linux-kernel - [PATCH v8 1/2] dt-bindings: mtd: Add Nand Flash Controller support for Intel LGM SoC

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Message-Id: <20200519043750.47789-2-vadivel.muruganx.ramuthevar@linux.intel.com>
Date:   Tue, 19 May 2020 12:37:49 +0800
From:   "Ramuthevar,Vadivel MuruganX" 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
To:     linux-kernel@...r.kernel.org, linux-mtd@...ts.infradead.org,
        devicetree@...r.kernel.org
Cc:     miquel.raynal@...tlin.com, richard@....at, vigneshr@...com,
        arnd@...db.de, brendanhiggins@...gle.com, tglx@...utronix.de,
        boris.brezillon@...labora.com, anders.roxell@...aro.org,
        masonccyang@...c.com.tw, robh+dt@...nel.org,
        linux-mips@...r.kernel.org, hauke.mehrtens@...el.com,
        andriy.shevchenko@...el.com, qi-ming.wu@...el.com,
        cheol.yong.kim@...el.com,
        Ramuthevar Vadivel Murugan 
        <vadivel.muruganx.ramuthevar@...ux.intel.com>
Subject: [PATCH v8 1/2] dt-bindings: mtd: Add Nand Flash Controller support for Intel LGM SoC

From: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>

Add YAML file for dt-bindings to support NAND Flash Controller
on Intel's Lightning Mountain SoC.

Signed-off-by: Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
---
 .../devicetree/bindings/mtd/intel,lgm-nand.yaml    | 91 ++++++++++++++++++++++
 1 file changed, 91 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/intel,lgm-nand.yaml

diff --git a/Documentation/devicetree/bindings/mtd/intel,lgm-nand.yaml b/Documentation/devicetree/bindings/mtd/intel,lgm-nand.yaml
new file mode 100644
index 000000000000..cd4e983a449e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/intel,lgm-nand.yaml
@@ -0,0 +1,91 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/intel,lgm-nand.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Intel LGM SoC NAND Controller Device Tree Bindings
+
+allOf:
+  - $ref: "nand-controller.yaml"
+
+maintainers:
+  - Ramuthevar Vadivel Murugan <vadivel.muruganx.ramuthevar@...ux.intel.com>
+
+properties:
+  compatible:
+    const: intel,lgm-nand-controller
+
+  reg:
+    items:
+       - description: ebunand registers
+       - description: hsnand registers
+       - description: nand_cs0 external flash access
+       - description: nand_cs1 external flash access
+       - description: addr_sel0 memory region enable and access
+       - description: addr_sel1 memory region enable and access
+
+  clocks:
+    maxItems: 1
+
+  dmas:
+    maxItems: 2
+
+  dma-names:
+    items:
+      - const: tx
+      - const: rx
+
+patternProperties:
+  "^nand@[a-f0-9]+$":
+    type: object
+    properties:
+      reg:
+        minimum: 0
+        maximum: 7
+
+      nand-ecc-mode: true
+
+      nand-ecc-algo:
+        const: hw
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - dmas
+  - dma-names
+
+additionalProperties: false
+
+examples:
+  - |
+    nand-controller@...00000 {
+      compatible = "intel,lgm-nand";
+      reg = <0xe0f00000 0x100>,
+            <0xe1000000 0x300>,
+            <0xe1400000 0x8000>,
+            <0xe1c00000 0x1000>,
+            <0x17400000 0x4>,
+            <0x17c00000 0x4>;
+      reg-names = "ebunand", "hsnand", "nand_cs0", "nand_cs1",
+        "addr_sel0","addr_sel1";
+      clocks = <&cgu0 125>;
+      dmas = <&dma0 8>, <&dma0 9>;
+      dma-names = "tx", "rx";
+      #address-cells = <1>;
+      #size-cells = <0>;
+      #clock-cells = <1>;
+
+      nand@0 {
+        reg = <0>;
+        nand-on-flash-bbt;
+        #address-cells = <1>;
+        #size-cells = <1>;
+      };
+    };
+
+...
-- 
2.11.0