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From 3d5f4da8296b23eb3abf8b13122b0d06a215e79c Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Wed, 1 Apr 2020 02:07:59 +0800
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@mediatek.com>
---
.../bindings/mtd/mediatek,mt7621-nfc.yaml | 68 ++++++++++++++++++++++
1 file changed, 68 insertions(+)
create mode 100644 Documentation/devicetree/bindings/mtd/mediatek,mt7621-nfc.yaml
--- /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@mediatek.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@1e003000 {
+ compatible = "mediatek,mt7621-nfc";
+
+ reg = <0x1e003000 0x800
+ 0x1e003800 0x800>;
+ reg-names = "nfi", "ecc";
+
+ clocks = <&nficlock>;
+ clock-names = "nfi_clk";
+ };
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