brcm63xx: register SPI controllers through DT

Register SPI controllers through device tree. We will wire up the clocks
at a later stage.

Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>

1 files changed, 51 insertions, 0 deletions

diff --git a/target/linux/brcm63xx/patches-4.4/001-4.12-05-spi-bcm63xx-hsspi-document-device-tree-bindings.patch b/target/linux/brcm63xx/patches-4.4/001-4.12-05-spi-bcm63xx-hsspi-document-device-tree-bindings.patch
new file mode 100644
index 0000000000..8f77f4eb24
--- /dev/null
+++ b/target/linux/brcm63xx/patches-4.4/001-4.12-05-spi-bcm63xx-hsspi-document-device-tree-bindings.patch
@@ -0,0 +1,51 @@
+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>;
++	};