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Message-ID: <DU0PR10MB6608FA4549764C670DB9E214FBFD9@DU0PR10MB6608.EURPRD10.PROD.OUTLOOK.COM>
Date: Thu, 12 Jan 2023 10:38:20 +0000
From: "Contact Bosch-Sensortec (BST/SA)"
<Bosch-Sensortec.Contact@...ch-sensortec.com>
To: Jonathan Cameron <jic23@...nel.org>,
Angel Iglesias <ang.iglesiasg@...il.com>
CC: Christophe JAILLET <christophe.jaillet@...adoo.fr>,
"ak@...klinger.de" <ak@...klinger.de>,
"andriy.shevchenko@...ux.intel.com"
<andriy.shevchenko@...ux.intel.com>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"krzysztof.kozlowski+dt@...aro.org"
<krzysztof.kozlowski+dt@...aro.org>,
"lars@...afoo.de" <lars@...afoo.de>,
"linux-iio@...r.kernel.org" <linux-iio@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"nikita.yoush@...entembedded.com" <nikita.yoush@...entembedded.com>,
"paul@...pouillou.net" <paul@...pouillou.net>,
"rafael.j.wysocki@...el.com" <rafael.j.wysocki@...el.com>,
"robh+dt@...nel.org" <robh+dt@...nel.org>,
"ulf.hansson@...aro.org" <ulf.hansson@...aro.org>
Subject: RE: [PATCH v2 3/5] iio: pressure: bmp280: Add support for new sensor
BMP580
Dear Jonathan and Angel,
Aligned with our product management, we can confirm that the CHIP-IDs are identiacal, this is correct.
Best regards,
Bosch Sensortec Sales Support
Bosch Sensortec GmbH | Gerhard-Kindler-Straße 9 | 72770 Reutlingen | GERMANY | www.bosch-sensortec.com
Sitz: Kusterdingen, Registergericht: Stuttgart HRB 382674,
Ust.IdNr. DE 183276693 - Steuer-Nr. 99012/08040
Geschäftsführung: Stefan Finkbeiner, Jens-Knut Fabrowsky
-----Original Message-----
From: Jonathan Cameron <jic23@...nel.org>
Sent: Sonntag, 8. Januar 2023 13:35
To: Angel Iglesias <ang.iglesiasg@...il.com>
Cc: Christophe JAILLET <christophe.jaillet@...adoo.fr>; ak@...klinger.de; andriy.shevchenko@...ux.intel.com; devicetree@...r.kernel.org; krzysztof.kozlowski+dt@...aro.org; lars@...afoo.de; linux-iio@...r.kernel.org; linux-kernel@...r.kernel.org; nikita.yoush@...entembedded.com; paul@...pouillou.net; rafael.j.wysocki@...el.com; robh+dt@...nel.org; ulf.hansson@...aro.org; Contact Bosch-Sensortec (BST/SA) <contact@...ch-sensortec.com>
Subject: Re: [PATCH v2 3/5] iio: pressure: bmp280: Add support for new sensor BMP580
On Sun, 01 Jan 2023 12:16:28 +0100
Angel Iglesias <ang.iglesiasg@...il.com> wrote:
> On Fri, 2022-12-30 at 18:22 +0000, Jonathan Cameron wrote:
> > On Thu, 29 Dec 2022 19:23:16 +0100
> > Angel Iglesias <ang.iglesiasg@...il.com> wrote:
> >
> > > On Thu, 2022-12-29 at 18:35 +0100, Christophe JAILLET wrote:
> > > > Le 26/12/2022 à 15:29, Angel Iglesias a écrit :
> > > > > Adds compatibility with the new sensor generation, the BMP580.
> > > > >
> > > > > The measurement and initialization codepaths are adapted from
> > > > > the device datasheet and the repository from manufacturer at
> > > > > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgithub.com%2Fboschsensortec%2FBMP5-Sensor-API&data=05%7C01%7Ccontact%40bosch-sensortec.com%7C5df3784517c940394e8308daf172e38e%7C0ae51e1907c84e4bbb6d648ee58410f4%7C0%7C0%7C638087774478147184%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=YarsZiHIZ%2FBkNNqK%2FunjfVWGgIwOtvf%2BPXs8ipHQdRQ%3D&reserved=0.
> > > > >
> > > > > Signed-off-by: Angel Iglesias
> > > > > <ang.iglesiasg-Re5JQEeQqe8AvxtiuMwx3w@...lic.gmane.org>
> > > > >
> > > >
> > > > [...]
> > > >
> > > > > diff --git a/drivers/iio/pressure/bmp280.h
> > > > > b/drivers/iio/pressure/bmp280.h index
> > > > > efc31bc84708..27d2abc17d01 100644
> > > > > --- a/drivers/iio/pressure/bmp280.h
> > > > > +++ b/drivers/iio/pressure/bmp280.h
> > > >
> > > > [...]
