diff options
author | Pali Rohár <pali@kernel.org> | 2022-02-22 18:50:22 +0300 |
---|---|---|
committer | Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> | 2022-02-22 19:04:20 +0300 |
commit | 26b982ca83210684b04191b73a7bbc02cdd3164f (patch) | |
tree | 47ea8af6ebd66be85945781b51cbded3aef3066d /Documentation/devicetree/bindings/pci | |
parent | 3767a9024252095654d4688ddc323b25404c00fc (diff) | |
download | linux-26b982ca83210684b04191b73a7bbc02cdd3164f.tar.xz |
dt-bindings: PCI: mvebu: Add num-lanes property
Controller driver needs to correctly configure PCIe link if it contains 1
or 4 SerDes PCIe lanes. Therefore add a new 'num-lanes' DT property for
mvebu PCIe controller. Property 'num-lanes' seems to be de-facto standard
way how number of lanes is specified in other PCIe controllers.
Link: https://lore.kernel.org/r/20220222155030.988-5-pali@kernel.org
Signed-off-by: Pali Rohár <pali@kernel.org>
Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com>
Acked-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation/devicetree/bindings/pci')
-rw-r--r-- | Documentation/devicetree/bindings/pci/mvebu-pci.txt | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/pci/mvebu-pci.txt b/Documentation/devicetree/bindings/pci/mvebu-pci.txt index 6173af6885f8..24225852bce0 100644 --- a/Documentation/devicetree/bindings/pci/mvebu-pci.txt +++ b/Documentation/devicetree/bindings/pci/mvebu-pci.txt @@ -77,6 +77,7 @@ and the following optional properties: - marvell,pcie-lane: the physical PCIe lane number, for ports having multiple lanes. If this property is not found, we assume that the value is 0. +- num-lanes: number of SerDes PCIe lanes for this link (1 or 4) - reset-gpios: optional GPIO to PERST# - reset-delay-us: delay in us to wait after reset de-assertion, if not specified will default to 100ms, as required by the PCIe specification. @@ -141,6 +142,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 58>; marvell,pcie-port = <0>; marvell,pcie-lane = <0>; + num-lanes = <1>; /* low-active PERST# reset on GPIO 25 */ reset-gpios = <&gpio0 25 1>; /* wait 20ms for device settle after reset deassertion */ @@ -161,6 +163,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 59>; marvell,pcie-port = <0>; marvell,pcie-lane = <1>; + num-lanes = <1>; clocks = <&gateclk 6>; }; @@ -177,6 +180,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 60>; marvell,pcie-port = <0>; marvell,pcie-lane = <2>; + num-lanes = <1>; clocks = <&gateclk 7>; }; @@ -193,6 +197,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 61>; marvell,pcie-port = <0>; marvell,pcie-lane = <3>; + num-lanes = <1>; clocks = <&gateclk 8>; }; @@ -209,6 +214,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 62>; marvell,pcie-port = <1>; marvell,pcie-lane = <0>; + num-lanes = <1>; clocks = <&gateclk 9>; }; @@ -225,6 +231,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 63>; marvell,pcie-port = <1>; marvell,pcie-lane = <1>; + num-lanes = <1>; clocks = <&gateclk 10>; }; @@ -241,6 +248,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 64>; marvell,pcie-port = <1>; marvell,pcie-lane = <2>; + num-lanes = <1>; clocks = <&gateclk 11>; }; @@ -257,6 +265,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 65>; marvell,pcie-port = <1>; marvell,pcie-lane = <3>; + num-lanes = <1>; clocks = <&gateclk 12>; }; @@ -273,6 +282,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 99>; marvell,pcie-port = <2>; marvell,pcie-lane = <0>; + num-lanes = <1>; clocks = <&gateclk 26>; }; @@ -289,6 +299,7 @@ pcie-controller { interrupt-map = <0 0 0 0 &mpic 103>; marvell,pcie-port = <3>; marvell,pcie-lane = <0>; + num-lanes = <1>; clocks = <&gateclk 27>; }; }; |