From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 A276C346FCB; Tue, 11 Nov 2025 11:16:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762859819; cv=none; b=oMtUYrlz2xqVwclDW8Fax3SyUyn+rrFvZ/7qZkEAWh+P2fEU35cW4XlgR3hZ9M0MXtDwYnz6ESA0AIM98e4ELaZKAL2s6MRVztgNM2TI+XrYRTm1zxAoQfdHr4hV9UU5wgBKpZe+8nUr6ZgBHpDwYXbZiUCmKlP7R7FQpbqmeoM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1762859819; c=relaxed/simple; bh=6GaXkqPrq2gZuZ0i7G8tPqJd3p8ZVkVq5GXwEApzHJk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=eLiAEUQ+sxDzhUGPbgoqQFqsvInr10bmTmadnaEmog0ECIG+82cc3xykEwVgzT984GCRA18P/fOPazAYjfCq1Jy2/Pm/whNzwzcS2TnMU9wqV87WCixy3GCLEUfIQU3F4QprdPBS3Y6gOvlZr6mHDSdNftuPBya0LUS3GV48V2k= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=m+kHAFqw; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="m+kHAFqw" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 59F5FC116B1; Tue, 11 Nov 2025 11:16:57 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1762859819; bh=6GaXkqPrq2gZuZ0i7G8tPqJd3p8ZVkVq5GXwEApzHJk=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=m+kHAFqwrLPohGYQLVCe3ybZXB4/IzDjklHStUvFB4kKT1/82fBi2P1LgYDY37XPS o0zr/G4t++pQgnX52oxJ1uOdM5xMrd5zJ1g11VQeSXPJc/WDW9mYt1IWB8cCdG9yY2 25YF4wMc1om7bQ8mFDrprszK9Cz2e/6PQre2MQZ7Fe3lmp5Koz0ZKwZ8Jb3RMalkVe m63RY6jdJXq2PIkvEOB2oHl+ovMcwqA7QuQiY5vINMigyXSXLKwdQFgd5lMpbpAdWB WWJHVFVxNtrfimEX5b5YGn6vFf0kqTlRDHDpKUyrYahXzpjoxxCgRAMpP5Pp0vym1h S7LZpQwEpGAkA== Message-ID: <99ca4992-5736-417d-854e-379542549bee@kernel.org> Date: Tue, 11 Nov 2025 12:16:55 +0100 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 v4 3/5] memory: tegra186-emc: Support non-bpmp icc scaling To: Jon Hunter , Aaron Kling Cc: Rob Herring , Conor Dooley , Thierry Reding , linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-tegra@vger.kernel.org References: <20251027-tegra186-icc-p2-v4-0-e4e4f57e2103@gmail.com> <20251027-tegra186-icc-p2-v4-3-e4e4f57e2103@gmail.com> <82c8dda8-6fcb-48f9-bdaa-f3d1431e41ae@nvidia.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 11/11/2025 12:13, Jon Hunter wrote: >>>>> + >>>>> if (tegra_bpmp_mrq_is_supported(emc->bpmp, MRQ_EMC_DVFS_LATENCY)) { >>>>> err = tegra186_emc_get_emc_dvfs_latency(emc); >>>>> if (err) >>>>> >>>> >>>> >>>> FYI, this patch is causing a boot regression on Tegra194 devices. I >>>> noticed that tegra194-p2972-0000 and tegra194-p3509-0000+p3668-0000 are >>>> no longer booting and bisect is pointing to this. I will have a closer >>>> look and try to see why this is. >>> >>> Interesting. Both were booting for me during my verification, though >>> my use case involves the dt changes that I don't believe have been >>> picked up yet. Thought I had explicitly verified without the dt >>> changes too, though. Since I was asked to do so on this or one of the >>> other similar series. I will try to check linux-next as-is soon. >> >> I just built next-20251110 using the standard arm64 defconfig and >> flashed the resulting Image and dtb's to p2972 and p3518 (p3509+p3668) >> and both booted to cli on a barebones busybox ramdisk. I do not see >> any errors from tegra-mc, and the only error I see from tegra186-emc >> is that it can't find the opp tables, which is expected without the dt >> changes, and is not fatal. > > Thanks for testing. Something is not right because our boards are > failing. So may be we are doing/testing something different. However, > this should not break. So there is a problem here. Did you meant: "So there is NO problem here"? I kept these for 10 days in linux-next and yesterday sent them in pull request. If some patches are needed on top, they can still fit coming merge window if sent soon. Best regards, Krzysztof