On 12/08/2024 05:00, Hui-Ping Chen wrote: > Add dt-bindings for the Nuvoton MA35 SoC NAND Controller. > > Signed-off-by: Hui-Ping Chen <hpchen0nvt@xxxxxxxxx> > --- > .../bindings/mtd/nuvoton,ma35d1-nand.yaml | 97 +++++++++++++++++++ > 1 file changed, 97 insertions(+) > create mode 100644 Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml > > diff --git a/Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml b/Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml > new file mode 100644 > index 000000000000..988c43bc6e99 > --- /dev/null > +++ b/Documentation/devicetree/bindings/mtd/nuvoton,ma35d1-nand.yaml > @@ -0,0 +1,97 @@ > +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) > +%YAML 1.2 > +--- > +$id: http://devicetree.org/schemas/mtd/nuvoton,ma35d1-nand.yaml# > +$schema: http://devicetree.org/meta-schemas/core.yaml# > + > +title: Nuvoton MA35D1 NAND Flash Interface (NFI) Controller > + > +allOf: > + - $ref: nand-controller.yaml# allOf goes usually just before properties. > + > +maintainers: > + - Hui-Ping Chen <hpchen0nvt@xxxxxxxxx> > + > +properties: > + compatible: > + enum: > + - nuvoton,ma35d1-nand > + > + reg: > + maxItems: 1 > + > + interrupts: > + maxItems: 1 > + > + clocks: > + minItems: 1 This cannot be min only. It's unconstrained. maxItems instead. There is no existing code like this so this should make you wonder... > + > +patternProperties: > + "^nand@[a-f0-9]$": > + type: object > + $ref: raw-nand-chip.yaml > + properties: > + nand-ecc-mode: > + const: hw No, drop the property. It does not make sense to have it const. Compatible defines it. > + > + nand-ecc-step-size: > + enum: [512, 1024] No defaults? So is this required? > + > + nand-ecc-strength: > + enum: [8, 12, 24] No defaults? So is this required? > + > + nand-bus-width: > + const: 8 Drop property. > + > + unevaluatedProperties: false > + > +required: > + - compatible > + - reg > + - interrupts > + - clocks > + > +unevaluatedProperties: false > + > +examples: > + - | > + #include <dt-bindings/interrupt-controller/arm-gic.h> > + #include <dt-bindings/clock/nuvoton,ma35d1-clk.h> > + > + soc { > + #address-cells = <2>; > + #size-cells = <2>; > + > + nand-controller@401A0000 { > + compatible = "nuvoton,ma35d1-nand"; > + reg = <0x0 0x401A0000 0x0 0x1000>; > + interrupts = <GIC_SPI 38 IRQ_TYPE_LEVEL_HIGH>; > + clocks = <&clk NAND_GATE>; > + #address-cells = <1>; > + #size-cells = <0>; > + > + nand@0 { > + reg = <0>; > + > + nand-on-flash-bbt; > + nand-ecc-mode = "hw"; Drop > + nand-ecc-step-size = <512>; > + nand-ecc-strength = <8>; > + nand-bus-width = <8>; Drop > + > + partitions { > + compatible = "fixed-partitions"; > + #address-cells = <1>; > + #size-cells = <1>; > + > + uboot@0 { > + label = "nand-uboot"; > + read-only; > + reg = <0x0 0x300000>; > + }; > + }; > + }; > + }; > + }; > + > +... Best regards, Krzysztof
