diff mbox series

[11/22] ARM: dts: imx6: Add sleep state to can interfaces

Message ID 20190730144649.19022-12-dev@pschenker.ch (mailing list archive)
State New, archived
Headers show
Series This patchset holds some common changes that were never upstreamed. | expand

Commit Message

Philippe Schenker July 30, 2019, 2:46 p.m. UTC 
From: Philippe Schenker <philippe.schenker@toradex.com>

This patch prepares the devicetree for the new Ixora V1.2 where we are
able to turn off the supply of the can transceiver. This implies to use
a sleep state on transmission pins in order to prevent backfeeding.

Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
---

 arch/arm/boot/dts/imx6qdl-apalis.dtsi | 27 +++++++++++++++++++++------
 1 file changed, 21 insertions(+), 6 deletions(-)

Comments

Michal Vokáč July 31, 2019, 7:14 a.m. UTC | #1 
On 30. 07. 19 16:46, Philippe Schenker wrote:
> From: Philippe Schenker <philippe.schenker@toradex.com>
> 
> This patch prepares the devicetree for the new Ixora V1.2 where we are
> able to turn off the supply of the can transceiver. This implies to use
> a sleep state on transmission pins in order to prevent backfeeding.
> 
> Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
> ---

What about "ARM: dts: imx6qdl-apalis: " for the subject?
To be clear that this is not related to the imx6 SoC itself.

> 
>   arch/arm/boot/dts/imx6qdl-apalis.dtsi | 27 +++++++++++++++++++++------
>   1 file changed, 21 insertions(+), 6 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> index 7c4ad541c3f5..59ed2e4a1fd1 100644
> --- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> @@ -148,14 +148,16 @@
>   };
>   
>   &can1 {
> -	pinctrl-names = "default";
> -	pinctrl-0 = <&pinctrl_flexcan1>;
> +	pinctrl-names = "default", "sleep";
> +	pinctrl-0 = <&pinctrl_flexcan1_default>;
> +	pinctrl-1 = <&pinctrl_flexcan1_sleep>;
>   	status = "disabled";
>   };
>   
>   &can2 {
> -	pinctrl-names = "default";
> -	pinctrl-0 = <&pinctrl_flexcan2>;
> +	pinctrl-names = "default", "sleep";
> +	pinctrl-0 = <&pinctrl_flexcan2_default>;
> +	pinctrl-1 = <&pinctrl_flexcan2_sleep>;
>   	status = "disabled";
>   };
>   
> @@ -599,19 +601,32 @@
>   		>;
>   	};
>   
> -	pinctrl_flexcan1: flexcan1grp {
> +	pinctrl_flexcan1_default: flexcan1defgrp {
>   		fsl,pins = <
>   			MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0
>   			MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x1b0b0
>   		>;
>   	};
>   
> -	pinctrl_flexcan2: flexcan2grp {
> +	pinctrl_flexcan1_sleep: flexcan1slpgrp {
> +		fsl,pins = <
> +			MX6QDL_PAD_GPIO_7__GPIO1_IO07 0x0
> +			MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x0
> +		>;
> +	};
> +
> +	pinctrl_flexcan2_default: flexcan2defgrp {
>   		fsl,pins = <
>   			MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0x1b0b0
>   			MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0x1b0b0
>   		>;
>   	};
> +	pinctrl_flexcan2_sleep: flexcan2slpgrp {
> +		fsl,pins = <
> +			MX6QDL_PAD_KEY_COL4__GPIO4_IO14 0x0
> +			MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x0
> +		>;
> +	};
>   
>   	pinctrl_gpio_bl_on: gpioblon {
>   		fsl,pins = <
>
Philippe Schenker July 31, 2019, 11:13 a.m. UTC | #2 
On Wed, 2019-07-31 at 09:14 +0200, Michal Vokáč wrote:
> On 30. 07. 19 16:46, Philippe Schenker wrote:
> > From: Philippe Schenker <philippe.schenker@toradex.com>
> > 
> > This patch prepares the devicetree for the new Ixora V1.2 where we are
> > able to turn off the supply of the can transceiver. This implies to use
> > a sleep state on transmission pins in order to prevent backfeeding.
> > 
> > Signed-off-by: Philippe Schenker <philippe.schenker@toradex.com>
> > ---
> 
> What about "ARM: dts: imx6qdl-apalis: " for the subject?
> To be clear that this is not related to the imx6 SoC itself.

Thanks for your comments Michal! Will takte those into account for v2.

> 
> >   arch/arm/boot/dts/imx6qdl-apalis.dtsi | 27 +++++++++++++++++++++------
> >   1 file changed, 21 insertions(+), 6 deletions(-)
> > 
> > diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> > b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> > index 7c4ad541c3f5..59ed2e4a1fd1 100644
> > --- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> > +++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
> > @@ -148,14 +148,16 @@
> >   };
> >   
> >   &can1 {
> > -	pinctrl-names = "default";
> > -	pinctrl-0 = <&pinctrl_flexcan1>;
> > +	pinctrl-names = "default", "sleep";
> > +	pinctrl-0 = <&pinctrl_flexcan1_default>;
> > +	pinctrl-1 = <&pinctrl_flexcan1_sleep>;
> >   	status = "disabled";
> >   };
> >   
> >   &can2 {
> > -	pinctrl-names = "default";
> > -	pinctrl-0 = <&pinctrl_flexcan2>;
> > +	pinctrl-names = "default", "sleep";
> > +	pinctrl-0 = <&pinctrl_flexcan2_default>;
> > +	pinctrl-1 = <&pinctrl_flexcan2_sleep>;
> >   	status = "disabled";
> >   };
> >   
> > @@ -599,19 +601,32 @@
> >   		>;
> >   	};
> >   
> > -	pinctrl_flexcan1: flexcan1grp {
> > +	pinctrl_flexcan1_default: flexcan1defgrp {
> >   		fsl,pins = <
> >   			MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0
> >   			MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x1b0b0
> >   		>;
> >   	};
> >   
> > -	pinctrl_flexcan2: flexcan2grp {
> > +	pinctrl_flexcan1_sleep: flexcan1slpgrp {
> > +		fsl,pins = <
> > +			MX6QDL_PAD_GPIO_7__GPIO1_IO07 0x0
> > +			MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x0
> > +		>;
> > +	};
> > +
> > +	pinctrl_flexcan2_default: flexcan2defgrp {
> >   		fsl,pins = <
> >   			MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0x1b0b0
> >   			MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0x1b0b0
> >   		>;
> >   	};
> > +	pinctrl_flexcan2_sleep: flexcan2slpgrp {
> > +		fsl,pins = <
> > +			MX6QDL_PAD_KEY_COL4__GPIO4_IO14 0x0
> > +			MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x0
> > +		>;
> > +	};
> >   
> >   	pinctrl_gpio_bl_on: gpioblon {
> >   		fsl,pins = <
> >
diff mbox series

Patch

diff --git a/arch/arm/boot/dts/imx6qdl-apalis.dtsi b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
index 7c4ad541c3f5..59ed2e4a1fd1 100644
--- a/arch/arm/boot/dts/imx6qdl-apalis.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-apalis.dtsi
@@ -148,14 +148,16 @@ 
 };
 
 &can1 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_flexcan1>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&pinctrl_flexcan1_default>;
+	pinctrl-1 = <&pinctrl_flexcan1_sleep>;
 	status = "disabled";
 };
 
 &can2 {
-	pinctrl-names = "default";
-	pinctrl-0 = <&pinctrl_flexcan2>;
+	pinctrl-names = "default", "sleep";
+	pinctrl-0 = <&pinctrl_flexcan2_default>;
+	pinctrl-1 = <&pinctrl_flexcan2_sleep>;
 	status = "disabled";
 };
 
@@ -599,19 +601,32 @@ 
 		>;
 	};
 
-	pinctrl_flexcan1: flexcan1grp {
+	pinctrl_flexcan1_default: flexcan1defgrp {
 		fsl,pins = <
 			MX6QDL_PAD_GPIO_7__FLEXCAN1_TX 0x1b0b0
 			MX6QDL_PAD_GPIO_8__FLEXCAN1_RX 0x1b0b0
 		>;
 	};
 
-	pinctrl_flexcan2: flexcan2grp {
+	pinctrl_flexcan1_sleep: flexcan1slpgrp {
+		fsl,pins = <
+			MX6QDL_PAD_GPIO_7__GPIO1_IO07 0x0
+			MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x0
+		>;
+	};
+
+	pinctrl_flexcan2_default: flexcan2defgrp {
 		fsl,pins = <
 			MX6QDL_PAD_KEY_COL4__FLEXCAN2_TX 0x1b0b0
 			MX6QDL_PAD_KEY_ROW4__FLEXCAN2_RX 0x1b0b0
 		>;
 	};
+	pinctrl_flexcan2_sleep: flexcan2slpgrp {
+		fsl,pins = <
+			MX6QDL_PAD_KEY_COL4__GPIO4_IO14 0x0
+			MX6QDL_PAD_KEY_ROW4__GPIO4_IO15 0x0
+		>;
+	};
 
 	pinctrl_gpio_bl_on: gpioblon {
 		fsl,pins = <