From nobody Tue Apr 7 07:09:09 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 89A97C3DA6B for ; Tue, 30 Aug 2022 02:08:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229843AbiH3CIf (ORCPT ); Mon, 29 Aug 2022 22:08:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50130 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229602AbiH3CIa (ORCPT ); Mon, 29 Aug 2022 22:08:30 -0400 Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 46DD285FCC; Mon, 29 Aug 2022 19:08:29 -0700 (PDT) Received: from compute2.internal (compute2.nyi.internal [10.202.2.46]) by mailout.nyi.internal (Postfix) with ESMTP id CD23E5C00AC; Mon, 29 Aug 2022 22:08:27 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute2.internal (MEProxy); Mon, 29 Aug 2022 22:08:27 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1661825307; x=1661911707; bh=hr iNRaqge8di6Ww36SKeJsUSNLWsxQP2UWUeu3Y6Tt8=; b=f4BT1sPJL4o7WzjcBR 1jqIBj5zF9YuD90LCO+y1KLCajAdeYlWJ2FdrnqYeLae8kERPLpMLaZ+FlmgMt12 rgsuWW+534sr0D+C63FS+HHvsbnqPSZzeoKxFP4Oc0bmmdyYGvkjr7e67Xtd7RAo q1Rhfj8qxSqqhmig/LoQ5HLRP/TMkhbM9JBCkFB35CxQtqfFmrQ+P+jHUe1r0INe XQn7MN1j4AZx8IZJnFu6HYR4FLFbUzggtqSAGdDSO9y6Whx0YcgJr7DjB3PyLtVa 0x29H0Fk+CHV3/4Ht0tZsBs1wPOAQVcznlfYKUplLmi77O4KrBQ0cOvuVxCd1f2K 2ylQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; t=1661825307; x=1661911707; bh=hriNRaqge8di6 Ww36SKeJsUSNLWsxQP2UWUeu3Y6Tt8=; b=PgSbXtigZzpay4QdeHzHdaRjSntAa aIjlTnlB+8Nofy9QzgE2BRQ3ZUr4UxFPeUxI9iy9xpv8mQ4a0+CnMukc4QwvYPX4 t88g8hFvcRRCF33kNChivE489sIRk6YL5Lp4bdhcp0rtNsfxM33Iu9uBgqKdRh2/ rF48o7RxQxMEqbcR1+khfkdI6BA3DorifLH/OoOBTs2F8ZJfkiUkhT+eeKij2EEN rP5yiqn3P55aK5X61P2vM0IPbiGX9920jEXhH3Y19VnHxvfPIQssIaywSF64tR+u Fvges9yZUoN/HAZgCIc8SVg6fbLA9c4393ZUxkyBBH4AatA1mKvZkKoFQ== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdekvddgheehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufgrmhhu vghlucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecugg ftrfgrthhtvghrnhepudekteeuudehtdelteevgfduvddvjefhfedulefgudevgeeghefg udefiedtveetnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrh homhepshgrmhhuvghlsehshhholhhlrghnugdrohhrgh X-ME-Proxy: Feedback-ID: i0ad843c9:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 29 Aug 2022 22:08:27 -0400 (EDT) From: Samuel Holland To: Chen-Yu Tsai , Jernej Skrabec Cc: Samuel Holland , Gregory CLEMENT , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: [PATCH 1/3] dt-bindings: i2c: mv64xxx: Document DMA properties Date: Mon, 29 Aug 2022 21:08:22 -0500 Message-Id: <20220830020824.62288-2-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220830020824.62288-1-samuel@sholland.org> References: <20220830020824.62288-1-samuel@sholland.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Allwinner's I2C offload engine includes bidirectional DMA support. Add the properties for describing this in the devicetree. "dmas" is optional because not all instances of the controller have their DRQs hooked up. For example, R_I2C0 and R_I2C1 on V536 have no DRQ number assigned. Signed-off-by: Samuel Holland Reviewed-by: Krzysztof Kozlowski --- .../bindings/i2c/marvell,mv64xxx-i2c.yaml | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml= b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml index 0ec033e48830..63d665a4f9bb 100644 --- a/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml +++ b/Documentation/devicetree/bindings/i2c/marvell,mv64xxx-i2c.yaml @@ -66,6 +66,19 @@ properties: resets: maxItems: 1 =20 + dmas: + items: + - description: RX DMA Channel + - description: TX DMA Channel + + dma-names: + items: + - const: