| Message ID | 20220610085706.15741-7-Sergey.Semin@baikalelectronics.ru (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | PCI: dwc: Add generic resources and Baikal-T1 support | expand |
On Fri, 10 Jun 2022 11:56:54 +0300, Serge Semin wrote: > In accordance with [1] the CX_NFUNC IP-core synthesize parameter is > responsible for the number of physical functions to support in the EP > mode. Its upper limit is 32. Let's use it to constrain the number of > PCIe functions the DW PCIe EP DT-nodes can advertise. > > [1] Synopsys DesignWare Cores PCI Express Controller Databook - DWC PCIe > Endpoint, Version 5.40a, March 2019, p. 887. > > Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> > > --- > > Changelog v3: > - This is a new patch unpinned from the next one: > https://lore.kernel.org/linux-pci/20220503214638.1895-2-Sergey.Semin@baikalelectronics.ru/ > by the Rob' request. (@Rob) > --- > Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml | 4 ++++ > 1 file changed, 4 insertions(+) > Reviewed-by: Rob Herring <robh@kernel.org>
diff --git a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml index b04ce7ddb796..9411366d6ca7 100644 --- a/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml +++ b/Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml @@ -53,6 +53,9 @@ properties: items: enum: [dbi, dbi2, config, atu, addr_space, link, atu_dma, appl] + max-functions: + maximum: 32 + required: - compatible - reg @@ -73,4 +76,5 @@ examples: phy-names = "pcie0", "pcie1", "pcie2", "pcie3"; max-link-speed = <3>; + max-functions = /bits/ 8 <4>; };
In accordance with [1] the CX_NFUNC IP-core synthesize parameter is responsible for the number of physical functions to support in the EP mode. Its upper limit is 32. Let's use it to constrain the number of PCIe functions the DW PCIe EP DT-nodes can advertise. [1] Synopsys DesignWare Cores PCI Express Controller Databook - DWC PCIe Endpoint, Version 5.40a, March 2019, p. 887. Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> --- Changelog v3: - This is a new patch unpinned from the next one: https://lore.kernel.org/linux-pci/20220503214638.1895-2-Sergey.Semin@baikalelectronics.ru/ by the Rob' request. (@Rob) --- Documentation/devicetree/bindings/pci/snps,dw-pcie-ep.yaml | 4 ++++ 1 file changed, 4 insertions(+)