Re: [PATCH v2 3/7] dt-bindings: net: dsa: mediatek,mt7530: update examples
From: Rob Herring <robh@kernel.org>
Date: 2022-08-16 21:02:36
Also in:
linux-arm-kernel, linux-devicetree, linux-mediatek, lkml
On Sat, Aug 13, 2022 at 06:44:11PM +0300, Arınç ÜNAL wrote:
Update the examples on the binding. - Add examples which include a wide variation of configurations. - Make example comments YAML comment instead of DT binding comment. - Define examples from platform to make the bindings clearer. - Add interrupt controller to the examples. Include header file for interrupt. - Change reset line for MT7621 examples. - Pretty formatting for the examples. - Change switch reg to 0. - Change port labels to fit the example, change port 4 label to wan. - Change ethernet-ports to ports.
Again, why?
quoted hunk ↗ jump to hunk
Signed-off-by: Arınç ÜNAL <redacted> --- .../bindings/net/dsa/mediatek,mt7530.yaml | 663 +++++++++++++----- 1 file changed, 502 insertions(+), 161 deletions(-)diff --git a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml index 4c99266ce82a..cc87f48d4d07 100644 --- a/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml +++ b/Documentation/devicetree/bindings/net/dsa/mediatek,mt7530.yaml@@ -210,144 +210,374 @@ allOf: unevaluatedProperties: false examples: + # Example 1: Standalone MT7530 - | #include <dt-bindings/gpio/gpio.h> - mdio { - #address-cells = <1>; - #size-cells = <0>; - switch@0 { - compatible = "mediatek,mt7530"; - reg = <0>; - - core-supply = <&mt6323_vpa_reg>; - io-supply = <&mt6323_vemc3v3_reg>; - reset-gpios = <&pio 33 GPIO_ACTIVE_HIGH>; - - ethernet-ports { + + platform { + ethernet {
Don't need these nodes.
+ mdio {
#address-cells = <1>;
#size-cells = <0>;
- port@0 {
+
+ switch@0 {
+ compatible = "mediatek,mt7530";
reg = <0>;
- label = "lan0";
- };
- port@1 {
- reg = <1>;
- label = "lan1";
- };
+ reset-gpios = <&pio 33 0>;
- port@2 {
- reg = <2>;
- label = "lan2";
- };
+ core-supply = <&mt6323_vpa_reg>;
+ io-supply = <&mt6323_vemc3v3_reg>;
+
+ ports {'ports' is for the DT graph binding. 'ethernet-ports' is for DSA binding. The former is allowed due to existing users. Don't add more.
+ #address-cells = <1>;
+ #size-cells = <0>;
- port@3 {
- reg = <3>;
- label = "lan3";
+ port@0 {
+ reg = <0>;
+ label = "lan1";
+ };
+
+ port@1 {
+ reg = <1>;
+ label = "lan2";
+ };
+
+ port@2 {
+ reg = <2>;
+ label = "lan3";
+ };
+
+ port@3 {
+ reg = <3>;
+ label = "lan4";
+ };
+
+ port@4 {
+ reg = <4>;
+ label = "wan";
+ };
+
+ port@6 {
+ reg = <6>;
+ label = "cpu";
+ ethernet = <&gmac0>;
+ phy-mode = "rgmii";
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ pause;
+ };
+ };
+ };
};
+ };
+ };
+ };
- port@4 {
- reg = <4>;
- label = "wan";
+ # Example 2: MT7530 in MT7623AI SoCLooks almost the same as example 1. Examples are not an enumeration of every possible DT. Limit them to cases which are significantly different.
