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From: Russell King <rmk+kernel@armlinux.org.uk>
To: Gregory Clement <gregory.clement@bootlin.com>,
	Vladimir Vid <vladimir.vid@sartura.hr>
Cc: Jason Cooper <jason@lakedaemon.net>, Andrew Lunn <andrew@lunn.ch>,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>,
	Rob Herring <robh+dt@kernel.org>,
	Mark Rutland <mark.rutland@arm.com>,
	linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org
Subject: [PATCH 2/2] arm64: dts: uDPU: remove i2c-fast-mode
Date: Sat, 16 Nov 2019 11:07:01 +0000	[thread overview]
Message-ID: <E1iVvuv-0002sk-Sw@rmk-PC.armlinux.org.uk> (raw)

The I2C bus violates the timing specifications when run in fast mode
on the uDPU, so switch to 100kHz mode.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts b/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
index e31813a4f972..2ac1d9ae1e25 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
@@ -119,12 +119,14 @@
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c1_pins>;
+	/delete-property/mrvl,i2c-fast-mode;
 };
 
 &i2c1 {
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c2_pins>;
+	/delete-property/mrvl,i2c-fast-mode;
 
 	lm75@48 {
 		status = "okay";
-- 
2.20.1


WARNING: multiple messages have this Message-ID (diff)
From: Russell King <rmk+kernel@armlinux.org.uk>
To: Gregory Clement <gregory.clement@bootlin.com>,
	Vladimir Vid <vladimir.vid@sartura.hr>
Cc: Mark Rutland <mark.rutland@arm.com>, Andrew Lunn <andrew@lunn.ch>,
	Jason Cooper <jason@lakedaemon.net>,
	devicetree@vger.kernel.org, Rob Herring <robh+dt@kernel.org>,
	linux-arm-kernel@lists.infradead.org,
	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>
Subject: [PATCH 2/2] arm64: dts: uDPU: remove i2c-fast-mode
Date: Sat, 16 Nov 2019 11:07:01 +0000	[thread overview]
Message-ID: <E1iVvuv-0002sk-Sw@rmk-PC.armlinux.org.uk> (raw)

The I2C bus violates the timing specifications when run in fast mode
on the uDPU, so switch to 100kHz mode.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
---
 arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts b/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
index e31813a4f972..2ac1d9ae1e25 100644
--- a/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
+++ b/arch/arm64/boot/dts/marvell/armada-3720-uDPU.dts
@@ -119,12 +119,14 @@
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c1_pins>;
+	/delete-property/mrvl,i2c-fast-mode;
 };
 
 &i2c1 {
 	status = "okay";
 	pinctrl-names = "default";
 	pinctrl-0 = <&i2c2_pins>;
+	/delete-property/mrvl,i2c-fast-mode;
 
 	lm75@48 {
 		status = "okay";
-- 
2.20.1


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             reply	other threads:[~2019-11-16 11:07 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-16 11:07 Russell King [this message]
2019-11-16 11:07 ` [PATCH 2/2] arm64: dts: uDPU: remove i2c-fast-mode Russell King
2019-12-09 14:38 ` Gregory CLEMENT
2019-12-09 14:38   ` Gregory CLEMENT

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