)
>>
>> All of the manuals have error here. Probably it can be either: 1-32 or
>> 0-31. I would bet on 0-31, what do you think?
> 
>  Damn, everything starts from 0, so i automatically put '0 - 32'. The actual time, however, varies from 1 to 32, but the value is
> from 0 to 31, i. e. <time> - 1
>  What shall we do? Just document this, or adjust the code to take number of cycles and subtract 1? To tell the truth, i'm already
> sick of these small fixups, and i would prefer just to fix documentation.

Whatever you choose. Just make it correct. :) The problem is that
Datasheet has errors for these values...

Best regards,
Krzysztof

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Thread

[PATCH v6 0/4] Exynos SROMc configuration and Ethernet support for  SMDK5410 Pavel Fedin <p.fedin@samsung.com> - 2015-11-05 13:10 +0100
  [PATCH v6 2/4] ARM: dts: Add SROMc to Exynos 5410 Pavel Fedin <p.fedin@samsung.com> - 2015-11-05 13:10 +0100
    Re: [PATCH v6 2/4] ARM: dts: Add SROMc to Exynos 5410 Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-11-06 01:10 +0100
  [PATCH v6 4/4] ARM: dts: Add Ethernet chip to SMDK5410 Pavel Fedin <p.fedin@samsung.com> - 2015-11-05 13:10 +0100
    Re: [PATCH v6 4/4] ARM: dts: Add Ethernet chip to SMDK5410 Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-11-06 01:20 +0100
  [PATCH v6 3/4] drivers: exynos-srom: Add support for bank configuration Pavel Fedin <p.fedin@samsung.com> - 2015-11-05 13:10 +0100
  [PATCH v6 1/4] Documentation: dt-bindings: Describe SROMc configuration Pavel Fedin <p.fedin@samsung.com> - 2015-11-05 13:10 +0100
    Re: [PATCH v6 1/4] Documentation: dt-bindings: Describe SROMc  configuration Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-11-06 01:10 +0100
      Re: [PATCH v6 1/4] Documentation: dt-bindings: Describe SROMc  configuration Krzysztof Kozlowski <k.kozlowski@samsung.com> - 2015-11-06 09:20 +0100
      RE: [PATCH v6 1/4] Documentation: dt-bindings: Describe SROMc  configuration Pavel Fedin <p.fedin@samsung.com> - 2015-11-06 09:20 +0100

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