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Date: Tue, 13 Sep 2022 15:58:06 +0300
From: Vladimir Oltean <vladimir.oltean@....com>
To: netdev@...r.kernel.org
Cc: "David S. Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Claudiu Manoil <claudiu.manoil@....com>,
Microchip Linux Driver Support <UNGLinuxDriver@...rochip.com>,
Alexandre Belloni <alexandre.belloni@...tlin.com>,
Colin Foster <colin.foster@...advantage.com>,
Maxim Kochetkov <fido_max@...ox.ru>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v2 net-next] dt-bindings: net: dsa: convert ocelot.txt to dt-schema
Replace the free-form description of device tree bindings for VSC9959
and VSC9953 with a YAML formatted dt-schema description. This contains
more or less the same information, but reworded to be a bit more
succint.
Signed-off-by: Vladimir Oltean <vladimir.oltean@....com>
Reviewed-by: Maxim Kochetkov <fido_max@...ox.ru>
---
v1->v2:
- provide a more detailed description of the DT binding
- allow little-endian and big-endian properties
- allow interrupts property and make it required for vsc9959
- describe the meaning of the interrupts property
- reduce indentation in examples from 8 spaces to 4
- change license so it matches the driver
.../bindings/net/dsa/mscc,ocelot.yaml | 260 ++++++++++++++++++
.../devicetree/bindings/net/dsa/ocelot.txt | 213 --------------
2 files changed, 260 insertions(+), 213 deletions(-)
create mode 100644 Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml
delete mode 100644 Documentation/devicetree/bindings/net/dsa/ocelot.txt
diff --git a/Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml b/Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml
new file mode 100644
index 000000000000..8d93ed9c172c
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/dsa/mscc,ocelot.yaml
@@ -0,0 +1,260 @@
+# SPDX-License-Identifier: (GPL-2.0 OR MIT)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/dsa/mscc,ocelot.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip Ocelot Switch Family Device Tree Bindings
+
+maintainers:
+ - Vladimir Oltean <vladimir.oltean@....com>
+ - Claudiu Manoil <claudiu.manoil@....com>
+ - Alexandre Belloni <alexandre.belloni@...tlin.com>
+ - UNGLinuxDriver@...rochip.com
+
+description: |
+ There are multiple switches which are either part of the Ocelot-1 family, or
+ derivatives of this architecture. These switches can be found embedded in
+ various SoCs and accessed using MMIO, or as discrete chips and accessed over
+ SPI or PCIe. The present DSA binding shall be used when the host controlling
+ them performs packet I/O primarily through an Ethernet port of the switch
+ (which is attached to an Ethernet port of the host), rather than through
+ Frame DMA or register-based I/O.
+
+ VSC9953 (Seville):
+
+ This is found in the NXP T1040, where it is a memory-mapped platform
+ device.
+
+ The following PHY interface types are supported:
+
+ - phy-mode = "internal": on ports 8 and 9
+ - phy-mode = "sgmii": on ports 0, 1, 2, 3, 4, 5, 6, 7
+ - phy-mode = "qsgmii": on ports 0, 1, 2, 3, 4, 5, 6, 7
+ - phy-mode = "1000base-x": on ports 0, 1, 2, 3, 4, 5, 6, 7
+
+ VSC9959 (Felix):
+
+ This is found in the NXP LS1028A. It is a PCI device, part of the larger
+ enetc root complex. As a result, the ethernet-switch node is a sub-node of
+ the PCIe root complex node and its "reg" property conforms to the parent
+ node bindings, describing it as PF 5 of device 0, bus 0.
+
+ If any external switch port is enabled, the enetc PF2 (enetc_port2) should
+ be enabled as well. This is because the internal MDIO bus (exposed through
+ EA BAR 0) used to access the MAC PCS registers truly belongs to the enetc
+ port 2 and not to Felix.
+
+ The following PHY interface types are supported:
+
+ - phy-mode = "internal": on ports 4 and 5
+ - phy-mode = "sgmii": on ports 0, 1, 2, 3
+ - phy-mode = "qsgmii": on ports 0, 1, 2, 3
+ - phy-mode = "usxgmii": on ports 0, 1, 2, 3
+ - phy-mode = "1000base-x": on ports 0, 1, 2, 3
+ - phy-mode = "2500base-x": on ports 0, 1, 2, 3
+
+properties:
+ compatible:
+ enum:
+ - mscc,vsc9953-switch
+ - pci1957,eef0
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ description:
+ Used to signal availability of PTP TX timestamps, and state changes of
+ the MAC merge layer of ports that support Frame Preemption.
