From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-io1-f53.google.com (mail-io1-f53.google.com [209.85.166.53]) (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 DFF6D20FA98 for ; Fri, 11 Apr 2025 15:44:26 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.53 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744386268; cv=none; b=aUZyhcJH1a4HKfFGFJFsXcYkv/1+DBZv4TURTVPTSZ3BB9g+pUTkX/RdfvoFy3jGoAaGXPzTC89C2sfuw+b3Eb6Ch3HjDK42kqynZ/ioLOdMS+YHNxtIvUe6TW4cVWWXIYZAXsba73IyHZGlXk40yoYi1D1VdOE8xblmk37syEE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1744386268; c=relaxed/simple; bh=7ZoS0xY5agHPaulRb3cD8XGDbf5Uto+nLhFfKAqokok=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=g4J0nDU4l2IXwUCNThLTJGjcBdqg6Bm2SH849rACt1ySL3ojTeLB5LqDBv3Hips/huPrdzEH04Zrmj67cMsOwlYzmr9W8HxoFu68ZOKvksboHg5xak9ln0v0S0tobU9DnfP0g0BJPe4iTwNcSawR+Lpdno39Bn1hLCHBgmAkweQ= 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=A7U5S+1m; arc=none smtp.client-ip=209.85.166.53 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="A7U5S+1m" Received: by mail-io1-f53.google.com with SMTP id ca18e2360f4ac-86142446f3fso54613039f.2 for ; Fri, 11 Apr 2025 08:44:26 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1744386266; x=1744991066; darn=lists.linux.dev; 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=lNEtTIi2VK5ry0lwico5I+3DkBAdLoSFhiEvmP3qbmk=; b=A7U5S+1mBcTldXyCsmy4dWQ7fDTiCKMg+aZZef5RP7KsV96KYuWerXVwDEYb2lA853 prYa7jasppRZxjvZNUrh6peMwnbAFlBgFqKkDNvbPUR2VZjNSCsNPWNZBBwrGI6sKPSA 6GCEwOEuqx/w8Ia+JD1uYv6lgwgkOMtdROQpz3dMVuvwCtkbMwGyBClTESC9EhEQiqhU f8CAEf5MZ85Q9TvBXZXA0HlyUXs+maF4aAJ/Qaxf0VDMzfK6s7+j+ikBnrqEgsJKbqpa Gy2D1ryweEzjzaVpEFVjpnmwFOFOrSaj92TbIpikUMJXJDNbKjXDVKMttWFMV+zXwne1 /4nQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1744386266; x=1744991066; 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=lNEtTIi2VK5ry0lwico5I+3DkBAdLoSFhiEvmP3qbmk=; b=Br3yISOTeNHqvntkOZL4LDi6pWq7BitOHhGL9BXuZcNGeFzcHZeuWWgTEmroLJB/Wv N3Ooqb6HvF81uF1oErvmhkivAkYM4vfTbt60TX7vwJ6xSfelFMOELrmf0jDxJjc5eLGw FyQOh9HsOQgAhZnl2RskG1AvaMBGZVcmW9y7jt//GS5pE4vFeyhFYVyGXNm1FIp3fnKK AVkLAVfaBaivKf8u+heYDYZ5UBC1UtCqO93wBD2WNiJBx9xuMUxtwUq/yOniNncoC9Sy 0C0N7haLiWo0FFb1TyqYHC6Sdj2ajlDuelPWrM6h8JkZaOgpEst0UNsTCOByYn6GapWf Mbrg== X-Forwarded-Encrypted: i=1; AJvYcCVFMe9jAPosGmQ41M53dpcBgspj9YgLJ6D8KDCJqoxyuBhoig1k+LcB/JlC9gOhxAVRKOopdhwwkw==@lists.linux.dev X-Gm-Message-State: AOJu0YwbGs8W0rQFBZ0B6jxoutXHAIvsS1I9EW5hOZADvaYbKcZtHYNH aCJlFYBmotnDzRailgK2MeHpMTzze2FqCFghYM5yNTNE6xCi+LoOV9JJpEWY308= X-Gm-Gg: ASbGncttNTiCJHySHx12z7REYcUyDM4ulELReJZuisPSqWzUA5244E0giYbWUb79bPC Vf9+ua+Yg063ggGTi90EKllPwrHU3PN9KOcOwPUuX0c68p4t1SxxmJzojRrpdkdpG08DwHHFSci Yb7iK/9oPxXe7NuF6omXZ/Hq4HEakxjZMeW+nNoyfM7eOohGih63lczkXeBYQU8uHx+pKghNsWp ePwDm1Dk91+GQfdGkd1gsffwWIYF9RzPYxb4EH30T72DaNVZYMexHT8fmmPQGlTvnpmdmaSz4Rw X3vmHED0qhg4GsdA8m35mSnEeBgNFQnDINCzJg2FB6u9QGDofMim8Ta47AKGKFo+ekXXMG9+D22 WPMBtiJUtrEl+gw== X-Google-Smtp-Source: AGHT+IHmZJkLUp0ElYixFb0pqy12kzxcoZbzdEnj5SOiajP/nfCU4MY0cVdJxZEZG4e9zsnEIRAxIQ== X-Received: by 2002:a05:6602:3789:b0:85e:2eba:20ad with SMTP id ca18e2360f4ac-8617cb4660cmr336071839f.2.1744386265918; Fri, 11 Apr 2025 08:44:25 -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-4f505cf812dsm1276326173.18.2025.04.11.08.44.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 11 Apr 2025 08:44:25 -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 v3 1/3] dt-bindings: serial: 8250: support an optional second clock Date: Fri, 11 Apr 2025 10:44:16 -0500 Message-ID: <20250411154419.1379529-2-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250411154419.1379529-1-elder@riscstar.com> References: <20250411154419.1379529-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: spacemit@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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) --- v3: Added Rob's Reviewed-by tag .../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: -- 2.45.2