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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 authored and Anup Patel committed 2022-10-23 10:29:23 +05:30
1 parent ef9f02e7fb
commit 8234fc1bdf
5 files changed
+134
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platform/andes/ae350/Kconfig
+2
View File
@@ -8,6 +8,8 @@ config PLATFORM_ANDES_AE350
select FDT_SERIAL_UART8250
select FDT_TIMER
select FDT_TIMER_PLMT
select FDT_RESET
select FDT_RESET_ATCWDT200
default y
if PLATFORM_ANDES_AE350
platform/andes/ae350/platform.c
+3
View File
@@ -18,6 +18,7 @@
#include <sbi_utils/fdt/fdt_helper.h>
#include <sbi_utils/fdt/fdt_fixup.h>
#include <sbi_utils/irqchip/plic.h>
#include <sbi_utils/reset/fdt_reset.h>
#include <sbi_utils/serial/fdt_serial.h>
#include <sbi_utils/timer/fdt_timer.h>
#include "platform.h"
@@ -37,6 +38,8 @@ static int ae350_final_init(bool cold_boot)
if (!cold_boot)
return 0;
fdt_reset_init();
fdt = fdt_get_address();
fdt_fixups(fdt);