From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj2-f2.google.com (mail-pj2-f2.google.com [74.125.227.130]) (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 877C34499AA for ; Thu, 9 Jul 2026 22:19:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=74.125.227.130 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783635601; cv=none; b=eRejmMvKpOsaY3JJ12SEeqCVPTbx2rFS0UWi5NS3Xp+gatcn2Y1r5312ZvvB9Y+Ass8tAz8cdNqBtaouC+eC1AV+vAJex1qM2Sj2VRd6GfdaaMLex0+VRX/77JdHgCVEECTcQHA0HYNtMmYZTRDwmm4G0I0nnjdtsMFV6wT2ylA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1783635601; c=relaxed/simple; bh=sAFKHWV8KqUTu6gDLevnzZbNxKSuMUchGXfFTpt8S2Q=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=iQC3W15O8AMbAKtVidd35rR61XGhDyL8AMyi6ZpjiPk+YusKTNwpz3bWiY1Q5fm8UKKdqJf6jFl/4DQafrcqanLzLxG5vMqeh8KFigxEpENxlexA9xWJZ94Ga3RejROP6SQGhkgOSwdOyQy3HWddScaM6SyheFGoisBBcWlC8ig= 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=GsqfNhR7; arc=none smtp.client-ip=74.125.227.130 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="GsqfNhR7" Received: by mail-pj2-f2.google.com with SMTP id 98e67ed59e1d1-37fb1883f59so126062a91.1 for ; Thu, 09 Jul 2026 15:19:59 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1783635599; x=1784240399; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=YejLbZfi82rKmzwOXcCMxrUXNra0A0pYfoVXCBwn/ps=; b=GsqfNhR7kXaDYsknr6tZMaFOaZ9pbRDG0aK2QCPB7bF3xG0fmTjZhczTPWOW2JUmPF 8ZN/zd0TtSoW7kncNgCNw6ix4cIXsxtOmCQIbW2KT1xWHasLngTLJvr8+67dZDlygaNW j8aQtQr/doSFlzoE+FSeFMnRQHx5LuEUovFtpbP2BI8KooifkQjqLaA7EJ0gJnyQ5EgT 1+UQjzTQBzNHUYRcuT3uFJQwhBluhIR+jLt1FpgXmBoQene2baVKgQAMTrCOwBoWfJaF zrHoGueTDzPncqFhrO+8waiNnmGg0l9ahbRHKw5fOfIEeSH0z0JbxUNO/l0fDgQRcBpO jJkg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1783635599; x=1784240399; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=YejLbZfi82rKmzwOXcCMxrUXNra0A0pYfoVXCBwn/ps=; b=Hur3j51ylyHGEf496WQCWnc1QrrDAQkCo00gDhZX2UhuhhjLDP8+Oev+13tjcMrphz MGhopWwAXjRVkY8g6F/KPxFDi/YKg/5a5BfyUQeCzBVR9gq2CA29dgwGjM+L+v6oJv2C y7eOTTE4SrQtBtnpzDrkipFZv9bKwkph9zESD0N1yIF8CfUiHODtETtQih3Mf5f8J/Fw MIqn2+QM2hPOrTzCDg2+FjjmH3xxbCQecNFbxKyY4Q5W6vziv3ihp0J8gCWJlr/qKKjR 4hLCOWgQ5F1ny2gaUNuvvafByD6Y4iw3+BHA+BaM9tMYwuojv1cnXpQpUhxmviM42N8Z PBfA== X-Gm-Message-State: AOJu0YwAOmaC/RN8WAbBnb5aXIWfQuklfHy4ggBP02OXPnEBhIZLJf8t Z/dneWROkg6y3S+UNwO5cac/Rua5Je4XqI675NF8yKyXxWTSiyI+OEHR X-Gm-Gg: AfdE7ckhm3+dwrPoCbHUrhHDlxivdkXlp8RTTHRM1Y/tT4mjSrH+2p//K+HZA716Ycv 6SuIZ6MO9Ih0pCpFkvtjpbSjDG9A/6M1IYs0eWQ12FltCc+jFft0ZrO0RbyW2RI1HJmKzTHgznj bwD3fJyKDvjqQiiX87VZhrv2cBYzXxWw9C8lIg/5L+gsWyD3PXLpTQsNT3uaw5+IqpCLQ+0mUh9 A1Dj3WLGCrmfJ4oVOb0Awh+j+Ya+ky6S2k9oDuDYQFe2kk/xXkBL5g61Dg4kNjF4WX/r/ppY7t9 7dGoDnunJE+P1PXjLI7IsUTerMV5D1enXqtrWX/nQh2v8aZ7235cVT362wmkyJlsfQXkbJfwvYs zjYgbdG2gqT8FJ5BrJ06KcxSl47vYmfc/AH3WhE/UIsBtSxT3BAXux2BlgPe6vWmy8upLARM/lY OB5pUb/TPHlIoU+cnehnp/eyn70zkkI48YSNYE2wakDNP/EqONHaJXfUxAXSrvxiPcdXCF6pAot Npbbyxw2luPgleX X-Received: by 2002:a05:6a20:12d2:b0:3bf:a941:8932 with SMTP id adf61e73a8af0-3c0bcec17cfmr11767969637.19.1783635598702; Thu, 09 Jul 2026 15:19:58 -0700 (PDT) Received: from Tejas-Legion-7-16IRX9.am.students.amrita.edu ([117.193.77.254]) by smtp.gmail.com with ESMTPSA id a92af1059eb24-13b6596681fsm40380498c88.8.2026.07.09.15.19.