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
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