dt-bindings: updated max-link-speed for newer generations
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Quoted 34 lines · Bjorn Helgaas
Possible subject:
dt-bindings: Add gen5, gen6 max-link-speed values
Quoted 15 lines · Ben Dooks
Add updated max-link-speed values for newer generation PCIe link speeds.
Signed-off-by Ben Dooks <[email protected]>Cc Krzysztof Kozlowski <[email protected]>--- Documentation/devicetree/bindings/pci/pci.txt | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-)Documentation/devicetree/bindings/pci/pci.txt +0
-0Documentation/devicetree/bindings/pci/pci.txt driver implementation may support the following properties: · line 27
Quoted 8 lines
Documentation/devicetree/bindings/pci/pci.txt +3
-2@@ -22,8 +22,9 @@ driver implementation may support the following properties: If present this property specifies PCI gen for link capability. Host drivers could add this as a strategy to avoid unnecessary operation for unsupported link speed, for instance, trying to do training for - unsupported link speed, etc. Must be '4' for gen4, '3' for gen3, '2' - for gen2, and '1' for gen1. Any other values are invalid. + unsupported link speed, etc. Must be '6' for gen6, '5' for gen5, + '4' for gen4, '3' for gen3, '2' for gen2, and '1' for gen1. + Any other values are invalid.I really wish we'd used values with some connection to the actual speed, e.g., "16" for 16 GT/s. These "gen X" values are a real hassle to convert back to the speed. But I guess that's water under the bridge.
Quoted 8 lines
Maybe we should annotate the documentation here, though, e.g.,
'6' for gen6 (64.0 GT/s), '5' for gen5 (32.0 GT/s), ...Do I have that right? I don't see "gen5" etc in the specs themselves, so this is just based on Google.
Bjorn
I checked the wikipedia, I've been working on a yet-to-be-released device that uses a gen5 phy so updating this would be useful.
Signature · 4 lines
Ben Dooks http://www.codethink.co.uk/ Senior Engineer Codethink - Providing Genius https://www.codethink.co.uk/privacy.html