2014-03-29 14:33 GMT+01:00 Alexander Shiyan <shc_work@xxxxxxx>: > Sat, 29 Mar 2014 14:16:40 +0100 от Hauke Mehrtens <hauke@xxxxxxxxxx>: >> The Huawei E970, the only device with a bcm47xx SoC which uses this gpio >> watchdog I know of, needs the gpio driver very early. It is not possible >> to deactivate the watchdogs, so it has to get trigged very early in the > > Why it cannot be deactivated? > The driver has been designed for ADM70x ICs, where watchdog is > deactivated by set GPIO to tristate. I'm not sure how to achieve tri-state with Broadcom SoC. Our code is in: http://git.kernel.org/cgit/linux/kernel/git/torvalds/linux.git/tree/drivers/bcma/driver_gpio.c We have bcma_chipco_gpio_control that sets if GPIO is controlled by ChipCommon (part of the SoC, one of many cores). Maybe setting GPIO to be *not* controlled by ChipCommon will make it tri-state? Any other ideas? -- Rafał -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
