blob: 8f7d5f3e5d8a00c2781d09c63c1aa303f4663f85 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
Device Tree Bindings for Freescale i.MX8M Generic Power Domain
==============================================================
The binding for the i.MX8M Generic power Domain[1].
[1] Documentation/devicetree/bindings/power/power_domain.txt
Required properties:
- compatible: should be of:
- "fsl,imx8m-power-domain"
- #power-domain-cells: Number of cells in a PM domain Specifier, must be 0
- domain-index: should be the domain index number need to pass to TF-A
- domain-name: the name of this pm domain
Optional properties:
- clocks: a number of phandles to clocks that need to be enabled during
domain power-up sequence to ensure reset propagation into devices
located inside this power domain
- power-supply: Power supply used to power the domain
- parent-domains: the phandle to the parent power domain
- active-wakeup: keep the PM domain powered in case the attached device wakeup
is enabled.
- rpm-always-on: keep the PM domain powered except for system suspend.
example:
vpu_g1_pd: vpug1-pd {
compatible = "fsl,imx8mm-pm-domain";
#power-domain-cells = <0>;
domain-index = <6>;
domain-name = "vpu_g1";
parent-domains = <&vpumix_pd>;
clocks = <&clk IMX8MM_CLK_VPU_G1_ROOT>;
};
Specifying Power domain for IP modules
======================================
IP cores belonging to a power domain should contain a 'power-domains'
property that is a phandle for PGC node representing the domain.
Example of a device that is part of the vpu_g1 power domain:
vpu_g1: vpu_g1@38300000 {
/* ... */
interrupts = <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "irq_hantro";
/* ... */
power-domains = <&vpu_g1_pd>;
};
|
