mvebu: Add support for kernel 4.14

[openwrt/staging/kaloz.git] / target / linux / mvebu / patches-4.14 / 413-ARM-dts-armada388-clearfog-increase-speed-of-i2c0-to.patch

diff --git a/target/linux/mvebu/patches-4.14/413-ARM-dts-armada388-clearfog-increase-speed-of-i2c0-to.patch b/target/linux/mvebu/patches-4.14/413-ARM-dts-armada388-clearfog-increase-speed-of-i2c0-to.patch
new file mode 100644 (file)
index 0000000..4aedc82
--- /dev/null
+++ b/target/linux/mvebu/patches-4.14/413-ARM-dts-armada388-clearfog-increase-speed-of-i2c0-to.patch
@@ -0,0 +1,42 @@
+From 6e127081e669cf163a818dc04d590790e4ed9527 Mon Sep 17 00:00:00 2001
+From: Russell King <rmk+kernel@armlinux.org.uk>
+Date: Tue, 29 Nov 2016 20:06:44 +0000
+Subject: ARM: dts: armada388-clearfog: increase speed of i2c0 to 400kHz
+
+All the devices on I2C0 support fast mode, so increase the bus speed
+to match.  The Armada 388 is known to have a timing issue when in
+standard mode, which we believe causes the ficticious device at 0x64
+to appear.
+
+Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
+---
+ arch/arm/boot/dts/armada-388-clearfog.dtsi | 7 ++-----
+ 1 file changed, 2 insertions(+), 5 deletions(-)
+
+--- a/arch/arm/boot/dts/armada-388-clearfog.dtsi
++++ b/arch/arm/boot/dts/armada-388-clearfog.dtsi
+@@ -143,8 +143,7 @@
+ };
+ 
+ &i2c0 {
+-      /* Is there anything on this? */
+-      clock-frequency = <100000>;
++      clock-frequency = <400000>;
+       pinctrl-0 = <&i2c0_pins>;
+       pinctrl-names = "default";
+       status = "okay";
+@@ -239,13 +238,11 @@
+               };
+       };
+ 
+-      /* The MCP3021 is 100kHz clock only */
++      /* The MCP3021 supports standard and fast modes */
+       mikrobus_adc: mcp3021@4c {
+               compatible = "microchip,mcp3021";
+               reg = <0x4c>;
+       };
+-
+-      /* Also something at 0x64 */
+ };
+ 
+ &i2c1 {