+
+ little-endian: true
+ big-endian: true
+
+required:
+ - compatible
+ - reg
+
+allOf:
+ - $ref: dsa.yaml#
+ - if:
+ properties:
+ compatible:
+ const: pci1957,eef0
+ then:
+ required:
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ # Felix VSC9959 (NXP LS1028A)
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ pcie { /* Integrated Endpoint Root Complex */
+ #address-cells = <3>;
+ #size-cells = <2>;
+
+ ethernet-switch@0,5 {
+ compatible = "pci1957,eef0";
+ reg = <0x000500 0 0 0 0>;
+ interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+
+ ethernet-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy0>;
+ managed = "in-band-status";
+ };
+
+ port@1 {
+ reg = <1>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy1>;
+ managed = "in-band-status";
+ };
+
+ port@2 {
+ reg = <2>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy2>;
+ managed = "in-band-status";
+ };
+
+ port@3 {
+ reg = <3>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy3>;
+ managed = "in-band-status";
+ };
+
+ port@4 {
+ reg = <4>;
+ ethernet = <&enetc_port2>;
+ phy-mode = "internal";
+
+ fixed-link {
+ speed = <2500>;
+ full-duplex;
+ pause;
+ };
+ };
+
+ port@5 {
+ reg = <5>;
+ ethernet = <&enetc_port3>;
+ phy-mode = "internal";
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ pause;
+ };
+ };
+ };
+ };
+ };
+ # Seville VSC9953 (NXP T1040)
+ - |
+ soc {
+ #address-cells = <1>;
+ #size-cells = <1>;
+
+ ethernet-switch@...000 {
+ compatible = "mscc,vsc9953-switch";
+ reg = <0x800000 0x290000>;
+ little-endian;
+
+ ethernet-ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy0>;
+ managed = "in-band-status";
+ };
+
+ port@1 {
+ reg = <1>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy1>;
+ managed = "in-band-status";
+ };
+
+ port@2 {
+ reg = <2>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy2>;
+ managed = "in-band-status";
+ };
+
+ port@3 {
+ reg = <3>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy3>;
+ managed = "in-band-status";
+ };
+
+ port@4 {
+ reg = <4>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy4>;
+ managed = "in-band-status";
+ };
+
+ port@5 {
+ reg = <5>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy5>;
+ managed = "in-band-status";
+ };
+
+ port@6 {
+ reg = <6>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy6>;
+ managed = "in-band-status";
+ };
+
+ port@7 {
+ reg = <7>;
+ phy-mode = "qsgmii";
+ phy-handle = <&phy7>;
+ managed = "in-band-status";
+ };
+
+ port@8 {
+ reg = <8>;
+ phy-mode = "internal";
+ ethernet = <&enet0>;
+
+ fixed-link {
+ speed = <2500>;
+ full-duplex;
+ pause;
+ };
+ };
+
+ port@9 {
+ reg = <9>;
+ phy-mode = "internal";
+ ethernet = <&enet1>;
+
+ fixed-link {
+ speed = <2500>;
+ full-duplex;
+ pause;
+ };
+ };
+ };
+ };
+ };
diff --git a/Documentation/devicetree/bindings/net/dsa/ocelot.txt b/Documentation/devicetree/bindings/net/dsa/ocelot.txt
deleted file mode 100644
index 7a271d070b72..000000000000
--- a/Documentation/devicetree/bindings/net/dsa/ocelot.txt
+++ /dev/null
@@ -1,213 +0,0 @@
-Microchip Ocelot switch driver family
-=====================================
-
-Felix
------
-
-Currently the switches supported by the felix driver are:
-
-- VSC9959 (Felix)
-- VSC9953 (Seville)
-
-The VSC9959 switch is found in the NXP LS1028A. It is a PCI device, part of the
-larger ENETC root complex. As a result, the ethernet-switch node is a sub-node
-of the PCIe root complex node and its "reg" property conforms to the parent
-node bindings:
-
-* reg: Specifies PCIe Device Number and Function Number of the endpoint device,
- in this case for the Ethernet L2Switch it is PF5 (of device 0, bus 0).
-
-It does not require a "compatible" string.
-
-The interrupt line is used to signal availability of PTP TX timestamps and for
-TSN frame preemption.
-
-For the external switch ports, depending on board configuration, "phy-mode" and
-"phy-handle" are populated by board specific device tree instances. Ports 4 and
-5 are fixed as internal ports in the NXP LS1028A instantiation.
-
-The CPU port property ("ethernet") configures the feature called "NPI port" in
-the Ocelot hardware core. The CPU port in Ocelot is a set of queues, which are
-connected, in the Node Processor Interface (NPI) mode, to an Ethernet port.
