[RFC PATCH] ARM: dts: imx: replace underscore with hyphen in aliases name

[RFC PATCH] ARM: dts: imx: replace underscore with hyphen in aliases name

[Shawn Guo]

It replaces underscore with hyphen in aliases name to fix DTC
alias_paths warning below, which is seen with various i.MX board dts
files when W=1 switch is on.

 Warning (alias_paths): /aliases: aliases property name must include only lowercase and '-'

Cc: Lothar Waßmann <LW@KARO-electronics.de>
Cc: Gary Bisson <gary.bisson@boundarydevices.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---
Hi Lothar, Gary,

Per my search on kernel code, this change will not break anything on
kernel support.  But I'm not really sure about the case of bootloaders
running on the boards.  That's why I'm sending it as RFC.

We really want i.MX to be the first-class citizen in the community.
After a few cycles efforts on cleaning up DTC warnings, this alias_paths
warning is the last one we see with i.MX dts files.  We really want to
get rid of it and make i.MX dts be DTC warning free.

So please comment whether we can merge this patch.

Shawn

 arch/arm/boot/dts/imx53-tx53.dtsi            | 2 +-
 arch/arm/boot/dts/imx6qdl-tx6.dtsi           | 6 +++---
 arch/arm/boot/dts/imx6sx-nitrogen6sx.dts     | 4 ++--
 arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts | 2 +-
 arch/arm/boot/dts/imx6ul-tx6ul.dtsi          | 6 +++---
 arch/arm/boot/dts/imx7d-nitrogen7.dts        | 4 ++--
 6 files changed, 12 insertions(+), 12 deletions(-)

diff --git a/arch/arm/boot/dts/imx53-tx53.dtsi b/arch/arm/boot/dts/imx53-tx53.dtsi
index 5dd3dd3a2fd0..54cf3e67069a 100644
--- a/arch/arm/boot/dts/imx53-tx53.dtsi
+++ b/arch/arm/boot/dts/imx53-tx53.dtsi
@@ -58,7 +58,7 @@
 		can0 = &can2; /* Make the can interface indices consistent with TX28/TX48 modules */
 		can1 = &can1;
 		ipu = &ipu;
-		reg_can_xcvr = &reg_can_xcvr;
+		reg-can-xcvr = &reg_can_xcvr;
 		usbh1 = &usbh1;
 		usbotg = &usbotg;
 	};
diff --git a/arch/arm/boot/dts/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
index f015e2d1cf35..a98fb2564c63 100644
--- a/arch/arm/boot/dts/imx6qdl-tx6.dtsi
+++ b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
@@ -50,11 +50,11 @@
 		can0 = &can2;
 		can1 = &can1;
 		ethernet0 = &fec;
-		lcdif_23bit_pins_a = &pinctrl_disp0_1;
-		lcdif_24bit_pins_a = &pinctrl_disp0_2;
+		lcdif-23bit-pins-a = &pinctrl_disp0_1;
+		lcdif-24bit-pins-a = &pinctrl_disp0_2;
 		pwm0 = &pwm1;
 		pwm1 = &pwm2;
-		reg_can_xcvr = &reg_can_xcvr;
+		reg-can-xcvr = &reg_can_xcvr;
 		stk5led = &user_led;
 		usbotg = &usbotg;
 		sdhc0 = &usdhc1;
diff --git a/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts b/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts
index b58f770c40d9..59e52f504922 100644
--- a/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts
+++ b/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts
@@ -48,8 +48,8 @@
 	compatible = "boundary,imx6sx-nitrogen6sx", "fsl,imx6sx";
 
 	aliases {
-		fb_lcd = &lcdif1;
-		t_lcd = &t_lcd;
+		fb-lcd = &lcdif1;
+		t-lcd = &t_lcd;
 	};
 
 	memory@80000000 {
diff --git a/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts b/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts
index 2d80f7b50bc0..97686097a86e 100644
--- a/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts
+++ b/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts
@@ -48,7 +48,7 @@
 	compatible = "karo,imx6ul-tx6ul", "fsl,imx6ul";
 
