From patchwork Wed Apr 16 10:40:12 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Prabhakar X-Patchwork-Id: 14053699 X-Patchwork-Delegate: geert@linux-m68k.org Received: from mail-wr1-f49.google.com (mail-wr1-f49.google.com [209.85.221.49]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 72E722356D1; Wed, 16 Apr 2025 10:40:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.221.49 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744800028; cv=none; b=f5DBxNS5dDIWgwKVUYPrPdfyvy4tZRPllVigx9dNhWIDqLGSFPzqx2TwoqJGEQVBtXdLfTfimSfThUWQVHO8Sl/QQDXNQ6deGE/zeEAyNvC1ICznugUeqjQete5RlKaTimtv+6vVfifN3IYXtSmSDcvwgt8450QhhxEK5rwXyMY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744800028; c=relaxed/simple; bh=JV6/Zd7jmLkMX3zv5Il0vw94EGousU0d+tw5mlhV1i0=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=rmnATk8w7obTuSiB4dKzSIUpDBVl3Gl01sd7Uxwl3FIhEnZ7mJz+dvefXfp0z+tjMfFQ/D1TRzXf5yUCDskAYBTxsTo/H2o8yxvt7CD17yIxuSf0IoSdmyYznCEgD60+lzr5zyqkEPqEHQSJRUBN/DUUpOTT3IQxFajO6ibtdVQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Yo1Q/EL9; arc=none smtp.client-ip=209.85.221.49 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="Yo1Q/EL9" Received: by mail-wr1-f49.google.com with SMTP id ffacd0b85a97d-39c1ef4acf2so4193626f8f.0; Wed, 16 Apr 2025 03:40:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1744800025; x=1745404825; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Dxtx+wYgnayT5+SYG5cHUYe65nSDdAbTREq4fQgE5Vg=; b=Yo1Q/EL9hasJbbmtQL588/TTznKcCtaowlZ6DvPP8nKqsxw5zIE4j7ugQjfnJ+ZwL3 uCUbkrae8rscKYbr4EPNZ7pwtiMAbvOlMRWB5Cv5BrGjGT1JgVi3THOzny8UYqw78071 mejtkBevv4v60FBoslVZQoylc11r/KU7HY+2HgHxEGtUQxamCrU07+4ifRYUXT1Cf/1w jlNHRZg580QOCE4i/VGw7AStfy/uxlK9n12X0kDRnRvOHnyjh3y7+O6O0lzaD5bDQUXh 4jzs+fzaKDKYvTDP/Wl/CI6uqBpovCoYdURuzdbUkXVpyXR8eCDOcEXw11eQKlMYAegW DVKA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744800025; x=1745404825; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Dxtx+wYgnayT5+SYG5cHUYe65nSDdAbTREq4fQgE5Vg=; b=CKFK8fQYKCM3yMugWltPS82Z5EHhPcEUdqoLamb9zyrfm2zHHSft89Y3AZoe36DgSm HTKN7cCKIo+CD1gBG+Iej88CCUnbDjB5E313UYPAIJpW/PazSba7oTgb5GVaxcK4u2YF +8Lv8HvovZZ9G/471MM17+/0r8ruR8B/XBY31f5DhXUIgOCxdVsaplo3UqJbEgvQoE2J oqv+CN8AwjgaN5E2MLBzaqktJa7Ve5d7dCqRtO6jmvsKKkHfc3zhv9IOV0j4witrNOJM Uq0ba2XtpHDi5hetfECCY1cAe3Y5ftgDka7H/f2ge4a6aig8EhPnWEPN3qL/KIuc4gGi E4vw== X-Forwarded-Encrypted: i=1; AJvYcCULU7QO8q+9pg3T23YNzMWo0SvizEarHsAT9NdvJIIqkWpb3fQ6ufKbZZ/oasmmrWK9fWeKh8gqHqp0QKgcviVHa4o=@vger.kernel.org, AJvYcCUcL4mryN/mcf0whS3WP/npXHNn+PTa08VpCjRQ+85p553T73eOWli0chD6FH2j8DXG7wwjkB5XdIU0w24b@vger.kernel.org, AJvYcCXSvraZCchMtCBHF978vl9dr8vhZLZFRzYaggFrSMCG0YYOrfn1CuApDdwfzotDFsIEw7VD/H57PfO2@vger.kernel.org X-Gm-Message-State: AOJu0YxQo9i9eW/+DcuMeuXfs6ZHgjsElyl0at/EPWBHhmTao3lwmal6 MuQjmW2n+4uQF5cGbJwjxBtx8wKo9BfFjVQNKvySg40QhO1hGHjz X-Gm-Gg: ASbGncsKfBcP0C2W5BrRTzSNywAcZe+AVd73o5dYzofnWRbEoa96W5hWHAu4JnwP1PP Z8tEEXO+L8AtITQXyAxJkffhE8hsU8nsrgF2WugYZPWcV4w/MDzbvPa5nFo9vzLBfOmStPrynLX 9E9+z+gTQStAGBcwB2gy5Zq6ss66vJe64xVdxPZPXMleSD/xcMZhbgrZ7XUcedqF1ZLGNMO+SQg PnI2fu2mkveqgx650LzDrVBHvEQCKu9IhkW/LgA/1a9duhqyVwUxNNRltyX11aO4CItLURLK0kV Ikz8lNO2d0tJCD/59pK5ys4QCzhPEMPwHoVK8YOLgSxjwXOE919+74GZjxHFMaWofP0e4KVYy75 G X-Google-Smtp-Source: AGHT+IHjVa5WDXcZCkMbAi3WRxmtcXMiaUdkFnUUCMfrR94dmm4AfGyFddim6DuqjvutFE0yMpkmTA== X-Received: by 2002:a5d:5f49:0:b0:390:eebc:6f32 with SMTP id