Hi Stefan Roese
Thanks for your review. Here is my log from uboot master. And i add the debug log as below:
----------------------------------------------- U-Boot 2022.10-rc4-00038-ge3fce5e560-dirty (Sep 15 2022 - 09:58:25 +0800)
CPU: NPCM750 A1 @ Model: Nuvoton npcm750 Development Board (Device Tree) DRAM: 464 MiB RNG: NPCM RNG module bind OK OTP: NPCM OTP module bind OK AES: NPCM AES module bind OK SHA: NPCM SHA module bind OK Core: 210 devices, 22 uclasses, devicetree: separate WDT: Started watchdog@801C without servicing (60s timeout) MMC: sdhci0@f0842000: 0 Loading Environment from SPIFlash... SF: Detected mx66l51235l with page size 256 Bytes, erase size 64 KiB, total 64 MiB OK In: serial@1000 Out: serial@1000 Err: serial@1000 Net: eth0: eth@f0802000, eth1: eth@f0825000 Hit any key to stop autoboot: 0 U-Boot>reset resetting ... jim[wdt_reboot_request] jim[npcm_wdt_expire_now] jim[npcm_wdt_reset]
================================================ BootBlock by Nuvoton Technology Corp. Ver 10.10.17 ================================================
BB Basic Mar 24 2021 12:06:08
CORSTC = 0x4fff9f9d WD0RCR = 0x4fff9f9d WD1RCR = 0x4fff9f9d WD2RCR = 0x4fff9f9d SWRSTC1 = 0x4fff9f9d SWRSTC2 = 0x4fff9f9d SWRSTC3 = 0x4fff9f9d
----------------------------------------------------
If you have any suggestions, please provide to me. I will follow to modify it.
Best regards, Jim
On Thu, Sep 15, 2022 at 10:23 AM JJLIU0@nuvoton.com JJLIU0@nuvoton.com wrote:
-----Original Message----- From: Stefan Roese sr@denx.de Sent: Wednesday, September 14, 2022 2:27 PM To: Jim Liu jim.t90615@gmail.com; CS20 JJLiu0 JJLIU0@nuvoton.com; CS20 YSChu YSCHU@nuvoton.com; CS20 KWLiu KWLIU@nuvoton.com Cc: u-boot@lists.denx.de Subject: Re: [PATCH v1] wdt: nuvoton: add expire function for generic reset
On 13.09.22 08:19, Jim Liu wrote:
Add expire_now function for generic sysreset request
Signed-off-by: Jim Liu JJLIU0@nuvoton.com
drivers/watchdog/npcm_wdt.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/watchdog/npcm_wdt.c b/drivers/watchdog/npcm_wdt.c index 256020f5d3..e56aa0ebe1 100644 --- a/drivers/watchdog/npcm_wdt.c +++ b/drivers/watchdog/npcm_wdt.c @@ -75,6 +75,11 @@ static int npcm_wdt_reset(struct udevice *dev) return 0; }
+static int npcm_wdt_expire_now(struct udevice *dev, ulong flags) {
return npcm_wdt_reset(dev);+}
Does this really work? You are calling the watchdog reset function here in the expire function, which will just reset / trigger the WDT. I would not expect that this will expire the WDT and result in a CPU / SoC reset.
Thanks, Stefan
static int npcm_wdt_of_to_plat(struct udevice *dev) { struct npcm_wdt_priv *priv = dev_get_priv(dev); @@ -87,6 +92,7 @@ static int npcm_wdt_of_to_plat(struct udevice *dev) }
static const struct wdt_ops npcm_wdt_ops = {
.expire_now = npcm_wdt_expire_now, .start = npcm_wdt_start, .reset = npcm_wdt_reset, .stop = npcm_wdt_stop,Viele Grüße, Stefan Roese
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