 	aliases {
-		lcdif_24bit_pins_a = &pinctrl_disp0_3;
+		lcdif-24bit-pins-a = &pinctrl_disp0_3;
 		mmc0 = &usdhc1;
 		/delete-property/ mmc1;
 		serial2 = &uart3;
diff --git a/arch/arm/boot/dts/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/imx6ul-tx6ul.dtsi
index f678d18ad44a..02b5ba42cd59 100644
--- a/arch/arm/boot/dts/imx6ul-tx6ul.dtsi
+++ b/arch/arm/boot/dts/imx6ul-tx6ul.dtsi
@@ -53,10 +53,10 @@
 		i2c2 = &i2c1;
 		i2c3 = &i2c3;
 		i2c4 = &i2c4;
-		lcdif_23bit_pins_a = &pinctrl_disp0_1;
-		lcdif_24bit_pins_a = &pinctrl_disp0_2;
+		lcdif-23bit-pins-a = &pinctrl_disp0_1;
+		lcdif-24bit-pins-a = &pinctrl_disp0_2;
 		pwm0 = &pwm5;
-		reg_can_xcvr = &reg_can_xcvr;
+		reg-can-xcvr = &reg_can_xcvr;
 		serial2 = &uart5;
 		serial4 = &uart3;
 		spi0 = &ecspi2;
diff --git a/arch/arm/boot/dts/imx7d-nitrogen7.dts b/arch/arm/boot/dts/imx7d-nitrogen7.dts
index 52167298984d..b8e73b46cddb 100644
--- a/arch/arm/boot/dts/imx7d-nitrogen7.dts
+++ b/arch/arm/boot/dts/imx7d-nitrogen7.dts
@@ -49,8 +49,8 @@
 	compatible = "boundary,imx7d-nitrogen7", "fsl,imx7d";
 
 	aliases {
-		fb_lcd = &lcdif;
-		t_lcd = &t_lcd;
+		fb-lcd = &lcdif;
+		t-lcd = &t_lcd;
 	};
 
 	memory@80000000 {
-- 
1.9.1


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Re: [RFC PATCH] ARM: dts: imx: replace underscore with hyphen in aliases name

[Lothar Waßmann]

Hi,

On Fri,  4 May 2018 09:58:48 +0800 Shawn Guo wrote:
> It replaces underscore with hyphen in aliases name to fix DTC
> alias_paths warning below, which is seen with various i.MX board dts
> files when W=1 switch is on.
> 
>  Warning (alias_paths): /aliases: aliases property name must include only lowercase and '-'
> 
> Cc: Lothar Waßmann <LW@KARO-electronics.de>
> Cc: Gary Bisson <gary.bisson@boundarydevices.com>
> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> ---
> Hi Lothar, Gary,
> 
> Per my search on kernel code, this change will not break anything on
> kernel support.  But I'm not really sure about the case of bootloaders
> running on the boards.  That's why I'm sending it as RFC.
> 
> We really want i.MX to be the first-class citizen in the community.
> After a few cycles efforts on cleaning up DTC warnings, this alias_paths
> warning is the last one we see with i.MX dts files.  We really want to
> get rid of it and make i.MX dts be DTC warning free.
> 
> So please comment whether we can merge this patch.
> 
This breaks our U-Boot which searches for the alias names with '_'.
But I think it's not worth keeping the old names alive, since the
problem can easily be fixed by adding the old alias name to the FDT
on affected boards from within U-Boot, if necessary.

Alternatively we could add a:
	reg_can_xcvr = "reg-can-xcvr";
[...]
so that the respective aliases can be resolved using both names for a
while.

