brcm2708: switch to linux 4.4 and update patches

[openwrt/svn-archive/archive.git] / target / linux / brcm2708 / patches-4.4 / 0156-BCM270X_DT-at86rf233-overlay-drop-to-3MHz.patch

diff --git a/target/linux/brcm2708/patches-4.4/0156-BCM270X_DT-at86rf233-overlay-drop-to-3MHz.patch b/target/linux/brcm2708/patches-4.4/0156-BCM270X_DT-at86rf233-overlay-drop-to-3MHz.patch
new file mode 100644 (file)
index 0000000..7df9187
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0156-BCM270X_DT-at86rf233-overlay-drop-to-3MHz.patch
@@ -0,0 +1,36 @@
+From 8941fe4985a1cc8f800be00224c6a2e741789d03 Mon Sep 17 00:00:00 2001
+From: Phil Elwell <phil@raspberrypi.org>
+Date: Thu, 18 Feb 2016 15:28:14 +0000
+Subject: [PATCH 156/156] BCM270X_DT: at86rf233 overlay - drop to 3MHz
+
+The consensus is that 6MHz is too fast, but that 3MHz is OK.
+
+See: https://github.com/raspberrypi/linux/issues/1294
+     https://github.com/raspberrypi/linux/issues/1151
+---
+ arch/arm/boot/dts/overlays/README                | 2 +-
+ arch/arm/boot/dts/overlays/at86rf233-overlay.dts | 2 +-
+ 2 files changed, 2 insertions(+), 2 deletions(-)
+
+--- a/arch/arm/boot/dts/overlays/README
++++ b/arch/arm/boot/dts/overlays/README
+@@ -188,7 +188,7 @@ Load:   dtoverlay=at86rf233,<param>=<val
+ Params: interrupt               GPIO used for INT (default 23)
+         reset                   GPIO used for Reset (default 24)
+         sleep                   GPIO used for Sleep (default 25)
+-        speed                   SPI bus speed in Hz (default 6000000)
++        speed                   SPI bus speed in Hz (default 3000000)
+         trim                    Fine tuning of the internal capacitance
+                                 arrays (0=+0pF, 15=+4.5pF, default 15)
+ 
+--- a/arch/arm/boot/dts/overlays/at86rf233-overlay.dts
++++ b/arch/arm/boot/dts/overlays/at86rf233-overlay.dts
+@@ -25,7 +25,7 @@
+                               interrupts = <23 4>; /* active high */
+                               reset-gpio = <&gpio 24 1>;
+                               sleep-gpio = <&gpio 25 1>;
+-                              spi-max-frequency = <6000000>;
++                              spi-max-frequency = <3000000>;
+                               xtal-trim = /bits/ 8 <0xf>;
+                       };
+               };