linux-kernel - Re: [PATCH v10 00/19] Introduce memory interconnect for NVIDIA Tegra SoCs

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Message-ID: <20201123061734.mpmkdxzullrh52o7@vireshk-i7>
Date:   Mon, 23 Nov 2020 11:47:34 +0530
From:   Viresh Kumar <viresh.kumar@...aro.org>
To:     Dmitry Osipenko <digetx@...il.com>
Cc:     Thierry Reding <thierry.reding@...il.com>,
        Jonathan Hunter <jonathanh@...dia.com>,
        Georgi Djakov <georgi.djakov@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Peter De Schrijver <pdeschrijver@...dia.com>,
        MyungJoo Ham <myungjoo.ham@...sung.com>,
        Kyungmin Park <kyungmin.park@...sung.com>,
        Chanwoo Choi <cw00.choi@...sung.com>,
        Mikko Perttunen <cyndis@...si.fi>,
        Viresh Kumar <vireshk@...nel.org>,
        Peter Geis <pgwipeout@...il.com>,
        Nicolas Chauvet <kwizart@...il.com>,
        Krzysztof Kozlowski <krzk@...nel.org>,
        linux-tegra@...r.kernel.org, linux-pm@...r.kernel.org,
        linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org
Subject: Re: [PATCH v10 00/19] Introduce memory interconnect for NVIDIA Tegra
 SoCs

On 23-11-20, 03:27, Dmitry Osipenko wrote:
> This series brings initial support for memory interconnect to Tegra20,
> Tegra30 and Tegra124 SoCs.
> 
> For the starter only display controllers and devfreq devices are getting
> interconnect API support, others could be supported later on. The display
> controllers have the biggest demand for interconnect API right now because
> dynamic memory frequency scaling can't be done safely without taking into
> account bandwidth requirement from the displays. In particular this series
> fixes distorted display output on T30 Ouya and T124 TK1 devices.
> 
> Changelog:
> 
> v10 - In a longer run it will be much nicer if we could support EMC
>       hardware versioning on Tegra20 and it's not late to support it now.
>       Hence I added these new patches:
> 
>         dt-bindings: memory: tegra20: emc: Document opp-supported-hw property
>         memory: tegra20: Support hardware versioning and clean up OPP table initialization
> 
>     - Removed error message from tegra30-devfreq driver about missing OPP
>       properties in a device-tree because EMC driver already prints that
>       message and it uses OPP API error code instead of checking DT directly,
>       which is a more correct way of doing that.

Looks good to me (from OPP APIs usage perspective). Thanks for
continuing with this and fixing all the issues Dmitry.

-- 
viresh