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[217.229.22.169]) by smtp.gmail.com with ESMTPSA id g5sm213909wrr.57.2020.03.10.10.12.09 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 10 Mar 2020 10:12:09 -0700 (PDT) Date: Tue, 10 Mar 2020 18:12:08 +0100 From: Thierry Reding To: Dmitry Osipenko Subject: Re: [PATCH v5 4/8] dt-bindings: memory: tegra: Add external memory controller binding for Tegra210 Message-ID: <20200310171208.GE3079591@ulmo> References: <20200310152003.2945170-1-thierry.reding@gmail.com> <20200310152003.2945170-5-thierry.reding@gmail.com> <67295862-0898-87d1-ddb2-660713501bca@gmail.com> MIME-Version: 1.0 In-Reply-To: <67295862-0898-87d1-ddb2-660713501bca@gmail.com> 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-20200310_101212_460018_000D2E71 X-CRM114-Status: GOOD ( 15.14 ) 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: Mark Rutland , devicetree@vger.kernel.org, Stephen Boyd , Michael Turquette , Jon Hunter , Rob Herring , Joseph Lo , linux-tegra@vger.kernel.org, linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: multipart/mixed; boundary="===============5773204186567585796==" Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org --===============5773204186567585796== Content-Type: multipart/signed; micalg=pgp-sha256; protocol="application/pgp-signature"; boundary="KuLpqunXa7jZSBt+" Content-Disposition: inline --KuLpqunXa7jZSBt+ Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Mar 10, 2020 at 07:35:01PM +0300, Dmitry Osipenko wrote: > 10.03.2020 18:19, Thierry Reding =D0=BF=D0=B8=D1=88=D0=B5=D1=82: > > From: Joseph Lo > >=20 > > Add the binding document for the external memory controller (EMC) which > > communicates with external LPDDR4 devices. It includes the bindings of > > the EMC node and a sub-node of EMC table which under the reserved memory > > node. The EMC table contains the data of the rates that EMC supported. > >=20 > > Signed-off-by: Joseph Lo > > Signed-off-by: Thierry Reding > > --- > > Changes in v5: > > - convert to dt-schema >=20 > ... >=20 > > + memory-region: > > + $ref: /schemas/types.yaml#/definitions/phandle > > + description: > > + phandle to a reserved memory region describing the table of EMC > > + frequencies trained by the firmware >=20 > Shouldn't the table's format be documented? I'm not sure that's needed here. A proprietary bootloader creates this table and the kernel has a structure for it. Describing the exact layout in the device tree binding seems a bit excessive. 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