Commit a83aeb38 authored Feb 27, 2018 by Russell King Committed by Gregory CLEMENT Mar 05, 2018

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.

[gregory.clement@bootlin.com: Note that since the commit fbffee74
("ARM: dts: Fix I2C repeated start issue on Armada-38x") in 4.14, the
timing issue is managed for the Armada 38x SoCs.]

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>

parent e662e70f

arch/arm/boot/dts/armada-388-clearfog.dtsi

+2 −5

Original line number	Diff line number	Diff line
		@@ -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 {