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authorDavid Woodhouse <David.Woodhouse@intel.com>2012-10-09 15:03:21 +0100
committerDavid Woodhouse <David.Woodhouse@intel.com>2012-10-09 15:04:25 +0100
commitffe315012510165ce82e4dd4767f0a5dba9edbf7 (patch)
treef601cd980af9d0ced5ca9aedecef4fa0d2ca0e15 /Documentation/devicetree/bindings/clock/vt8500.txt
parente2d3a35ee427aaba99b6c68a56609ce276c51270 (diff)
parent4a8e43feeac7996b8de2d5b2823e316917493df4 (diff)
downloadlinux-ffe315012510165ce82e4dd4767f0a5dba9edbf7.tar.bz2
Merge tag 'disintegrate-mtd-20121009' of git://git.infradead.org/users/dhowells/linux-headers
UAPI Disintegration 2012-10-09 Conflicts: MAINTAINERS arch/arm/configs/bcmring_defconfig arch/arm/mach-imx/clk-imx51-imx53.c drivers/mtd/nand/Kconfig drivers/mtd/nand/bcm_umi_nand.c drivers/mtd/nand/nand_bcm_umi.h drivers/mtd/nand/orion_nand.c
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+Device Tree Clock bindings for arch-vt8500
+
+This binding uses the common clock binding[1].
+
+[1] Documentation/devicetree/bindings/clock/clock-bindings.txt
+
+Required properties:
+- compatible : shall be one of the following:
+ "via,vt8500-pll-clock" - for a VT8500/WM8505 PLL clock
+ "wm,wm8650-pll-clock" - for a WM8650 PLL clock
+ "via,vt8500-device-clock" - for a VT/WM device clock
+
+Required properties for PLL clocks:
+- reg : shall be the control register offset from PMC base for the pll clock.
+- clocks : shall be the input parent clock phandle for the clock. This should
+ be the reference clock.
+- #clock-cells : from common clock binding; shall be set to 0.
+
+Required properties for device clocks:
+- clocks : shall be the input parent clock phandle for the clock. This should
+ be a pll output.
+- #clock-cells : from common clock binding; shall be set to 0.
+
+
+Device Clocks
+
+Device clocks are required to have one or both of the following sets of
+properties:
+
+
+Gated device clocks:
+
+Required properties:
+- enable-reg : shall be the register offset from PMC base for the enable
+ register.
+- enable-bit : shall be the bit within enable-reg to enable/disable the clock.
+
+
+Divisor device clocks:
+
+Required property:
+- divisor-reg : shall be the register offset from PMC base for the divisor
+ register.
+Optional property:
+- divisor-mask : shall be the mask for the divisor register. Defaults to 0x1f
+ if not specified.
+
+
+For example:
+
+ref25: ref25M {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <25000000>;
+};
+
+plla: plla {
+ #clock-cells = <0>;
+ compatible = "wm,wm8650-pll-clock";
+ clocks = <&ref25>;
+ reg = <0x200>;
+};
+
+sdhc: sdhc {
+ #clock-cells = <0>;
+ compatible = "via,vt8500-device-clock";
+ clocks = <&pllb>;
+ divisor-reg = <0x328>;
+ divisor-mask = <0x3f>;
+ enable-reg = <0x254>;
+ enable-bit = <18>;
+};