On Tue, Jan 19, 2021 at 02:38:32AM +0000, Zulkifli, Muhammad Husaini wrote: [...] > > I try to hook up the DT last night. Seems like the SCMI Protocol 17 is not > implemented at ATF side. I had guessed that. > Double check with ATF Team, currently we don't have SCMI voltage domain > control in ARM Trusted Firmware yet as of now, that is why even if I map the > function to scmi, my call will be fail. Correct, but if you already have this custom SMCCC for voltage already implemented in TF-A, I don't see it is a big deal to support voltage protocol there. > > [ 2.648989] arm-scmi firmware:scmi: SCMI Notifications - Core Enabled. > [ 2.656157] arm-scmi firmware:scmi: SCMI Protocol v1.0 'INTEL:KMB' Firmware version 0x1 > [ 2.664513] arm-scmi firmware:scmi: SCMI protocol 23 not implemented > [ 2.675898] arm-scmi firmware:scmi: SCMI protocol 17 not implemented > > Any possibilities that for UHS patch we go with my current regulator driver > implementation? Sorry absolutely no. If this platform was not using SCMI, I wouldn't have pushed back hard on this custom SMCCC. Please update TF-A to add this support. There is no point in having custom interface just for this when everything else is already using SCMI on this platform. -- Regards, Sudeep
