Re: [PATCH v3 7/9] dt-bindings: mtd: Split ECC engine with rawnand controller

Hi Krzysztof,

krzysztof.kozlowski@linaro.org wrote on Thu, 8 Dec 2022 10:44:17 +0100:

On 08/12/2022 07:29, Xiangsheng Hou wrote:

quoted

Split MediaTek ECC engine with rawnand controller and convert to
YAML schema.

Signed-off-by: Xiangsheng Hou <redacted>
---
 .../bindings/mtd/mediatek,mtk-nfc.yaml        | 154 +++++++++++++++
 .../mtd/mediatek,nand-ecc-engine.yaml         |  62 ++++++
 .../devicetree/bindings/mtd/mtk-nand.txt      | 176 ------------------
 3 files changed, 216 insertions(+), 176 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mtd/mediatek,mtk-nfc.yaml
 create mode 100644 Documentation/devicetree/bindings/mtd/mediatek,nand-ecc-engine.yaml
 delete mode 100644 Documentation/devicetree/bindings/mtd/mtk-nand.txt

diff --git a/Documentation/devicetree/bindings/mtd/mediatek,mtk-nfc.yaml b/Documentation/devicetree/bindings/mtd/mediatek,mtk-nfc.yaml
new file mode 100644
index 000000000000..eb1a44c7ae4e
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/mediatek,mtk-nfc.yaml

@@ -0,0 +1,154 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/mediatek,mtk-nfc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek(MTK) SoCs raw NAND FLASH controller (NFC)
+
+maintainers:
+  - Xiangsheng Hou <xiangsheng.hou@mediatek.com>
+
+properties:
+  compatible:
+    enum:
+      - mediatek,mt2701-nfc
+      - mediatek,mt2712-nfc
+      - mediatek,mt7622-nfc
+
+  reg:
+    items:
+      - description: Base physical address and size of NFI.
+
+  interrupts:
+    items:
+      - description: NFI interrupt
+
+  clocks:
+    items:
+      - description: clock used for the controller
+      - description: clock used for the pad
+
+  clock-names:
+    items:
+      - const: nfi_clk
+      - const: pad_clk
+
+  ecc-engine:
+    description: device-tree node of the required ECC engine.
+    $ref: /schemas/types.yaml#/definitions/phandle
+
+patternProperties:
+  "^nand@[a-f0-9]$":
+    type: object  

This should be instead:
    $ref: nand-chip.yaml#
    unevaluatedProperties: false

and then properties below (due to current dtschema limitations) should
list properties from nand-controller.yaml:

      nand-on-flash-bbt: true

Optionally, we could create additional schema - nand-controller-chip,
which would be referenced directly by nand-controller and itself would
ref nand-chip.

Isn't this enough? (in linux-next)
https://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux.git/tree/Documentation/devicetree/bindings/mtd/nand-controller.yaml?h=mtd/next#n54

Thanks,
Miquèl

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