diff mbox series

[04/11] dt-bindings: PCI: mvebu: Add num-lanes property

Message ID 20220105150239.9628-5-pali@kernel.org (mailing list archive)
State Superseded
Delegated to: Lorenzo Pieralisi
Headers show
Series PCI: mvebu: subsystem ids, AER and INTx | expand

Commit Message

Pali Rohár Jan. 5, 2022, 3:02 p.m. UTC 
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.

Signed-off-by: Pali Rohár <pali@kernel.org>
---
 Documentation/devicetree/bindings/pci/mvebu-pci.txt | 11 +++++++++++
 1 file changed, 11 insertions(+)

Comments

Rob Herring (Arm) Jan. 12, 2022, 1:29 a.m. UTC | #1 
On Wed, 05 Jan 2022 16:02:32 +0100, Pali Rohár wrote:
> 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.
> 
> Signed-off-by: Pali Rohár <pali@kernel.org>
> ---
>  Documentation/devicetree/bindings/pci/mvebu-pci.txt | 11 +++++++++++
>  1 file changed, 11 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>
diff mbox series

Patch

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>;
 	};
 };