ffacd0b85a97d-39ee5bade02mr1377171f8f.48.1744800024211; Wed, 16 Apr 2025 03:40:24 -0700 (PDT) Received: from iku.Home ([2a06:5906:61b:2d00:b4a2:e121:10d6:ac54]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39eae964089sm16824975f8f.15.2025.04.16.03.40.22 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Apr 2025 03:40:23 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Philipp Zabel , Geert Uytterhoeven , Magnus Damm , "Russell King (Oracle)" , Giuseppe Cavallaro , Jose Abreu Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH net-next v7 1/4] dt-bindings: net: dwmac: Increase 'maxItems' for 'interrupts' and 'interrupt-names' Date: Wed, 16 Apr 2025 11:40:12 +0100 Message-ID: <20250416104015.47788-2-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Increase the `maxItems` value for the `interrupts` and `interrupt-names` properties to 11 to support additional per-channel Tx/Rx completion interrupts on the Renesas RZ/V2H(P) SoC, which features the `snps,dwmac-5.20` IP. Refactor the `interrupt-names` property by replacing repeated `enum` entries with a `oneOf` list. Add support for per-channel receive and transmit completion interrupts using regex patterns. Signed-off-by: Lad Prabhakar Reviewed-by: Rob Herring (Arm) --- .../devicetree/bindings/net/snps,dwmac.yaml | 24 ++++++++++++------- 1 file changed, 15 insertions(+), 9 deletions(-) diff --git a/Documentation/devicetree/bindings/net/snps,dwmac.yaml b/Documentation/devicetree/bindings/net/snps,dwmac.yaml index 78b3030dc56d..4d4fcaeca8a8 100644 --- a/Documentation/devicetree/bindings/net/snps,dwmac.yaml +++ b/Documentation/devicetree/bindings/net/snps,dwmac.yaml @@ -114,19 +114,25 @@ properties: interrupts: minItems: 1 - items: - - description: Combined signal for various interrupt events - - description: The interrupt to manage the remote wake-up packet detection - - description: The interrupt that occurs when Rx exits the LPI state - - description: The interrupt that occurs when HW safety error triggered + maxItems: 11 interrupt-names: minItems: 1 + maxItems: 11 items: - - const: macirq - - enum: [eth_wake_irq, eth_lpi, sfty] - - enum: [eth_wake_irq, eth_lpi, sfty] - - enum: [eth_wake_irq, eth_lpi, sfty] + oneOf: + - description: Combined signal for various interrupt events + const: macirq + - description: The interrupt to manage the remote wake-up packet detection + const: eth_wake_irq + - description: The interrupt that occurs when Rx exits the LPI state + const: eth_lpi + - description: The interrupt that occurs when HW safety error triggered + const: sfty + - description: Per channel receive completion interrupt + pattern: '^rx-queue-[0-3]$' + - description: Per channel transmit completion interrupt + pattern: '^tx-queue-[0-3]$' clocks: minItems: 1 From patchwork Wed Apr 16 10:40:13 2025 Content-Type: text/plain; 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Wed, 16 Apr 2025 03:40:25 -0700 (PDT) Received: from iku.Home ([2a06:5906:61b:2d00:b4a2:e121:10d6:ac54]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39eae964089sm16824975f8f.15.2025.04.16.03.40.24 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Apr 2025 03:40:24 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Philipp Zabel , Geert Uytterhoeven , Magnus Damm , "Russell King (Oracle)" , Giuseppe Cavallaro , Jose Abreu Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH