linux-kernel - [RFC PATCH v1 01/10] dt-bindings: mtd: add rockchip nand controller bindings

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Date:   Wed,  8 Jan 2020 21:53:29 +0100
From:   Johan Jonker <jbx6244@...il.com>
To:     miquel.raynal@...tlin.com
Cc:     richard@....at, vigneshr@...com, robh+dt@...nel.org,
        mark.rutland@....com, heiko@...ech.de,
        linux-mtd@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [RFC PATCH v1 01/10] dt-bindings: mtd: add rockchip nand controller bindings

Add the Rockchip NAND controller bindings.

Signed-off-by: Johan Jonker <jbx6244@...il.com>
---
 .../devicetree/bindings/mtd/rockchip,nandc.yaml    | 78 ++++++++++++++++++++++
 1 file changed, 78 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/rockchip,nandc.yaml

diff --git a/Documentation/devicetree/bindings/mtd/rockchip,nandc.yaml b/Documentation/devicetree/bindings/mtd/rockchip,nandc.yaml
new file mode 100644
index 000000000..573d1a580
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/rockchip,nandc.yaml
@@ -0,0 +1,78 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/rockchip,nandc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Rockchip NAND Controller Device Tree Bindings
+
+allOf:
+  - $ref: "nand-controller.yaml"
+
+maintainers:
+  - Heiko Stuebner <heiko@...ech.de>
+
+properties:
+  compatible:
+    enum:
+      - rockchip,nandc-v6
+      - rockchip,nandc-v9
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    maxItems: 2
+
+  clock-names:
+    oneOf:
+      - items:
+        - const: hclk_nandc
+      - items:
+        - const: clk_nandc
+        - const: hclk_nandc
+
+patternProperties:
+  "^nand@[a-f0-9]+$":
+    type: object
+    properties:
+      reg:
+        minimum: 0
+        maximum: 3
+
+      nand-is-boot-medium: true
+
+    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@...00000 {
+      compatible = "rockchip,nandc-v6";
+      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;
+      };
+    };
+
+...
-- 
2.11.0