rx + - const: tx + +dependencies: + dmas: [ dma-names ] + required: - compatible - reg --=20 2.35.1 From nobody Tue Apr 7 07:09:09 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 08E64ECAAD3 for ; Tue, 30 Aug 2022 02:08:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229909AbiH3CIq (ORCPT ); Mon, 29 Aug 2022 22:08:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50134 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229697AbiH3CIb (ORCPT ); Mon, 29 Aug 2022 22:08:31 -0400 Received: from out3-smtp.messagingengine.com (out3-smtp.messagingengine.com [66.111.4.27]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A16EE86046; Mon, 29 Aug 2022 19:08:29 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.nyi.internal (Postfix) with ESMTP id 0ED665C01C6; Mon, 29 Aug 2022 22:08:29 -0400 (EDT) Received: from mailfrontend1 ([10.202.2.162]) by compute3.internal (MEProxy); Mon, 29 Aug 2022 22:08:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=sholland.org; h= cc:cc:content-transfer-encoding:date:date:from:from:in-reply-to :in-reply-to:message-id:mime-version:references:reply-to:sender :subject:subject:to:to; s=fm2; t=1661825309; x=1661911709; bh=aq ERgIMNt16j+SVHZUcamE4zlhsBe0bcYHWFUyOTwKw=; b=VWBoq6yWkw5+41nvWS gslhd2UCl6nA5gZ0g9XNpFDCSgdYhobxIrmuKjtyz0qy17DY0Zp4swsla//wqDbl ylSrOUE23m/B7mCxduoGNq6wjbZk0nYrWcOO0SU263+YPm7s8s+1vxLrEnEO6mHI S14dOs4/Qxbsxgs2T8zWLr9P3thI0XRZDGZb63Ob3yaDUoVXPGy+N3iWXL7QRH06 jEr6UlmrjoTaR58LEsxor1uHOCgROgoLfunOLU2xRFX9npn+ghKu4TTVSFCBjnl9 wQJuX5CmpgVD5ST2LzryV4r7wN+VbgCXjr+6DBK3xiWa1mF/YOVyR4i79z1hXtc9 iZmA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-transfer-encoding:date:date :feedback-id:feedback-id:from:from:in-reply-to:in-reply-to :message-id:mime-version:references:reply-to:sender:subject :subject:to:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm1; t=1661825309; x=1661911709; bh=aqERgIMNt16j+ SVHZUcamE4zlhsBe0bcYHWFUyOTwKw=; b=1VynNZDBXvRgC1E9/8dEzFjirj2bq j1Fg0hGu1ya+CjICj24ZMGWhqmdXofL+5mEWMazaKNlcc1d87juyD4YioyFdh1k/ GX7upmmiAz3A5UD2xLyahQ5dQxQSMsO367y7t0Fr6tl9lBj56pnRaRJDOQ+hMfhR EkRPBDLtRPtnP5JE0UnTS5bkv1rYRpt8zUbPyxFBYv0j9XoQCV0V2rHiTFcEW3fz DWeZq1KKRUmihF7/XqUiSLRMUnhdah1hNcavm12OuRzn+BVtl6tUU7qjKgserQHE g+Xb+e1K426Y6ZdNyofnEAXscMo+K6XGN8aNMqRmlz8cQTTFolYAiGosA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdekvddgheehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvvefufffkofgjfhgggfestdekredtredttdenucfhrhhomhepufgrmhhu vghlucfjohhllhgrnhguuceoshgrmhhuvghlsehshhholhhlrghnugdrohhrgheqnecugg ftrfgrthhtvghrnhepudekteeuudehtdelteevgfduvddvjefhfedulefgudevgeeghefg udefiedtveetnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpehmrghilhhfrh homhepshgrmhhuvghlsehshhholhhlrghnugdrohhrgh X-ME-Proxy: Feedback-ID: i0ad843c9:Fastmail Received: by mail.messagingengine.com (Postfix) with ESMTPA; Mon, 29 Aug 2022 22:08:28 -0400 (EDT) From: Samuel Holland To: Chen-Yu Tsai , Jernej Skrabec Cc: Samuel Holland , Gregory CLEMENT , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev, Yangtao Li Subject: [PATCH 2/3] arm64: dts: allwinner: a100: Add device node for DMA controller Date: Mon, 29 Aug 2022 21:08:23 -0500 Message-Id: <20220830020824.62288-3-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220830020824.62288-1-samuel@sholland.org> References: <20220830020824.62288-1-samuel@sholland.