From patchwork Wed Apr 9 19:22:11 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Elder X-Patchwork-Id: 879638 Received: from mail-il1-f180.google.com (mail-il1-f180.google.com [209.85.166.180]) (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 655B91E51F5 for ; Wed, 9 Apr 2025 19:22:20 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.180 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744226542; cv=none; b=uwD4GsQbLb6fv43u6q1IjXZnrDDMWsHbkaoeZq6yweXDRBSaPdWVr3QMbr/kcY6PquEqVHR0ku74YcDr5XoereellpkDuhVc6MtbVYeWcCOAaP3ga+ZOoUKfg4KIToveVOyFK/NAz9hZfdjaXv1VVfnAtPRCjfcjopxc6mstJsY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744226542; c=relaxed/simple; bh=he9IA1+sEmtGpV+RfD/yvwaHIPJw7FZcA+CsPKHLNsY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=mbdB5dRPf0enbUU66vKbKU4MwDKpkNMF3t9zFT22ijah+IJOgOrPxz/dtyFpx8CCdTy8ZP4f3JIRHQijeXNVLWEVxTZSm98bcqE9j8NiWBiSBG/brysOUwrCHpPKsgNaTbwNGN3s3y+qpPZgkDZLWM+ZR9usOW7h1c9rUjYPUpo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com; spf=pass smtp.mailfrom=riscstar.com; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b=lut8q8Ni; arc=none smtp.client-ip=209.85.166.180 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=riscstar.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=riscstar.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=riscstar-com.20230601.gappssmtp.com header.i=@riscstar-com.20230601.gappssmtp.com header.b="lut8q8Ni" Received: by mail-il1-f180.google.com with SMTP id e9e14a558f8ab-3d589ed2b47so333115ab.2 for ; Wed, 09 Apr 2025 12:22:20 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1744226539; x=1744831339; 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=bAZLFz1IGr5iGWJpnMiF/uKgFNwzC6PY6kuRk72SglQ=; b=lut8q8Ni1hbyZx9cevMEU3YqMOUhsQhPKqmJAgDc6cYYex6kdQ/QLfIU60sQNgD7g8 JimgNl640PCTK+FpDRplBPvlvuKDdRe6DUfPxjQSM+hsymxq8POEfX7A2Jf0n5YkrxKn f2ybj/ajrmfvuGMqT49IAmXdrgFnKaf59WioJQUSS8Ps2mHdslboQOxOGOsLfx2ib2G4 GVt2GgaIfyRLLfRPSkfyytr0BVe2WYI104UkkYW8TaVcTvJ2koBiG1++5uepyrKQeNvB 7o9kqfqEWR5pfcB7Qu+7/dlXSkLuGLwauXtrcZ6AVTn3XRwcK6hI3E7fnIAQSLvRMEWC pKFQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744226539; x=1744831339; 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=bAZLFz1IGr5iGWJpnMiF/uKgFNwzC6PY6kuRk72SglQ=; b=jDID5oam9+Ec2c+IsWJvp0slFzPf/e2J3b1F32ET37L7HC4NjN28ZjI1fqdlFfSQMZ 2bjq7bWyG1QJHbn8pOrIwSkXshPqlywEbrHW5vd23eZedHgW6pB3tUgd1K2zMhDEeLw6 NT52dsQelpbsAGNzJfXFhaU8GQv0LVBhtjE9RgRjGJYd5EoCD3Py2WzAk+jM/n7HpaHx PXfF1lDOiTDWu/oAMQYs0JTcNI3VfJMlTLrYgtKkPHhglLm47DFVz9Wx1MCdho5zxZ6+ QPKDgwy0p6r5mTK/ROlG2fIbgIktS0G4xvcQ0slgB4TsxXGJuP7GeakewAI4m5ainoXE 2N/w== X-Forwarded-Encrypted: i=1; AJvYcCVMA2GE+5HQBSGOaVuHkoAVpOSIaKex/OrUsQHpZXZocMfOWC6O3VroRtRyOMHe1CN/v75u72VE2EDau78=@vger.kernel.org X-Gm-Message-State: AOJu0Ywhk1v8wWHywg4M8AFmJ4IYeJzDJEsnxExNqNrNUp6KJFmM/Jgn 2TLVa4lhtPINQrLsJkczoLcafz2kPBkVbPuLO28rnn55em4HDVzpa/LmbFsb7Gw= X-Gm-Gg: ASbGncss/01usnlRwSYLRnJWZ0wHjXJXScQse6LjXhwqMSDIcLFtApCUnGm0G9ibjRP