net-next v7 2/4] dt-bindings: net: Document support for Renesas RZ/V2H(P) GBETH Date: Wed, 16 Apr 2025 11:40:13 +0100 Message-ID: <20250416104015.47788-3-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar GBETH IP on the Renesas RZ/V2H(P) SoC is integrated with Synopsys DesignWare MAC (version 5.20). Document the device tree bindings for the GBETH glue layer. Generic compatible string 'renesas,rzv2h-gbeth' is added since this module is identical on both the RZ/V2H(P) and RZ/G3E SoCs. The Rx/Tx clocks supplied for GBETH on the RZ/V2H(P) SoC is depicted below: Rx / Tx -------+------------- on / off ------- | | Rx-180 / Tx-180 +---- not ---- on / off ------- Signed-off-by: Lad Prabhakar Reviewed-by: Rob Herring (Arm) --- .../bindings/net/renesas,r9a09g057-gbeth.yaml | 201 ++++++++++++++++++ .../devicetree/bindings/net/snps,dwmac.yaml | 1 + 2 files changed, 202 insertions(+) create mode 100644 Documentation/devicetree/bindings/net/renesas,r9a09g057-gbeth.yaml diff --git a/Documentation/devicetree/bindings/net/renesas,r9a09g057-gbeth.yaml b/Documentation/devicetree/bindings/net/renesas,r9a09g057-gbeth.yaml new file mode 100644 index 000000000000..02a6793c26f5 --- /dev/null +++ b/Documentation/devicetree/bindings/net/renesas,r9a09g057-gbeth.yaml @@ -0,0 +1,201 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/net/renesas,r9a09g057-gbeth.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: GBETH glue layer for Renesas RZ/V2H(P) (and similar SoCs) + +maintainers: + - Lad Prabhakar + +select: + properties: + compatible: + contains: + enum: + - renesas,r9a09g057-gbeth + - renesas,rzv2h-gbeth + required: + - compatible + +properties: + compatible: + items: + - enum: + - renesas,r9a09g057-gbeth # RZ/V2H(P) + - const: renesas,rzv2h-gbeth + - const: snps,dwmac-5.20 + + reg: + maxItems: 1 + + clocks: + items: + - description: CSR clock + - description: AXI system clock + - description: PTP clock + - description: TX clock + - description: RX clock + - description: TX clock phase-shifted by 180 degrees + - description: RX clock phase-shifted by 180 degrees + + clock-names: + items: + - const: stmmaceth + - const: pclk + - const: ptp_ref + - const: tx + - const: rx + - const: tx-180 + - const: rx-180 + + interrupts: + minItems: 11 + + interrupt-names: + items: + - const: macirq + - const: eth_wake_irq + - const: eth_lpi + - const: rx-queue-0 + - const: rx-queue-1 + - const: rx-queue-2 + - const: rx-queue-3 + - const: tx-queue-0 + - const: tx-queue-1 + - const: tx-queue-2 + - const: tx-queue-3 + + resets: + items: + - description: AXI power-on system reset + +required: + - compatible + - reg + - clocks + - clock-names + - interrupts + - interrupt-names + - resets + +allOf: + - $ref: snps,dwmac.yaml# + +unevaluatedProperties: false + +examples: + - | + #include + #include + + ethernet@15c30000 { + compatible = "renesas,r9a09g057-gbeth", "renesas,rzv2h-gbeth", "snps,dwmac-5.20"; + reg = <0x15c30000 0x10000>; + clocks = <&cpg CPG_MOD 0xbd>, <&cpg CPG_MOD 0xbc>, + <&ptp_clock>, <&cpg CPG_MOD 0xb8>, + <&cpg CPG_MOD 0xb9>, <&cpg CPG_MOD 0xba>, + <&cpg CPG_MOD 0xbb>; + clock-names = "stmmaceth", "pclk", "ptp_ref", + "tx", "rx", "tx-180", "rx-180"; + resets = <&cpg 0xb0>; + interrupts = , + , + , + , + , + , + , + , + , + , + ; + interrupt-names = "macirq", "eth_wake_irq", "eth_lpi", + "rx-queue-0", "rx-queue-1", "rx-queue-2", + "rx-queue-3", "tx-queue-0", "tx-queue-1", + "tx-queue-2", "tx-queue-3"; + phy-mode = "rgmii-id"; + snps,multicast-filter-bins = <256>; + snps,perfect-filter-entries = <128>; + rx-fifo-depth = <8192>; + tx-fifo-depth = <8192>; + snps,fixed-burst; + snps,force_thresh_dma_mode; + snps,axi-config = <&stmmac_axi_setup>; + snps,mtl-rx-config = <&mtl_rx_setup>; + snps,mtl-tx-config = <&mtl_tx_setup>; + snps,txpbl = <32>; + snps,rxpbl = <32>; + phy-handle = <&phy0>; + + stmmac_axi_setup: stmmac-axi-config { + snps,lpi_en; + snps,wr_osr_lmt = <0xf>; + snps,rd_osr_lmt = <0xf>; + snps,blen = <16 8 4 0 0 0 0>; + }; + + mtl_rx_setup: rx-queues-config { + snps,rx-queues-to-use = <4>; + snps,rx-sched-sp; + + queue0 { + snps,dcb-algorithm; + snps,priority = <0x1>; + snps,map-to-dma-channel = <0>; + }; + + queue1 { + snps,dcb-algorithm; + snps,priority = <0x2>; + snps,map-to-dma-channel = <1>; + }; + + queue2 { + snps,dcb-algorithm; + snps,priority = <0x4>; + snps,map-to-dma-channel = <2>; + }; + + queue3 { + snps,dcb-algorithm; + snps,priority = <0x8>; + snps,map-to-dma-channel = <3>; + }; + }; + + mtl_tx_setup: tx-queues-config { + snps,tx-queues-to-use = <4>; + + queue0 { + snps,dcb-algorithm; + snps,priority = <0x1>; + }; + + queue1 { + snps,dcb-algorithm; + snps,priority = <0x2>; + }; + + queue2 { + snps,dcb-algorithm; + snps,priority = <0x4>; + }; + + queue3 { + snps,dcb-algorithm; + snps,priority = <0x1>; + }; + }; + + mdio { + #address-cells = <1>; + #size-cells = <0>; + compatible = "snps,dwmac-mdio"; + + phy0: ethernet-phy@0 { + reg = <0>; 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Wed, 16 Apr 2025 03:40:27 -0700 (PDT) Received: from iku.Home ([2a06:5906:61b:2d00:b4a2:e121:10d6:ac54]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39eae964089sm16824975f8f.15.2025.04.16.03.40.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Apr 2025 03:40:26 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Philipp Zabel , Geert Uytterhoeven , Magnus Damm , "Russell King (Oracle)" , Giuseppe Cavallaro , Jose Abreu Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH net-next v7 3/4] net: stmmac: Add DWMAC glue layer for Renesas GBETH Date: Wed, 16 Apr 2025 11:40:14 +0100 Message-ID: <20250416104015.47788-4-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Add the DWMAC glue layer for the GBETH IP found in the Renesas RZ/V2H(P) SoC. Signed-off-by: Lad Prabhakar Reviewed-by: Russell King (Oracle) --- drivers/net/ethernet/stmicro/stmmac/Kconfig | 11 ++ drivers/net/ethernet/stmicro/stmmac/Makefile | 1 + .../stmicro/stmmac/dwmac-renesas-gbeth.c | 146 ++++++++++++++++++ 3 files changed, 158 insertions(+) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c diff --git a/drivers/net/ethernet/stmicro/stmmac/Kconfig b/drivers/net/ethernet/stmicro/stmmac/Kconfig index 3c820ef56775..2c99b23f0faa 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Kconfig +++ b/drivers/net/ethernet/stmicro/stmmac/Kconfig @@ -131,6 +131,17 @@ config DWMAC_QCOM_ETHQOS This selects the Qualcomm ETHQOS glue layer support for the stmmac device driver. +config DWMAC_RENESAS_GBETH + tristate "Renesas RZ/V2H(P) GBETH support" + default ARCH_RENESAS + depends on OF && (ARCH_RENESAS || COMPILE_TEST) + help + Support for Gigabit Ethernet Interface (GBETH) on Renesas + RZ/V2H(P) SoCs. + + This selects the