[PATCH v2 1/5] ARM: DT: STi: stihxxx-b2120: Add pulse-width properties to ssc2 & ssc3

Peter Griffin peter.griffin at linaro.org
Thu Aug 27 05:29:31 PDT 2015


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 at linaro.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 at 9842000 {
+		ssc2: i2c at 9842000 {
 			status = "okay";
+			clock-frequency = <100000>;
+			st,i2c-min-scl-pulse-width-us = <0>;
+			st,i2c-min-sda-pulse-width-us = <5>;
 		};
 
-		i2c at 9843000 {
+		ssc3: i2c at 9843000 {
 			status = "okay";
+			clock-frequency = <100000>;
+			st,i2c-min-scl-pulse-width-us = <0>;
+			st,i2c-min-sda-pulse-width-us = <5>;
 		};
 
 		i2c at 9844000 {
-- 
1.9.1




More information about the linux-arm-kernel mailing list