From mboxrd@z Thu Jan 1 00:00:00 1970 From: Frieder Schrempf Subject: [PATCH v2 05/12] dt-bindings: spi: Adjust the bindings for the FSL QSPI driver Date: Thu, 5 Jul 2018 13:15:01 +0200 Message-ID: <1530789310-16254-6-git-send-email-frieder.schrempf@exceet.de> References: <1530789310-16254-1-git-send-email-frieder.schrempf@exceet.de> Return-path: In-Reply-To: <1530789310-16254-1-git-send-email-frieder.schrempf@exceet.de> Sender: linux-kernel-owner@vger.kernel.org To: linux-mtd@lists.infradead.org, boris.brezillon@bootlin.com, linux-spi@vger.kernel.org Cc: dwmw2@infradead.org, computersforpeace@gmail.com, marek.vasut@gmail.com, richard@nod.at, miquel.raynal@bootlin.com, broonie@kernel.org, david.wolfe@nxp.com, fabio.estevam@nxp.com, prabhakar.kushwaha@nxp.com, yogeshnarayan.gaur@nxp.com, han.xu@nxp.com, shawnguo@kernel.org, Frieder Schrempf , Rob Herring , Mark Rutland , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org List-Id: devicetree@vger.kernel.org Adjust the documentation of the new SPI memory interface based driver to reflect the new drivers settings. Signed-off-by: Frieder Schrempf --- Changes in v2: ============== * Split the moving and editing of the dt-bindings in two patches .../devicetree/bindings/spi/spi-fsl-qspi.txt | 22 ++++++++++---------- 1 file changed, 11 insertions(+), 11 deletions(-) diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt b/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt index 483e9cf..8b4eed7 100644 --- a/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt +++ b/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt @@ -3,9 +3,8 @@ Required properties: - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi", "fsl,imx7d-qspi", "fsl,imx6ul-qspi", - "fsl,ls1021a-qspi" + "fsl,ls1021a-qspi", "fsl,ls2080a-qspi" or - "fsl,ls2080a-qspi" followed by "fsl,ls1021a-qspi", "fsl,ls1043a-qspi" followed by "fsl,ls1021a-qspi" - reg : the first contains the register location and length, the second contains the memory mapping address and length @@ -15,14 +14,15 @@ Required properties: - clock-names : Should contain the name of the clocks: "qspi_en" and "qspi". Optional properties: - - fsl,qspi-has-second-chip: The controller has two buses, bus A and bus B. - Each bus can be connected with two NOR flashes. - Most of the time, each bus only has one NOR flash - connected, this is the default case. - But if there are two NOR flashes connected to the - bus, you should enable this property. - (Please check the board's schematic.) - - big-endian : That means the IP register is big endian + - big-endian : That means the IP registers format is big endian + +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: @@ -40,7 +40,7 @@ qspi0: quadspi@40044000 { }; }; -Example showing the usage of two SPI NOR devices: +Example showing the usage of two SPI NOR devices on bus A: &qspi2 { pinctrl-names = "default"; -- 2.7.4