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Date: Wed, 17 Aug 2022 01:15:16 +0300
From: Arınç ÜNAL <arinc.unal@...nc9.com>
To: Rob Herring <robh@...nel.org>
Cc: Andrew Lunn <andrew@...n.ch>,
Vivien Didelot <vivien.didelot@...il.com>,
Florian Fainelli <f.fainelli@...il.com>,
Vladimir Oltean <olteanv@...il.com>,
"David S . Miller" <davem@...emloft.net>,
Eric Dumazet <edumazet@...gle.com>,
Jakub Kicinski <kuba@...nel.org>,
Paolo Abeni <pabeni@...hat.com>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Matthias Brugger <matthias.bgg@...il.com>,
Sean Wang <sean.wang@...iatek.com>,
Landen Chao <Landen.Chao@...iatek.com>,
DENG Qingfang <dqfext@...il.com>,
Frank Wunderlich <frank-w@...lic-files.de>,
Luiz Angelo Daros de Luca <luizluca@...il.com>,
Sander Vanheule <sander@...nheule.net>,
René van Dorst <opensource@...rst.com>,
Daniel Golle <daniel@...rotopia.org>, erkin.bozoglu@...ont.com,
Sergio Paracuellos <sergio.paracuellos@...il.com>,
netdev@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 3/7] dt-bindings: net: dsa: mediatek,mt7530: update
examples
On 17.08.2022 00:02, Rob Herring wrote:
> 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?
For wrong reasons as it seems. Will revert that one.
>
>>
>> Signed-off-by: Arınç ÜNAL <arinc.unal@...nc9.com>
>> ---
>> .../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.
Will remove.
>
>> + 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.
Will fix.
>
>> + #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 SoC
>
> Looks almost the same as example 1. Examples are not an enumeration of
> every possible DT. Limit them to cases which are significantly
> different.
It seemed to me it would be useful to reference the reset line for the
MT7623AI SoC. Using mediatek,mcm and especially MT2701_ETHSYS_MCM_RST in
dt-bindings/reset/mt2701-resets.h.
Should I remove anyway?
>
>> + - |
>> + #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.
Will remove.
>
>> };
>>
>> - mdio: mdio-bus {
>> + ethernet {
>> #address-cells = <1>;
>> #size-cells = <0>;
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