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85 lines
2 KiB
Diff
85 lines
2 KiB
Diff
From 3d5f4da8296b23eb3abf8b13122b0d06a215e79c Mon Sep 17 00:00:00 2001
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From: Weijie Gao <weijie.gao@mediatek.com>
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Date: Wed, 1 Apr 2020 02:07:59 +0800
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Subject: [PATCH 2/2] dt-bindings: add documentation for mt7621-nand driver
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This patch adds documentation for MediaTek MT7621 NAND flash controller
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driver.
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Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
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---
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.../bindings/mtd/mediatek,mt7621-nfc.yaml | 68 ++++++++++++++++++++++
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1 file changed, 68 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/mtd/mediatek,mt7621-nfc.yaml
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/mtd/mediatek,mt7621-nfc.yaml
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@@ -0,0 +1,68 @@
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+# SPDX-License-Identifier: GPL-2.0
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+%YAML 1.2
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+---
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+$id: http://devicetree.org/schemas/mtd/mediatek,mt7621-nfc.yaml#
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+$schema: http://devicetree.org/meta-schemas/core.yaml#
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+
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+title: MediaTek MT7621 SoC NAND Flash Controller (NFC) DT binding
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+
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+maintainers:
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+ - Weijie Gao <weijie.gao@mediatek.com>
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+
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+description: |
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+ This driver uses a single node to describe both NAND Flash controller
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+ interface (NFI) and ECC engine for MT7621 SoC.
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+ MT7621 supports only one chip select.
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+
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+properties:
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+ "#address-cells": false
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+ "#size-cells": false
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+
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+ compatible:
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+ enum:
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+ - mediatek,mt7621-nfc
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+
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+ reg:
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+ items:
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+ - description: Register base of NFI core
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+ - description: Register base of ECC engine
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+
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+ reg-names:
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+ items:
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+ - const: nfi
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+ - const: ecc
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+
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+ clocks:
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+ items:
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+ - description: Source clock for NFI core, fixed 125MHz
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+
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+ clock-names:
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+ items:
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+ - const: nfi_clk
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+
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+required:
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+ - compatible
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+ - reg
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+ - reg-names
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+ - clocks
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+ - clock-names
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+
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+examples:
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+ - |
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+ nficlock: nficlock {
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+ #clock-cells = <0>;
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+ compatible = "fixed-clock";
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+
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+ clock-frequency = <125000000>;
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+ };
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+
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+ nand@1e003000 {
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+ compatible = "mediatek,mt7621-nfc";
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+
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+ reg = <0x1e003000 0x800
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+ 0x1e003800 0x800>;
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+ reg-names = "nfi", "ecc";
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+
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+ clocks = <&nficlock>;
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+ clock-names = "nfi_clk";
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+ };
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