Re: MTIME update frequency
On Tue, Nov 16, 2021 at 12:49:11PM -0500, Jonathan Behrens wrote:
Adding more configuration options increases complexity. Under the currentI hope I am reading the right current draft. The current draft states:
"The ACLINT MTIME update frequency (i.e. hardware clock) must be between 10 MHz and 100 MHz, and updates must be strictly monotonic."
So a value of 100,000 could mean a delay between 100ms to 1 ms. So per current draft it would be wrong for software to assume 100,000 implies 1ms.
between systems, then we have to do a bunch more specification andAn enumeration of MTIME frequency is needed per current draft. I beleive the device-tree binding for RISC-V uses the timebase-frequency property under the cpus node.
Is further specification needed?