From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@free-electrons.com (Maxime Ripard) Date: Wed, 7 Oct 2015 11:00:01 +0100 Subject: [PATCH v5 0/5] ARM: sunxi: Add Reduced Serial Bus support In-Reply-To: <1443700673-24312-1-git-send-email-wens@csie.org> References: <1443700673-24312-1-git-send-email-wens@csie.org> Message-ID: <20151007100001.GD2278@lukather> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org 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 -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 819 bytes Desc: Digital signature URL: