From patchwork Wed Mar 19 09:28:59 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Troy Mitchell X-Patchwork-Id: 14022351 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id D3EDEC36001 for ; Wed, 19 Mar 2025 09:38:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:Cc:To:In-Reply-To:References:Message-Id :MIME-Version:Subject:Date:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=Vj1n0e8T8QO41hmPrsgbGd98YTyaQzdd1eIhAjFvqrk=; b=ZgGmiS5St2L2Qd aSqZ99GaiYy7xVwzqLM4KkbmJXjIQr33M76tt3zzB/d3mH/pEz5+M6QLcyuwr4FysIJWxsoMyZUof /WY8AbpDJ24W4Pxm/qiKqi7dz7GevS5aVjXmTTOT3pNjqy9Q30ebDk0kVtoGQay9xON4+Po3kkrBf Y9eMVrEWnBoyRxQPs4O9d+oOPvVXT2BILcn58RkWUUmNJnyhR/BD8LP8YwGEUIF3/xKvvZo8BaYNS vqW1cq3ZS1JAX42871XNSWSUw48xya0NETi2kSj+QK/4gwVHKb2zz//DQJDqqopxeZKnF/MY/sxVI piHRZ+BlVUyFhTFQflrw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tupsE-00000008WBb-2Eob; Wed, 19 Mar 2025 09:38:06 +0000 Received: from mail-pl1-x644.google.com ([2607:f8b0:4864:20::644]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tupmR-00000008UgW-1A4W for linux-riscv@lists.infradead.org; Wed, 19 Mar 2025 09:32:08 +0000 Received: by mail-pl1-x644.google.com with SMTP id d9443c01a7336-22398e09e39so141698745ad.3 for ; Wed, 19 Mar 2025 02:32:07 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1742376726; x=1742981526; darn=lists.infradead.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=Uh4Y53V77ruJXW8QR5flp6pUeWx/bYICn3Mwn1bkPIM=; b=dm6ml3nnYR2AYwmPJl3GlH3oHExWxJZb/+gL1bRrjP7MPO9KuGrgH1FzIa8UlJKbPZ mY4UGl6n3JhIQHKJptku3DnoaNQZs1dfOtmOk7bV0nQHJgGDY8XWltm5OFinXqXi+cny ZUgWF2vAvpHUJLtlYrZP3lTq/9oQr5RsDlJx/SltYXwtLZdF5uIWmCsDrRAcPQ2zNMgD 3mrDd9MMzd2CsS04lpvvZWsYr9u0kE9LPQ5sp7SH5ei5tF9unuoOm46amcOHQ7kQGXcp 95Xal8S7OVRxsQQcKsq7pD70Ww2oeDxHEwKcCjuM2Zpe5TmHaLjmoo68cMRTOscFMa9G fEnQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1742376726; x=1742981526; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Uh4Y53V77ruJXW8QR5flp6pUeWx/bYICn3Mwn1bkPIM=; b=ClgDcEFb/cAVKLDGelzO1lXdBeVROr6nw12s9HuUGFbGIHeFSJ2KFBWIR6twxzWor5 4gVcm5zW1swma7so1Gw5oq3KjqdVIYk+F9IsHG78wIUrARD4OhpHcBN04HWf7p8DegHe slYk6akMhiTKFMiubs5NeuLBJSAZv+Q1ir4oT3MKSApvINSDUouVVe+WouOVX8V/xWmY Tog8pBQ7hzVfjyCEbkI7DkcIin2Ff/JUCqrto/U1GjmfUHubbzOFiv/lU+5cA2zztcaz 4IPSVvALJL4Wt8/YaYsVb519p4mbu/5tYjBtsPzsv5ukmhYY7p3Ez2+F8Wj6GCs6/IC5 9sVQ== X-Gm-Message-State: AOJu0YzwyCB8oGEu+42rN8H8cAI3m+yJaagSvYP9jvn1DVbALtE0lQkt RdbrrjF/DQX6b+EYSMxu37y4YuVRnibCbD1d1aNXJLyGlUOUH640 X-Gm-Gg: ASbGncvRplcP2HdCNXjLC9EYq+Oa5Qrkya+A5U3TN0vCq2oaG4rSyxy8Xyk5qt506px P+AqrcDSG5C09uL9Ph5ZQhod8VD8cyUuVBsBJh7mAAwjq6uC47eKp8VMHDpxcVqF3Yt9m8/V2qH lyo2OZB/miVnMpCDjRsPiP+9IBlIDnG4JGj90HiBp0oJEHgjhf0E1EsevWEzG1qSmLsHUMIwsA9 xXC6Ctwff+p/lryxUaUql2Kwp4styVZd7+93USD/Kia2a8yF0gZpAQZRCrAXhItKm5I5JpZ+jQb 9QVb5iUAyYHNxtwnlVrg9IvEcPEA X-Google-Smtp-Source: AGHT+IEJ7BbacbEjBca1zxi+l+r4IWpLrgxPdjplfun8EpRskeUbZl5L1DXxfpSILrv8YPi3IzkmNQ== X-Received: by 2002:a05:6a00:1950:b0:736:4d44:8b77 with SMTP id d2e1a72fcca58-7376d602e89mr4285875b3a.8.1742376726411; Wed, 19 Mar 2025 02:32:06 -0700 (PDT) Received: from [127.0.1.1] ([2602:f919:106::1b8]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-737115294b3sm11124315b3a.5.2025.03.19.02.32.02 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Mar 2025 02:32:05 -0700 (PDT) From: Troy Mitchell Date: Wed, 19 Mar 2025 17:28:59 +0800 Subject: [PATCH v8 1/2] dt-bindings: i2c: spacemit: add support for K1 SoC MIME-Version: 1.0 Message-Id: <20250319-k1-i2c-master-v8-1-013e2df2b78d@gmail.com> References: <20250319-k1-i2c-master-v8-0-013e2df2b78d@gmail.com> In-Reply-To: <20250319-k1-i2c-master-v8-0-013e2df2b78d@gmail.com> To: Andi Shyti , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Yixun Lan , Troy Mitchell Cc: linux-riscv@lists.infradead.org, linux-i2c@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, spacemit@lists.linux.dev, Conor Dooley X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=ed25519-sha256; t=1742376553; l=2169; i=troymitchell988@gmail.com; h=from:subject:message-id; bh=XJqQ9vN219kTUQDWWgsn5UwgncFFcAviYm9fDZ7tTqw=; b=ZFqrmrmY/RWmGj7gLZCWgUTyAZDH/C6mwYsfTc7zti10F5HuSECxeuGJzGC70nnaguSUYNzC1 XRwzIOgU+UbBQzELodEkO37GCtbQMP9WNVPJcdR59lFVF2Ap5222r23 X-Developer-Key: i=troymitchell988@gmail.com; a=ed25519; pk=2spEMGBd/Wkpd36N1aD9KFWOk0aHrhVxZQt+jxLXVC0= X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250319_023207_322159_9396791C X-CRM114-Status: GOOD ( 10.72 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org The I2C of K1 supports fast-speed-mode and high-speed-mode, and supports FIFO transmission. Reviewed-by: Conor Dooley Link: https://lore.kernel.org/all/20250128-k1-maintainer-1-v1-1-e5dec4f379eb@gentoo.org [1] Signed-off-by: Troy Mitchell --- .../devicetree/bindings/i2c/spacemit,k1-i2c.yaml | 61 ++++++++++++++++++++++ 1 file changed, 61 insertions(+) diff --git a/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml new file mode 100644 index 0000000000000000000000000000000000000000..3d6aefb0d0f185ba64e414ac7f5b96cd18659fd3 --- /dev/null +++ b/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml @@ -0,0 +1,61 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/i2c/spacemit,k1-i2c.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: I2C controller embedded in SpacemiT's K1 SoC + +maintainers: + - Troy Mitchell + +properties: + compatible: + const: spacemit,k1-i2c + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: I2C Functional Clock + - description: APB Bus Clock + + clock-names: + items: + - const: func + - const: bus + + clock-frequency: + description: | + K1 support three different modes which running different frequencies + standard speed mode: up to 100000 (100Hz) + fast speed mode : up to 400000 (400Hz) + high speed mode : up to 3300000 (3.3Mhz) + default: 400000 + maximum: 3300000 + +required: + - compatible + - reg + - interrupts + - clocks + +unevaluatedProperties: false + +examples: + - | + i2c@d4010800 { + compatible = "spacemit,k1-i2c"; + reg = <0xd4010800 0x38>; + interrupt-parent = <&plic>; + interrupts = <36>; + clocks =<&ccu 32>, <&ccu 84>; + clock-names = "func", "bus"; + clock-frequency = <100000>; + }; + +...