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lib: utils/reset: Add Andes fdt reset driver support

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Add ATCWDT200 as reset device of AE350 platform, this driver requires
SMU to program the reset vector registers before triggering WDT software
restart signal.

dts example:

  smu@f0100000 {
    compatible = "andestech,atcsmu";
    reg = <0x00000000 0xf0100000 0x00000000 0x00001000>;
  };

  wdt: wdt@f0500000 {
    compatible = "andestech,atcwdt200";
    reg = <0x00000000 0xf0500000 0x00000000 0x00001000>;
    interrupts = <3 4>;
    interrupt-parent = <&plic0>;
    clock-frequency = <15000000>;
  };

Signed-off-by: Yu Chien Peter Lin <peterlin@andestech.com>
Reviewed-by: Leo Yu-Chi Liang <ycliang@andestech.com>
Reviewed-by: Anup Patel <anup@brainfault.org>
This commit is contained in:
Yu Chien Peter Lin
2022-10-14 08:32:47 +08:00
committed by Anup Patel
parent ef9f02e7fb
commit 8234fc1bdf
5 changed files with 134 additions and 0 deletions
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4
lib/utils/reset/Kconfig
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@@ -9,6 +9,10 @@ config FDT_RESET
if FDT_RESET
config FDT_RESET_ATCWDT200
bool "Andes WDT FDT reset driver"
default n
config FDT_RESET_GPIO
bool "GPIO FDT reset driver"
depends on FDT_GPIO