From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pl1-f170.google.com (mail-pl1-f170.google.com [209.85.214.170]) (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 680D42FB09F; Fri, 5 Sep 2025 15:00:02 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.214.170 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757084403; cv=none; b=NuUNxbfMU6LJk/GnjKvW3f+MQK6aIJdWRIcZTOJ7bS4gkbMBAJXQxdo0jLvFSsmZ+1dG77PpqP/lYLaIbcYe1rOw1TmuEAfrGl94cxqhJwtOFU4SezkoHKIfkRPEDeS9LLiJgVrPx5BVsW9vLwBhE9MQiXPsGrQXo1Oi+/Dkvrg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1757084403; c=relaxed/simple; bh=ALhbWpBuIHESZ3w6gZ/J34pjJGe0uGkxAAoVB4VKwp8=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=uYpdIAG1oIZefZKNIHS3tu/wIK1bUGbhxa6rcXhpNR2bIT/G+gdxk+SIt+to0+9mYKLiXRZbO9J74EqKka6e9EdrzzdjQDUXoN08zY5j48cYq99+C8AX7V6+aIaaD+eZqfO+wHuduC14v6qyBQ2ko8Akumzdpq+gqsNtGFwp7/g= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=Ofn9I9iQ; arc=none smtp.client-ip=209.85.214.170 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=roeck-us.net 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="Ofn9I9iQ" Received: by mail-pl1-f170.google.com with SMTP id d9443c01a7336-24c863e852aso20343835ad.1; Fri, 05 Sep 2025 08:00:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1757084402; x=1757689202; darn=vger.kernel.org; h=content-transfer-encoding:in-reply-to:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:sender:from:to:cc:subject:date:message-id:reply-to; bh=BM3As/mXgJWAMTQFyUrVqvwBh5qWHLokM1O/8LYhcBk=; b=Ofn9I9iQzk5qPViU8AkPjJLb7B7cyBIOn6o1JKzU7efAFi2ZDxEekFNeroA8fqROUB g8eKBXoXzReEvPZp2e0CU8xnqvfTDfJQ8E0FN7dyNgzzi3hrQuJfjyhPTkx36rIscOhf f6JDm2tf1KuuUDClPkDm6hekNfwbST38gCEboD2s1QR9Zo1AZ5FstmWCuyzXYyVBUNle 8Cy3596PmEGQ5bLmprowsScxuYAFR8008SJkSBLWdJiX48Kwj9GEXkm2YEUpk4VpXghV 30FzyJFi89KyW8JxzMjL+RBWui+mCpT/1Fa9UlCF959wY41H7JK5VrBEfHHJ0kgAHM3y C9lQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1757084402; x=1757689202; h=content-transfer-encoding:in-reply-to:autocrypt:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:sender:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to; bh=BM3As/mXgJWAMTQFyUrVqvwBh5qWHLokM1O/8LYhcBk=; b=rQrzen107ng6pEJgwwl44WCzJpLjIRCiBCG471VTVEcS39bt9swOzFEsYzjmw0p/0F