Hi Peter, On Tue, Feb 06, 2024 at 05:09:13PM +0000, Peter Griffin wrote: > Hi Eric, > > + Will > > On Tue, 6 Feb 2024 at 03:45, Eric Biggers <ebiggers@xxxxxxxxxx> wrote: > > > > Hi Peter! Thanks for all the hard work you've been doing on upstreaming support > > for Tensor/GS101. I've tested that the latest upstream kernel is now able to > > boot to a serial console on Pixel 6. > > Thanks for testing :) > > > > I'm wondering if you have any plans to upstream support for the UFS storage on > > that platform? It should be able to use the already-upstream > > drivers/ufs/host/ufs-exynos.c driver, but changes may be required; I'm not sure > > how many. I'm interested in this mainly because I'd like to upstream some > > patches related to inline encryption, and that depends on UFS storage working. > > > > I'm interested in helping with this, but I wanted to check to see if you know > > about any existing plans first. > > We certainly want to add support for UFS upstream, and if you can help > out with enabling it that would be great! It would free us up to work > on enabling something else in parallel. From a first pass analysis of > the downstream UFS code it looks like ufs phy driver likely needs the > most attention. > > The last UFS dependency (that I'm aware of) that is missing currently > is clock support for cmu_hsi2 (which I was planning on working on as > my next task). Also the UFS phy accesses PMU registers so that will > require my exynos-pmu [1] series but that is hopefully close to being > merged. > > So I think we are quite close to having all the UFS dependencies in > place. Shall I ping you once I have some code for cmu_hsi2, and > hopefully that should be enough for you to start working on the UFS > driver and phy? > > Thanks, > > Peter Yes, let me know as soon as you have some code for cmu_hsi2, and I'll try to get UFS working. I don't know how hard it will be, though, so it's possible I'll need help from others. Thanks, - Eric
