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