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[46.91.239.63]) by smtp.gmail.com with ESMTPSA id d10sm4138463wrw.64.2020.01.08.03.59.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 08 Jan 2020 03:59:50 -0800 (PST) Date: Wed, 8 Jan 2020 12:59:49 +0100 From: Thierry Reding To: Stephen Warren Subject: Re: [PATCH V3 1/4] clk: tegra: mark fuse clock as critical Message-ID: <20200108115949.GA1993114@ulmo> References: <20191003205033.98381-1-swarren@wwwdotorg.org> MIME-Version: 1.0 In-Reply-To: <20191003205033.98381-1-swarren@wwwdotorg.org> User-Agent: Mutt/1.13.1 (2019-12-14) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200108_035955_164481_EFFC1C6D X-CRM114-Status: GOOD ( 13.60 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Prashant Gaikwad , Stephen Boyd , Peter De Schrijver , linux-clk@vger.kernel.org, Jonathan Hunter , linux-tegra@vger.kernel.org, Michael Turquette , linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============8777011363908664921==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============8777011363908664921== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="fdj2RfSjLxBAspz7" Content-Disposition: inline --fdj2RfSjLxBAspz7 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Oct 03, 2019 at 02:50:30PM -0600, Stephen Warren wrote: > From: Stephen Warren >=20 > For a little over a year, U-Boot on Tegra124 has configured the flow > controller to perform automatic RAM re-repair on off->on power transitions > of the CPU rail1]. This is mandatory for correct operation of Tegra124. > However, RAM re-repair relies on certain clocks, which the kernel must > enable and leave running. The fuse clock is one of those clocks. Mark this > clock as critical so that LP1 power mode (system suspend) operates > correctly. >=20 > [1] 3cc7942a4ae5 ARM: tegra: implement RAM repair >=20 > Reported-by: Jonathan Hunter > Cc: stable@vger.kernel.org > Signed-off-by: Stephen Warren > --- > v3: Added comment to the clock table entry indicating why the clock is > critical. > v2: Set CRITICAL flag on the clock, rather than enabling it in > tegra124_init_table[]. > --- > drivers/clk/tegra/clk-tegra-periph.c | 6 +++++- > 1 file changed, 5 insertions(+), 1 deletion(-) Applied to for-5.6/clk, thanks. 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