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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , "Russell King (Oracle)" , Yao Zi , Yanteng Si , Choong Yong Liang , Inochi Amaoto , Lad Prabhakar , Shangjuan Wei , Chen-Yu Tsai , Boon Khai Ng , Maxime Chevallier , Quentin Schulz , Giuseppe Cavallaro , Jose Abreu Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, spacemit@lists.linux.dev, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Yixun Lan , Longbin Li Subject: [PATCH net-next v5 0/3] riscv: spacemit: Add ethernet support for K3 Date: Fri, 27 Feb 2026 15:57:14 +0800 Message-ID: <20260227075718.2243818-1-inochiama@gmail.com> X-Mailer: git-send-email 2.53.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add initial support for ethernet controller of the Spacemit K3 SoC. This ethernet controller is almost a standard Synopsys DesignWare MAC (version 5.40a). This controller require a syscon device to configure some basic features, like interface type and internal delay. Change from v4: - https://lore.kernel.org/netdev/20260130022705.1059214-1-inochiama@gmail.com patch 1: 1 Apply Rob's tag. 2 Adjust clock description according to Russell's suggestion. patch 3: 1. Add set_phy_intf_sel() and get_interfaces() hook, suggested by Russell. Change from v3: - https://lore.kernel.org/netdev/20260128072931.875041-1-inochiama@gmail.com patch 1: 1. fix the uncorrect compatible string postion patch 3: 1. add "CTRL_" prefix to all ctrl register definition 2. only use delay config 0 to calculate delay code. 3. fix typo in the comment Change from v2: - https://lore.kernel.org/netdev/20260121071315.940130-1-inochiama@gmail.com patch 1: 1. remove not needed compatible for select 2. drop empty line in "spacemit,apmu" properties 3. add spacemit,apmu properties to required. patch 3: 1. remove misused phy_fix_phy_mode_for_mac_delays. 2. use local tx clock instead of the clk_tx_i in the dwmac. Change from v1: - https://lore.kernel.org/netdev/20260120043609.910302-1-inochiama@gmail.com patch 1: 1. remove phy clock patch 3: 1. improve comment and include something special about Spacmit K3 dwmac 2. reorder the included file 3. fix wrong delay macro used in spacemit_dwmac_set_delay. 4. add check for maximum supported delay. 5. use DIV_ROUND_CLOSEST to calculate best delay configuration. 6. use assign for the ctrl register initial value. 7. fix input when calling of_property_read_u32(). Inochi Amaoto (3): dt-bindings: net: Add support for Spacemit K3 dwmac net: stmmac: platform: Add snps,dwmac-5.40a IP compatible string net: stmmac: Add glue layer for Spacemit K3 SoC .../devicetree/bindings/net/snps,dwmac.yaml | 2 + .../bindings/net/spacemit,k3-dwmac.yaml | 103 ++++++++ drivers/net/ethernet/stmicro/stmmac/Kconfig | 12 + drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../ethernet/stmicro/stmmac/dwmac-spacemit.c | 226 ++++++++++++++++++ .../ethernet/stmicro/stmmac/stmmac_platform.c | 1 + 6 files changed, 345 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/spacemit,k3-dwmac.yaml create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-spacemit.c -- 2.53.0