[PATCH 1/2] ARM: dts: armada388-clearfog: increase speed of i2c0 to 400kHz
From: Russell King <hidden>
Date: 2018-02-27 16:01:57
Also in:
linux-devicetree
Subsystem:
the rest · Maintainer:
Linus Torvalds
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 <redacted> --- arch/arm/boot/dts/armada-388-clearfog.dtsi | 7 ++----- 1 file changed, 2 insertions(+), 5 deletions(-)
diff --git a/arch/arm/boot/dts/armada-388-clearfog.dtsi b/arch/arm/boot/dts/armada-388-clearfog.dtsi
index 68acfc968706..0e3b1f140e6d 100644
--- 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 at 4c { compatible = "microchip,mcp3021"; reg = <0x4c>; }; - - /* Also something at 0x64 */ }; &i2c1 {
--
2.7.4