[RFC PATCH v2 01/10] dt-bindings: mtd: add rockchip nand controller bindings

Johan Jonker
2020-01-24T16:31:13Z

Add the Rockchip NAND controller bindings.

Signed-off-by: Johan Jonker <jbx6244@gmail.com>
---
.../bindings/mtd/rockchip,nand-controller.yaml | 92 ++++++++++++++++++++++
1 file changed, 92 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/rockchip,nand-controller.yaml

diff --git a/Documentation/devicetree/bindings/mtd/rockchip,nand-controller.yaml b/Documentation/devicetree/bindings/mtd/rockchip,nand-controller.yaml
new file mode 100644
index 000000000..5c725f972
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/rockchip,nand-controller.yaml
@@ -0,0 +1,92 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/rockchip,nand-controller.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip NAND Controller Device Tree Bindings
+
+allOf:
+ - $ref: "nand-controller.yaml#"
+
+maintainers:
+ - Heiko Stuebner <heiko@sntech.de>
+
+properties:
+ compatible:
+ enum:
+ - rockchip,px30-nand-controller
+ - rockchip,rk3066-nand-controller
+ - rockchip,rk3228-nand-controller
+ - rockchip,rk3288-nand-controller
+ - rockchip,rk3308-nand-controller
+ - rockchip,rk3368-nand-controller
+ - rockchip,rv1108-nand-controller
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ minItems: 1
+ maxItems: 2
+
+ clock-names:
+ minItems: 1
+ items:
+ - const: hclk_nandc
+ - const: clk_nandc
+
+patternProperties:
+ "^nand@[a-f0-9]+$":
+ type: object
+ properties:
+ reg:
+ minimum: 0
+ maximum: 3
+
+ nand-is-boot-medium: true
+
+ rockchip,idb-res-blk-num:
+ minimum: 2
+ default: 16
+ allOf:
+ - $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ For legacy devices where the bootrom can only handle 24 bit BCH/ECC.
+ If specified it indicates the number of erase blocks in use by
+ the bootloader that need a lower BCH/ECC setting.
+ Only used in combination with 'nand-is-boot-medium'.
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+examples:
+ - |
+ #include <dt-bindings/clock/rk3188-cru-common.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ nandc: nand-controller@10500000 {
+ compatible = "rockchip,rk3066-nand-controller";
+ reg = <0x10500000 0x4000>;
+ interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&cru HCLK_NANDC0>;
+ clock-names = "hclk_nandc";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ nand@0 {
+ reg = <0>;
+ nand-is-boot-medium;
+ };
+ };
+
+...