linux-kernel - [PATCH v4 1/6] ARM: DT: STi: stihxxx-b2120: Add pulse-width properties to ssc2 & ssc3

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Message-Id: <1441104494-10468-2-git-send-email-peter.griffin@linaro.org>
Date:	Tue,  1 Sep 2015 11:48:09 +0100
From:	Peter Griffin <peter.griffin@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	srinivas.kandagatla@...il.com, maxime.coquelin@...com,
	patrice.chotard@...com, mchehab@....samsung.com
Cc:	peter.griffin@...aro.org, lee.jones@...aro.org,
	linux-media@...r.kernel.org, devicetree@...r.kernel.org,
	valentinrothberg@...il.com, hugues.fruchet@...com
Subject: [PATCH v4 1/6] ARM: DT: STi: stihxxx-b2120: Add pulse-width properties to ssc2 & ssc3

Adding these properties makes the I2C bus to the demodulators much
more reliable, and we no longer suffer from I2C errors when tuning.

Signed-off-by: Peter Griffin <peter.griffin@...aro.org>
Acked-by: Lee Jones <lee.jones@...aro.org>
---
 arch/arm/boot/dts/stihxxx-b2120.dtsi | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/arch/arm/boot/dts/stihxxx-b2120.dtsi b/arch/arm/boot/dts/stihxxx-b2120.dtsi
index f589fe4..62994ae 100644
--- a/arch/arm/boot/dts/stihxxx-b2120.dtsi
+++ b/arch/arm/boot/dts/stihxxx-b2120.dtsi
@@ -27,12 +27,18 @@
 			};
 		};
 
-		i2c@...2000 {
+		ssc2: i2c@...2000 {
 			status = "okay";
+			clock-frequency = <100000>;
+			st,i2c-min-scl-pulse-width-us = <0>;
+			st,i2c-min-sda-pulse-width-us = <5>;
 		};
 
-		i2c@...3000 {
+		ssc3: i2c@...3000 {
 			status = "okay";
+			clock-frequency = <100000>;
+			st,i2c-min-scl-pulse-width-us = <0>;
+			st,i2c-min-sda-pulse-width-us = <5>;
 		};
 
 		i2c@...4000 {
-- 
1.9.1

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