mfd: Add support for sun6i PRCM (Power/Reset/Clock Management) unit

The PRCM (Power/Reset/Clock Management) block exposes several subdevices
in different subsystems (clk, reset ...)

Add basic support for the PRCM unit with clk (AR100, AHB0, and APB0 clks)
and reset controller subdevices.

Other subdevices might be added later (if needed).

Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
index c681741..e56fb37 100644 (file)
--- a/drivers/mfd/Kconfig
+++ b/drivers/mfd/Kconfig
@@ -732,6 +732,14 @@ config MFD_STA2X11
        select MFD_CORE
        select REGMAP_MMIO
 
+config MFD_SUN6I_PRCM
+       bool "Allwinner A31 PRCM controller"
+       depends on ARCH_SUNXI
+       select MFD_CORE
+       help
+         Support for the PRCM (Power/Reset/Clock Management) unit available
+         in A31 SoC.
+
 config MFD_SYSCON
        bool "System Controller Register R/W Based on Regmap"
        select REGMAP_MMIO

diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
index 1efecf2..df7823c 100644 (file)
--- a/drivers/mfd/Makefile
+++ b/drivers/mfd/Makefile
@@ -29,6 +29,7 @@ obj-$(CONFIG_MFD_STA2X11)     += sta2x11-mfd.o
 obj-$(CONFIG_MFD_STMPE)                += stmpe.o
 obj-$(CONFIG_STMPE_I2C)                += stmpe-i2c.o
 obj-$(CONFIG_STMPE_SPI)                += stmpe-spi.o
+obj-$(CONFIG_MFD_SUN6I_PRCM)   += sun6i-prcm.o
 obj-$(CONFIG_MFD_TC3589X)      += tc3589x.o
 obj-$(CONFIG_MFD_T7L66XB)      += t7l66xb.o tmio_core.o
 obj-$(CONFIG_MFD_TC6387XB)     += tc6387xb.o tmio_core.o

diff --cc drivers/mfd/sun6i-prcm.c
Simple merge