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Date: Thu, 3 Nov 2022 11:08:49 -0400
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Lorenzo Bianconi <lorenzo@...nel.org>, netdev@...r.kernel.org
Cc: nbd@....name, john@...ozen.org, sean.wang@...iatek.com,
Mark-MC.Lee@...iatek.com, davem@...emloft.net, edumazet@...gle.com,
kuba@...nel.org, pabeni@...hat.com, matthias.bgg@...il.com,
linux-mediatek@...ts.infradead.org, lorenzo.bianconi@...hat.com,
Bo.Jiao@...iatek.com, sujuan.chen@...iatek.com,
ryder.Lee@...iatek.com, evelyn.tsai@...iatek.com,
devicetree@...r.kernel.org, robh+dt@...nel.org,
daniel@...rotopia.org, krzysztof.kozlowski+dt@...aro.org
Subject: Re: [PATCH v3 net-next 2/8] dt-bindings: net: mediatek: add WED RX
binding for MT7986 eth driver
On 03/11/2022 05:28, Lorenzo Bianconi wrote:
> Document the binding for the RX Wireless Ethernet Dispatch core on the
> MT7986 ethernet driver used to offload traffic received by WLAN NIC and
> forwarded to LAN/WAN one.
>
> Signed-off-by: Lorenzo Bianconi <lorenzo@...nel.org>
> ---
> .../arm/mediatek/mediatek,mt7622-wed.yaml | 62 ++++++++++++++++++-
> .../arm/mediatek/mediatek,mt7986-wo-boot.yaml | 47 ++++++++++++++
> .../arm/mediatek/mediatek,mt7986-wo-ccif.yaml | 50 +++++++++++++++
> .../arm/mediatek/mediatek,mt7986-wo-dlm.yaml | 50 +++++++++++++++
> 4 files changed, 206 insertions(+), 3 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-boot.yaml
> create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-ccif.yaml
> create mode 100644 Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-dlm.yaml
>
> diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml
> index 84fb0a146b6e..9e34c5d15cec 100644
> --- a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml
> +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7622-wed.yaml
> @@ -1,8 +1,8 @@
> # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> %YAML 1.2
> ---
> -$id: "http://devicetree.org/schemas/arm/mediatek/mediatek,mt7622-wed.yaml#"
> -$schema: "http://devicetree.org/meta-schemas/core.yaml#"
> +$id: http://devicetree.org/schemas/arm/mediatek/mediatek,mt7622-wed.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
Split the cleanups from essential/functional changes.
>
> title: MediaTek Wireless Ethernet Dispatch Controller for MT7622
>
> @@ -29,6 +29,50 @@ properties:
> interrupts:
> maxItems: 1
>
> + memory-region:
> + items:
> + - description:
> + Phandle for the node used to run firmware EMI region
Merge above two lines. Drop "phandle for the node used to run"
> + - description:
> + Phandle for the node used to run firmware ILM region
> + - description:
> + Phandle for the node used to run firmware CPU DATA region
> +
> + memory-region-names:
> + items:
> + - const: wo-emi
> + - const: wo-ilm
> + - const: wo-data
> +
> + mediatek,wo-ccif:
> + $ref: /schemas/types.yaml#/definitions/phandle
> + description:
> + Phandle to the mediatek wed-wo controller.
Drop "Phandle to". Same in other cases.
> +
> + mediatek,wo-boot:
> + $ref: /schemas/types.yaml#/definitions/phandle
> + description:
> + Phandle to the mediatek wed-wo boot interface.
> +
> + mediatek,wo-dlm:
> + $ref: /schemas/types.yaml#/definitions/phandle
> + description:
> + Phandle to the mediatek wed-wo rx hw ring.
rx->RX?
hw->HW?
> +
> +allOf:
> + - if:
> + properties:
> + compatible:
> + contains:
> + const: mediatek,mt7622-wed
> + then:
> + properties:
> + memory-region-names: false
> + memory-region: false
> + mediatek,wo-boot: false
> + mediatek,wo-ccif: false
> + mediatek,wo-dlm: false
> +
> required:
> - compatible
> - reg
> @@ -44,8 +88,20 @@ examples:
> #address-cells = <2>;
> #size-cells = <2>;
> wed0: wed@...0a000 {
> - compatible = "mediatek,mt7622-wed","syscon";
> + compatible = "mediatek,mt7622-wed", "syscon";
> reg = <0 0x1020a000 0 0x1000>;
> interrupts = <GIC_SPI 214 IRQ_TYPE_LEVEL_LOW>;
> };
> +
> + wed1: wed@...10000 {
That's a separate example. - |
Drop wed1 label.