+ - |
+ #include <dt-bindings/reset/mt2701-resets.h>
+
+ platform {
+ ethernet {
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch@0 {
+ compatible = "mediatek,mt7530";
+ reg = <0>;
+
+ mediatek,mcm;
+ resets = <ðsys MT2701_ETHSYS_MCM_RST>;
+ reset-names = "mcm";
+
+ core-supply = <&mt6323_vpa_reg>;
+ io-supply = <&mt6323_vemc3v3_reg>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ label = "lan1";
+ };
+
+ port@1 {
+ reg = <1>;
+ label = "lan2";
+ };
+
+ port@2 {
+ reg = <2>;
+ label = "lan3";
+ };
+
+ port@3 {
+ reg = <3>;
+ label = "lan4";
+ };
+
+ port@4 {
+ reg = <4>;
+ label = "wan";
+ };
+
+ port@6 {
+ reg = <6>;
+ label = "cpu";
+ ethernet = <&gmac0>;
+ phy-mode = "trgmii";
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ pause;
+ };
+ };
+ };
};
+ };
+ };
+ };
+
+ # Example 3: Standalone MT7531
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ platform {
+ ethernet {
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch@0 {
+ compatible = "mediatek,mt7531";
+ reg = <0>;
+
+ reset-gpios = <&pio 54 0>;
+
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ interrupt-parent = <&pio>;
+ interrupts = <53 IRQ_TYPE_LEVEL_HIGH>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ label = "lan1";
+ };
+
+ port@1 {
+ reg = <1>;
+ label = "lan2";
+ };
+
+ port@2 {
+ reg = <2>;
+ label = "lan3";
+ };
+
+ port@3 {
+ reg = <3>;
+ label = "lan4";
+ };
- port@6 {
- reg = <6>;
- label = "cpu";
- ethernet = <&gmac0>;
- phy-mode = "trgmii";
- fixed-link {
- speed = <1000>;
- full-duplex;
+ port@4 {
+ reg = <4>;
+ label = "wan";
+ };
+
+ port@6 {
+ reg = <6>;
+ label = "cpu";
+ ethernet = <&gmac0>;
+ phy-mode = "2500base-x";
+
+ fixed-link {
+ speed = <2500>;
+ full-duplex;
+ pause;
+ };
+ };
};
};
};
};
};
+ # Example 4: MT7530 in MT7621AT, MT7621DAT and MT7621ST SoCs
- |
- //Example 2: MT7621: Port 4 is WAN port: 2nd GMAC -> Port 5 -> PHY port 4.
-
- ethernet {
- #address-cells = <1>;
- #size-cells = <0>;
- gmac0: mac@0 {
- compatible = "mediatek,eth-mac";
- reg = <0>;
- phy-mode = "rgmii";
-
- fixed-link {
- speed = <1000>;
- full-duplex;
- pause;
+ #include <dt-bindings/interrupt-controller/mips-gic.h>
+ #include <dt-bindings/reset/mt7621-reset.h>
+
+ platform {
+ ethernet {
+ mdio {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ switch@0 {
+ compatible = "mediatek,mt7621";
+ reg = <0>;
+
+ mediatek,mcm;
+ resets = <&sysc MT7621_RST_MCM>;
+ reset-names = "mcm";
+
+ interrupt-controller;
+ #interrupt-cells = <1>;
+ interrupt-parent = <&gic>;
+ interrupts = <GIC_SHARED 23 IRQ_TYPE_LEVEL_HIGH>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ label = "lan1";
+ };
+
+ port@1 {
+ reg = <1>;
+ label = "lan2";
+ };
+
+ port@2 {
+ reg = <2>;
+ label = "lan3";
+ };
+
+ port@3 {
+ reg = <3>;
+ label = "lan4";
+ };
+
+ port@4 {
+ reg = <4>;
+ label = "wan";
+ };
+
+ port@6 {
+ reg = <6>;
+ label = "cpu";
+ ethernet = <&gmac0>;
+ phy-mode = "trgmii";
+
+ fixed-link {
+ speed = <1000>;
+ full-duplex;
+ pause;
+ };
+ };
+ };
+ };
};
};
+ };
- gmac1: mac@1 {
- compatible = "mediatek,eth-mac";
- reg = <1>;
- phy-mode = "rgmii-txid";
- phy-handle = <&phy4>;
+ # Example 5: MT7621: mux MT7530's phy4 to SoC's gmac1
+ - |
+ #include <dt-bindings/interrupt-controller/mips-gic.h>
+ #include <dt-bindings/reset/mt7621-reset.h>
+
+ platform {
+ pinctrl {
+ example5_rgmii2_pins: rgmii2-pins {
+ pinmux {
+ groups = "rgmii2";
+ function = "rgmii2";
+ };
+ };No need to put this in the example. We don't put provide nodes in the examples of the consumers. It's also incomplete and can't be validated.
};
- mdio: mdio-bus {
+ ethernet {
#address-cells = <1>;
#size-cells = <0>;