So:
Acked-By: Lothar Waßmann <LW@KARO-electronics.de>

> Shawn
> 
>  arch/arm/boot/dts/imx53-tx53.dtsi            | 2 +-
>  arch/arm/boot/dts/imx6qdl-tx6.dtsi           | 6 +++---
>  arch/arm/boot/dts/imx6sx-nitrogen6sx.dts     | 4 ++--
>  arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts | 2 +-
>  arch/arm/boot/dts/imx6ul-tx6ul.dtsi          | 6 +++---
>  arch/arm/boot/dts/imx7d-nitrogen7.dts        | 4 ++--
>  6 files changed, 12 insertions(+), 12 deletions(-)
> 
> diff --git a/arch/arm/boot/dts/imx53-tx53.dtsi b/arch/arm/boot/dts/imx53-tx53.dtsi
> index 5dd3dd3a2fd0..54cf3e67069a 100644
> --- a/arch/arm/boot/dts/imx53-tx53.dtsi
> +++ b/arch/arm/boot/dts/imx53-tx53.dtsi
> @@ -58,7 +58,7 @@
>  		can0 = &can2; /* Make the can interface indices consistent with TX28/TX48 modules */
>  		can1 = &can1;
>  		ipu = &ipu;
> -		reg_can_xcvr = &reg_can_xcvr;
> +		reg-can-xcvr = &reg_can_xcvr;
>  		usbh1 = &usbh1;
>  		usbotg = &usbotg;
>  	};
> diff --git a/arch/arm/boot/dts/imx6qdl-tx6.dtsi b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
> index f015e2d1cf35..a98fb2564c63 100644
> --- a/arch/arm/boot/dts/imx6qdl-tx6.dtsi
> +++ b/arch/arm/boot/dts/imx6qdl-tx6.dtsi
> @@ -50,11 +50,11 @@
>  		can0 = &can2;
>  		can1 = &can1;
>  		ethernet0 = &fec;
> -		lcdif_23bit_pins_a = &pinctrl_disp0_1;
> -		lcdif_24bit_pins_a = &pinctrl_disp0_2;
> +		lcdif-23bit-pins-a = &pinctrl_disp0_1;
> +		lcdif-24bit-pins-a = &pinctrl_disp0_2;
>  		pwm0 = &pwm1;
>  		pwm1 = &pwm2;
> -		reg_can_xcvr = &reg_can_xcvr;
> +		reg-can-xcvr = &reg_can_xcvr;
>  		stk5led = &user_led;
>  		usbotg = &usbotg;
>  		sdhc0 = &usdhc1;
> diff --git a/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts b/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts
> index b58f770c40d9..59e52f504922 100644
> --- a/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts
> +++ b/arch/arm/boot/dts/imx6sx-nitrogen6sx.dts
> @@ -48,8 +48,8 @@
>  	compatible = "boundary,imx6sx-nitrogen6sx", "fsl,imx6sx";
>  
>  	aliases {
> -		fb_lcd = &lcdif1;
> -		t_lcd = &t_lcd;
> +		fb-lcd = &lcdif1;
> +		t-lcd = &t_lcd;
>  	};
>  
>  	memory@80000000 {
> diff --git a/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts b/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts
> index 2d80f7b50bc0..97686097a86e 100644
> --- a/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts
> +++ b/arch/arm/boot/dts/imx6ul-tx6ul-mainboard.dts
> @@ -48,7 +48,7 @@
>  	compatible = "karo,imx6ul-tx6ul", "fsl,imx6ul";
>  
>  	aliases {
> -		lcdif_24bit_pins_a = &pinctrl_disp0_3;
> +		lcdif-24bit-pins-a = &pinctrl_disp0_3;
>  		mmc0 = &usdhc1;
>  		/delete-property/ mmc1;
>  		serial2 = &uart3;
> diff --git a/arch/arm/boot/dts/imx6ul-tx6ul.dtsi b/arch/arm/boot/dts/imx6ul-tx6ul.dtsi
> index f678d18ad44a..02b5ba42cd59 100644
> --- a/arch/arm/boot/dts/imx6ul-tx6ul.dtsi
> +++ b/arch/arm/boot/dts/imx6ul-tx6ul.dtsi
> @@ -53,10 +53,10 @@
>  		i2c2 = &i2c1;
>  		i2c3 = &i2c3;
>  		i2c4 = &i2c4;
> -		lcdif_23bit_pins_a = &pinctrl_disp0_1;
> -		lcdif_24bit_pins_a = &pinctrl_disp0_2;
> +		lcdif-23bit-pins-a = &pinctrl_disp0_1;
> +		lcdif-24bit-pins-a = &pinctrl_disp0_2;
>  		pwm0 = &pwm5;
> -		reg_can_xcvr = &reg_can_xcvr;
> +		reg-can-xcvr = &reg_can_xcvr;
>  		serial2 = &uart5;
>  		serial4 = &uart3;
>  		spi0 = &ecspi2;
> diff --git a/arch/arm/boot/dts/imx7d-nitrogen7.dts b/arch/arm/boot/dts/imx7d-nitrogen7.dts
> index 52167298984d..b8e73b46cddb 100644
> --- a/arch/arm/boot/dts/imx7d-nitrogen7.dts
> +++ b/arch/arm/boot/dts/imx7d-nitrogen7.dts
> @@ -49,8 +49,8 @@
>  	compatible = "boundary,imx7d-nitrogen7", "fsl,imx7d";
>  
>  	aliases {
> -		fb_lcd = &lcdif;
> -		t_lcd = &t_lcd;
> +		fb-lcd = &lcdif;
> +		t-lcd = &t_lcd;
>  	};
>  
>  	memory@80000000 {


Lothar Waßmann

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Re: [RFC PATCH] ARM: dts: imx: replace underscore with hyphen in aliases name

[Shawn Guo]

On Fri, May 04, 2018 at 08:52:48AM +0200, Lothar Waßmann wrote:
> Hi,
> 
> On Fri,  4 May 2018 09:58:48 +0800 Shawn Guo wrote:
> > It replaces underscore with hyphen in aliases name to fix DTC
> > alias_paths warning below, which is seen with various i.MX board dts
> > files when W=1 switch is on.
> > 
> >  Warning (alias_paths): /aliases: aliases property name must include only lowercase and '-'
> > 
> > Cc: Lothar Waßmann <LW@KARO-electronics.de>
> > Cc: Gary Bisson <gary.bisson@boundarydevices.com>
> > Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> > ---
> > Hi Lothar, Gary,
> > 
> > Per my search on kernel code, this change will not break anything on
> > kernel support.  But I'm not really sure about the case of bootloaders
> > running on the boards.  That's why I'm sending it as RFC.
> > 
> > We really want i.MX to be the first-class citizen in the community.
> > After a few cycles efforts on cleaning up DTC warnings, this alias_paths
> > warning is the last one we see with i.MX dts files.  We really want to
> > get rid of it and make i.MX dts be DTC warning free.
> > 
> > So please comment whether we can merge this patch.
> > 
> This breaks our U-Boot which searches for the alias names with '_'.
> But I think it's not worth keeping the old names alive, since the
> problem can easily be fixed by adding the old alias name to the FDT
> on affected boards from within U-Boot, if necessary.
> 
> Alternatively we could add a:
> 	reg_can_xcvr = "reg-can-xcvr";
> [...]
> so that the respective aliases can be resolved using both names for a
> while.

Appreciate it.

> 
> So:
> Acked-By: Lothar Waßmann <LW@KARO-electronics.de>

Thanks, Lothar.

Shawn

Re: [RFC PATCH] ARM: dts: imx: replace underscore with hyphen in aliases name

[Gary Bisson]

Hi Shawn,

On Fri, May 04, 2018 at 09:58:48AM +0800, Shawn Guo wrote:
> It replaces underscore with hyphen in aliases name to fix DTC
> alias_paths warning below, which is seen with various i.MX board dts
> files when W=1 switch is on.
> 
>  Warning (alias_paths): /aliases: aliases property name must include only lowercase and '-'
> 
> Cc: Lothar Waßmann <LW@KARO-electronics.de>
> Cc: Gary Bisson <gary.bisson@boundarydevices.com>
> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> ---
> Hi Lothar, Gary,
> 
> Per my search on kernel code, this change will not break anything on
> kernel support.  But I'm not really sure about the case of bootloaders
> running on the boards.  That's why I'm sending it as RFC.
> 
> We really want i.MX to be the first-class citizen in the community.
> After a few cycles efforts on cleaning up DTC warnings, this alias_paths
> warning is the last one we see with i.MX dts files.  We really want to
> get rid of it and make i.MX dts be DTC warning free.
> 
> So please comment whether we can merge this patch.

Yes that is fine.
Reviewed-by: Gary Bisson <gary.bisson@boundarydevices.com>

Thanks,
Gary

Re: [RFC PATCH] ARM: dts: imx: replace underscore with hyphen in aliases name

[Shawn Guo]

On Fri, May 04, 2018 at 09:40:25AM +0200, Gary Bisson wrote:
> Hi Shawn,
> 
> On Fri, May 04, 2018 at 09:58:48AM +0800, Shawn Guo wrote:
> > It replaces underscore with hyphen in aliases name to fix DTC
> > alias_paths warning below, which is seen with various i.MX board dts
> > files when W=1 switch is on.
> > 
> >  Warning (alias_paths): /aliases: aliases property name must include only lowercase and '-'
> > 
> > Cc: Lothar Waßmann <LW@KARO-electronics.de>
> > Cc: Gary Bisson <gary.bisson@boundarydevices.com>
> > Signed-off-by: Shawn Guo <shawnguo@kernel.org>
> > ---
> > Hi Lothar, Gary,
> > 
> > Per my search on kernel code, this change will not break anything on
> > kernel support.  But I'm not really sure about the case of bootloaders
> > running on the boards.  That's why I'm sending it as RFC.
> > 
> > We really want i.MX to be the first-class citizen in the community.
> > After a few cycles efforts on cleaning up DTC warnings, this alias_paths
> > warning is the last one we see with i.MX dts files.  We really want to
> > get rid of it and make i.MX dts be DTC warning free.
> > 
> > So please comment whether we can merge this patch.
> 
> Yes that is fine.
> Reviewed-by: Gary Bisson <gary.bisson@boundarydevices.com>

Thanks, Gary.

Shawn