From patchwork Fri Mar 28 21:02:30 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alex Elder X-Patchwork-Id: 14032452 Received: from mail-io1-f45.google.com (mail-io1-f45.google.com [209.85.166.45]) (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 9986C1F2BAE for ; Fri, 28 Mar 2025 21:02:45 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.166.45 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743195767; cv=none; b=nlo0qoJ/wjqDBXxec1xVCAfVDLxirNBytfaylzrG16To9HfHa5qQt0ujjkcYqj3PlvEbCULIMBMPp6oHhSyDSnL7YHhRS6GErD+7WFTka6bppjwlfrpd92hLUYOTX2s97ocYkT4sapl4hMLhOaye3ifdUYC+zruYl9dLM2f/rT4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1743195767; c=relaxed/simple; bh=W73Khioo6n4aH3dJXKfZOTvx1lMN/9LyAeMHDZJ+yK8=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=sNNvP/p5w9BEiBchopue8nePh/VgwDFrQ/GwhZrLg8whRXEur4VvRB6lzcOopZFyEVFt5dnFeomHBQLUt0ZJ+uTIWJu5QcwiBUn1dYjlKY218KomccEbv2EPLeNS0Aa3P3/PDtPu/A1eB0y6BBCkiSZoPfZjbFG1/GaZ2FTTZIs= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=none (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=cXaI+LZN; arc=none smtp.client-ip=209.85.166.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (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="cXaI+LZN" Received: by mail-io1-f45.google.com with SMTP id ca18e2360f4ac-85b41281b50so74700739f.3 for ; Fri, 28 Mar 2025 14:02:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=riscstar-com.20230601.gappssmtp.com; s=20230601; t=1743195765; x=1743800565; 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=rerGx2TveORsLjDrW3hkWd+yAs+YmYyP0wNHZuEm2gw=; b=cXaI+LZN7Fnwc/AaWOcpChEIvFlw/zYC0jWpMNDh/c2zKebmwLFUuqYeIPJpsVkdxM N22oukGPaW2euVrHE0i1NvbeGQgQJPjNMcLARQQchS/7usAkcC5ZzeZ/JYuuM6j65Tvh nF3DWXw8bfKYnJfgubUcwOuOzYA16br1gAm+1Grq427GnI3mJjJbDva9hvehHnQPlwg+ npo2nGkf834Jz3PiWI5qbnqctJw6IMpfnLhPleRtRg+0Q7fqXjqxLC9ClORKJJhQ1axa YUpQIe9txZmhYmuLjoh6P7u1rxtBIFv5KZxQTk0PVnTxWdPnmFHquwwUc2ockAx8ZxJd MzHw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1743195765; x=1743800565; 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=rerGx2TveORsLjDrW3hkWd+yAs+YmYyP0wNHZuEm2gw=; b=QhVe5tN0GMGHzISjD29JNKS3X49rMvjmHk7nTCODhEdiiD/8toJvPRqC7a4Rw9Ihp0 HqHvv75LkN9zTbtNGA2rRICpU4JJDjsMvUE3KqBQamx9YGiSKVYJxw+qXE4wo12Cc0qB +yiI2P4/rWtNd1t6eNDe4hHqpdfAQALF0U9C5i3LpU1Mx5TiFUoi6joRiSn5BZnn0WIF 4djC5Nm7g44Q7nCaoMHH4nWPEr8/i5Lx9YWsbM39UPDEgcdqk31SQxPKgUl0/wZwpjMR CiNrgdd+w8RkvVK5ytiIXxAaL71lZH7Qy2oGd6p8syHqyWA3KEpTnwDdIwiAa2/0rDE9 18mw== X-Forwarded-Encrypted: i=1; AJvYcCXCqiJ4+VDFr51H4Lu/KKNxmcLCwKNvFlfUfFwZdVRfJY7aDa/w/GtlKN+7nvgJM46xawVSd4yLg3o=@vger.kernel.org X-Gm-Message-State: AOJu0Yzd+yAQyLc3TtRxNfXhljThzxZug+FWp+Movqup7G6qwsdchPHl at6kUm4nGYeWprtu+6rtV2EYqZN7jkt7zM9sZEDAbC9rm7N1GHL1y1ENSH7HaHM= X-Gm-Gg: ASbGnctewUrrvPledY/tFRDc1zrCIweeudZinVgxtGjuXR40FjPhZ6igToOTnwmUVvs 23vLlRsRuLAqlXN0SRPYzOtfU1xmfhelsKZpvtXUQSOnBLYKjnDbuhxAhKXOttHF+udgQH28mMX 5SSATnFgRNNx2k2oDmV2y+SBAxrV1+d1p+wtSJDrGk4YIRnGQiVLICF4cOh45bswWsVNPmf0Xcq leqBRA4EGEhou+Ln/d+u+wTE/h4BKAzc7V7iXhKpfJaLnCuN0mVF+duB9/3Vbx8ZzU8L8U0a0nP m4SSz1/MuXJeflowGy+3xkZKLDCvcPjMhNmxCKSyw8yQnGpwJ53C5EvdIl5OB29IGa8XL4YDZJ1 HDMp4t5xwC3b2NlZREQ== X-Google-Smtp-Source: AGHT+IEkrPw2Xf+zBd0lVIv6FoNOsOZlQH+aK8mKUSksTkEV25RH9WtQ+nDLN/BB4g7AYZH94fGGSA== X-Received: by 2002:a05:6e02:152e:b0:3d2:6768:c4fa with SMTP id e9e14a558f8ab-3d5e09fdbf6mr10526775ab.21.1743195764543; Fri, 28 Mar 2025 14:02:44 -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 e9e14a558f8ab-3d5d5a74286sm6769405ab.39.2025.03.28.14.02.43 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 28 Mar 2025 14:02:44 -0700 (PDT) From: Alex Elder To: p.zabel@pengutronix.de, mturquette@baylibre.com, sboyd@kernel.org, dlan@gentoo.org Cc: robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, heylenay@4d2.org, guodong@riscstar.com, paul.walmsley@sifive.com, palmer@dabbelt.com, aou@eecs.berkeley.edu, spacemit@lists.linux.dev, devicetree@vger.kernel.org, linux-clk@vger.kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2 5/7] clk: spacemit: make clocks optional Date: Fri, 28 Mar 2025 16:02:30 -0500 Message-ID: <20250328210233.1077035-6-elder@riscstar.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20250328210233.1077035-1-elder@riscstar.com> References: <20250328210233.1077035-1-elder@riscstar.com> Precedence: bulk X-Mailing-List: linux-clk@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 There are some syscon devices that support both clocks and resets, but for now only their reset functionality is required. Make defining clocks optional for a SpacemiT CCU, though at least one clock or at least one reset controller must be defined. Signed-off-by: Alex Elder --- v2: - Comment explains constraints on match data drivers/clk/spacemit/ccu-k1.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/drivers/clk/spacemit/ccu-k1.c b/drivers/clk/spacemit/ccu-k1.c index f837d2c2f31fc..6885fea81f6f3 100644 --- a/drivers/clk/spacemit/ccu-k1.c +++ b/drivers/clk/spacemit/ccu-k1.c @@ -1821,6 +1821,10 @@ static int spacemit_ccu_register(struct device *dev, const struct spacemit_ccu_clk *clk; int i, ret, max_id = 0; + /* Clocks are optional */ + if (!clks) + return 0; + for (clk = clks; clk->hw; clk++) max_id = max(max_id, clk->id); @@ -1926,7 +1930,7 @@ static int k1_ccu_probe(struct platform_device *pdev) return 0; } -/* The match data is required to be non-null, and have a non-null clk pointer */ +/* The match data is required, and its clk or reset_data field must not be null */ static const struct of_device_id of_k1_ccu_match[] = { { .compatible = "spacemit,k1-pll",