linux-kernel - RE: [PATCH] i2c: designware: Add ACPI HID for DWAPB I2C controller on Fujitsu MONAKA

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID:
 <OS3PR01MB69031E111FDC5B5D302E61A9D44D2@OS3PR01MB6903.jpnprd01.prod.outlook.com>
Date: Wed, 23 Oct 2024 04:40:06 +0000
From: "Yoshihiro Furudera (Fujitsu)" <fj5100bi@...itsu.com>
To: 'Andy Shevchenko' <andriy.shevchenko@...ux.intel.com>
CC: Jarkko Nikula <jarkko.nikula@...ux.intel.com>, Mika Westerberg
	<mika.westerberg@...ux.intel.com>, Jan Dabros <jsd@...ihalf.com>, Andi Shyti
	<andi.shyti@...nel.org>, "linux-i2c@...r.kernel.org"
	<linux-i2c@...r.kernel.org>, "linux-kernel@...r.kernel.org"
	<linux-kernel@...r.kernel.org>
Subject: RE: [PATCH] i2c: designware: Add ACPI HID for DWAPB I2C controller on
 Fujitsu MONAKA

Thanks for the comment.

> On Tue, Oct 22, 2024 at 01:14:18AM +0000, Yoshihiro Furudera (Fujitsu) wrote:
> > > On Mon, Oct 21, 2024 at 07:22:55AM +0000, Yoshihiro Furudera (Fujitsu)
> wrote:
> > > > > On Fri, Oct 18, 2024 at 01:58:26AM +0000, Yoshihiro Furudera wrote:
> 
> ...
> 
> > >      Device (SMB0)
> > >      {
> > >          ...
> > >      }
> 
> > > Hmm... Why Device object is called SMB0, are you sure it's the correct one?
> >
> > We considered the string to be the most concise representation of
> > SMBus HC#0, given the general constraint that object names should
> > ideally be four characters or less. We understood that, unlike HID,
> > SMBus object names are vendor-specific.
> 
> But this all about UART! How is it related to SMBus?

We created the SMB0 object according to the following specifications:
 
ACPI Specification
13.2. Accessing the SMBus from ASL Code
https://uefi.org/htmlspecs/ACPI_Spec_6_4_html/13_ACPI_System_Mgmt_Bus_Interface_Spec/accessing-the-smbus-from-asl-code.html
 
IPMI Specification
Example 4: SSIF Interface(P574)
https://www.intel.co.jp/content/www/jp/ja/products/docs/servers/ipmi/ipmi-second-gen-interface-spec-v2-rev1-1.html
 
Therefore, SMB0 does not deviate from the SMBus related specifications.

> --
> With Best Regards,
> Andy Shevchenko
> 

Best Regards,
Yoshihiro Furudera