* [PATCH v2] ARM: dts: at91: sama5d27_som1_ek: add i2c filters properties
@ 2019-12-05 7:43 Eugen.Hristev
2019-12-05 9:44 ` Alexandre Belloni
0 siblings, 1 reply; 2+ messages in thread
From: Eugen.Hristev @ 2019-12-05 7:43 UTC (permalink / raw)
To: alexandre.belloni
Cc: Ludovic.Desroches, robh+dt, linux-arm-kernel, devicetree,
linux-kernel, Eugen.Hristev
From: Eugen Hristev <eugen.hristev@microchip.com>
Add properties for i2c filters for i2c0 and i2c1 on sama5d27_som1_ek.
Noise is affecting communication on i2c for example when connecting i2c
camera sensors.
Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
---
Changes in v2:
- properties were at the wrong node for i2c0, need to be at the i2c node
not the parent flexcom
arch/arm/boot/dts/at91-sama5d27_som1_ek.dts | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
index fca5716..b0853bf 100644
--- a/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
+++ b/arch/arm/boot/dts/at91-sama5d27_som1_ek.dts
@@ -131,6 +131,9 @@
interrupts = <20 IRQ_TYPE_LEVEL_HIGH 7>;
dmas = <0>, <0>;
dma-names = "tx", "rx";
+ i2c-analog-filter;
+ i2c-digital-filter;
+ i2c-digital-filter-width-ns = <35>;
#address-cells = <1>;
#size-cells = <0>;
clocks = <&pmc PMC_TYPE_PERIPHERAL 20>;
@@ -246,6 +249,9 @@
i2c1: i2c@fc028000 {
dmas = <0>, <0>;
+ i2c-analog-filter;
+ i2c-digital-filter;
+ i2c-digital-filter-width-ns = <35>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c1_default>;
status = "okay";
--
2.7.4
^ permalink raw reply related [flat|nested] 2+ messages in thread* Re: [PATCH v2] ARM: dts: at91: sama5d27_som1_ek: add i2c filters properties
2019-12-05 7:43 [PATCH v2] ARM: dts: at91: sama5d27_som1_ek: add i2c filters properties Eugen.Hristev
@ 2019-12-05 9:44 ` Alexandre Belloni
0 siblings, 0 replies; 2+ messages in thread
From: Alexandre Belloni @ 2019-12-05 9:44 UTC (permalink / raw)
To: Eugen.Hristev
Cc: Ludovic.Desroches, robh+dt, linux-arm-kernel, devicetree,
linux-kernel
On 05/12/2019 07:43:59+0000, Eugen.Hristev@microchip.com wrote:
> From: Eugen Hristev <eugen.hristev@microchip.com>
>
> Add properties for i2c filters for i2c0 and i2c1 on sama5d27_som1_ek.
> Noise is affecting communication on i2c for example when connecting i2c
> camera sensors.
>
> Signed-off-by: Eugen Hristev <eugen.hristev@microchip.com>
> ---
>
> Changes in v2:
> - properties were at the wrong node for i2c0, need to be at the i2c node
> not the parent flexcom
>
> arch/arm/boot/dts/at91-sama5d27_som1_ek.dts | 6 ++++++
> 1 file changed, 6 insertions(+)
>
Applied, thanks.
--
Alexandre Belloni, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com
^ permalink raw reply [flat|nested] 2+ messages in thread
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2019-12-05 9:44 ` Alexandre Belloni
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