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author | Dong Aisheng <dong.aisheng@linaro.org> | 2012-09-05 10:57:13 +0800 |
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committer | Samuel Ortiz <sameo@linux.intel.com> | 2012-09-17 15:24:14 +0200 |
commit | 87d687301f380729ec320619f100f3ba39f3693d (patch) | |
tree | 3f6f274a01552da3b5f7af4dc1eaaad04a11c1b4 /Documentation/devicetree/bindings/mfd | |
parent | a435ae1d51e2f18414f2a87219fdbe068231e692 (diff) | |
download | linux-3.10-87d687301f380729ec320619f100f3ba39f3693d.tar.gz linux-3.10-87d687301f380729ec320619f100f3ba39f3693d.tar.bz2 linux-3.10-87d687301f380729ec320619f100f3ba39f3693d.zip |
mfd: Add syscon driver based on regmap
Add regmap based syscon driver.
This is usually used for access misc bits in registers which does not belong
to a specific module, for example, IMX IOMUXC GPR and ANATOP.
With this driver, client can use generic regmap API to access registers
which are registered into syscon.
Reviewed-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
Signed-off-by: Dong Aisheng <dong.aisheng@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
Diffstat (limited to 'Documentation/devicetree/bindings/mfd')
-rw-r--r-- | Documentation/devicetree/bindings/mfd/syscon.txt | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/mfd/syscon.txt b/Documentation/devicetree/bindings/mfd/syscon.txt new file mode 100644 index 00000000000..fe8150bb324 --- /dev/null +++ b/Documentation/devicetree/bindings/mfd/syscon.txt @@ -0,0 +1,20 @@ +* System Controller Registers R/W driver + +System controller node represents a register region containing a set +of miscellaneous registers. The registers are not cohesive enough to +represent as any specific type of device. The typical use-case is for +some other node's driver, or platform-specific code, to acquire a +reference to the syscon node (e.g. by phandle, node path, or search +using a specific compatible value), interrogate the node (or associated +OS driver) to determine the location of the registers, and access the +registers directly. + +Required properties: +- compatible: Should contain "syscon". +- reg: the register region can be accessed from syscon + +Examples: +gpr: iomuxc-gpr@020e0000 { + compatible = "fsl,imx6q-iomuxc-gpr", "syscon"; + reg = <0x020e0000 0x38>; +}; |