Documentation support for Rockchip RK3xxx NAND flash controllers Signed-off-by: Yifeng Zhao <yifeng.zhao@xxxxxxxxxxxxxx> --- Changes in v4: - The compatible define with rkxx_nfc - Add assigned-clocks - Fix some wrong define Changes in v3: - Change the title for the dt-bindings Changes in v2: None .../bindings/mtd/rockchip,nand.yaml | 101 ++++++++++++++++++ 1 file changed, 101 insertions(+) create mode 100644 Documentation/devicetree/bindings/mtd/rockchip,nand.yaml diff --git a/Documentation/devicetree/bindings/mtd/rockchip,nand.yaml b/Documentation/devicetree/bindings/mtd/rockchip,nand.yaml new file mode 100644 index 000000000000..907af0d52b6b --- /dev/null +++ b/Documentation/devicetree/bindings/mtd/rockchip,nand.yaml @@ -0,0 +1,101 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/mtd/rockchip,nand.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Rockchip SoCs NAND FLASH Controller (NFC) Device Tree Bindings + +allOf: + - $ref: "nand-controller.yaml" + +maintainers: + - Yifeng Zhao <yifeng.zhao@xxxxxxxxxxxxxx> + +properties: + "#address-cells": true + "#size-cells": true + + compatible: + enum: + - rockchip,px30_nfc + - rockchip,rk3308_nfc + - rockchip,rv1108_nfc + - rockchip,rk3066_nfc + - rockchip,rk3188_nfc + - rockchip,rk3288_nfc + - rockchip,rk3368_nfc + - rockchip,rk2928_nfc + - rockchip,rk3036_nfc + - rockchip,rk3128_nfc + - rockchip,rk3228_nfc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Module Clock + - description: Bus Clock + + clock-names: + items: + - const: nfc + - const: ahb + +patternProperties: + "^nand@[0-3]$": + type: object + properties: + reg: + minimum: 0 + maximum: 3 + + nand-ecc-step-size: + const: 1024 + + nand-ecc-strength: + enum: [16, 24 , 40, 60, 70] + + nand-bus-width: + const: 8 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/rk3308-cru.h> + nfc: nand-controller@ff4b0000 { + compatible = "rockchip,nfc"; + reg = <0x0 0xff4b0000 0x0 0x4000>; + interrupts = <GIC_SPI 81 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&cru SCLK_NANDC>, <&cru HCLK_NANDC>; + clock-names = "nfc", "ahb"; + assigned-clocks = <&clks SCLK_NANDC>; + assigned-clock-rates = <150000000>; + + pinctrl-names = "default"; + pinctrl-0 = <&flash_csn0 &flash_rdy &flash_ale &flash_cle + &flash_wrn &flash_rdn &flash_bus8>; + + #address-cells = <1>; + #size-cells = <0>; + nand@0 { + reg = <0>; + nand-ecc-mode = "hw"; + nand-ecc-strength = <16>; + nand-ecc-step-size = <1024>; + nand-bus-width = <8>; + }; + }; + +... -- 2.17.1 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
