From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from 013.lax.mailroute.net (013.lax.mailroute.net [199.89.1.16]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7A1CD2C237C; Fri, 6 Mar 2026 02:16:47 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=199.89.1.16 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772763408; cv=none; b=F2v0CLcKwQZVRlanEBj3KSKlV0YVKm0gk+DQpHPzf4ynIP/9yDgK9zTbJ2oi0xM2du1ucGvcR8nxgL6dxvRKlLYUOCeGJ0fNfWqRgQkYcsbmLzgytoEifxZgzdFGJaqynp6FZusb0BfhrUXBCzoPw8OFyjFiDNwYzH5xIgPluEg= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772763408; c=relaxed/simple; bh=TgGMYh2DP+ijYv+4mXIdHZZry/vv5D3g9hz3pz4gUUg=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=Nbnf4v4liHXeq3QfnAHs+GbGsMIGGXAtHhH8op1UqlZXMrG+pQALBpyJJ5QVJAO5KLtmelOPzi06wXLH1k999hiqG9sgw/YcIP8PvUQ7muR0UiHojMPlTHDukCotxFKGIrjTyA+A52f35i+rS9yiSN45M8SaeQYiMZFMH0qwCy8= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org; spf=pass smtp.mailfrom=acm.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b=Fmb6MmUO; arc=none smtp.client-ip=199.89.1.16 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=acm.org Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=acm.org Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=acm.org header.i=@acm.org header.b="Fmb6MmUO" Received: from localhost (localhost [127.0.0.1]) by 013.lax.mailroute.net (Postfix) with ESMTP id 4fRqlz0NRJzlh1TC; Fri, 6 Mar 2026 02:16:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=acm.org; h= content-transfer-encoding:content-type:content-type:in-reply-to :from:from:content-language:references:subject:subject :user-agent:mime-version:date:date:message-id:received:received; s=mr01; t=1772763403; x=1775355404; bh=TgGMYh2DP+ijYv+4mXIdHZZr y/vv5D3g9hz3pz4gUUg=; b=Fmb6MmUO9RTAb/zAArlRKoTXh9EVLjQQzSsAWOQX hslDxghfplk0YRi2ns3vbTRjmbfnlpQ0LTJ4v6vGFvOy4/3BTRybHKm6AKIOqltW RtXPOJIerQqy0HkY4hdpNGvXK1c41t20+3Hc9HHM1EA03h1Xgya7FPx9+qAY5Krb Ux/78eLp4OSGk14UMrsd3p8Y+VEY/NPhnJ8RQa9c/XmvXE2gcFBrXRTDwRQ+Hbh/ xzqDxnhzm3ixaVNOJ/sTzdMbTudP9sd/takMpHJRuXozGZiOdW+W4bcLykgRFMIE KirPeiOul0KqYwrY3r6+YlIcGWyony6nwL7/+qKDvOWN/g== X-Virus-Scanned: by MailRoute Received: from 013.lax.mailroute.net ([127.0.0.1]) by localhost (013.lax [127.0.0.1]) (mroute_mailscanner, port 10029) with LMTP id OMO8-5YPHm93; Fri, 6 Mar 2026 02:16:43 +0000 (UTC) Received: from [192.168.132.187] (unknown [12.150.89.26]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) (Authenticated sender: bvanassche@acm.org) by 013.lax.mailroute.net (Postfix) with ESMTPSA id 4fRqlr0VCrzlh1TF; Fri, 6 Mar 2026 02:16:39 +0000 (UTC) Message-ID: Date: Thu, 5 Mar 2026 20:16:38 -0600 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 1/2] ufs: core: Add quriks for VCC ramp-up delay To: ed.tsai@mediatek.com, Alim Akhtar , Avri Altman , "James E.J. Bottomley" , "Martin K. Petersen" , Matthias Brugger , AngeloGioacchino Del Regno Cc: linux-scsi@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mediatek@lists.infradead.org References: <20260305083610.2672344-1-ed.tsai@mediatek.com> <20260305083610.2672344-2-ed.tsai@mediatek.com> Content-Language: en-US From: Bart Van Assche In-Reply-To: <20260305083610.2672344-2-ed.tsai@mediatek.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit On 3/5/26 2:29 AM, ed.tsai@mediatek.com wrote: > On some platforms, the VCC regulator has a slow ramp-up time. Add a > delay after enabling VCC to ensure voltage has fully stabilized before > we enable the clocks. Reviewed-by: Bart Van Assche