dt-bindings: mtd: Convert stm32 fmc2-nand bindings to json-schema
Convert the STM32 fmc2-nand binding to DT schema format using json-schema Signed-off-by: Benjamin Gaignard <benjamin.gaignard@st.com> CC: Christophe Kerello <christophe.kerello@st.com> Signed-off-by: Rob Herring <robh@kernel.org>
This commit is contained in:
Benjamin Gaignard
Rob Herring
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mtd/st,stm32-fmc2-nand.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: STMicroelectronics Flexible Memory Controller 2 (FMC2) Bindings
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maintainers:
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- Christophe Kerello <christophe.kerello@st.com>
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allOf:
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- $ref: "nand-controller.yaml#"
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properties:
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compatible:
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const: st,stm32mp15-fmc2
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reg:
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items:
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- description: Registers
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- description: Chip select 0 data
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- description: Chip select 0 command
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- description: Chip select 0 address space
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- description: Chip select 1 data
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- description: Chip select 1 command
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- description: Chip select 1 address space
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interrupts:
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maxItems: 1
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clocks:
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maxItems: 1
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resets:
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maxItems: 1
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dmas:
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items:
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- description: tx DMA channel
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- description: rx DMA channel
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- description: ecc DMA channel
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dma-names:
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items:
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- const: tx
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- const: rx
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- const: ecc
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patternProperties:
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"^nand@[a-f0-9]$":
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type: object
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properties:
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nand-ecc-step-size:
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const: 512
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nand-ecc-strength:
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enum: [1, 4 ,8 ]
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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examples:
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- |
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/clock/stm32mp1-clks.h>
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#include <dt-bindings/reset/stm32mp1-resets.h>
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nand-controller@58002000 {
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compatible = "st,stm32mp15-fmc2";
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reg = <0x58002000 0x1000>,
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<0x80000000 0x1000>,
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<0x88010000 0x1000>,
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<0x88020000 0x1000>,
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<0x81000000 0x1000>,
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<0x89010000 0x1000>,
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<0x89020000 0x1000>;
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interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
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dmas = <&mdma1 20 0x10 0x12000a02 0x0 0x0>,
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<&mdma1 20 0x10 0x12000a08 0x0 0x0>,
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<&mdma1 21 0x10 0x12000a0a 0x0 0x0>;
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dma-names = "tx", "rx", "ecc";
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clocks = <&rcc FMC_K>;
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resets = <&rcc FMC_R>;
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#address-cells = <1>;
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#size-cells = <0>;
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nand@0 {
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reg = <0>;
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nand-on-flash-bbt;
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#address-cells = <1>;
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#size-cells = <1>;
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};
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};
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...
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@ -1,61 +0,0 @@
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STMicroelectronics Flexible Memory Controller 2 (FMC2)
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NAND Interface
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Required properties:
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- compatible: Should be one of:
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* st,stm32mp15-fmc2
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- reg: NAND flash controller memory areas.
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First region contains the register location.
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Regions 2 to 4 respectively contain the data, command,
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and address space for CS0.
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Regions 5 to 7 contain the same areas for CS1.
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- interrupts: The interrupt number
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- pinctrl-0: Standard Pinctrl phandle (see: pinctrl/pinctrl-bindings.txt)
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- clocks: The clock needed by the NAND flash controller
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Optional properties:
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- resets: Reference to a reset controller asserting the FMC controller
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- dmas: DMA specifiers (see: dma/stm32-mdma.txt)
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- dma-names: Must be "tx", "rx" and "ecc"
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* NAND device bindings:
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Required properties:
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- reg: describes the CS lines assigned to the NAND device.
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Optional properties:
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- nand-on-flash-bbt: see nand-controller.yaml
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- nand-ecc-strength: see nand-controller.yaml
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- nand-ecc-step-size: see nand-controller.yaml
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The following ECC strength and step size are currently supported:
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- nand-ecc-strength = <1>, nand-ecc-step-size = <512> (Hamming)
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- nand-ecc-strength = <4>, nand-ecc-step-size = <512> (BCH4)
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- nand-ecc-strength = <8>, nand-ecc-step-size = <512> (BCH8) (default)
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Example:
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fmc: nand-controller@58002000 {
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compatible = "st,stm32mp15-fmc2";
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reg = <0x58002000 0x1000>,
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<0x80000000 0x1000>,
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<0x88010000 0x1000>,
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<0x88020000 0x1000>,
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<0x81000000 0x1000>,
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<0x89010000 0x1000>,
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<0x89020000 0x1000>;
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interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&rcc FMC_K>;
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resets = <&rcc FMC_R>;
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pinctrl-names = "default";
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pinctrl-0 = <&fmc_pins_a>;
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#address-cells = <1>;
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#size-cells = <0>;
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nand@0 {
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reg = <0>;
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nand-on-flash-bbt;
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#address-cells = <1>;
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#size-cells = <1>;
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};
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};
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