From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-lf1-f47.google.com (mail-lf1-f47.google.com [209.85.167.47]) (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 86A6332BF49; Tue, 2 Sep 2025 16:51:25 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.167.47 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756831887; cv=none; b=V1S1hu5i/Q9DGzdwprS0I3fjvNAOGPYx7R7CsO05mEN2w8ErjVvz4HtCYO8cxaYK0B+9E8NubtAZLPKSjt9iVMDKeX5+/IQJNUxOUkLjxylX4vZqn9q6iUGZYiM6Tc12ZN1FSUuUu08smrdskICZBcUuXB33dOTMuGXDn6tZtMU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756831887; c=relaxed/simple; bh=lIbE/1Aoqm4Jo61r+hMyagD0H71z3BwYFHkhUMeX9zQ=; h=MIME-Version:References:In-Reply-To:From:Date:Message-ID:Subject: To:Cc:Content-Type; b=tWewmGiZoVi4M9gN+87wBMskL9NJvlp2S2xAgIWJ99O2iS2MmEBboBz281kXQrPvjrK+w1Qm5atkECA6TpEbBYIplxo4/QX/GBRvA6jE9yw+GVKU9YyZle2o4xNwOUnAXurytuIUvLKgbPwsdThdobxJrOUJtYpz1MA8niMXel4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=J94iLqyw; arc=none smtp.client-ip=209.85.167.47 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com 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="J94iLqyw" Received: by mail-lf1-f47.google.com with SMTP id 2adb3069b0e04-55f78e3cdf9so3196563e87.1; Tue, 02 Sep 2025 09:51:25 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20230601; t=1756831884; x=1757436684; darn=vger.kernel.org; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:from:to:cc:subject:date :message-id:reply-to; bh=lIbE/1Aoqm4Jo61r+hMyagD0H71z3BwYFHkhUMeX9zQ=; b=J94iLqyw4Y9xEGaAYce2nV2xlgusHZkx3vXA+gWWWEFukU2iVPAffTfEsX+a9Gohvp Qm/+aOHNEQgqJEqnZyyQwHswH5ZCqGEjtjUZKjKJ9Zw5AUNcXKsPNW14DVCD2aAaFdkr K+tvWRCFr+ROgw9u4BhY2v0FRZRN/cn+n20c+CMOltfhGI6obIayE3JXR400KngOFGQS OkGXWhEkOuB+u32JXdpT38cgrpbTLDCmzrXB6jQejYfqQiMbonGw8R8DHVKaFFg6TLUp GJP+yymOel3pDRcez8bnBEyhtLtxPBPtjtVj4hd+fIb/pDJK8FyL306zb6nFbMhr79m9 bQKQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1756831884; x=1757436684; h=content-transfer-encoding:cc:to:subject:message-id:date:from :in-reply-to:references:mime-version:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=lIbE/1Aoqm4Jo61r+hMyagD0H71z3BwYFHkhUMeX9zQ=; b=rsZpnUSRNTe8Y4SB7TdhHqoA/HbTpKGnoTBDwoy0lyGDHk5kUe12caJZITmMq07XWc xa0WnWFmjCfec4e0MttPUs9XJWR6CpT7eEElrwCfHD+iyKpy6jXt5s5NUu/jfOvnROr/ n1ekf7RQpi2710Bv+I6Dx47dAkUW1CyyvabA/VEN2p1g2ZGC9GAFN+Hm2Nxmf01mE14B X2VnHgApj0ysYKdwVrg39AXHAWNnL2EGNKrFZypw9MZUTEOkDFcWTv6mMxStb5pYPiu8 iaSk65bWhvdc9BfJ43D1vLQ2qMK23gOUOgUtOJ0OdrN5G4pEDl5mjWK16mdmx/Hynhl4 V3jA== X-Forwarded-Encrypted: i=1; AJvYcCV1l67AkcN8T1D7qtyC1T8tKkBgiX7qwS3vIYU2ut069kfQFzDhfXf1Bz6dAVe2uAz1OaZ8BeBkMDt+@vger.kernel.org, AJvYcCV7o3GvJkhOArEqfXduCVEdQB5pvSEmCcnGdAHN2BUJL8eY9ArD9CTRg9lqxRW36peahp/a4gQZQWvSrQo=@vger.kernel.org, AJvYcCWYQOMSmiH/Yv60T6NsWj1c5maZ9fPR0JI4odxV3ZY5e/muOcSmOC9vNruWWGLmTpoH2tzdxYR2pZiJ8IAR@vger.kernel.org, AJvYcCXt1meYzWYxfW8K6sDzV13FPyQvvIXAphyLoUog2pJb0E9LK3U1V83jrqbr0+5d8hSqCJmAvcCdCFM=@vger.kernel.org X-Gm-Message-State: AOJu0YyU+RF5QNAypOGrouilOVevSUH/Yze/zy4rkKpgMVo8JHu7eqUt z9S8eF0PfO/rGQXAnFzXKk6lUMA/LTeAeRJmP1gJUcKwe5ZRsow1C26ZwUMveIPtPC16v1pNhpx vSHFThnAxXSvnk/zh3GxsKh1tbWkkeQU= X-Gm-Gg: ASbGncuaaT/AeTqEsaQ3Mc7yIBH+mg98TjIZTsmGEBq30MrVQ7gJK+vb0t8PyjKVQEj LFo9ZNydQrto7wliim7gbBFZsVd30fnaBg+PE7nVnQT8LS4VsNMNcNCQxNPHUIMKKuCrBtDCSCh DLUn17VAJnSpaONq/fyp6A9haZxlH++BrfG54DbcRFVMsauA5yiQzyfKo+dUZWTcHRbNMax4riX EVYrH8= X-Google-Smtp-Source: AGHT+IEChupoSD+9y1BXRKDMPiEUXXbCpO5UGzRaQ31kMw0aqronmTkKMHnTV+chIoZjNTqShh3rv+672NAMniN+Xf8= X-Received: by 2002:a05:6512:448e:b0:55f:645a:7146 with SMTP id 2adb3069b0e04-55f70968d9dmr3182922e87.46.1756831883361; Tue, 02 Sep 2025 09:51:23 -0700 (PDT) Precedence: bulk X-Mailing-List: linux-tegra@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 References: <20250831-tegra186-icc-v1-0-607ddc53b507@gmail.com> <20250902-glittering-toucan-of-feminism-95fd9f@kuoka> In-Reply-To: <20250902-glittering-toucan-of-feminism-95fd9f@kuoka> From: Aaron Kling Date: Tue, 2 Sep 2025 11:51:11 -0500 X-Gm-Features: Ac12FXwYWaxQZ7C2fCm_0oyX8iaPoPZ0amPC4H_SBlrNsaYfoKZf6cjuvVA16aA Message-ID: Subject: Re: [PATCH 0/8] Support dynamic EMC frequency scaling on Tegra186/Tegra194 To: Krzysztof Kozlowski Cc: Rob Herring , Conor Dooley , Thierry Reding , Jonathan Hunter , "Rafael J. Wysocki" , Viresh Kumar , Krzysztof Kozlowski , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org, linux-pm@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable On Tue, Sep 2, 2025 at 3:23=E2=80=AFAM Krzysztof Kozlowski wrote: > > On Sun, Aug 31, 2025 at 10:33:48PM -0500, Aaron Kling wrote: > > This series borrows the concept used on Tegra234 to scale EMC based on > > CPU frequency and applies it to Tegra186 and Tegra194. Except that the > > bpmp on those archs does not support bandwidth manager, so the scaling > > iteself is handled similar to how Tegra124 currently works. > > > > Three different subsystems and no single explanation of dependencies and > how this can be merged. The only cross-subsystem hard dependency is that patches 5 and 6 need patches 1 and 2 respectively. Patch 5 logically needs patch 3 to operate as expected, but there should not be compile compile or probe failures if those are out of order. How would you expect this to be presented in a cover letter? Aaron