tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
1Hisilicon System Reset Controller
2======================================
3
4Please also refer to reset.txt in this directory for common reset
5controller binding usage.
6
7The reset controller registers are part of the system-ctl block on
8hi6220 SoC.
9
10Required properties:
11- compatible: should be one of the following:
12 - "hisilicon,hi6220-sysctrl", "syscon" : For peripheral reset controller.
13 - "hisilicon,hi6220-mediactrl", "syscon" : For media reset controller.
14 - "hisilicon,hi6220-aoctrl", "syscon" : For ao reset controller.
15- reg: should be register base and length as documented in the
16 datasheet
17- #reset-cells: 1, see below
18
19Example:
20sys_ctrl: sys_ctrl@f7030000 {
21 compatible = "hisilicon,hi6220-sysctrl", "syscon";
22 reg = <0x0 0xf7030000 0x0 0x2000>;
23 #clock-cells = <1>;
24 #reset-cells = <1>;
25};
26
27Specifying reset lines connected to IP modules
28==============================================
29example:
30
31 uart1: serial@..... {
32 ...
33 resets = <&sys_ctrl PERIPH_RSTEN3_UART1>;
34 ...
35 };
36
37The index could be found in <dt-bindings/reset/hisi,hi6220-resets.h>.