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Message-ID: <4e896382-c666-55c6-f50b-5c442e428a2b@linaro.org>
Date: Thu, 29 Sep 2022 09:22:45 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Bhupesh Sharma <bhupesh.sharma@...aro.org>,
devicetree@...r.kernel.org
Cc: linux-arm-msm@...r.kernel.org, agross@...nel.org,
bhupesh.linux@...il.com, linux-kernel@...r.kernel.org,
robh+dt@...nel.org, netdev@...r.kernel.org,
Bjorn Andersson <andersson@...nel.org>,
Rob Herring <robh@...nel.org>, Vinod Koul <vkoul@...nel.org>,
David Miller <davem@...emloft.net>
Subject: Re: [PATCH v2 3/4] dt-bindings: net: qcom,ethqos: Convert bindings to
yaml
On 29/09/2022 08:04, Bhupesh Sharma wrote:
> Convert Qualcomm ETHQOS Ethernet devicetree binding to YAML.
>
> While at it, also add Qualcomm Ethernet ETHQOS compatible checks
> in snps,dwmac YAML binding document.
There are no checks added to snps,dwmac.
>
> Cc: Bjorn Andersson <andersson@...nel.org>
> Cc: Rob Herring <robh@...nel.org>
> Cc: Vinod Koul <vkoul@...nel.org>
> Cc: David Miller <davem@...emloft.net>
> Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
> ---
> .../devicetree/bindings/net/qcom,ethqos.txt | 66 --------
> .../devicetree/bindings/net/qcom,ethqos.yaml | 145 ++++++++++++++++++
> 2 files changed, 145 insertions(+), 66 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.txt
> create mode 100644 Documentation/devicetree/bindings/net/qcom,ethqos.yaml
>
> diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.txt b/Documentation/devicetree/bindings/net/qcom,ethqos.txt
> deleted file mode 100644
> index 1f5746849a71..000000000000
> --- a/Documentation/devicetree/bindings/net/qcom,ethqos.txt
> +++ /dev/null
> @@ -1,66 +0,0 @@
> -Qualcomm Ethernet ETHQOS device
> -
> -This documents dwmmac based ethernet device which supports Gigabit
> -ethernet for version v2.3.0 onwards.
> -
> -This device has following properties:
> -
> -Required properties:
> -
> -- compatible: Should be one of:
> - "qcom,qcs404-ethqos"
> - "qcom,sm8150-ethqos"
> -
> -- reg: Address and length of the register set for the device
> -
> -- reg-names: Should contain register names "stmmaceth", "rgmii"
> -
> -- clocks: Should contain phandle to clocks
> -
> -- clock-names: Should contain clock names "stmmaceth", "pclk",
> - "ptp_ref", "rgmii"
> -
> -- interrupts: Should contain phandle to interrupts
> -
> -- interrupt-names: Should contain interrupt names "macirq", "eth_lpi"
> -
> -Rest of the properties are defined in stmmac.txt file in same directory
> -
> -
> -Example:
> -
> -ethernet: ethernet@...0000 {
> - compatible = "qcom,qcs404-ethqos";
> - reg = <0x07a80000 0x10000>,
> - <0x07a96000 0x100>;
> - reg-names = "stmmaceth", "rgmii";
> - clock-names = "stmmaceth", "pclk", "ptp_ref", "rgmii";
> - clocks = <&gcc GCC_ETH_AXI_CLK>,
> - <&gcc GCC_ETH_SLAVE_AHB_CLK>,
> - <&gcc GCC_ETH_PTP_CLK>,
> - <&gcc GCC_ETH_RGMII_CLK>;
> - interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>,
> - <GIC_SPI 55 IRQ_TYPE_LEVEL_HIGH>;
> - interrupt-names = "macirq", "eth_lpi";
> - snps,reset-gpio = <&tlmm 60 GPIO_ACTIVE_LOW>;
> - snps,reset-active-low;
> -
> - snps,txpbl = <8>;
> - snps,rxpbl = <2>;
> - snps,aal;
> - snps,tso;
> -
> - phy-handle = <&phy1>;
> - phy-mode = "rgmii";
> -
> - mdio {
> - #address-cells = <0x1>;
> - #size-cells = <0x0>;
> - compatible = "snps,dwmac-mdio";
> - phy1: phy@4 {
> - device_type = "ethernet-phy";
> - reg = <0x4>;
> - };
> - };
> -
> -};
> diff --git a/Documentation/devicetree/bindings/net/qcom,ethqos.yaml b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
> new file mode 100644
> index 000000000000..d3d8f6799d18
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/net/qcom,ethqos.yaml
> @@ -0,0 +1,145 @@
> +# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/net/qcom,ethqos.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Ethernet ETHQOS device
> +
> +maintainers:
> + - Bhupesh Sharma <bhupesh.sharma@...aro.org>
> +
> +description:
> + This binding describes the dwmmac based Qualcomm ethernet devices which
> + support Gigabit ethernet (version v2.3.0 onwards).
> +
> + So, this file documents platform glue layer for dwmmac stmmac based Qualcomm
> + ethernet devices.
> +
> +allOf:
> + - $ref: snps,dwmac.yaml#
> +
> +properties:
> + compatible:
> + enum:
> + - qcom,qcs404-ethqos
> + - qcom,sm8150-ethqos
> +
> + reg:
> + maxItems: 2
> +
> + reg-names:
> + items:
> + - const: stmmaceth
> + - const: rgmii
> +
> + interrupts:
> + items:
> + - description: Combined signal for various interrupt events
> + - description: The interrupt that occurs when Rx exits the LPI state
> +
> + interrupt-names:
> + items:
> + - const: macirq
> + - const: eth_lpi
> +
> + clocks:
> + maxItems: 4
> +
> + clock-names:
> + items:
> + - const: stmmaceth
> + - const: pclk
> + - const: ptp_ref
> + - const: rgmii
> +
> + iommus:
> + maxItems: 1
> +
> + mdio:
> + $ref: mdio.yaml#
> + unevaluatedProperties: false
> +
> + properties:
> + compatible:
> + const: snps,dwmac-mdio
> +
> + phy-handle:
> + maxItems: 1
> +
> + phy-mode:
> + maxItems: 1
> +
> + snps,reset-gpio:
> + maxItems: 1
Why is this one here? It's already in snps,dwmac.
Actually this applies to several other properties. You have
unevaluatedProperties:false, so you do not have to duplicate snps,dwmac.
You only need to constrain it, like we said about interrupts in your
previous patch.
> +
> + power-domains:
> + maxItems: 1
> +
> + resets:
> + maxItems: 1
> +
> + rx-fifo-depth:
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + tx-fifo-depth:
> + $ref: /schemas/types.yaml#/definitions/uint32
> +
> + snps,tso:
> + type: boolean
> + description: Enables the TSO feature (otherwise managed by MAC HW capability register).
You add here several new properties. Mention in commit msg changes from
pure conversion with answer to "why".
> +
> +required:
> + - compatible
> + - clocks
> + - clock-names
> +
> +unevaluatedProperties: false
> +
Best regards,
Krzysztof
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