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" From: Yangtao Li The A100 SoC has a DMA controller that supports 8 DMA channels to and from various peripherals. Add a device node for it. Signed-off-by: Yangtao Li Signed-off-by: Samuel Holland Reviewed-by: Jernej Skrabec --- Changes in v1: - From previous submission: fixed off-by-one in dma-requests property arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi b/arch/arm64/bo= ot/dts/allwinner/sun50i-a100.dtsi index 548539c93ab0..5453a3bb7d81 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi @@ -101,6 +101,18 @@ ccu: clock@3001000 { #reset-cells =3D <1>; }; =20 + dma: dma-controller@3002000 { + compatible =3D "allwinner,sun50i-a100-dma"; + reg =3D <0x03002000 0x1000>; + interrupts =3D ; + clocks =3D <&ccu CLK_BUS_DMA>, <&ccu CLK_MBUS_DMA>; + clock-names =3D "bus", "mbus"; + resets =3D <&ccu RST_BUS_DMA>; + dma-channels =3D <8>; + dma-requests =3D <52>; + #dma-cells =3D <1>; + }; + gic: interrupt-controller@3021000 { compatible =3D "arm,gic-400"; reg =3D <0x03021000 0x1000>, <0x03022000 0x2000>, --=20 2.35.1 From nobody Tue Apr 7 07:09:09 2026 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0763FECAAD2 for ; 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Mon, 29 Aug 2022 22:08:29 -0400 (EDT) From: Samuel Holland To: Chen-Yu Tsai , Jernej Skrabec Cc: Samuel Holland , Gregory CLEMENT , Krzysztof Kozlowski , Rob Herring , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org, linux-sunxi@lists.linux.dev Subject: [PATCH 3/3] arm64: dts: allwinner: a100: Add I2C DMA requests Date: Mon, 29 Aug 2022 21:08:24 -0500 Message-Id: <20220830020824.62288-4-samuel@sholland.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220830020824.62288-1-samuel@sholland.org> References: <20220830020824.62288-1-samuel@sholland.org> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" The I2C controllers in the A100 SoC are all connected to the DMA engine. Signed-off-by: Samuel Holland Reviewed-by: Jernej Skrabec --- arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi b/arch/arm64/bo= ot/dts/allwinner/sun50i-a100.dtsi index 5453a3bb7d81..97e3e6907acd 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-a100.dtsi @@ -221,6 +221,8 @@ i2c0: i2c@5002000 { interrupts =3D ; clocks =3D <&ccu CLK_BUS_I2C0>; resets =3D <&ccu RST_BUS_I2C0>; + dmas =3D <&dma 43>, <&dma 43>; + dma-names =3D "rx", "tx"; status =3D "disabled"; #address-cells =3D <1>; #size-cells =3D <0>; @@ -234,6 +236,8 @@ i2c1: i2c@5002400 { interrupts =3D ; clocks =3D <&ccu CLK_BUS_I2C1>; resets =3D <&ccu RST_BUS_I2C1>; + dmas =3D <&dma 44>, <&dma 44>; + dma-names =3D "rx", "tx"; status =3D "disabled"; #address-cells =3D <1>; #size-cells =3D <0>; @@ -247,6 +251,8 @@ i2c2: i2c@5002800 { interrupts =3D ; clocks =3D <&ccu CLK_BUS_I2C2>; resets =3D <&ccu RST_BUS_I2C2>; + dmas =3D <&dma 45>, <&dma 45>; + dma-names =3D "rx", "tx"; status =3D "disabled"; #address-cells =3D <1>; #size-cells =3D <0>; @@ -260,6 +266,8 @@ i2c3: i2c@5002c00 { interrupts =3D ; clocks =3D <&ccu CLK_BUS_I2C3>; resets =3D <&ccu RST_BUS_I2C3>; + dmas =3D <&dma 46>, <&dma 46>; + dma-names =3D "rx", "tx"; status =3D "disabled"; #address-cells =3D <1>; #size-cells =3D <0>; @@ -337,6 +345,8 @@ r_i2c0: i2c@7081400 { interrupts =3D ; clocks =3D <&r_ccu CLK_R_APB2_I2C0>; resets =3D <&r_ccu RST_R_APB2_I2C0>; + dmas =3D <&dma 50>, <&dma 50>; + dma-names =3D "rx", "tx"; pinctrl-names =3D "default"; pinctrl-0 =3D <&r_i2c0_pins>; status =3D "disabled"; @@ -352,6 +362,8 @@ r_i2c1: i2c@7081800 { interrupts =3D ; clocks =3D <&r_ccu CLK_R_APB2_I2C1>; resets =3D <&r_ccu RST_R_APB2_I2C1>; + dmas =3D <&dma 51>, <&dma 51>; + dma-names =3D "rx", "tx"; pinctrl-names =3D "default"; pinctrl-0 =3D <&r_i2c1_pins>; status =3D "disabled"; --=20 2.35.1