nULEpJ7tnI9pBNcfHv7IRm5ssAbn3w5/N3NdvoKvM+LYuygDnqdt+G8bX23NmM/oy7vE +Q1hR+1VbvXcTj0D553SJaG4WXRZ10PfmPUFIsmZJW7xf4qt/pAWQ3DpK7Fag140NCX2 R58+T1pip/I/fUnpGL50c24E6imp5F15h3gzkrNSNXhNiScChrstlUNXMe5HgMwyJIie Bj+tC44CKWCFw2gPFi/e8Bg1B6R7JDFkLBbPN9qYFW9UkjG2nOgGwbwb7/y9DHeyLC0l BQyQ== X-Forwarded-Encrypted: i=1; AJvYcCUAcWnYZIaNT3qF11jRoYRBCRtd+IeBGinKzB/SRjAtDkD35VXXE82bRnbqFpFkftDFg+hzuuoHs7Sf@vger.kernel.org, AJvYcCUywUkvEVjdrQAfwdFlJoiwLsLwDdft0njyLwI/IXb9txzFQ3NEhWHqMeWkc7OzctqrAui5NwQ5e4TBGT1Bbh8TBbo=@vger.kernel.org, AJvYcCW4Zcob0xfVPWGLruCvdapdq2MCGlqswWSADluowAlvUtgWRKJ3VYQpj2TvLVZfRzynigSXW+Dhz0BwvLgU@vger.kernel.org X-Gm-Message-State: AOJu0YyCpmJuDPRrYJP135xLoHZxfBMOmSPRZvFFOIf2ni3dbAYRql8E 9RYjQx04kfwy8AD+NaI/dLszzakUL/3QE2yZ27Y3CB+i8zdT0yjif6cS X-Gm-Gg: ASbGncvj6sivGB2xsWevJi/zbHJKgmg8OC6RdpKTyq9IFmjHK1SIjkWdkGuju2DoM5D ykBJUVcHJDPaBy/px+mBxVq7vfuMeoaUMz96wBcGuoXCygN5MGCGxpdDA+IcSWbDehG5UxaMqXK CkWLgHTAyx33Vrcl64JSv+PcrDwGBfIniU243YEkkdjeaepDhyvZ5IWT6/j4Rk153v3qAGOaUx/ CDzuJYjDUBMBkSVR3UNAoMoUnBYbvH+xQrvGdnCKYbj3SJUKAqkdWWT6Z0Ka0O94HZ7LOaYEzwq BJfgfyhpZZi/KyVlPKg0qbhw9WZoH9a717jQVlwBQ67WeMxxtENQhwYeqM2txbNpjfyKQHPhMJv HyONil80ZCB7M+vKfVjW1nYlOfFJNvH6fhSIR1mMhpjs2/2HbO7XXlrtTPOf2ZB8zd/uyUkgVmR M7ccUpDg== X-Google-Smtp-Source: AGHT+IHuVBtMRqO9E/uDVUcKzPUIj51uxl5WcTxllKIkah/7JqHcVhk+jjGOeTjkxr4voewoXYTYjA== X-Received: by 2002:a17:903:2b05:b0:24b:e55:334 with SMTP id d9443c01a7336-24b0e550925mr175545175ad.8.1757084401493; Fri, 05 Sep 2025 08:00:01 -0700 (PDT) Received: from ?IPV6:2600:1700:e321:62f0:da43:aeff:fecc:bfd5? ([2600:1700:e321:62f0:da43:aeff:fecc:bfd5]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-24c9c2b12f9sm70866975ad.101.2025.09.05.08.00.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 05 Sep 2025 08:00:00 -0700 (PDT) Sender: Guenter Roeck Message-ID: Date: Fri, 5 Sep 2025 07:59:59 -0700 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v3 3/6] watchdog: rzv2h: Make "oscclk" and reset controller optional To: Prabhakar , Wim Van Sebroeck , Geert Uytterhoeven , Wolfram Sang , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Philipp Zabel , Magnus Damm Cc: linux-watchdog@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-renesas-soc@vger.kernel.org, Biju Das , Fabrizio Castro , Lad Prabhakar References: <20250804195723.3963524-1-prabhakar.mahadev-lad.rj@bp.renesas.com> <20250804195723.3963524-4-prabhakar.mahadev-lad.rj@bp.renesas.com> Content-Language: en-US From: Guenter Roeck Autocrypt: addr=linux@roeck-us.net; keydata= xsFNBE6H1WcBEACu6jIcw5kZ5dGeJ7E7B2uweQR/4FGxH10/H1O1+ApmcQ9i87XdZQiB9cpN RYHA7RCEK2dh6dDccykQk3bC90xXMPg+O3R+C/SkwcnUak1UZaeK/SwQbq/t0tkMzYDRxfJ7 nyFiKxUehbNF3r9qlJgPqONwX5vJy4/GvDHdddSCxV41P/ejsZ8PykxyJs98UWhF54tGRWFl 7i1xvaDB9lN5WTLRKSO7wICuLiSz5WZHXMkyF4d+/O5ll7yz/o/JxK5vO/sduYDIlFTvBZDh gzaEtNf5tQjsjG4io8E0Yq0ViobLkS2RTNZT8ICq/Jmvl0SpbHRvYwa2DhNsK0YjHFQBB0FX IdhdUEzNefcNcYvqigJpdICoP2e4yJSyflHFO4dr0OrdnGLe1Zi/8Xo/2+M1dSSEt196rXaC kwu2KgIgmkRBb3cp2vIBBIIowU8W3qC1+w+RdMUrZxKGWJ3juwcgveJlzMpMZNyM1jobSXZ0 VHGMNJ3MwXlrEFPXaYJgibcg6brM6wGfX/LBvc/haWw4yO24lT5eitm4UBdIy9pKkKmHHh7s jfZJkB5fWKVdoCv/omy6UyH6ykLOPFugl+hVL2Prf8xrXuZe1CMS7ID9Lc8FaL1ROIN/W8Vk BIsJMaWOhks//7d92Uf3EArDlDShwR2+D+AMon8NULuLBHiEUQARAQABzTJHdWVudGVyIFJv ZWNrIChMaW51eCBhY2NvdW50KSA8bGludXhAcm9lY2stdXMubmV0PsLBgQQTAQIAKwIbAwYL CQgHAwIGFQgCCQoLBBYCAwECHgECF4ACGQEFAmgrMyQFCSbODQkACgkQyx8mb86fmYGcWRAA oRwrk7V8fULqnGGpBIjp7pvR187Yzx+lhMGUHuM5H56TFEqeVwCMLWB2x1YRolYbY4MEFlQg VUFcfeW0OknSr1s6wtrtQm0gdkolM8OcCL9ptTHOg1mmXa4YpW8QJiL0AVtbpE9BroeWGl9v 2TGILPm9mVp+GmMQgkNeCS7Jonq5f5pDUGumAMguWzMFEg+Imt9wr2YA7aGen7KPSqJeQPpj onPKhu7O/KJKkuC50ylxizHzmGx+IUSmOZxN950pZUFvVZH9CwhAAl+NYUtcF5ry/uSYG2U7 DCvpzqOryJRemKN63qt1bjF6cltsXwxjKOw6CvdjJYA3n6xCWLuJ6yk6CAy1Ukh545NhgBAs rGGVkl6TUBi0ixL3EF3RWLa9IMDcHN32r7OBhw6vbul8HqyTFZWY2ksTvlTl+qG3zV6AJuzT WdXmbcKN+TdhO5XlxVlbZoCm7ViBj1+PvIFQZCnLAhqSd/DJlhaq8fFXx1dCUPgQDcD+wo65 qulV/NijfU8bzFfEPgYP/3LP+BSAyFs33y/mdP8kbMxSCjnLEhimQMrSSo/To1Gxp5C97fw5 3m1CaMILGKCmfI1B8iA8zd8ib7t1Rg0qCwcAnvsM36SkrID32GfFbv873bNskJCHAISK3Xkz qo7IYZmjk/IJGbsiGzxUhvicwkgKE9r7a1rOwU0ETofVZwEQALlLbQeBDTDbwQYrj0gbx3bq 7kpKABxN2MqeuqGr02DpS9883d/t7ontxasXoEz2GTioevvRmllJlPQERVxM8gQoNg22twF7 