From mboxrd@z Thu Jan 1 00:00:00 1970 From: Arnd Bergmann Subject: Re: [PATCHv4 0/9] Add I2C support for Allwinner SoCs Date: Wed, 12 Jun 2013 13:26:56 +0200 Message-ID: <3315236.ZNXhyxmCRd@wuerfel> References: <1371024438-16631-1-git-send-email-maxime.ripard@free-electrons.com> Reply-To: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Return-path: In-Reply-To: <1371024438-16631-1-git-send-email-maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org> List-Post: , List-Help: , List-Archive: Sender: linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org List-Subscribe: , List-Unsubscribe: , To: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org Cc: Maxime Ripard , Wolfram Sang , Jason Cooper , Andrew Lunn , Emilio Lopez , Tomasz Figa , linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org, linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, sunny-0TFLnhJekD6UEPyfVivIlAC/G2K4zDHf@public.gmane.org, shuge-0TFLnhJekD6UEPyfVivIlAC/G2K4zDHf@public.gmane.org, kevin-0TFLnhJekD6UEPyfVivIlAC/G2K4zDHf@public.gmane.org List-Id: linux-i2c@vger.kernel.org On Wednesday 12 June 2013 10:07:09 Maxime Ripard wrote: > > This patchset adds support for the I2C controller found on most of the > Allwinner SoCs, especially the already supported A10 and A13, and the > yet to come A31. > > This driver leverages the Marvel mv64xxx i2c controller driver, that has > an almost identical logic, with a slightly different register layout. > > It has been tested on a A13-Olinuxino and an A10s-Olinuxino. It doesn't really matter, but can someone clarify why this driver can be reused? Did marvell and allwinner license the same hardware block or is just a really simple driver that does things in an obvious way? Arnd