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 09 Jul 2026 15:19:58 -0700 (PDT) From: Teja Sai Charan B To: Alexandre Belloni , Rob Herring , Krzysztof Kozlowski , Conor Dooley Cc: linux-rtc@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Teja Sai Charan Bellamkonda Subject: [PATCH v3] dt-bindings: rtc: Convert rtc-cmos binding to YAML Date: Fri, 10 Jul 2026 03:49:44 +0530 Message-ID: <20260709221944.159244-1-tejaasaye@gmail.com> X-Mailer: git-send-email 2.43.0 Precedence: bulk X-Mailing-List: linux-rtc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Teja Sai Charan Bellamkonda Convert the rtc-cmos devicetree bindings to dt schema. The original text binding documents only the motorola,mc146818 compatible. Existing in-tree Devicetree sources also use the intel,ce4100-rtc compatible together with the motorola,mc146818 fallback, but this was not documented. Document the Intel variant in the schema so that these existing configurations are accepted during schema validation. Signed-off-by: Teja Sai Charan Bellamkonda --- Changes in v2: - Allow intel,ce4100-rtc compatible used by existing DTS files Changes in v3: - Drop accidentally added result.txt - Fix example unit-address to match reg property --- .../devicetree/bindings/rtc/rtc-cmos.txt | 27 -------- .../devicetree/bindings/rtc/rtc-cmos.yaml | 63 +++++++++++++++++++ 2 files changed, 63 insertions(+), 27 deletions(-) delete mode 100644 Documentation/devicetree/bindings/rtc/rtc-cmos.txt create mode 100644 Documentation/devicetree/bindings/rtc/rtc-cmos.yaml diff --git a/Documentation/devicetree/bindings/rtc/rtc-cmos.txt b/Documentation/devicetree/bindings/rtc/rtc-cmos.txt deleted file mode 100644 index 7d7b5f6bda65..000000000000 --- a/Documentation/devicetree/bindings/rtc/rtc-cmos.txt +++ /dev/null @@ -1,27 +0,0 @@ - Motorola mc146818 compatible RTC -~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ - -Required properties: - - compatible : "motorola,mc146818" - - reg : should contain registers location and length. - -Optional properties: - - interrupts : should contain interrupt. - - ctrl-reg : Contains the initial value of the control register also - called "Register B". - - freq-reg : Contains the initial value of the frequency register also - called "Register A". - -"Register A" and "B" are usually initialized by the firmware (BIOS for -instance). If this is not done, it can be performed by the driver. - -ISA Example: - - rtc@70 { - compatible = "motorola,mc146818"; - interrupts = <8 3>; - interrupt-parent = <&ioapic1>; - ctrl-reg = <2>; - freq-reg = <0x26>; - reg = <1 0x70 2>; - }; diff --git a/Documentation/devicetree/bindings/rtc/rtc-cmos.yaml b/Documentation/devicetree/bindings/rtc/rtc-cmos.yaml new file mode 100644 index 000000000000..e37927e9916c --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/rtc-cmos.yaml @@ -0,0 +1,63 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/rtc/rtc-cmos.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Motorola mc146818 compatible RTC + +maintainers: + - Alexandre Belloni + +properties: + compatible: + oneOf: + - const: motorola,mc146818 + + - items: + - const: intel,ce4100-rtc + - const: motorola,mc146818 + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + ctrl-reg: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Initial value of the control register + (also known as Register B). + + freq-reg: + $ref: /schemas/types.yaml#/definitions/uint32 + description: + Initial value of the frequency register + (also known as Register A). + +required: + - compatible + - reg + +allOf: + - $ref: rtc.yaml# + +unevaluatedProperties: false + +examples: + - | + bus { + #address-cells = <2>; + #size-cells = <1>; + + rtc@1,70 { + compatible = "motorola,mc146818"; + reg = <0x1 0x70 0x2>; + + interrupts = <8 3>; + + ctrl-reg = <2>; + freq-reg = <0x26>; + }; + }; -- 2.43.0