From: Frieder Schrempf <frieder.schrempf@kontron.de>
To: linux-mtd@lists.infradead.org, boris.brezillon@bootlin.com,
linux-spi@vger.kernel.org
Cc: Mark Rutland <mark.rutland@arm.com>,
devicetree@vger.kernel.org, yogeshnarayan.gaur@nxp.com,
Rob Herring <robh+dt@kernel.org>,
richard@nod.at, prabhakar.kushwaha@nxp.com,
Frieder Schrempf <frieder.schrempf@exceet.de>,
shawnguo@kernel.org, linux-kernel@vger.kernel.org,
marek.vasut@gmail.com, han.xu@nxp.com, broonie@kernel.org,
miquel.raynal@bootlin.com, fabio.estevam@nxp.com,
david.wolfe@nxp.com, computersforpeace@gmail.com,
dwmw2@infradead.org
Subject: [PATCH v4 02/10] dt-bindings: spi: Move the bindings for the FSL QSPI driver
Date: Wed, 7 Nov 2018 15:43:19 +0100 [thread overview]
Message-ID: <1541601809-16950-3-git-send-email-frieder.schrempf@kontron.de> (raw)
In-Reply-To: <1541601809-16950-1-git-send-email-frieder.schrempf@kontron.de>
From: Frieder Schrempf <frieder.schrempf@exceet.de>
Move the documentation of the old SPI NOR driver to the place of the new
SPI memory interface based driver.
Signed-off-by: Frieder Schrempf <frieder.schrempf@exceet.de>
---
.../devicetree/bindings/mtd/fsl-quadspi.txt | 65 --------------------
.../devicetree/bindings/spi/spi-fsl-qspi.txt | 65 ++++++++++++++++++++
2 files changed, 65 insertions(+), 65 deletions(-)
diff --git a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt b/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
deleted file mode 100644
index 483e9cf..0000000
--- a/Documentation/devicetree/bindings/mtd/fsl-quadspi.txt
+++ /dev/null
@@ -1,65 +0,0 @@
-* Freescale Quad Serial Peripheral Interface(QuadSPI)
-
-Required properties:
- - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
- "fsl,imx7d-qspi", "fsl,imx6ul-qspi",
- "fsl,ls1021a-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
- - reg-names: Should contain the reg names "QuadSPI" and "QuadSPI-memory"
- - interrupts : Should contain the interrupt for the device
- - clocks : The clocks needed by the QuadSPI controller
- - 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
-
-Example:
-
-qspi0: quadspi@40044000 {
- compatible = "fsl,vf610-qspi";
- reg = <0x40044000 0x1000>, <0x20000000 0x10000000>;
- reg-names = "QuadSPI", "QuadSPI-memory";
- interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clks VF610_CLK_QSPI0_EN>,
- <&clks VF610_CLK_QSPI0>;
- clock-names = "qspi_en", "qspi";
-
- flash0: s25fl128s@0 {
- ....
- };
-};
-
-Example showing the usage of two SPI NOR devices:
-
-&qspi2 {
- pinctrl-names = "default";
- pinctrl-0 = <&pinctrl_qspi2>;
- status = "okay";
-
- flash0: n25q256a@0 {
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "micron,n25q256a", "jedec,spi-nor";
- spi-max-frequency = <29000000>;
- reg = <0>;
- };
-
- flash1: n25q256a@1 {
- #address-cells = <1>;
- #size-cells = <1>;
- compatible = "micron,n25q256a", "jedec,spi-nor";
- spi-max-frequency = <29000000>;
- reg = <1>;
- };
-};
diff --git a/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt b/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt
new file mode 100644
index 0000000..483e9cf
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-fsl-qspi.txt
@@ -0,0 +1,65 @@
+* Freescale Quad Serial Peripheral Interface(QuadSPI)
+
+Required properties:
+ - compatible : Should be "fsl,vf610-qspi", "fsl,imx6sx-qspi",
+ "fsl,imx7d-qspi", "fsl,imx6ul-qspi",
+ "fsl,ls1021a-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
+ - reg-names: Should contain the reg names "QuadSPI" and "QuadSPI-memory"
+ - interrupts : Should contain the interrupt for the device
+ - clocks : The clocks needed by the QuadSPI controller
+ - 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
+
+Example:
+
+qspi0: quadspi@40044000 {
+ compatible = "fsl,vf610-qspi";
+ reg = <0x40044000 0x1000>, <0x20000000 0x10000000>;
+ reg-names = "QuadSPI", "QuadSPI-memory";
+ interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clks VF610_CLK_QSPI0_EN>,
+ <&clks VF610_CLK_QSPI0>;
+ clock-names = "qspi_en", "qspi";
+
+ flash0: s25fl128s@0 {
+ ....
+ };
+};
+
+Example showing the usage of two SPI NOR devices:
+
+&qspi2 {
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_qspi2>;
+ status = "okay";
+
+ flash0: n25q256a@0 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "micron,n25q256a", "jedec,spi-nor";
+ spi-max-frequency = <29000000>;
+ reg = <0>;
+ };
+
+ flash1: n25q256a@1 {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ compatible = "micron,n25q256a", "jedec,spi-nor";
+ spi-max-frequency = <29000000>;
+ reg = <1>;
+ };
+};
--
2.7.4
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next parent reply other threads:[~2018-11-07 14:43 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1541601809-16950-1-git-send-email-frieder.schrempf@kontron.de>
2018-11-07 14:43 ` Frieder Schrempf [this message]
2018-11-08 8:37 ` [PATCH v4 02/10] dt-bindings: spi: Move the bindings for the FSL QSPI driver Boris Brezillon
2018-11-08 8:54 ` Schrempf Frieder
2018-11-07 14:43 ` [PATCH v4 03/10] dt-bindings: spi: Adjust " Frieder Schrempf
2018-11-08 8:41 ` Boris Brezillon
2018-11-08 8:48 ` Schrempf Frieder
2018-11-07 14:43 ` [PATCH v4 04/10] ARM: dts: Reflect change of FSL QSPI driver and remove unused properties Frieder Schrempf
2018-11-07 14:43 ` [PATCH v4 05/10] arm64: " Frieder Schrempf
2018-11-07 14:43 ` [PATCH v4 08/10] ARM: dts: ls1021a: Remove fsl, qspi-has-second-chip as it is not used Frieder Schrempf
2018-11-07 14:43 ` [PATCH v4 09/10] ARM64: dts: ls1046a: " Frieder Schrempf
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