Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
IronPort-SDR: VXkOfeImNyJE1GtalIpiKrN963cGDjVGT3umlfDZjObOl4ARg5JBwQEccR28kCOqey7V8qnziH
 Qt6b1zdvEiiw==
IronPort-SDR: nfBqt7rIEHwsG+hMAzCo+x19jOOmOiS5wxcCkf7YjHLrzWHsXkS7JbgoG3EXMuXZS1nfD1WdTA
 R46RH99SfaOA==
Date:   Fri, 20 Nov 2020 14:28:05 +0200
From:   Mika Westerberg <mika.westerberg@linux.intel.com>
To:     Flavio Suligoi <f.suligoi@asem.it>
Cc:     "Rafael J . Wysocki" <rjw@rjwysocki.net>,
        Len Brown <lenb@kernel.org>,
        Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
        linux-acpi@vger.kernel.org, linux-gpio@vger.kernel.org,
        linux-kernel@vger.kernel.org
Subject: Re: [PATCH v2] docs: ACPI: enumeration: add PCI hierarchy
 representation
Message-ID: <20201120122805.GT2495@lahna.fi.intel.com>
References: <20201120111125.78296-1-f.suligoi@asem.it>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20201120111125.78296-1-f.suligoi@asem.it>
Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo
Precedence: bulk

On Fri, Nov 20, 2020 at 12:11:25PM +0100, Flavio Suligoi wrote:
> For "fixed" PCI devices, such as chips directly soldered
> on the main board (ethernet, Wi-Fi, serial ports, etc.),
> it is possible to find an ACPI enumeration.
> 
> This allows to add useful properties to these devices.
> Just for an example: the property "gpio-line-names" can be
> added to the pins of a GPIO expander on the PCI bus.
> 
> In order to find the ACPI name of a PCI device, it's necessary
> to disassemble the BIOS ACPI tables (in particular the DSDT)
> and also to analyze the PCI bus topology of the board.
> 
> This patch, with a practical example, show how to do this.
> 
> Signed-off-by: Flavio Suligoi <f.suligoi@asem.it>

Reviewed-by: Mika Westerberg <mika.westerberg@linux.intel.com>