On Mon, Oct 21, 2024 at 11:53:31AM +0300, Abel Vesa wrote: > On 24-10-21 09:33:20, Johan Hovold wrote: > > On Fri, Oct 18, 2024 at 04:37:36PM +0300, Abel Vesa wrote: > > > The PCIe 6a PHY on X1E80100 uses both resets in 4-lanes mode as well. > > > > Again, this is a bit misleading as PCIe6a is using the > > 'qcom,x1e80100-qmp-gen4x4-pcie-phy' compatible in both 4-lane and 2-lane > > mode even if the original dtsi got this wrong. > > But the lane config within the phy driver differs based on the > compatible. No, it differs based on the value of the TCSR register. > > PCIe6b will be using 'qcom,x1e80100-qmp-gen4x2-pcie-phy' as that one is > > a 2-lane PHY. > > Wouldn't the PCIe6a also have to switch to gen4x2 compatible on a board > where PCIe6b is used? Nope, it stays the same (e.g. as the hardware block is the same). > > Perhaps you can rephrase this so that it doesn't sound like you are > > using compatibles to configure PCIe6a? > > But currently we do configure PCIe6a based on compatibles. > > What am I missing ? No, as we've discussed in multiple threads already: https://lore.kernel.org/all/ZwPDxd9JJbgDeJTi@xxxxxxxxxxxxxxxxxxxx/ https://lore.kernel.org/lkml/ZtG2dUVkdwBpBbix@xxxxxxxxxxxxxxxxxxxx/ Johan
