From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Fainelli Subject: Re: [PATCH 02/89] dt-bindings: i2c: brcmstb: Add BCM2711 BSC/AUTO-I2C binding Date: Mon, 24 Feb 2020 09:48:17 -0800 Message-ID: References: <9e427ff22fa40b7146b44aee6468559499deb1f1.1582533919.git-series.maxime@cerno.tech> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <9e427ff22fa40b7146b44aee6468559499deb1f1.1582533919.git-series.maxime-R63rPqgGiG5yDzI6CaY1VQ@public.gmane.org> Content-Language: en-US Sender: devicetree-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Maxime Ripard , Nicolas Saenz Julienne , Eric Anholt Cc: dri-devel-PD4FTy7X32lNgt0PjOBp9y5qC8QIuHrW@public.gmane.org, linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, bcm-kernel-feedback-list-dY08KVG/lbpWk0Htik3J/w@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, Dave Stevenson , Tim Gover , Phil Elwell , Kamal Dasu , Florian Fainelli , Rob Herring , Wolfram Sang , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-i2c@vger.kernel.org On 2/24/20 1:06 AM, Maxime Ripard wrote: > The HDMI blocks in the BCM2771 have an i2c controller to retrieve the > EDID. This block is split into two parts, the BSC and the AUTO_I2C, > lying in two separate register areas. > > The AUTO_I2C block has a mailbox-like interface and will take away the > BSC control from the CPU if enabled. However, the BSC is the actually > the same controller than the one supported by the brcmstb driver, and > the AUTO_I2C doesn't really bring any immediate benefit. > > We can model it in the DT as a single device with two register range, > which will allow us to use or or the other in the driver without > changing anything in the DT. > > Cc: Kamal Dasu > Cc: Florian Fainelli > Cc: Rob Herring > Cc: Wolfram Sang > Cc: bcm-kernel-feedback-list-dY08KVG/lbpWk0Htik3J/w@public.gmane.org > Cc: linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > Cc: devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org > Signed-off-by: Maxime Ripard Acked-by: Florian Fainelli -- Florian