Messages in this thread | | | Date | Tue, 22 Feb 2022 10:23:35 +0000 | Subject | Re: [[PATCHv3]] PCI: fu740: Force gen1 for initial device probe | From | Ben Dooks <> |
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On 21/02/2022 20:38, Ben Dooks wrote: > The fu740 PCIe core does not probe any devices on the SiFive Unmatched > board without this fix from U-Boot (or having U-Boot explicitly start > the PCIe via either boot-script or user command). > > The fix claims to set the link-speed to gen1 to get the probe > to work. As this is a copy from U-Boot, the code is assumed to be > correct and does fix the issue on the Unmatched. The code is at: > https://source.denx.de/u-boot/u-boot/-/blob/master/drivers/pci/pcie_dw_sifive.c#L271 > > The code has been this way since the driver was commited in: > https://source.denx.de/u-boot/u-boot/-/commit/416395c772018c6bf52aad36aca163115001793f >
Apologies everyone, messed up sending v3 so re-sent as v4.
-- Ben Dooks http://www.codethink.co.uk/ Senior Engineer Codethink - Providing Genius
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