ramips: mt7621: add new NAND driver

[openwrt/staging/wigyori.git] / target / linux / ramips / patches-5.4 / 0301-dt-bindings-add-documentation-for-mt7621-nand-driver.patch

diff --git a/target/linux/ramips/patches-5.4/0301-dt-bindings-add-documentation-for-mt7621-nand-driver.patch b/target/linux/ramips/patches-5.4/0301-dt-bindings-add-documentation-for-mt7621-nand-driver.patch
new file mode 100644 (file)
index 0000000..3d122c1
--- /dev/null
+++ b/target/linux/ramips/patches-5.4/0301-dt-bindings-add-documentation-for-mt7621-nand-driver.patch
@@ -0,0 +1,85 @@
+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";
++    };