Re: [U-Boot] [PATCH v4] at91: Don't initialize watchdog if CONFIG_SKIP_WATCHDOG_INIT is defined

2010-08-20 Thread Mike Frysinger
On Friday, August 20, 2010 08:31:22 Reinhard Meyer wrote: just to bring in my thoughts to this watchdog issue, and to explain what I think the issue is here: 1. on (all?) AT91SAM9 devices the watchdog is initially enabled (after Reset) with a 16 second timeout (provides a 32kHz Xtal is

Re: [U-Boot] [PATCH v4] at91: Don't initialize watchdog if CONFIG_SKIP_WATCHDOG_INIT is defined

2010-08-20 Thread Reinhard Meyer
Dear Mike Frysinger, On Friday, August 20, 2010 08:31:22 Reinhard Meyer wrote: just to bring in my thoughts to this watchdog issue, and to explain what I think the issue is here: 1. on (all?) AT91SAM9 devices the watchdog is initially enabled (after Reset) with a 16 second timeout (provides

Re: [U-Boot] [PATCH v4] at91: Don't initialize watchdog if CONFIG_SKIP_WATCHDOG_INIT is defined

2010-08-14 Thread Mike Frysinger
On Mon, Aug 9, 2010 at 7:42 AM, Alexander Stein wrote: Am Montag, 9. August 2010, 09:13:45 schrieb Mike Frysinger: On AT91 the watchdog mode register can only be written once after reset. If this register is written by u-boot e.g. a Linux driver can't reconfigure the watchdog later. If the

[U-Boot] [PATCH v4] at91: Don't initialize watchdog if CONFIG_SKIP_WATCHDOG_INIT is defined

2010-08-09 Thread Alexander Stein
On AT91 the watchdog mode register can only be written once after reset. If this register is written by u-boot e.g. a Linux driver can't reconfigure the watchdog later. If the watchdog is left untouched this is possible. Without touching the mode register the watchdog has a default setup and

Re: [U-Boot] [PATCH v4] at91: Don't initialize watchdog if CONFIG_SKIP_WATCHDOG_INIT is defined

2010-08-09 Thread Mike Frysinger
On Mon, Aug 9, 2010 at 2:40 AM, Alexander Stein wrote: On AT91 the watchdog mode register can only be written once after reset. If this register is written by u-boot e.g. a Linux driver can't reconfigure the watchdog later. If the watchdog is left untouched this is possible. Without touching

Re: [U-Boot] [PATCH v4] at91: Don't initialize watchdog if CONFIG_SKIP_WATCHDOG_INIT is defined

2010-08-09 Thread Alexander Stein
Hello Mike, Am Montag, 9. August 2010, 09:13:45 schrieb Mike Frysinger: On AT91 the watchdog mode register can only be written once after reset. If this register is written by u-boot e.g. a Linux driver can't reconfigure the watchdog later. If the watchdog is left untouched this is