linux-kernel - Re: [linux-sunxi] Re: [PATCH v3 27/30] ARM: dts: sun8i: h3: use calibration for ths

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Message-ID: <d8825c55-60e0-16da-e122-22855c294bc4@gmail.com>
Date:   Thu, 6 Sep 2018 14:18:45 +0200
From:   Philipp Rossak <embed3d@...il.com>
To:     icenowy@...c.io, maxime.ripard@...tlin.com
Cc:     Emmanuel Vadot <manu@...ouilliste.com>, lee.jones@...aro.org,
        robh+dt@...nel.org, mark.rutland@....com, wens@...e.org,
        linux@...linux.org.uk, jic23@...nel.org, knaack.h@....de,
        lars@...afoo.de, pmeerw@...erw.net, eugen.hristev@...rochip.com,
        rdunlap@...radead.org, vilhelm.gray@...il.com,
        clabbe.montjoie@...il.com, quentin.schulz@...tlin.com,
        geert+renesas@...der.be, lukas@...ner.de, arnd@...db.de,
        broonie@...nel.org, arnaud.pouliquen@...com,
        linux-iio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-sunxi@...glegroups.com, linux-kernel@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [linux-sunxi] Re: [PATCH v3 27/30] ARM: dts: sun8i: h3: use
 calibration for ths



On 06.09.2018 14:04, Icenowy Zheng wrote:
> 
> 
> 于 2018年9月6日 GMT+08:00 下午7:51:15, Maxime Ripard <maxime.ripard@...tlin.com> 写到:
>> On Thu, Sep 06, 2018 at 01:47:47PM +0200, Philipp Rossak wrote:
>>> On 04.09.2018 18:46, Emmanuel Vadot wrote:
>>>>> +			/* Data cells */
>>>>> +			thermal_calibration: calib@234 {
>>>>> +				reg = <0x234 0x8>;
>>>>> +			};
>>>>    You are declaring 8 bytes of calibration data but to my knowledge
>> it's
>>>> only 2 bytes per sensor, so 2 bytes for H3.
>>>>    Am I missing something ?
>>>>
>>>>    Thanks,
>>>
>>> Emmanuel you are right, it is 2 bytes per Sensor and should be 2
>> bytes for
>>> H3, but the thermal calibration data field is on all chips 64 bit
>> wide - so
>>> 8 bytes. So I'm reading here the complete calibration data field.
>>
>> Having one cell per channel would make more sense I guess.
Ok I will change this.
> 
> I have mentioned that this is impossible because of wrong
> addressing caused by LE2BE in SID driver.
>
I know! But I would like to prepare patches for it, that they can be 
merged when this is fixed.

Philipp