From: Maxime Ripard <maxime.ripard-wi1+55ScJUtKEb57/3fJTNBPR1lH4CV8@public.gmane.org>
To: Chen-Yu Tsai <wens-jdAy2FN1RRM@public.gmane.org>
Cc: Rob Herring <robh+dt-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Pawel Moll <pawel.moll-5wv7dgnIgG8@public.gmane.org>,
Mark Rutland <mark.rutland-5wv7dgnIgG8@public.gmane.org>,
Ian Campbell
<ijc+devicetree-KcIKpvwj1kUDXYZnReoRVg@public.gmane.org>,
Kumar Gala <galak-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>,
Russell King <linux-lFZ/pmaqli7XmaaqVzeoHQ@public.gmane.org>,
Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>,
Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
shuge-0TFLnhJekD6UEPyfVivIlAC/G2K4zDHf@public.gmane.org,
Joe Perches <joe-6d6DIl74uiNBDgjK7y7TUQ@public.gmane.org>,
linux-sunxi-/JYPxA39Uh5TLH3MbocFFw@public.gmane.org,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [PATCH v5 0/5] ARM: sunxi: Add Reduced Serial Bus support
Date: Wed, 7 Oct 2015 11:00:01 +0100 [thread overview]
Message-ID: <20151007100001.GD2278@lukather> (raw)
In-Reply-To: <1443700673-24312-1-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
[-- Attachment #1: Type: text/plain, Size: 1152 bytes --]
On Thu, Oct 01, 2015 at 07:57:46PM +0800, Chen-Yu Tsai wrote:
> Hi everyone,
>
> This is my fifth 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.
>
> RSB is a simplified two wire interface using push-pull outputs,
> supporting multiple slaves, address and data parity checks, and
> clock speeds up to 20 MHz. The bus only supports simple register
> read/writes, with possible register sizes of 8/16/32 bits. Access
> sizes not matching the slave device register sizes result in NACKs
> or errors. 32 bit registers in devices have yet to be seen.
>
> v4 and later adds a platform driver for the RSB controller under
> drivers/soc/sunxi, which adds a custom driver type and bus type
> for slave drivers to use. Custom regmap support is also merged
> into the controller driver. Currently the driver only exports 2
> symbols: sunxi_rsb_driver_register() & __devm_regmap_init_sunxi_rsb().
Applied, thanks!
Maxime
--
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
prev parent reply other threads:[~2015-10-07 10:00 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-10-01 11:57 [PATCH v5 0/5] ARM: sunxi: Add Reduced Serial Bus support Chen-Yu Tsai
[not found] ` <1443700673-24312-1-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2015-10-01 11:57 ` [PATCH v5 1/5] soc: sunxi: Add Allwinner Reduced Serial Bus (RSB) controller bindings Chen-Yu Tsai
2015-10-01 11:57 ` [PATCH v5 2/5] soc: sunxi: Add driver for Allwinner Reduced Serial Bus Chen-Yu Tsai
[not found] ` <1443700673-24312-3-git-send-email-wens-jdAy2FN1RRM@public.gmane.org>
2015-10-04 14:16 ` Maxime Ripard
2015-10-05 15:43 ` Chen-Yu Tsai
[not found] ` <CAGb2v6693tYRFukPw-XaYVxsh9q8QHG9Z=KNs4xgeX+3UkgHWA-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2015-10-07 8:00 ` Maxime Ripard
2015-10-05 16:29 ` Mark Brown
2015-10-01 11:57 ` [PATCH v5 3/5] ARM: dts: sun8i: Add Reduced Serial Bus controller device node to A23/A33 dtsi Chen-Yu Tsai
2015-10-01 11:57 ` [PATCH v5 4/5] ARM: dts: sun8i: q8-common: Enable RSB controller for A23/A33 Q8 tablets Chen-Yu Tsai
2015-10-01 11:57 ` [PATCH v5 5/5] ARM: dts: sun8i: sinlinx-sina33: Enable Reduced Serial Bus controller Chen-Yu Tsai
2015-10-07 10:00 ` Maxime Ripard [this message]
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