linux-kernel - Re: [PATCH 1/3] mfd: cros_ec: Add Chrome OS EC userspace device interface

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Date:	Thu, 20 Nov 2014 13:26:00 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Javier Martinez Canillas <javier.martinez@...labora.co.uk>
Cc:	Doug Anderson <dianders@...omium.org>,
	Bill Richardson <wfrichar@...omium.org>,
	Olof Johansson <olof@...om.net>, Simon Glass <sjg@...gle.com>,
	Gwendal Grignou <gwendal@...gle.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] mfd: cros_ec: Add Chrome OS EC userspace device
 interface

> > I know how the device driver model works.  I'm asking where the
> > 'device' is registered from, not the 'driver' i.e. platform data, DT,
> > ACPI?
> > 
> 
> Right, sorry for misunderstanding your question and the silly comment then.
> 
> $Subject adds a "cros-ec-dev" mfd cell to the cros ec mfd driver.
> So the device is registered from DT when the cros ec device node is
> matched (e.g: "google,cros-ec-spi" or "google,cros-ec-i2c") and the
> cros ec mfd driver probe function calls mfd_add_devices().

Ah, so it's registered from another MFD device.  That's okay then.
That answers my question.  FWIW I was going to ask about the missing
match table, but that's not required in this case.

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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