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[93.34.89.13]) by smtp.googlemail.com with ESMTPSA id j33-20020a05600c1c2100b0040772934b12sm18205846wms.7.2023.11.20.05.51.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 20 Nov 2023 05:51:10 -0800 (PST) From: Christian Marangi To: "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Andy Gross , Bjorn Andersson , Konrad Dybcio , Andrew Lunn , Heiner Kallweit , Russell King , Florian Fainelli , Broadcom internal kernel review list , Daniel Golle , Qingfang Deng , SkyLake Huang , Matthias Brugger , AngeloGioacchino Del Regno , David Epping , Vladimir Oltean , Christian Marangi , "Russell King (Oracle)" , Harini Katakam , Simon Horman , Robert Marko , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org Subject: [net-next RFC PATCH 00/14] net: phy: Support DT PHY package Date: Mon, 20 Nov 2023 14:50:27 +0100 Message-Id: <20231120135041.15259-1-ansuelsmth@gmail.com> X-Mailer: git-send-email 2.40.1 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Patchwork-Delegate: kuba@kernel.org X-Patchwork-State: RFC Idea of this big series is to introduce the concept of PHY package in DT and generalize the support of it by PHY driver. The concept of PHY package is nothing new and is already a thing in the kernel with the API phy_package_join/leave/read/write. The main idea of those API is to permit the PHY to have a shared global data and to run probe/config only once for the PHY package. There are various example of this already in the kernel with the mscc, bcm54140 mediatek ge and micrle driver and they all follow the same pattern. What is currently lacking is describing this in DT and better reference the PHY in charge of global configuration of the PHY package. For the already present PHY, the implementation is simple enough with only one PHY having the required regs to apply global configuration. This can be ok for simple PHY package but some Qcom PHY package on ""modern"" SoC have more complex implementation. One example is the PHY for qca807x where some global regs are present in the so-called "combo" port and everything about psgmii calibration is placed in a 5th port in the PHY package. Given these additional thing, the original phy_package API are extended with support for multiple global PHY for configuration. Each PHY driver will have an enum of the ID for the global PHY to reference and is required to pass to the read/write function. On top of this, it's added correct DT support for describing PHY package. One example is this: ethernet-phy-package { compatible = "ethernet-phy-package"; #address-cells = <1>; #size-cells = <0>; global-phys = <&phy4>; global-phy-names = "base"; ethernet-phy@1 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <1>; }; phy4: ethernet-phy@4 { compatible = "ethernet-phy-ieee802.3-c22"; reg = <4>; }; }; The mdio parse functions are changed to address for this additional special node, the function is changed to simply detect this node and search also in this. If this is detected phy core will join each PHY present in the node and use (if defined) the additional info in the PHY driver to probe/config once the PHY package. Some PHY package also supports a single phy-mode for every PHY in the PHY package. This is also supported and can be described in DT by defining the phy-mode in the PHY package node. I hope this implementation is clean enough as I expect more and more of these configuration to appear in the future. Christian Marangi (12): net: phy: extend PHY package API to support multiple global address dt-bindings: net: move PHY modes to common PHY mode types definition dt-bindings: net: document ethernet PHY package nodes net: phy: add initial support for PHY package in DT net: phy: add support for named global PHY in DT PHY package net: phy: add support for shared priv data size for PHY package in DT net: phy: add support for driver specific PHY package probe/config net: phy: add support for PHY package interface mode net: phy: move mmd_phy_indirect to generic header net: phy: add support for PHY package MMD read/write dt-bindings: net: Document Qcom QCA807x PHY package net: phy: qca807x: Add support for configurable LED Robert Marko (2): dt-bindings: net: add QCA807x PHY defines net: phy: add Qualcom QCA807x driver .../bindings/net/ethernet-controller.yaml | 47 +- .../bindings/net/ethernet-phy-mode-types.yaml | 132 ++ .../bindings/net/ethernet-phy-package.yaml | 86 ++ .../devicetree/bindings/net/qcom,qca807x.yaml | 143 ++ drivers/net/mdio/of_mdio.c | 60 +- drivers/net/phy/Kconfig | 7 + drivers/net/phy/Makefile | 1 + drivers/net/phy/bcm54140.c | 23 +- drivers/net/phy/mdio_bus.c | 33 +- drivers/net/phy/mediatek-ge-soc.c | 11 +- drivers/net/phy/micrel.c | 13 +- drivers/net/phy/mscc/mscc.h | 7 + drivers/net/phy/mscc/mscc_main.c | 16 +- drivers/net/phy/phy-core.c | 14 - drivers/net/phy/phy_device.c | 218 ++- drivers/net/phy/qca807x.c | 1232 +++++++++++++++++ include/dt-bindings/net/qcom-qca807x.h | 45 + include/linux/phy.h | 178 ++- 18 files changed, 2119 insertions(+), 147 deletions(-) create mode 100644 Documentation/devicetree/bindings/net/ethernet-phy-mode-types.yaml create mode 100644 Documentation/devicetree/bindings/net/ethernet-phy-package.yaml create mode 100644 Documentation/devicetree/bindings/net/qcom,qca807x.yaml create mode 100644 drivers/net/phy/qca807x.c create mode 100644 include/dt-bindings/net/qcom-qca807x.h