On 10 June 2015 at 22:22, Timur Tabi <timur@xxxxxxxxxxxxxx> wrote: > Fu Wei wrote: >> >> Another weakness of only using WOR is the timeout limited by this >> 32bit register. >> 10s @400MHz generic Timer >> >> I don't think this limit is good for a server, once the server is in a >> heavy load > > > Perhaps, but if that's the limitation of the hardware, then so be it. it is not the real limitation, if we use WCV, SBSA spec has mentioned that. ------ SBSA 2.3-------Page 23 ---------- Note: the watchdog offset register is 32 bits wide. This gives a maximum watch period of around 10s at a system counter frequency of 400MHz. If a larger watch period is required then the compare value can be programmed directly into the compare value register ------ SBSA 2.3-------Page 23 ---------- if some hardware doesn't support writing WCV, that means this hardware is non-standard SBSA watchdog. > > -- > Sent by an employee of the Qualcomm Innovation Center, Inc. > The Qualcomm Innovation Center, Inc. is a member of the > Code Aurora Forum, hosted by The Linux Foundation. -- Best regards, Fu Wei Software Engineer Red Hat Software (Beijing) Co.,Ltd.Shanghai Branch Ph: +86 21 61221326(direct) Ph: +86 186 2020 4684 (mobile) Room 1512, Regus One Corporate Avenue,Level 15, One Corporate Avenue,222 Hubin Road,Huangpu District, Shanghai,China 200021 -- 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