S3M3x2LvFiwZsGqMSSMHvm7OlQvPRGwcEDqC2/zLGvwrGVBlXnz9v7duKPRQ46C4exmAiTBHJtM +avu+r9eWRAwomexHLMAfhYxQ4ATzaj4zI66BPb0RU+Qqhhj/3VqfrfVIH4Qb8JIJnuwj+5pVET aSFht1ZifgA2itIGgwi8PLMyEqyydacdg+qKy1kgndT4RJkCTFsltOdrPpHneqm6cFNR6rv/tKP 8AguIi4aTYxBnKlUFI07KP3TgBASxXraRH7xv8mDe4BviUwutOPd1a0YiUbIEAPxvVO1isgJwhi +wCyMtCB+uAwi5Q== X-Google-Smtp-Source: AGHT+IEGuxmewmQbb75m5X7vBqHuIXERuCuTlAE6AMgAdiu3tfh0rm83MqrIv2yAApon5oQTbElRjA== X-Received: by 2002:a05:6e02:1446:b0:3d0:4b3d:75ba with SMTP id e9e14a558f8ab-3d7e46e082cmr3195055ab.4.1744226539359; Wed, 09 Apr 2025 12:22:19 -0700 (PDT) Received: from localhost.localdomain (c-73-228-159-35.hsd1.mn.comcast.net. [73.228.159.35]) by smtp.gmail.com with ESMTPSA id 8926c6da1cb9f-4f505cf81bcsm373459173.10.2025.04.09.12.22.18 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 09 Apr 2025 12:22:19 -0700 (PDT) From: Alex Elder To: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, gregkh@linuxfoundation.org, jirislaby@kernel.org Cc: dlan@gentoo.org, benjamin.larsson@genexis.eu, bastien.curutchet@bootlin.com, andriy.shevchenko@linux.intel.com, u.kleine-koenig@baylibre.com, lkundrak@v3.sk, devicetree@vger.kernel.org, linux-serial@vger.kernel.org, spacemit@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH v2 1/2] dt-bindings: serial: 8250: support an optional second clock Date: Wed, 9 Apr 2025 14:22:11 -0500 Message-ID: <20250409192213.1130181-2-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250409192213.1130181-1-elder@riscstar.com> References: <20250409192213.1130181-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: linux-serial@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 The SpacemiT UART driver requires a bus clock to be enabled in addition to the primary function clock. Add the option to specify two clocks for an 8250-compatible UART, named "core" and "bus". If both are needed, require them to be named. Signed-off-by: Alex Elder Reviewed-by: Rob Herring (Arm) --- v2: Require both clocks to be specified with names for SpacemiT .../devicetree/bindings/serial/8250.yaml | 30 ++++++++++++++++++- 1 file changed, 29 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/serial/8250.yaml b/Documentation/devicetree/bindings/serial/8250.yaml index dc0d52920575f..33d2016b65090 100644 --- a/Documentation/devicetree/bindings/serial/8250.yaml +++ b/Documentation/devicetree/bindings/serial/8250.yaml @@ -135,7 +135,16 @@ properties: clock-frequency: true clocks: - maxItems: 1 + minItems: 1 + items: + - description: The core function clock + - description: An optional bus clock + + clock-names: + minItems: 1 + items: + - const: core + - const: bus resets: maxItems: 1 @@ -224,6 +233,25 @@ required: - reg - interrupts +if: + properties: + compatible: + contains: + const: spacemit,k1-uart +then: + required: [clock-names] + properties: + clocks: + minItems: 2 + clock-names: + minItems: 2 +else: + properties: + clocks: + maxItems: 1 + clock-names: + maxItems: 1 + unevaluatedProperties: false examples: