[PATCH 1/2] ARM: dts: imx6qdl-sabreauto: Add sensors

[PATCH 1/2] ARM: dts: imx6qdl-sabreauto: Add sensors

[Leonard Crestez]

The following sensors are on I2C3 on the baseboard:
* isil,isl29023 light sensor
* fsl,mag3110 magnetometer
* fsl,mma8451 accelerometer

Added under i2cmux/i2c@1 because they're not otherwise accessible.

These are all supported by iio with following configs:
* CONFIG_SENSORS_ISL29018
* CONFIG_MAG3110
* CONFIG_MMA8452

Tested with raw reads from iio sysfs.

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
 arch/arm/boot/dts/imx6qdl-sabreauto.dtsi | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)

diff --git a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
index 54b0139e978d..a6193240259d 100644
--- a/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-sabreauto.dtsi
@@ -160,10 +160,31 @@
 				compatible = "maxim,max7310";
 				reg = <0x34>;
 				gpio-controller;
 				#gpio-cells = <2>;
 			};
+
+			isl29023@44 {
+				compatible = "isil,isl29023";
+				reg = <0x44>;
+				interrupt-parent = <&gpio5>;
+				interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
+			};
+
+			mag3110@0e {
+				compatible = "fsl,mag3110";
+				reg = <0x0e>;
+				interrupt-parent = <&gpio2>;
+				interrupts = <29 IRQ_TYPE_EDGE_RISING>;
+			};
+
+			mma8451@1c {
+				compatible = "fsl,mma8451";
+				reg = <0x1c>;
+				interrupt-parent = <&gpio6>;
+				interrupts = <31 IRQ_TYPE_LEVEL_LOW>;
+			};
 		};
 	};
 };
 
 &ipu1_csi0_from_ipu1_csi0_mux {
-- 
2.17.1

[PATCH 2/2] imx_v6_v7_defconfig: Enable imx6qdl-sabreauto sensors

[Leonard Crestez]

CONFIG_SENSORS_ISL29018 supports isil,il29023 light sensor
CONFIG_MMA8452 supports fsl,mma8451 accelerometer

CONFIG_MAG3110 for fsl,mag3110 is already enabled

Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>
---
 arch/arm/configs/imx_v6_v7_defconfig | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/configs/imx_v6_v7_defconfig b/arch/arm/configs/imx_v6_v7_defconfig
index 3a308437b088..7efcce8083d2 100644
--- a/arch/arm/configs/imx_v6_v7_defconfig
+++ b/arch/arm/configs/imx_v6_v7_defconfig
@@ -364,12 +364,14 @@ CONFIG_MXS_DMA=y
 CONFIG_STAGING=y
 CONFIG_STAGING_MEDIA=y
 CONFIG_VIDEO_IMX_MEDIA=y
 CONFIG_COMMON_CLK_PWM=y
 CONFIG_IIO=y
+CONFIG_MMA8452=y
 CONFIG_IMX7D_ADC=y
 CONFIG_VF610_ADC=y
+CONFIG_SENSORS_ISL29018=y
 CONFIG_MAG3110=y
 CONFIG_MPL3115=y
 CONFIG_PWM=y
 CONFIG_PWM_FSL_FTM=y
 CONFIG_PWM_IMX=y
-- 
2.17.1

Re: [PATCH 1/2] ARM: dts: imx6qdl-sabreauto: Add sensors

[Fabio Estevam]

Hi Leonard,

On Thu, Jun 7, 2018 at 2:00 PM, Leonard Crestez <leonard.crestez@nxp.com> wrote:

> +
> +                       isl29023@44 {

According to Devicetree Specification v0.2 document:

"The name of a node should be somewhat generic, reflecting the function
of the device and not its precise programming model."

So you could write:

light-sensor@44


> +                               compatible = "isil,isl29023";
> +                               reg = <0x44>;
> +                               interrupt-parent = <&gpio5>;
> +                               interrupts = <17 IRQ_TYPE_EDGE_FALLING>;
> +                       };
> +
> +                       mag3110@0e {

No leading zero in unit address, please.

Building with W=1 will give you warnings about it.

magnetometer@e

> +                               compatible = "fsl,mag3110";
> +                               reg = <0x0e>;
> +                               interrupt-parent = <&gpio2>;
> +                               interrupts = <29 IRQ_TYPE_EDGE_RISING>;
> +                       };
> +
> +                       mma8451@1c {

accelerometer@1c

Re: [PATCH 2/2] imx_v6_v7_defconfig: Enable imx6qdl-sabreauto sensors

[Fabio Estevam]

On Thu, Jun 7, 2018 at 2:00 PM, Leonard Crestez <leonard.crestez@nxp.com> wrote:
> CONFIG_SENSORS_ISL29018 supports isil,il29023 light sensor
> CONFIG_MMA8452 supports fsl,mma8451 accelerometer
>
> CONFIG_MAG3110 for fsl,mag3110 is already enabled
>
> Signed-off-by: Leonard Crestez <leonard.crestez@nxp.com>

Just a minor nit in the Subject. The "ARM" prefix is missing.

Maybe Shawn can adjust it when applying the patch.

Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>

Re: [PATCH 1/2] ARM: dts: imx6qdl-sabreauto: Add sensors

[Leonard Crestez]

On Thu, 2018-06-07 at 14:07 -0300, Fabio Estevam wrote:
> Hi Leonard,
> 
> On Thu, Jun 7, 2018 at 2:00 PM, Leonard Crestez <leonard.crestez@nxp.com> wrote:
> 
> > +
> > +                       isl29023@44 {
> 
> According to Devicetree Specification v0.2 document:
> 
> "The name of a node should be somewhat generic, reflecting the function
> of the device and not its precise programming model."
> 
> So you could write:
> 
> light-sensor@44

Ok, will fix in v2.

Should I also assign a label, like "isl29023: light-sensor@44"? I
couldn't find any recommendation on this.

There are no immediate uses for a label but this practice is very
common. Having labels allows creating minor board variants with reduced
churn in the base dts so it seems good.

--
Regards,
Leonard

Re: [PATCH 1/2] ARM: dts: imx6qdl-sabreauto: Add sensors

[Fabio Estevam]

On Thu, Jun 14, 2018 at 7:17 AM, Leonard Crestez
<leonard.crestez@nxp.com> wrote:

> Should I also assign a label, like "isl29023: light-sensor@44"? I
> couldn't find any recommendation on this.
>
> There are no immediate uses for a label but this practice is very
> common. Having labels allows creating minor board variants with reduced
> churn in the base dts so it seems good.

In the case of this specific board we don't have board variants, so no
need to add a label.