diff options
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml | 98 | ||||
| -rw-r--r-- | Documentation/devicetree/bindings/mtd/stm32-fmc2-nand.txt | 61 |
2 files changed, 98 insertions, 61 deletions
diff --git a/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml b/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml new file mode 100644 index 000000000000..b059267f6d20 --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/st,stm32-fmc2-nand.yaml @@ -0,0 +1,98 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mtd/st,stm32-fmc2-nand.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: STMicroelectronics Flexible Memory Controller 2 (FMC2) Bindings + +maintainers: + - Christophe Kerello <christophe.kerello@st.com> + +allOf: + - $ref: "nand-controller.yaml#" + +properties: + compatible: + const: st,stm32mp15-fmc2 + + reg: + items: + - description: Registers + - description: Chip select 0 data + - description: Chip select 0 command + - description: Chip select 0 address space + - description: Chip select 1 data + - description: Chip select 1 command + - description: Chip select 1 address space + + interrupts: + maxItems: 1 + + clocks: + maxItems: 1 + + resets: + maxItems: 1 + + dmas: + items: + - description: tx DMA channel + - description: rx DMA channel + - description: ecc DMA channel + + dma-names: + items: + - const: tx + - const: rx + - const: ecc + +patternProperties: + "^nand@[a-f0-9]$": + type: object + properties: + nand-ecc-step-size: + const: 512 + + nand-ecc-strength: + enum: [1, 4 ,8 ] + +required: + - compatible + - reg + - interrupts + - clocks + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/stm32mp1-clks.h> + #include <dt-bindings/reset/stm32mp1-resets.h> + nand-controller@58002000 { + compatible = "st,stm32mp15-fmc2"; + reg = <0x58002000 0x1000>, + <0x80000000 0x1000>, + <0x88010000 0x1000>, + <0x88020000 0x1000>, + <0x81000000 0x1000>, + <0x89010000 0x1000>, + <0x89020000 0x1000>; + interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>; + dmas = <&mdma1 20 0x10 0x12000a02 0x0 0x0>, + <&mdma1 20 0x10 0x12000a08 0x0 0x0>, + <&mdma1 21 0x10 0x12000a0a 0x0 0x0>; + dma-names = "tx", "rx", "ecc"; + clocks = <&rcc FMC_K>; + resets = <&rcc FMC_R>; + #address-cells = <1>; + #size-cells = <0>; + + nand@0 { + reg = <0>; + nand-on-flash-bbt; + #address-cells = <1>; + #size-cells = <1>; + }; + }; + +... diff --git a/Documentation/devicetree/bindings/mtd/stm32-fmc2-nand.txt b/Documentation/devicetree/bindings/mtd/stm32-fmc2-nand.txt deleted file mode 100644 index e55895e8dae4..000000000000 --- a/Documentation/devicetree/bindings/mtd/stm32-fmc2-nand.txt +++ /dev/null @@ -1,61 +0,0 @@ -STMicroelectronics Flexible Memory Controller 2 (FMC2) -NAND Interface - -Required properties: -- compatible: Should be one of: - * st,stm32mp15-fmc2 -- reg: NAND flash controller memory areas. - First region contains the register location. - Regions 2 to 4 respectively contain the data, command, - and address space for CS0. - Regions 5 to 7 contain the same areas for CS1. -- interrupts: The interrupt number -- pinctrl-0: Standard Pinctrl phandle (see: pinctrl/pinctrl-bindings.txt) -- clocks: The clock needed by the NAND flash controller - -Optional properties: -- resets: Reference to a reset controller asserting the FMC controller -- dmas: DMA specifiers (see: dma/stm32-mdma.txt) -- dma-names: Must be "tx", "rx" and "ecc" - -* NAND device bindings: - -Required properties: -- reg: describes the CS lines assigned to the NAND device. - -Optional properties: -- nand-on-flash-bbt: see nand-controller.yaml -- nand-ecc-strength: see nand-controller.yaml -- nand-ecc-step-size: see nand-controller.yaml - -The following ECC strength and step size are currently supported: - - nand-ecc-strength = <1>, nand-ecc-step-size = <512> (Hamming) - - nand-ecc-strength = <4>, nand-ecc-step-size = <512> (BCH4) - - nand-ecc-strength = <8>, nand-ecc-step-size = <512> (BCH8) (default) - -Example: - - fmc: nand-controller@58002000 { - compatible = "st,stm32mp15-fmc2"; - reg = <0x58002000 0x1000>, - <0x80000000 0x1000>, - <0x88010000 0x1000>, - <0x88020000 0x1000>, - <0x81000000 0x1000>, - <0x89010000 0x1000>, - <0x89020000 0x1000>; - interrupts = <GIC_SPI 48 IRQ_TYPE_LEVEL_HIGH>; - clocks = <&rcc FMC_K>; - resets = <&rcc FMC_R>; - pinctrl-names = "default"; - pinctrl-0 = <&fmc_pins_a>; - #address-cells = <1>; - #size-cells = <0>; - - nand@0 { - reg = <0>; - nand-on-flash-bbt; - #address-cells = <1>; - #size-cells = <1>; - }; - }; |