pB/zsrIjxkE9heE4wYfN1AyzT+AxgYN6f8hVQ7Nrc9XgZZe+8IkuW/Nf64KzNJXnSH4u6nJM J2+Dt274YoFcXR1nG76Q259mKwzbCukKbd6piL+VsT/qBrLhZe9Ivbjq5WMdkQKnP7gYKCAi pNVJC4enWfivZsYupMd9qn7Uv/oCZDYoBTdMSBUblaLMwlcjnPpOYK5rfHvC4opxl+P/Vzyz 6WC2TLkPtKvYvXmdsI6rnEI4Uucg0Au/Ulg7aqqKhzGPIbVaL+U0Wk82nz6hz+WP2ggTrY1w ZlPlRt8WM9w6WfLf2j+PuGklj37m+KvaOEfLsF1v464dSpy1tQVHhhp8LFTxh/6RWkRIR2uF I4v3Xu/k5D0LhaZHpQ4C+xKsQxpTGuYh2tnRaRL14YMW1dlI3HfeB2gj7Yc8XdHh9vkpPyuT nY/ZsFbnvBtiw7GchKKri2gDhRb2QNNDyBnQn5mRFw7CyuFclAksOdV/sdpQnYlYcRQWOUGY HhQ5eqTRZjm9z+qQe/T0HQpmiPTqQcIaG/edgKVTUjITfA7AJMKLQHgp04Vylb+G6jocnQQX JqvvP09whbqrABEBAAHCwWUEGAECAA8CGwwFAmgrMyQFCSbODQkACgkQyx8mb86fmYHlgg/9 H5JeDmB4jsreE9Bn621wZk7NMzxy9STxiVKSh8Mq4pb+IDu1RU2iLyetCY1TiJlcxnE362kj njrfAdqyPteHM+LU59NtEbGwrfcXdQoh4XdMuPA5ADetPLma3YiRa3VsVkLwpnR7ilgwQw6u dycEaOxQ7LUXCs0JaGVVP25Z2hMkHBwx6BlW6EZLNgzGI2rswSZ7SKcsBd1IRHVf0miwIFYy j/UEfAFNW+tbtKPNn3xZTLs3quQN7GdYLh+J0XxITpBZaFOpwEKV+VS36pSLnNl0T5wm0E/y scPJ0OVY7ly5Vm1nnoH4licaU5Y1nSkFR/j2douI5P7Cj687WuNMC6CcFd6j72kRfxklOqXw zvy+2NEcXyziiLXp84130yxAKXfluax9sZhhrhKT6VrD45S6N3HxJpXQ/RY/EX35neH2/F7B RgSloce2+zWfpELyS1qRkCUTt1tlGV2p+y2BPfXzrHn2vxvbhEn1QpQ6t+85FKN8YEhJEygJ F0WaMvQMNrk9UAUziVcUkLU52NS9SXqpVg8vgrO0JKx97IXFPcNh0DWsSj/0Y8HO/RDkGXYn FDMj7fZSPKyPQPmEHg+W/KzxSSfdgWIHF2QaQ0b2q1wOSec4Rti52ohmNSY+KNIW/zODhugJ np3900V20aS7eD9K8GTU0TGC1pyz6IVJwIE= In-Reply-To: <20250804195723.3963524-4-prabhakar.mahadev-lad.rj@bp.renesas.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 8/4/25 12:57, Prabhakar wrote: > From: Lad Prabhakar > > Update the rzv2h_wdt driver to make the "oscclk" clock and reset > controller optional. > > Use devm_clk_get_optional_prepared() to obtain the "oscclk" clock, > allowing the driver to work on platforms that do not provide this clock, > such as the RZ/T2H SoC. > > Similarly, use devm_reset_control_get_optional_exclusive() to allow the > driver to function on platforms that lack a reset controller. > > These changes are preparatory steps for supporting the RZ/T2H SoC, which > does not provide an "oscclk" clock or a reset controller. > > Signed-off-by: Lad Prabhakar > Reviewed-by: Wolfram Sang Reviewed-by: Guenter Roeck