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dt-bindings: net: dsa: sja1105: convert to YAML schema
Since the sja1105 driver no longer has any custom device tree properties, the conversion is trivial. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
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Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
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Documentation/devicetree/bindings/net/dsa/nxp,sja1105.yaml
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/net/dsa/nxp,sja1105.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: NXP SJA1105 Automotive Ethernet Switch Family Device Tree Bindings
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description:
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The SJA1105 SPI interface requires a CS-to-CLK time (t2 in UM10944.pdf) of at
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least one half of t_CLK. At an SPI frequency of 1MHz, this means a minimum
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cs_sck_delay of 500ns. Ensuring that this SPI timing requirement is observed
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depends on the SPI bus master driver.
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allOf:
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- $ref: "dsa.yaml#"
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maintainers:
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- Vladimir Oltean <vladimir.oltean@nxp.com>
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properties:
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compatible:
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enum:
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- nxp,sja1105e
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- nxp,sja1105t
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- nxp,sja1105p
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- nxp,sja1105q
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- nxp,sja1105r
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- nxp,sja1105s
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reg:
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maxItems: 1
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required:
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- compatible
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- reg
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unevaluatedProperties: false
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examples:
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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ethernet-switch@1 {
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reg = <0x1>;
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compatible = "nxp,sja1105t";
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ethernet-ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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phy-handle = <&rgmii_phy6>;
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phy-mode = "rgmii-id";
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reg = <0>;
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};
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port@1 {
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phy-handle = <&rgmii_phy3>;
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phy-mode = "rgmii-id";
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reg = <1>;
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};
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port@2 {
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phy-handle = <&rgmii_phy4>;
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phy-mode = "rgmii-id";
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reg = <2>;
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};
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port@3 {
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phy-mode = "rgmii-id";
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reg = <3>;
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};
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port@4 {
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ethernet = <&enet2>;
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phy-mode = "rgmii";
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reg = <4>;
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fixed-link {
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speed = <1000>;
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full-duplex;
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};
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};
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};
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};
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};
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NXP SJA1105 switch driver
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=========================
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Required properties:
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- compatible:
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Must be one of:
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- "nxp,sja1105e"
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- "nxp,sja1105t"
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- "nxp,sja1105p"
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- "nxp,sja1105q"
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- "nxp,sja1105r"
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- "nxp,sja1105s"
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Although the device ID could be detected at runtime, explicit bindings
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are required in order to be able to statically check their validity.
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For example, SGMII can only be specified on port 4 of R and S devices,
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and the non-SGMII devices, while pin-compatible, are not equal in terms
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of support for RGMII internal delays (supported on P/Q/R/S, but not on
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E/T).
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See Documentation/devicetree/bindings/net/dsa/dsa.txt for the list of standard
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DSA required and optional properties.
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Other observations
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------------------
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The SJA1105 SPI interface requires a CS-to-CLK time (t2 in UM10944) of at least
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one half of t_CLK. At an SPI frequency of 1MHz, this means a minimum
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cs_sck_delay of 500ns. Ensuring that this SPI timing requirement is observed
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depends on the SPI bus master driver.
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Example
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-------
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Ethernet switch connected via SPI to the host, CPU port wired to enet2:
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arch/arm/boot/dts/ls1021a-tsn.dts:
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/* SPI controller of the LS1021 */
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&dspi0 {
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sja1105@1 {
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reg = <0x1>;
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#address-cells = <1>;
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#size-cells = <0>;
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compatible = "nxp,sja1105t";
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spi-max-frequency = <4000000>;
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fsl,spi-cs-sck-delay = <1000>;
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fsl,spi-sck-cs-delay = <1000>;
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ports {
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#address-cells = <1>;
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#size-cells = <0>;
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port@0 {
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/* ETH5 written on chassis */
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label = "swp5";
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phy-handle = <&rgmii_phy6>;
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phy-mode = "rgmii-id";
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reg = <0>;
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};
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port@1 {
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/* ETH2 written on chassis */
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label = "swp2";
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phy-handle = <&rgmii_phy3>;
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phy-mode = "rgmii-id";
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reg = <1>;
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};
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port@2 {
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/* ETH3 written on chassis */
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label = "swp3";
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phy-handle = <&rgmii_phy4>;
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phy-mode = "rgmii-id";
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reg = <2>;
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};
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port@3 {
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/* ETH4 written on chassis */
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phy-handle = <&rgmii_phy5>;
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label = "swp4";
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phy-mode = "rgmii-id";
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reg = <3>;
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};
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port@4 {
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/* Internal port connected to eth2 */
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ethernet = <&enet2>;
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phy-mode = "rgmii";
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reg = <4>;
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fixed-link {
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speed = <1000>;
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full-duplex;
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};
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};
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};
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};
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};
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/* MDIO controller of the LS1021 */
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&mdio0 {
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/* BCM5464 */
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rgmii_phy3: ethernet-phy@3 {
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reg = <0x3>;
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};
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rgmii_phy4: ethernet-phy@4 {
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reg = <0x4>;
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};
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rgmii_phy5: ethernet-phy@5 {
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reg = <0x5>;
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};
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rgmii_phy6: ethernet-phy@6 {
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reg = <0x6>;
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};
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};
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/* Ethernet master port of the LS1021 */
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&enet2 {
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phy-connection-type = "rgmii";
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status = "ok";
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fixed-link {
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speed = <1000>;
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full-duplex;
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};
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};
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