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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id t13sm801792ooo.1.2020.04.29.14.36.59 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 29 Apr 2020 14:37:00 -0700 (PDT) Received: (nullmailer pid 9089 invoked by uid 1000); Wed, 29 Apr 2020 21:36:59 -0000 Date: Wed, 29 Apr 2020 16:36:59 -0500 From: Rob Herring To: Michael Tretter Subject: Re: [PATCH v3 4/6] dt-bindings: soc: xlnx: extract xlnx, vcu-settings to separate binding Message-ID: <20200429213659.GA9051@bogus> References: <20200417070526.7178-1-m.tretter@pengutronix.de> <20200417070526.7178-5-m.tretter@pengutronix.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200417070526.7178-5-m.tretter@pengutronix.de> User-Agent: Mutt/1.10.1 (2018-07-13) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200429_143701_702612_A0621F26 X-CRM114-Status: GOOD ( 16.64 ) 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: devicetree@vger.kernel.org, Dhaval Shah , Michal Simek , Michael Tretter , kernel@pengutronix.de, Rohit Visavalia , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, 17 Apr 2020 09:05:24 +0200, Michael Tretter wrote: > The xlnx,vcu binding comprises two adjacent register banks: > > The first register bank ("vcu_slcr") contains registers for setting the > clocks of the vcu and controlling the performance monitors. The second > bank ("logicoreip") contains the configuration settings of the video codec > unit, which are set before synthesizing the bitstream. > > Drivers that drive the actual video codec unit need to to read the > registers from the logicoreip register bank for configuring the vcu > firmware. > > As logicoreip is a too generic name for this register bank, use > "vcu-settings" as a binding name, because the register bank basically > provides the configuration settings of the VCU. > > Therefore, add the vcu-settings binding to provide a syscon interface > for other drivers to read these registers. > > The alternative would have been to merge the two register banks of the > xlnx,vcu binding into one register bank and make xlnx,vcu provide a > syscon interface, but that would lead to more incompatibility than > making second register bank of xlnx,vcu optional. > > Signed-off-by: Michael Tretter > --- > Changelog: > > v2 -> v3: > - none > > v1 -> v2: > - drop custom select for syscon > --- > .../soc/xilinx/xlnx,vcu-settings.yaml | 34 +++++++++++++++++++ > .../bindings/soc/xilinx/xlnx,vcu.txt | 9 ++--- > 2 files changed, 36 insertions(+), 7 deletions(-) > create mode 100644 Documentation/devicetree/bindings/soc/xilinx/xlnx,vcu-settings.yaml > Reviewed-by: Rob Herring _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel