Hi Stefan,
> On 19 Sep 2024, at 12:36, Stefan Agner <ste...@agner.ch> wrote: > > Hi Ivan, > > I am looking into enabling NVMe boot support using U-Boot on Raspberry > Pi 5. Which brings me to some questions wrt PCIe support (see below). > > On 2024-01-10 13:29, Ivan T. Ivanov wrote: >> >> * I am dropping PCIe patch for now. I made some progress on porting changes >> from vendor Linux tree to U-Boot. Unfortunatly testing it is little bit >> tricky. They are many devices behind PCIe, but more or less all of them >> requires missing either "reset-controller" or "clock-controller" or >> "pin-controller" drivers. I was able to probe "cdns,macb" device, but >> access to ethernet PHY over MDIO bus is stucking. Then I ported >> "raspberrypi,rp1-adc" driver from vendor Linux tree, but it requires >> missing clock. And on top of that machine that I used for developing this >> crashed and I lost my PCIe changes :-|. Anyway. > > Have you tried using a M.2 HAT? This likely won't require much in terms > of enabling the device. > > You write that you made some progress, is that compared to v3? Do you > mind sharing the latest version of your patches? No further progress on PCIe for U-Boot from my side was made, sorry. Stan is working on adding support for 2712 PCIe in Linux [1]. Perhaps once this is complete we can work on adding U-Boot support for the same, unless someone don’t beat us, of course. Regards, Ivan