> > > >
> > > > > +#define BMP580_CHIP_ID 0x50
> > > > > #define BMP380_CHIP_ID 0x50
> > > >
> > > > Hi,
> > > >
> > > > this is maybe correct (I've not been able to find the datasheet to check
> > > > myself), but it looks odd to have the same ID for 2 different chips.
> > >
> > > Yes, I also couldn't find a datasheet for the BMP580 or a devkit anywhere.
> > > I'm
> > > developing this using the BMP581, which seems to be a variant
> > > almost identical.
> > > Something similar happened with the BMP38x; you could find the
> > > BMP384 and the BMP388, but the BMP380 was unavailable everywhere,
> > > datasheet included. My guess is this is a similar situation. In
> > > any case, the datasheet of the BMP581 is available here:
> > > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2F
> > > www.bosch-sensortec.com%2Fmedia%2Fboschsensortec%2Fdownloads%2Fdat
> > > asheets%2Fbst-bmp581-ds004.pdf&data=05%7C01%7Ccontact%40bosch-sens
> > > ortec.com%7C5df3784517c940394e8308daf172e38e%7C0ae51e1907c84e4bbb6
> > > d648ee58410f4%7C0%7C0%7C638087774478147184%7CUnknown%7CTWFpbGZsb3d
> > > 8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3
> > > D%7C3000%7C%7C%7C&sdata=dNnnClouPfqXntLuTWGQovRw39ehaLeuzKuN%2FNWI
> > > 8y0%3D&reserved=0
> > >
> > > Regarding the chip id being the same between generations is weird,
> > > but at least the datasheet and the sensor I have uses 0x50 as the
> > > chip id. After you mentioned this, I checked back on the reference
> > > API repository from Bosch and it has both 0x50 and 0x51 as valid
> > > IDs:
> > > *
> > > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2F
> > > github.com%2Fboschsensortec%2FBMP5-Sensor-API%2Fblob%2Fmaster%2Fbm
> > > p5_defs.h%23L198&data=05%7C01%7Ccontact%40bosch-sensortec.com%7C5d
> > > f3784517c940394e8308daf172e38e%7C0ae51e1907c84e4bbb6d648ee58410f4%
> > > 7C0%7C0%7C638087774478147184%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wL
> > > jAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C
> > > %7C&sdata=tZgYdnxpvKIndjtJaaFfcAJbBa4%2FcIgKhb4XH6sAO9A%3D&reserve
> > > d=0
> > > *
> > > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2F
> > > github.com%2Fboschsensortec%2FBMP5-Sensor-API%2Fblob%2Fmaster%2Fbm
> > > p5.c%23L1444&data=05%7C01%7Ccontact%40bosch-sensortec.com%7C5df378
> > > 4517c940394e8308daf172e38e%7C0ae51e1907c84e4bbb6d648ee58410f4%7C0%
> > > 7C0%7C638087774478147184%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwM
> > > DAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&
> > > sdata=xU9Yh2zXjol0vyF9iltRmkBK3CUlGGdcjrp3AzwvTNU%3D&reserved=0
> > https://eur03.safelinks.protection.outlook.com/?url=https%3A%2F%2Fgi
> > thub.com%2Fboschsensortec%2FBMP3-Sensor-API%2Fblob%2Fmaster%2Fbmp3_d
> > efs.h&data=05%7C01%7Ccontact%40bosch-sensortec.com%7C5df3784517c9403
> > 94e8308daf172e38e%7C0ae51e1907c84e4bbb6d648ee58410f4%7C0%7C0%7C63808
> > 7774478147184%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2
> > luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000%7C%7C%7C&sdata=faQZ4qjLF
> > jfYN2US64FbZJo%2B5lOuFw52mIY3XqoXDKU%3D&reserved=0
> > I was curious on whether we had a wrong value for bmp380, but nope... Same ID.
> >
> > Huh. As per earlier comment - who wants to moan at Bosch as this is
> > crazy situation?
> >
> > Jonathan
>
> Well I'm doing this in my free time beacuse I wanted to setup a meteo
> station and got annoyed needing to patch-up userspace code for reading
> pressure and temperature sensors on a very underpowered ARM device
> when there is a kernel subsystem for this kind of things. The rest is history on the mailing list.
> I don't think I have any leverage to have Bosch listening to my
> complaints
Sadly I don't have a good contact in Bosch. So all we can do is +CC the contact address.
If anyone else has a good channel to point out this silliness please do!
Jonathan
>
> Angel
>
> >
> > >
> > > Angel
> > >
> > > > CJ
> > > >
> > > > > #define BMP180_CHIP_ID 0x55
> > > > > #define BMP280_CHIP_ID 0x58
> > > >
> > >
> >
>
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