From mboxrd@z Thu Jan 1 00:00:00 1970 From: Yogesh Narayan Gaur Subject: [PATCH v7 2/5] dt-bindings: spi: add binding file for NXP FlexSPI controller Date: Tue, 15 Jan 2019 09:50:33 +0000 Message-ID: <1547545697-4042-3-git-send-email-yogeshnarayan.gaur@nxp.com> References: <1547545697-4042-1-git-send-email-yogeshnarayan.gaur@nxp.com> Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Cc: "robh@kernel.org" , "mark.rutland@arm.com" , "shawnguo@kernel.org" , "linux-arm-kernel@lists.infradead.org" , "computersforpeace@gmail.com" , "frieder.schrempf@kontron.de" , "linux-kernel@vger.kernel.org" , Yogesh Narayan Gaur To: "linux-mtd@lists.infradead.org" , "boris.brezillon@bootlin.com" , "marek.vasut@gmail.com" , "broonie@kernel.org" , "linux-spi@vger.kernel.org" , "devicetree@vger.kernel.org" Return-path: In-Reply-To: <1547545697-4042-1-git-send-email-yogeshnarayan.gaur@nxp.com> Content-Language: en-US Sender: linux-kernel-owner@vger.kernel.org List-Id: linux-spi.vger.kernel.org Add binding file for NXP FlexSPI controller Signed-off-by: Yogesh Narayan Gaur Reviewed-by: Rob Herring --- Changes for v7: - None Changes for v6: - None Changes for v5: - None Changes for v4: - Incorporated Rob review comments. Changes for v3: - Removed node property 'big-endian'. Changes for v2: - Incorporated Rob review comments. .../devicetree/bindings/spi/spi-nxp-fspi.txt | 39 +++++++++++++++++++ 1 file changed, 39 insertions(+) create mode 100644 Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt diff --git a/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt b/Docum= entation/devicetree/bindings/spi/spi-nxp-fspi.txt new file mode 100644 index 000000000000..2cd67eb727d4 --- /dev/null +++ b/Documentation/devicetree/bindings/spi/spi-nxp-fspi.txt @@ -0,0 +1,39 @@ +* 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 + +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: + +fspi0: spi@20c0000 { + compatible =3D "nxp,lx2160a-fspi"; + reg =3D <0x0 0x20c0000 0x0 0x10000>, <0x0 0x20000000 0x0 0x10000000>; + reg-names =3D "fspi_base", "fspi_mmap"; + interrupts =3D <0 25 0x4>; /* Level high type */ + clocks =3D <&clockgen 4 3>, <&clockgen 4 3>; + clock-names =3D "fspi_en", "fspi"; + + mt35xu512aba0: flash@0 { + reg =3D <0>; + .... + }; + + mt35xu512aba1: flash@1 { + reg =3D <1>; + .... + }; +}; --=20 2.17.1