[PATCH 1/2] fsl: Add binding for RCPM
From: Dongsheng Wang <hidden>
Date: 2015-09-09 06:42:46
Also in:
linux-arm-kernel, linux-devicetree
Subsystem:
freescale soc drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Christophe Leroy, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
From: Wang Dongsheng <redacted> RCPM is the Run Control and Power Management module performs all device-level tasks associated with device run control and power management. Add this for freescale powerpc platform and layerscape platform. Signed-off-by: Chenhui Zhao <redacted> Signed-off-by: Tang Yuantian <redacted> Signed-off-by: Wang Dongsheng <redacted>
diff --git a/Documentation/devicetree/bindings/soc/fsl/rcpm.txt b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt
new file mode 100644
index 0000000..284070c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/fsl/rcpm.txt@@ -0,0 +1,64 @@ +* Run Control and Power Management +------------------------------------------- +The RCPM performs all device-level tasks associated with device run control +and power management. + +Required properites: + - reg : Offset and length of the register set of RCPM block. + - compatible : Sould contain a chip-specific RCPM block compatible string + and (if applicable) may contain a chassis-version RCPM compatible string. + Chip-specific strings are of the form "fsl,<chip>-rcpm", such as: + * "fsl,p2041-rcpm" + * "fsl,p3041-rcpm" + * "fsl,p4080-rcpm" + * "fsl,p5020-rcpm" + * "fsl,p5040-rcpm" + * "fsl,t4240-rcpm" + * "fsl,b4420-rcpm" + * "fsl,b4860-rcpm" + + Chassis-version strings are of the form "fsl,qoriq-rcpm-<version>", + such as: + * "fsl,qoriq-rcpm-1.0": for chassis 1.0 rcpm + * "fsl,qoriq-rcpm-2.0": for chassis 2.0 rcpm + * "fsl,qoriq-rcpm-2.1": for chassis 2.1 rcpm + +All references to "1.0" and "2.0" refer to the QorIQ chassis version to +which the chip complies. +Chassis Version Example Chips +--------------- ------------------------------- +1.0 p4080, p5020, p5040, p2041, p3041 +2.0 t4240, b4860, b4420 +2.1 t1040, ls1021 + +Example: +The RCPM node for T4240: + rcpm: global-utilities@e2000 { + compatible = "fsl,t4240-rcpm", "fsl,qoriq-rcpm-2.0"; + reg = <0xe2000 0x1000>; + }; + +The RCPM node for P4080: + rcpm: global-utilities@e2000 { + compatible = "fsl,qoriq-rcpm-1.0"; + reg = <0xe2000 0x1000>; + }; + +* Freescale RCPM Wakeup Source Device Tree Bindings +------------------------------------------- +Required rcpm-wakeup property should be added to a device node if the device +can be used as a wakeup source. + + - rcpm-wakeup: should contain a pointer to the rcpm node and the + corresponding bit of device in the register. + +Example: + lpuart0: serial@2950000 { + compatible = "fsl,ls1021a-lpuart"; + reg = <0x0 0x2950000 0x0 0x1000>; + interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&sysclk>; + clock-names = "ipg"; + rcpm-wakeup = <&rcpm 0x0 0x40000000>; + status = "disabled"; + };
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2.1.0.27.g96db324