From feac8c8bb9d087c8b5d2415c00c095735799eb6c Mon Sep 17 00:00:00 2001
From: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com>
Date: Thu, 18 Jan 2018 03:43:51 -0500
Subject: [PATCH] media: Add document file for CXD2880 SPI I/F

This is the document file for Sony CXD2880 DVB-T2/T tuner + demodulator.
It contains the description of the SPI adapter binding.

Signed-off-by: Yasunari Takiguchi <Yasunari.Takiguchi@sony.com>
Signed-off-by: Masayuki Yamamoto <Masayuki.Yamamoto@sony.com>
Signed-off-by: Hideki Nozawa <Hideki.Nozawa@sony.com>
Signed-off-by: Kota Yonezawa <Kota.Yonezawa@sony.com>
Signed-off-by: Toshihiko Matsumoto <Toshihiko.Matsumoto@sony.com>
Signed-off-by: Satoshi Watanabe <Satoshi.C.Watanabe@sony.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>
---
 .../devicetree/bindings/media/spi/sony-cxd2880.txt | 14 ++++++++++++++
 1 file changed, 14 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt

diff --git a/Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt b/Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt
new file mode 100644
index 000000000000..fc5aa263abe5
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/spi/sony-cxd2880.txt
@@ -0,0 +1,14 @@
+Sony CXD2880 DVB-T2/T tuner + demodulator driver SPI adapter
+
+Required properties:
+- compatible: Should be "sony,cxd2880".
+- reg: SPI chip select number for the device.
+- spi-max-frequency: Maximum bus speed, should be set to <55000000> (55MHz).
+
+Example:
+
+cxd2880@0 {
+	compatible = "sony,cxd2880";
+	reg = <0>; /* CE0 */
+	spi-max-frequency = <55000000>; /* 55MHz */
+};