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Message-ID: <1585678079-5999-2-git-send-email-weijie.gao@mediatek.com>
Date:   Wed, 1 Apr 2020 02:07:59 +0800
From:   Weijie Gao <weijie.gao@...iatek.com>
To:     <linux-mtd@...ts.infradead.org>
CC:     <linux-mediatek@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, <linux-mips@...r.kernel.org>,
        <devicetree@...r.kernel.org>,
        Miquel Raynal <miquel.raynal@...tlin.com>,
        Richard Weinberger <richard@....at>,
        Vignesh Raghavendra <vigneshr@...com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Boris Brezillon <bbrezillon@...nel.org>,
        Frieder Schrempf <frieder.schrempf@...tron.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Anders Roxell <anders.roxell@...aro.org>,
        Brendan Higgins <brendanhiggins@...gle.com>,
        Piotr Sroka <piotrs@...ence.com>,
        Mason Yang <masonccyang@...c.com.tw>,
        Arnd Bergmann <arnd@...db.de>,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Weijie Gao <weijie.gao@...iatek.com>
Subject: [PATCH 2/2] dt-bindings: add documentation for mt7621-nand driver

This patch adds documentation for MediaTek MT7621 NAND flash controller
driver.

Signed-off-by: Weijie Gao <weijie.gao@...iatek.com>
---
 .../bindings/mtd/mediatek,mt7621-nfc.yaml     | 68 +++++++++++++++++++
 1 file changed, 68 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mtd/mediatek,mt7621-nfc.yaml

diff --git a/Documentation/devicetree/bindings/mtd/mediatek,mt7621-nfc.yaml b/Documentation/devicetree/bindings/mtd/mediatek,mt7621-nfc.yaml
new file mode 100644
index 000000000000..1ca0c5e95e4c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mtd/mediatek,mt7621-nfc.yaml
@@ -0,0 +1,68 @@
+# SPDX-License-Identifier: GPL-2.0
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mtd/mediatek,mt7621-nfc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: MediaTek MT7621 SoC NAND Flash Controller (NFC) DT binding
+
+maintainers:
+  - Weijie Gao <weijie.gao@...iatek.com>
+
+description: |
+  This driver uses a single node to describe both NAND Flash controller
+  interface (NFI) and ECC engine for MT7621 SoC.
+  MT7621 supports only one chip select.
+
+properties:
+  "#address-cells": false
+  "#size-cells": false
+
+  compatible:
+    enum:
+      - mediatek,mt7621-nfc
+
+  reg:
+    items:
+      - description: Register base of NFI core
+      - description: Register base of ECC engine
+
+  reg-names:
+    items:
+      - const: nfi
+      - const: ecc
+
+  clocks:
+    items:
+      - description: Source clock for NFI core, fixed 125MHz
+
+  clock-names:
+    items:
+      - const: nfi_clk
+
+required:
+  - compatible
+  - reg
+  - reg-names
+  - clocks
+  - clock-names
+
+examples:
+  - |
+    nficlock: nficlock {
+    	#clock-cells = <0>;
+    	compatible = "fixed-clock";
+
+    	clock-frequency = <125000000>;
+    };
+
+    nand@...03000 {
+    	compatible = "mediatek,mt7621-nfc";
+
+    	reg = <0x1e003000 0x800
+    	       0x1e003800 0x800>;
+    	reg-names = "nfi", "ecc";
+
+    	clocks = <&nficlock>;
+    	clock-names = "nfi_clk";
+    };
-- 
2.17.1

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