linux-kernel - Re: [PATCH v3 0/8] ARM: sunxi: Add Reduced Serial Bus support

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Date:	Wed, 19 Aug 2015 09:32:32 -0700
From:	Mark Brown <broonie@...nel.org>
To:	Chen-Yu Tsai <wens@...e.org>
Cc:	Rob Herring <robh+dt@...nel.org>, Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Maxime Ripard <maxime.ripard@...e-electrons.com>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com,
	Hans de Goede <hdegoede@...hat.com>,
	Meng Zhang <kevin@...winnertech.com>, shuge@...winnertech.com,
	kevin.z.m.zh@...il.com
Subject: Re: [PATCH v3 0/8] ARM: sunxi: Add Reduced Serial Bus support

On Wed, Aug 19, 2015 at 12:20:01PM +0800, Chen-Yu Tsai wrote:
> Hi everyone,
> 
> This is my third attempt at adding support for Allwinner's Reduced
> Serial Bus (RSB), which is used to communicate with PMICs and other
> peripherals on their newer SoCs, such as the A23/A33/A80.

This is flagged as something that is specific to the Allwinner SoCs.
Why add generic regmap support rather than just implement the regmap
reg_read() and reg_write() in a regmap in the controller driver?  Are
there expected to be other controller drivers from other vendors?

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