Renesas RZ/V2H(P) Soc specific glue layer support + for the stmmac device driver. + config DWMAC_ROCKCHIP tristate "Rockchip dwmac support" default ARCH_ROCKCHIP diff --git a/drivers/net/ethernet/stmicro/stmmac/Makefile b/drivers/net/ethernet/stmicro/stmmac/Makefile index 594883fb4164..91050215511b 100644 --- a/drivers/net/ethernet/stmicro/stmmac/Makefile +++ b/drivers/net/ethernet/stmicro/stmmac/Makefile @@ -20,6 +20,7 @@ obj-$(CONFIG_DWMAC_LPC18XX) += dwmac-lpc18xx.o obj-$(CONFIG_DWMAC_MEDIATEK) += dwmac-mediatek.o obj-$(CONFIG_DWMAC_MESON) += dwmac-meson.o dwmac-meson8b.o obj-$(CONFIG_DWMAC_QCOM_ETHQOS) += dwmac-qcom-ethqos.o +obj-$(CONFIG_DWMAC_RENESAS_GBETH) += dwmac-renesas-gbeth.o obj-$(CONFIG_DWMAC_ROCKCHIP) += dwmac-rk.o obj-$(CONFIG_DWMAC_RZN1) += dwmac-rzn1.o obj-$(CONFIG_DWMAC_S32) += dwmac-s32.o diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c new file mode 100644 index 000000000000..f34bec7794e2 --- /dev/null +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c @@ -0,0 +1,146 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * dwmac-renesas-gbeth.c - DWMAC Specific Glue layer for Renesas GBETH + * + * The Rx and Tx clocks are supplied as follows for the GBETH IP. + * + * Rx / Tx + * -------+------------- on / off ------- + * | + * | Rx-180 / Tx-180 + * +---- not ---- on / off ------- + * + * Copyright (C) 2025 Renesas Electronics Corporation + */ + +#include +#include +#include +#include +#include + +#include "stmmac_platform.h" + +struct renesas_gbeth { + struct plat_stmmacenet_data *plat_dat; + struct reset_control *rstc; + struct device *dev; +}; + +static const char *const renesas_gbeth_clks[] = { + "tx", "tx-180", "rx", "rx-180", +}; + +static int renesas_gbeth_init(struct platform_device *pdev, void *priv) +{ + struct plat_stmmacenet_data *plat_dat; + struct renesas_gbeth *gbeth = priv; + int ret; + + plat_dat = gbeth->plat_dat; + + ret = reset_control_deassert(gbeth->rstc); + if (ret) { + dev_err(gbeth->dev, "Reset deassert failed\n"); + return ret; + } + + ret = clk_bulk_prepare_enable(plat_dat->num_clks, + plat_dat->clks); + if (ret) + reset_control_assert(gbeth->rstc); + + return 0; +} + +static void renesas_gbeth_exit(struct platform_device *pdev, void *priv) +{ + struct plat_stmmacenet_data *plat_dat; + struct renesas_gbeth *gbeth = priv; + int ret; + + plat_dat = gbeth->plat_dat; + + clk_bulk_disable_unprepare(plat_dat->num_clks, plat_dat->clks); + + ret = reset_control_assert(gbeth->rstc); + if (ret) + dev_err(gbeth->dev, "Reset assert failed\n"); +} + +static int renesas_gbeth_probe(struct platform_device *pdev) +{ + struct plat_stmmacenet_data *plat_dat; + struct stmmac_resources stmmac_res; + struct device *dev = &pdev->dev; + struct renesas_gbeth *gbeth; + unsigned int i; + int err; + + err = stmmac_get_platform_resources(pdev, &stmmac_res); + if (err) + return dev_err_probe(dev, err, + "failed to get resources\n"); + + plat_dat = devm_stmmac_probe_config_dt(pdev, stmmac_res.mac); + if (IS_ERR(plat_dat)) + return dev_err_probe(dev, PTR_ERR(plat_dat), + "dt configuration failed\n"); + + gbeth = devm_kzalloc(dev, sizeof(*gbeth), GFP_KERNEL); + if (!gbeth) + return -ENOMEM; + + plat_dat->num_clks = ARRAY_SIZE(renesas_gbeth_clks); + plat_dat->clks = devm_kcalloc(dev, plat_dat->num_clks, + sizeof(*plat_dat->clks), GFP_KERNEL); + if (!plat_dat->clks) + return -ENOMEM; + + for (i = 0; i < plat_dat->num_clks; i++) + plat_dat->clks[i].id = renesas_gbeth_clks[i]; + + err = devm_clk_bulk_get(dev, plat_dat->num_clks, plat_dat->clks); + if (err < 0) + return err; + + plat_dat->clk_tx_i = stmmac_pltfr_find_clk(plat_dat, "tx"); + if (!plat_dat->clk_tx_i) + return dev_err_probe(dev, -EINVAL, + "error finding tx clock\n"); + + gbeth->rstc = devm_reset_control_get_exclusive(dev, NULL); + if (IS_ERR(gbeth->rstc)) + return PTR_ERR(gbeth->rstc); + + gbeth->dev = dev; + gbeth->plat_dat = plat_dat; + plat_dat->bsp_priv = gbeth; + plat_dat->set_clk_tx_rate = stmmac_set_clk_tx_rate; + plat_dat->init = renesas_gbeth_init; + plat_dat->exit = renesas_gbeth_exit; + plat_dat->flags |= STMMAC_FLAG_HWTSTAMP_CORRECT_LATENCY | + STMMAC_FLAG_EN_TX_LPI_CLK_PHY_CAP | + STMMAC_FLAG_SPH_DISABLE; + + return devm_stmmac_pltfr_probe(pdev, plat_dat, &stmmac_res); +} + +static const struct of_device_id renesas_gbeth_match[] = { + { .compatible = "renesas,rzv2h-gbeth", }, + { /* Sentinel */ } +}; +MODULE_DEVICE_TABLE(of, renesas_gbeth_match); + +static struct platform_driver renesas_gbeth_driver = { + .probe = renesas_gbeth_probe, + .driver = { + .name = "renesas-gbeth", + .of_match_table = renesas_gbeth_match, + }, +}; +module_platform_driver(renesas_gbeth_driver); + +MODULE_AUTHOR("Lad Prabhakar "); +MODULE_DESCRIPTION("Renesas GBETH DWMAC Specific Glue layer"); 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Wed, 16 Apr 2025 03:40:28 -0700 (PDT) Received: from iku.Home ([2a06:5906:61b:2d00:b4a2:e121:10d6:ac54]) by smtp.gmail.com with ESMTPSA id ffacd0b85a97d-39eae964089sm16824975f8f.15.2025.04.16.03.40.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 16 Apr 2025 03:40:28 -0700 (PDT) From: Prabhakar X-Google-Original-From: Prabhakar To: Andrew Lunn , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue , Richard Cochran , Philipp Zabel , Geert Uytterhoeven , Magnus Damm , "Russell King (Oracle)" , Giuseppe Cavallaro , Jose Abreu Cc: netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, Prabhakar , Biju Das , Fabrizio Castro , Lad Prabhakar Subject: [PATCH net-next v7 4/4] MAINTAINERS: Add entry for Renesas RZ/V2H(P) DWMAC GBETH glue layer driver Date: Wed, 16 Apr 2025 11:40:15 +0100 Message-ID: <20250416104015.47788-5-prabhakar.mahadev-lad.rj@bp.renesas.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> References: <20250416104015.47788-1-prabhakar.mahadev-lad.rj@bp.renesas.com> Precedence: bulk X-Mailing-List: linux-renesas-soc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Lad Prabhakar Add a new MAINTAINERS entry for the Renesas RZ/V2H(P) DWMAC GBETH glue layer driver. Signed-off-by: Lad Prabhakar --- MAINTAINERS | 8 ++++++++ 1 file changed, 8 insertions(+) diff --git a/MAINTAINERS b/MAINTAINERS index 1248443035f4..f5141da4d509 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -20606,6 +20606,14 @@ S: Maintained F: Documentation/devicetree/bindings/usb/renesas,rzn1-usbf.yaml F: drivers/usb/gadget/udc/renesas_usbf.c +RENESAS RZ/V2H(P) DWMAC GBETH GLUE LAYER DRIVER +M: Lad Prabhakar +L: netdev@vger.kernel.org +L: linux-renesas-soc@vger.kernel.org +S: Supported +F: Documentation/devicetree/bindings/net/renesas,r9a09g057-gbeth.yaml +F: drivers/net/ethernet/stmicro/stmmac/dwmac-renesas-gbeth.c + RENESAS RZ/V2M I2C DRIVER M: Fabrizio Castro L: linux-i2c@vger.kernel.org