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[2003:e4:1f12:c800:f22f:74ff:fe1f:3a53]) by smtp.gmail.com with ESMTPSA id m21-20020a195215000000b0048ad4c718f3sm422620lfb.30.2022.08.26.09.03.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 26 Aug 2022 09:03:10 -0700 (PDT) Date: Fri, 26 Aug 2022 18:03:07 +0200 From: Thierry Reding To: Petlozu Pravareshwar Cc: Jonathan Hunter , "p.zabel@pengutronix.de" , "dmitry.osipenko@collabora.com" , "ulf.hansson@linaro.org" , "Kartik ." , "cai.huoqing@linux.dev" , Sandipan Patra , "linux-tegra@vger.kernel.org" , "linux-kernel@vger.kernel.org" Subject: Re: [PATCH] soc/tegra: pmc: Print reset info during probe Message-ID: References: <20220817184456.1184459-1-petlozup@nvidia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="IwTi6ziXccuE4c+s" Content-Disposition: inline In-Reply-To: User-Agent: Mutt/2.2.7 (2022-08-07) X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,FREEMAIL_FROM, RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --IwTi6ziXccuE4c+s Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, Aug 24, 2022 at 07:39:46PM +0000, Petlozu Pravareshwar wrote: > >=20 > > On Wed, Aug 17, 2022 at 06:44:56PM +0000, Petlozu Pravareshwar wrote: > > > During PMC probe, print previous reset related info such as reset > > > reason and reset level. > > > > > > Signed-off-by: Petlozu Pravareshwar > > > --- > > > drivers/soc/tegra/pmc.c | 27 +++++++++++++++++++++++++++ > > > 1 file changed, 27 insertions(+) > >=20 > > We already expose this information in sysfs, why do we need to print it > > during boot? > >=20 > > Thierry > There are some tests which would parse the boot log for this information. > But I agree, since we are already providing this information through sysf= s, > there is no need to print it during boot. It'd be a good idea to transition the tests to try and obtain this information through sysfs first and if that fails they could fall back to using the boot log. Although to be honest, I think we've supported this sysfs interface for long enough that we probably don't have to worry about a fallback. 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