openwrt/target/linux/brcm63xx/patches-4.9/001-4.12-05-spi-bcm63xx-hsspi-document-device-tree-bindings.patch

From ff759cc25db31bbb3469abb16a0306f110c4c7fa Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Thu, 10 Sep 2015 14:52:32 +0200
Subject: [PATCH 2/3] dt-bindings: spi: document bcm63xx HS SPI devicetree
 bindings

Add documentation for the bindings of the high speed SPI controller found
on newer bcm63xx SoCs.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
---
 .../devicetree/bindings/spi/spi-bcm63xx-hsspi.txt  | 33 ++++++++++++++++++++++
 1 file changed, 33 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/spi-bcm63xx-hsspi.txt

--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/spi-bcm63xx-hsspi.txt
@@ -0,0 +1,33 @@
+Binding for Broadcom BCM6328 High Speed SPI controller
+
+Required properties:
+- compatible: must contain of "brcm,bcm6328-hsspi".
+- reg: Base address and size of the controllers memory area.
+- interrupts: Interrupt for the SPI block.
+- clocks: phandles of the SPI clock and the PLL clock.
+- clock-names: must be "hsspi", "pll".
+- #address-cells: <1>, as required by generic SPI binding.
+- #size-cells: <0>, also as required by generic SPI binding.
+
+Optional properties:
+- num-cs: some controllers have less than 8 cs signals. Defaults to 8
+  if absent.
+
+Child nodes as per the generic SPI binding.
+
+Example:
+
+	spi@10001000 {
+		compatible = "brcm,bcm6328-hsspi";
+		reg = <0x10001000 0x600>;
+
+		interrupts = <29>;
+
+		clocks = <&clkctl 9>, <&hsspi_pll>;
+		clock-names = "hsspi", "pll";
+
+		num-cs = <2>;
+
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};