61 lines
1.8 KiB
Diff
61 lines
1.8 KiB
Diff
From 28ec0b7e48bb27435a8b3134019b88628faf497f Mon Sep 17 00:00:00 2001
|
|
From: Xiangsheng Hou <xiangsheng.hou@mediatek.com>
|
|
Date: Tue, 11 Dec 2018 17:37:28 +0800
|
|
Subject: [PATCH 4/6] dt-bindings: ARM: MediaTek: Document devicetree bindings
|
|
for SPI NAND interface
|
|
|
|
Change-Id: I9ece142055ae27100da95826fb3ea1960c2994e6
|
|
Signed-off-by: Xiangsheng Hou <xiangsheng.hou@mediatek.com>
|
|
---
|
|
.../devicetree/bindings/spi/spi-mtk-snfi.txt | 44 +++++++++++++++++++
|
|
1 file changed, 44 insertions(+)
|
|
create mode 100644 Documentation/devicetree/bindings/spi/spi-mtk-snfi.txt
|
|
|
|
--- /dev/null
|
|
+++ b/Documentation/devicetree/bindings/spi/spi-mtk-snfi.txt
|
|
@@ -0,0 +1,44 @@
|
|
+MediaTek SoCs SPI NAND FLASH interface (SNFI) DT binding
|
|
+
|
|
+This file documents the device tree bindings for MTK SoCs SPI NAND controller.
|
|
+Note that Parallel Nand and SPI NAND is alternative on MTK SoCs.
|
|
+
|
|
+Required properties:
|
|
+- compatible: should be "mediatek,mt7622-snfi"
|
|
+- reg: base physical address and size of SNFI.
|
|
+- interrupts: interrupts of SNFI.
|
|
+- clocks: SNFI required clocks.
|
|
+- clock-names: SNFI clocks internal names.
|
|
+- #address-cells: NAND chip index, should be 1.
|
|
+- #size-cells: Should be 0.
|
|
+
|
|
+Example:
|
|
+ snfi: spi@1100d000 {
|
|
+ compatible = "mediatek,mt7622-snfi";
|
|
+ reg = <0 0x1100d000 0 0x1000>;
|
|
+ interrupts = <GIC_SPI 96 IRQ_TYPE_LEVEL_LOW>;
|
|
+ clocks = <&pericfg CLK_PERI_NFI_PD>,
|
|
+ <&pericfg CLK_PERI_SNFI_PD>;
|
|
+ clock-names = "nfi_clk", "spi_clk";
|
|
+ ecc-engine = <&bch>;
|
|
+ #address-cells = <1>;
|
|
+ #size-cells = <0>;
|
|
+ };
|
|
+
|
|
+Subnodes properties:
|
|
+- Should use spi-nand framework, see Documentation/devicetree/bindings/mtd/spi-nand.txt
|
|
+
|
|
+Example:
|
|
+&snfi {
|
|
+ pinctrl-names = "default";
|
|
+ pinctrl-0 = <&serial_nand_pins>;
|
|
+ status = "okay";
|
|
+
|
|
+ spi_nand@0 {
|
|
+ #address-cells = <1>;
|
|
+ #size-cells = <1>;
|
|
+ compatible = "spi-nand";
|
|
+ spi-max-frequency = <104000000>;
|
|
+ reg = <0>;
|
|
+ };
|
|
+};
|