From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from hermes.aosc.io ([199.195.250.187]:42831 "EHLO hermes.aosc.io" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726436AbeIFQkB (ORCPT ); Thu, 6 Sep 2018 12:40:01 -0400 Date: Thu, 06 Sep 2018 20:04:11 +0800 In-Reply-To: <20180906115114.inc6dhqhy47obo25@flea> References: <20180830154518.29507-1-embed3d@gmail.com> <20180830154518.29507-28-embed3d@gmail.com> <20180904184623.e4386b8e6b657b1b25e90c09@bidouilliste.com> <55579dd6-625d-e71b-1482-4592dccac665@gmail.com> <20180906115114.inc6dhqhy47obo25@flea> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Subject: Re: [linux-sunxi] Re: [PATCH v3 27/30] ARM: dts: sun8i: h3: use calibration for ths To: maxime.ripard@bootlin.com, Maxime Ripard , Philipp Rossak CC: Emmanuel Vadot , lee.jones@linaro.org, robh+dt@kernel.org, mark.rutland@arm.com, wens@csie.org, linux@armlinux.org.uk, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, eugen.hristev@microchip.com, rdunlap@infradead.org, vilhelm.gray@gmail.com, clabbe.montjoie@gmail.com, quentin.schulz@bootlin.com, geert+renesas@glider.be, lukas@wunner.de, arnd@arndb.de, broonie@kernel.org, arnaud.pouliquen@st.com, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-sunxi@googlegroups.com, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org From: Icenowy Zheng Message-ID: Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org 于 2018年9月6日 GMT+08:00 下午7:51:15, Maxime Ripard 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. I have mentioned that this is impossible because of wrong addressing caused by LE2BE in SID driver. > >Maxime