1 * Run Control and Power Management
2 -------------------------------------------
3 The RCPM performs all device-level tasks associated with device run control
7 - reg : Offset and length of the register set of the RCPM block.
8 - #fsl,rcpm-wakeup-cells : The number of IPPDEXPCR register cells in the
9 fsl,rcpm-wakeup property.
10 - compatible : Must contain a chip-specific RCPM block compatible string
11 and (if applicable) may contain a chassis-version RCPM compatible
12 string. Chip-specific strings are of the form "fsl,<chip>-rcpm",
18 Chassis-version strings are of the form "fsl,qoriq-rcpm-<version>",
20 * "fsl,qoriq-rcpm-1.0": for chassis 1.0 rcpm
21 * "fsl,qoriq-rcpm-2.0": for chassis 2.0 rcpm
22 * "fsl,qoriq-rcpm-2.1": for chassis 2.1 rcpm
23 * "fsl,qoriq-rcpm-2.1+": for chassis 2.1+ rcpm
25 All references to "1.0" and "2.0" refer to the QorIQ chassis version to
26 which the chip complies.
27 Chassis Version Example Chips
28 --------------- -------------------------------
29 1.0 p4080, p5020, p5040, p2041, p3041
30 2.0 t4240, b4860, b4420
32 2.1+ ls1021a, ls1012a, ls1043a, ls1046a
35 - little-endian : RCPM register block is Little Endian. Without it RCPM
36 will be Big Endian (default case).
39 The RCPM node for T4240:
40 rcpm: global-utilities@e2000 {
41 compatible = "fsl,t4240-rcpm", "fsl,qoriq-rcpm-2.0";
42 reg = <0xe2000 0x1000>;
43 #fsl,rcpm-wakeup-cells = <2>;
46 * Freescale RCPM Wakeup Source Device Tree Bindings
47 -------------------------------------------
48 Required fsl,rcpm-wakeup property should be added to a device node if the device
49 can be used as a wakeup source.
51 - fsl,rcpm-wakeup: Consists of a phandle to the rcpm node and the IPPDEXPCR
52 register cells. The number of IPPDEXPCR register cells is defined in
53 "#fsl,rcpm-wakeup-cells" in the rcpm node. The first register cell is
54 the bit mask that should be set in IPPDEXPCR0, and the second register
55 cell is for IPPDEXPCR1, and so on.
57 Note: IPPDEXPCR(IP Powerdown Exception Control Register) provides a
58 mechanism for keeping certain blocks awake during STANDBY and MEM, in
59 order to use them as wake-up sources.
62 lpuart0: serial@2950000 {
63 compatible = "fsl,ls1021a-lpuart";
64 reg = <0x0 0x2950000 0x0 0x1000>;
65 interrupts = <GIC_SPI 80 IRQ_TYPE_LEVEL_HIGH>;
68 fsl,rcpm-wakeup = <&rcpm 0x0 0x40000000>;