-By default, in fsl-ls1028a.dtsi, the NPI port is assigned to the internal
-2.5Gbps port@4, but can be moved to the 1Gbps port@5, depending on the specific
-use case. Moving the NPI port to an external switch port is hardware possible,
-but there is no platform support for the Linux system on the LS1028A chip to
-operate as an entire slave DSA chip. NPI functionality (and therefore DSA
-tagging) is supported on a single port at a time.
-
-Any port can be disabled (and in fsl-ls1028a.dtsi, they are indeed all disabled
-by default, and should be enabled on a per-board basis). But if any external
-switch port is enabled at all, the ENETC PF2 (enetc_port2) should be enabled as
-well, regardless of whether it is configured as the DSA master or not. This is
-because the Felix PHYLINK implementation accesses the MAC PCS registers, which
-in hardware truly belong to the ENETC port #2 and not to Felix.
-
-Supported PHY interface types (appropriate SerDes protocol setting changes are
-needed in the RCW binary):
-
-* phy_mode = "internal": on ports 4 and 5
-* phy_mode = "sgmii": on ports 0, 1, 2, 3
-* phy_mode = "qsgmii": on ports 0, 1, 2, 3
-* phy_mode = "usxgmii": on ports 0, 1, 2, 3
-* phy_mode = "2500base-x": on ports 0, 1, 2, 3
-
-For the rest of the device tree binding definitions, which are standard DSA and
-PCI, refer to the following documents:
-
-Documentation/devicetree/bindings/net/dsa/dsa.txt
-Documentation/devicetree/bindings/pci/pci.txt
-
-Example:
-
-&soc {
- pcie@...000000 { /* Integrated Endpoint Root Complex */
- ethernet-switch@0,5 {
- reg = <0x000500 0 0 0 0>;
- /* IEP INT_B */
- interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
-
- ports {
- #address-cells = <1>;
- #size-cells = <0>;
-
- /* External ports */
- port@0 {
- reg = <0>;
- label = "swp0";
- };
-
- port@1 {
- reg = <1>;
- label = "swp1";
- };
-
- port@2 {
- reg = <2>;
- label = "swp2";
- };
-
- port@3 {
- reg = <3>;
- label = "swp3";
- };
-
- /* Tagging CPU port */
- port@4 {
- reg = <4>;
- ethernet = <&enetc_port2>;
- phy-mode = "internal";
-
- fixed-link {
- speed = <2500>;
- full-duplex;
- };
- };
-
- /* Non-tagging CPU port */
- port@5 {
- reg = <5>;
- phy-mode = "internal";
- status = "disabled";
-
- fixed-link {
- speed = <1000>;
- full-duplex;
- };
- };
- };
- };
- };
-};
-
-The VSC9953 switch is found inside NXP T1040. It is a platform device with the
-following required properties:
-
-- compatible:
- Must be "mscc,vsc9953-switch".
-
-Supported PHY interface types (appropriate SerDes protocol setting changes are
-needed in the RCW binary):
-
-* phy_mode = "internal": on ports 8 and 9
-* phy_mode = "sgmii": on ports 0, 1, 2, 3, 4, 5, 6, 7
-* phy_mode = "qsgmii": on ports 0, 1, 2, 3, 4, 5, 6, 7
-
-Example:
-
-&soc {
- ethernet-switch@...000 {
- #address-cells = <0x1>;
- #size-cells = <0x0>;
- compatible = "mscc,vsc9953-switch";
- little-endian;
- reg = <0x800000 0x290000>;
-
- ports {
- #address-cells = <0x1>;
- #size-cells = <0x0>;
-
- port@0 {
- reg = <0x0>;
- label = "swp0";
- };
-
- port@1 {
- reg = <0x1>;
- label = "swp1";
- };
-
- port@2 {
- reg = <0x2>;
- label = "swp2";
- };
-
- port@3 {
- reg = <0x3>;
- label = "swp3";
- };
-
- port@4 {
- reg = <0x4>;
- label = "swp4";
- };
-
- port@5 {
- reg = <0x5>;
- label = "swp5";
- };
-
- port@6 {
- reg = <0x6>;
- label = "swp6";
- };
-
- port@7 {
- reg = <0x7>;
- label = "swp7";
- };
-
- port@8 {
- reg = <0x8>;
- phy-mode = "internal";
- ethernet = <&enet0>;
-
- fixed-link {
- speed = <2500>;
- full-duplex;
- };
- };
-
- port@9 {
- reg = <0x9>;
- phy-mode = "internal";
- status = "disabled";
-
- fixed-link {
- speed = <2500>;
- full-duplex;
- };
- };
- };
- };
-};
--
2.34.1
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