openwrtv4/target/linux/ramips/patches-3.14/0049-DT-Add-documentation-for-spi-rt2880.patch
Luka Perkov 02629d8f87 kernel: update 3.14 to 3.14.18
Targets were build tested and patches are refreshed.

Signed-off-by: Luka Perkov <luka@openwrt.org>

SVN-Revision: 42463
2014-09-10 21:40:19 +00:00

44 lines
1.2 KiB
Diff

From 6ed8d03e5f4283b60dffea5c10ff1484141824e7 Mon Sep 17 00:00:00 2001
From: John Crispin <blogic@openwrt.org>
Date: Fri, 9 Aug 2013 20:12:59 +0200
Subject: [PATCH 49/57] DT: Add documentation for spi-rt2880
Describe the SPI master found on the MIPS based Ralink RT2880 SoC.
Signed-off-by: John Crispin <blogic@openwrt.org>
---
.../devicetree/bindings/spi/spi-rt2880.txt | 28 ++++++++++++++++++++
1 file changed, 28 insertions(+)
create mode 100644 Documentation/devicetree/bindings/spi/spi-rt2880.txt
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-rt2880.txt
@@ -0,0 +1,28 @@
+Ralink SoC RT2880 SPI master controller.
+
+This SPI controller is found on most wireless SoCs made by ralink.
+
+Required properties:
+- compatible : "ralink,rt2880-spi"
+- reg : The register base for the controller.
+- #address-cells : <1>, as required by generic SPI binding.
+- #size-cells : <0>, also as required by generic SPI binding.
+
+Child nodes as per the generic SPI binding.
+
+Example:
+
+ spi@b00 {
+ compatible = "ralink,rt2880-spi";
+ reg = <0xb00 0x100>;
+
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ m25p80@0 {
+ compatible = "m25p80";
+ reg = <0>;
+ spi-max-frequency = <10000000>;
+ };
+ };
+