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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 fbffee7498
("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>
This commit is contained in:
Russell King 2018-02-27 16:01:57 +00:00 committed by Gregory CLEMENT
parent e662e70fa4
commit a83aeb3836
1 changed files with 2 additions and 5 deletions
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7
arch/arm/boot/dts/armada-388-clearfog.dtsi
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@ -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 {