> + compatible = "mediatek,mt7986-wed", "syscon";
And where is the compatible added?
> + reg = <0 0x15010000 0 0x1000>;
> + interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>;
> +
> + memory-region = <&wo_emi>, <&wo_data>, <&wo_ilm>;
> + memory-region-names = "wo-emi", "wo-ilm", "wo-data";
> + mediatek,wo-ccif = <&wo_ccif0>;
> + mediatek,wo-boot = <&wo_boot>;
> + mediatek,wo-dlm = <&wo_dlm0>;
> + };
> };
> diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-boot.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-boot.yaml
> new file mode 100644
> index 000000000000..6c3c514c48ef
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-boot.yaml
arm is only for top-level stuff. Choose appropriate subsystem, soc as
last resort.
> @@ -0,0 +1,47 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/mediatek/mediatek,mt7986-wo-boot.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title:
> + MediaTek Wireless Ethernet Dispatch WO boot controller interface for MT7986
> +
> +maintainers:
> + - Lorenzo Bianconi <lorenzo@...nel.org>
> + - Felix Fietkau <nbd@....name>
> +
> +description:
> + The mediatek wo-boot provides a configuration interface for WED WO
> + boot controller on MT7986 soc.
And what is "WED WO boot controller?
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - mediatek,mt7986-wo-boot
> + - const: syscon
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + wo_boot: syscon@...94000 {
> + compatible = "mediatek,mt7986-wo-boot", "syscon";
> + reg = <0 0x15194000 0 0x1000>;
> + };
> + };
> diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-ccif.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-ccif.yaml
> new file mode 100644
> index 000000000000..6357a206587a
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-ccif.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/mediatek/mediatek,mt7986-wo-ccif.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek Wireless Ethernet Dispatch WO controller interface for MT7986
> +
> +maintainers:
> + - Lorenzo Bianconi <lorenzo@...nel.org>
> + - Felix Fietkau <nbd@....name>
> +
> +description:
> + The mediatek wo-ccif provides a configuration interface for WED WO
> + controller on MT7986 soc.
All previous comments apply.
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - mediatek,mt7986-wo-ccif
> + - const: syscon
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + #include <dt-bindings/interrupt-controller/arm-gic.h>
> + #include <dt-bindings/interrupt-controller/irq.h>
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + wo_ccif0: syscon@...a5000 {
> + compatible = "mediatek,mt7986-wo-ccif", "syscon";
> + reg = <0 0x151a5000 0 0x1000>;
> + interrupts = <GIC_SPI 205 IRQ_TYPE_LEVEL_HIGH>;
> + };
> + };
> diff --git a/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-dlm.yaml b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-dlm.yaml
> new file mode 100644
> index 000000000000..a499956d9e07
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/arm/mediatek/mediatek,mt7986-wo-dlm.yaml
> @@ -0,0 +1,50 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/arm/mediatek/mediatek,mt7986-wo-dlm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MediaTek Wireless Ethernet Dispatch WO hw rx ring interface for MT7986
> +
> +maintainers:
> + - Lorenzo Bianconi <lorenzo@...nel.org>
> + - Felix Fietkau <nbd@....name>
> +
> +description:
> + The mediatek wo-dlm provides a configuration interface for WED WO
> + rx ring on MT7986 soc.
> +
> +properties:
> + compatible:
> + const: mediatek,mt7986-wo-dlm
> +
> + reg:
> + maxItems: 1
> +
> + resets:
> + maxItems: 1
> +
> + reset-names:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - reg
> + - resets
> + - reset-names
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + soc {
> + #address-cells = <2>;
> + #size-cells = <2>;
> +
> + wo_dlm0: wo-dlm@...e8000 {
Node names should be generic.
https://devicetree-specification.readthedocs.io/en/latest/chapter2-devicetree-basics.html#generic-names-recommendation
Best regards,
Krzysztof
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