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[24.155.109.49]) by smtp.gmail.com with ESMTPSA id j5-v6sm1001357otc.54.2018.09.27.12.10.01 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Thu, 27 Sep 2018 12:10:01 -0700 (PDT) Date: Thu, 27 Sep 2018 14:10:00 -0500 From: Rob Herring To: Yogesh Gaur Cc: linux-mtd@lists.infradead.org, boris.brezillon@bootlin.com, marek.vasut@gmail.com, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, mark.rutland@arm.com, shawnguo@kernel.org, linux-arm-kernel@lists.infradead.org, computersforpeace@gmail.com, frieder.schrempf@exceet.de, linux-kernel@vger.kernel.org Subject: Re: [PATCH v3 2/5] dt-bindings: spi: add binding file for NXP FlexSPI controller Message-ID: <20180927191000.GA18549@bogus> References: <1537525323-20730-1-git-send-email-yogeshnarayan.gaur@nxp.com> <1537525323-20730-3-git-send-email-yogeshnarayan.gaur@nxp.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1537525323-20730-3-git-send-email-yogeshnarayan.gaur@nxp.com> User-Agent: Mutt/1.9.4 (2018-02-28) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Sep 21, 2018 at 03:52:00PM +0530, Yogesh Gaur wrote: > Add binding file for NXP FlexSPI controller > > Signed-off-by: Yogesh Gaur > --- > Changes for v3: > - None > Changes for v2: > - Incorporated Rob review comments. > > .../devicetree/bindings/spi/spi-nxp-fspi.txt | 42 ++++++++++++++++++++++ > 1 file changed, 42 insertions(+) > create mode 100644 Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt > > diff --git a/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt b/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt > new file mode 100644 > index 0000000..94b5203 > --- /dev/null > +++ b/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt > @@ -0,0 +1,42 @@ > +* NXP Flex Serial Peripheral Interface (FSPI) > + > +Required properties: > + - compatible : Should be "nxp,lx2160a-fspi" > + - reg : First contains the register location and length, > + Second contains the memory mapping address and length > + - reg-names : Should contain the resource reg names: > + - fspi_base: configuration register address space > + - fspi_mmap: memory mapped address space > + - interrupts : Should contain the interrupt for the device > + > +Optional properties: > + - big-endian : See common-properties.txt. > + > +Required SPI slave node properties: > + - reg : There are two buses (A and B) with two chip selects each. > + This encodes to which bus and CS the flash is connected: > + - <0>: Bus A, CS 0 > + - <1>: Bus A, CS 1 > + - <2>: Bus B, CS 0 > + - <3>: Bus B, CS 1 > + > +Example showing the usage of two SPI NOR slave devices on bus A: > + > +fspi@0: flexspi@20c0000 { Use standard node names. spi@... > + compatible = "nxp,lx2160a-fspi"; > + reg = <0x0 0x20c0000 0x0 0x10000>, <0x0 0x20000000 0x0 0x10000000>; > + reg-names = "fspi_base", "fspi_mmap"; > + interrupts = <0 25 0x4>; /* Level high type */ > + clocks = <&clockgen 4 3>, <&clockgen 4 3>; > + clock-names = "fspi_en", "fspi"; > + > + flash@0: mt35xu512aba@0 { You've got the label and node name reversed. Drop the '@' in the label. That should be reserved for node names. > + reg = <0>; > + .... > + }; > + > + flash@1: mt35xu512aba@1 { > + reg = <1>; > + .... > + }; > +}; > -- > 2.7.4 >