[PATCH 0/2] ARM: dts: OMAP: standardize SoC specific bindings

[PATCH 0/2] ARM: dts: OMAP: standardize SoC specific bindings

[Nishanth Menon]

This is a respin of [1] based on of Olof's comments to introduce a
generic SoC binding. This standardizes the binding definitions for
SoCs based on existing "implied" bindings and based on existing usage
in arch/arm/mach-omap2/soc.h. Eventually we should be able to get rid
of soc_is_xyz() functions and allow machine descriptors to seamlessly
handle the deltas.

The series is based on [2] and was triggered primarily due to the bug
seen with [3] - clock dts conversion.

Nishanth Menon (2):
  Documentation: dt: OMAP: standardize SoC naming definition
  ARM: dts: omap3-beagle: use 3630 definitions

 .../devicetree/bindings/arm/omap/omap.txt          |   45 ++++++++++++++++++++
 arch/arm/boot/dts/omap3-beagle-xm.dts              |    2 +-
 arch/arm/mach-omap2/board-generic.c                |   23 ++++++++++
 3 files changed, 69 insertions(+), 1 deletion(-)

[1] https://patchwork.kernel.org/patch/2919661/
[2] https://git.kernel.org/cgit/linux/kernel/git/bcousson/linux-omap-dt.git/log/?h=for_3.13/dts
[3] http://marc.info/?t=138009899400001&r=1&w=2
-- 
1.7.9.5

[PATCH 1/2] Documentation: dt: OMAP: standardize SoC naming definition

[Nishanth Menon]

SoC family definitions at the moment are reactive to board needs
as a result, beagle-xm would matchup with ti,omap3 which invokes
omap3430_init_early instead of omap3630_init_early. Obviously, this is
the wrong behavior.

Eventually, we will have descriptors match only with SoC types and
should not contain anything specific to board handling.

Signed-off-by: Nishanth Menon <nm@ti.com>
---
 .../devicetree/bindings/arm/omap/omap.txt          |   45 ++++++++++++++++++++
 arch/arm/mach-omap2/board-generic.c                |   23 ++++++++++
 2 files changed, 68 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/omap/omap.txt b/Documentation/devicetree/bindings/arm/omap/omap.txt
index 91b7049..28b20a2 100644
--- a/Documentation/devicetree/bindings/arm/omap/omap.txt
+++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
@@ -30,6 +30,51 @@ spinlock@1 {
     ti,hwmods = "spinlock";
 };
 
+SoC Type(optional):
+- ti,gp	- General Purpose devices
+- ti,hs	- High Security devices
+
+SoC Families:
+
+- OMAP2 generic - defaults to OMAP2420
+  compatible = "ti,omap2"
+- OMAP3 generic - defaults to OMAP3430
+  compatible = "ti,omap3"
+- OMAP4 generic - defaults to OMAP4430
+  compatible = "ti,omap4"
+- OMAP5 generic - defaults to OMAP5430
+  compatible = "ti,omap5"
+- DRA7 generic - defaults to DRA742
+  compatible = "ti,dra7"
+- AM43x generic - defaults to AM437x
+  compatible = "ti,am43"
+
+SoCs:
+
+- OMAP2420
+  compatible = "ti,omap2420", "ti,omap2"
+- OMAP2430
+  compatible = "ti,omap2430", "ti,omap2"
+
+- OMAP3430
+  compatible = "ti,omap343x", "ti,omap3"
+- OMAP3630
+  compatible = "ti,omap363x", "ti,omap3"
+- AM33xx
+  compatible = "ti,am33xx", "ti,omap3"
+
+- OMAP4430
+  compatible = "ti,omap443x", "ti,omap4"
+- OMAP4460
+  compatible = "ti,omap446x", "ti,omap4"
+
+- OMAP5430
+  compatible = "ti,omap5430", "ti,omap5"
+- OMAP5432
+  compatible = "ti,omap5432", "ti,omap5"
+
+- DRA742
+  compatible = "ti,dra7xx", "ti,dra7"
 
 Boards:
 
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 39c7838..c78b070 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -113,6 +113,7 @@ MACHINE_END
 #ifdef CONFIG_ARCH_OMAP3
 static const char *omap3_boards_compat[] __initdata = {
 	"ti,omap3",
+	"ti,omap343x",
 	NULL,
 };
 
@@ -129,6 +130,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
 	.restart	= omap3xxx_restart,
 MACHINE_END
 
+static const char *omap36xx_boards_compat[] __initdata = {
+	"ti,omap363x",
+	NULL,
+};
+
+DT_MACHINE_START(OMAP36xx_DT, "Generic OMAP363x (Flattened Device Tree)")
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap3630_init_early,
+	.init_irq	= omap_intc_of_init,
+	.handle_irq	= omap3_intc_handle_irq,
+	.init_machine	= omap_generic_init,
+	.init_late	= omap3_init_late,
+	.init_time	= omap3_sync32k_timer_init,
+	.dt_compat	= omap36xx_boards_compat,
+	.restart	= omap3xxx_restart,
+MACHINE_END
+
 static const char *omap3_gp_boards_compat[] __initdata = {
 	"ti,omap3-beagle",
 	"timll,omap3-devkit8000",
@@ -171,6 +190,8 @@ MACHINE_END
 #ifdef CONFIG_ARCH_OMAP4
 static const char *omap4_boards_compat[] __initdata = {
 	"ti,omap4",
+	"ti,omap4430",
+	"ti,omap4460",
 	NULL,
 };
 
@@ -191,6 +212,8 @@ MACHINE_END
 #ifdef CONFIG_SOC_OMAP5
 static const char *omap5_boards_compat[] __initdata = {
 	"ti,omap5",
+	"ti,omap5430",
+	"ti,omap5432",
 	NULL,
 };
 
-- 
1.7.9.5

Re: [PATCH 1/2] Documentation: dt: OMAP: standardize SoC naming definition

[Tony Lindgren]

Hi,

Few comments below.

* Nishanth Menon <nm@ti.com> [131007 09:57]:
> SoC family definitions at the moment are reactive to board needs
> as a result, beagle-xm would matchup with ti,omap3 which invokes
> omap3430_init_early instead of omap3630_init_early. Obviously, this is
> the wrong behavior.

It seems that we should try to queue this as a fix to avoid
debugging it multiple times as it's actually quite easy to hit this
one.

So maybe use a subject along lines of:

"ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree"

And also include these warnings you can get:

omap_hwmod: uart4: cannot clk_get main_clk uart4_fck
omap_hwmod: uart4: cannot _init_clocks

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434 _init+0x6c/0x80()
omap_hwmod: uart4: couldn't init clocks
...

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280()
omap_hwmod: timer12: enabled state can only be entered from initialized, idle, or disabled state
...

WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224 _idle+0xd4/0xf8()
omap_hwmod: timer12: idle state can only be entered from enabled state

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126 _enable+0x254/0x280()
omap_hwmod: uart4: enabled state can only be entered from initialized, idle, or disabled state

And also describe that the outcome is that the system fails to boot.
 
> --- a/Documentation/devicetree/bindings/arm/omap/omap.txt
> +++ b/Documentation/devicetree/bindings/arm/omap/omap.txt
> @@ -30,6 +30,51 @@ spinlock@1 {
>      ti,hwmods = "spinlock";
>  };
>  
> +SoC Type(optional):
> +- ti,gp	- General Purpose devices
> +- ti,hs	- High Security devices
> +
> +SoC Families:
> +
> +- OMAP2 generic - defaults to OMAP2420
> +  compatible = "ti,omap2"
> +- OMAP3 generic - defaults to OMAP3430
> +  compatible = "ti,omap3"
> +- OMAP4 generic - defaults to OMAP4430
> +  compatible = "ti,omap4"
> +- OMAP5 generic - defaults to OMAP5430
> +  compatible = "ti,omap5"
> +- DRA7 generic - defaults to DRA742
> +  compatible = "ti,dra7"
> +- AM43x generic - defaults to AM437x
> +  compatible = "ti,am43"
> +
> +SoCs:
> +
> +- OMAP2420
> +  compatible = "ti,omap2420", "ti,omap2"
> +- OMAP2430
> +  compatible = "ti,omap2430", "ti,omap2"
> +
> +- OMAP3430
> +  compatible = "ti,omap343x", "ti,omap3"
> +- OMAP3630
> +  compatible = "ti,omap363x", "ti,omap3"
> +- AM33xx
> +  compatible = "ti,am33xx", "ti,omap3"
> +
> +- OMAP4430
> +  compatible = "ti,omap443x", "ti,omap4"
> +- OMAP4460
> +  compatible = "ti,omap446x", "ti,omap4"
> +
> +- OMAP5430
> +  compatible = "ti,omap5430", "ti,omap5"
> +- OMAP5432
> +  compatible = "ti,omap5432", "ti,omap5"
> +
> +- DRA742
> +  compatible = "ti,dra7xx", "ti,dra7"
>  
>  Boards:

And I would leave the documentation parts out of the fix as
we're pretty late into the -rc cycle.
  
> +++ b/arch/arm/mach-omap2/board-generic.c
> @@ -113,6 +113,7 @@ MACHINE_END
>  #ifdef CONFIG_ARCH_OMAP3
>  static const char *omap3_boards_compat[] __initdata = {
>  	"ti,omap3",
> +	"ti,omap343x",
>  	NULL,
>  };
>  
> @@ -129,6 +130,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
>  	.restart	= omap3xxx_restart,
>  MACHINE_END
>  
> +static const char *omap36xx_boards_compat[] __initdata = {
> +	"ti,omap363x",
> +	NULL,
> +};

Why not make it just "ti,omap36xx"? This also applies to 3703
where the 3 is missing as it does not have the DSP.

> +DT_MACHINE_START(OMAP36xx_DT, "Generic OMAP363x (Flattened Device Tree)")

Upper case OMAP36XX_DT here please like the others have.

> +	.reserve	= omap_reserve,
> +	.map_io		= omap3_map_io,
> +	.init_early	= omap3630_init_early,
> +	.init_irq	= omap_intc_of_init,
> +	.handle_irq	= omap3_intc_handle_irq,
> +	.init_machine	= omap_generic_init,
> +	.init_late	= omap3_init_late,
> +	.init_time	= omap3_sync32k_timer_init,

Looks like this version has the correct init_time function too :)

> +	.dt_compat	= omap36xx_boards_compat,
> +	.restart	= omap3xxx_restart,
> +MACHINE_END

This looks correct to me.

>  static const char *omap3_gp_boards_compat[] __initdata = {
>  	"ti,omap3-beagle",
>  	"timll,omap3-devkit8000",
> @@ -171,6 +190,8 @@ MACHINE_END
>  #ifdef CONFIG_ARCH_OMAP4
>  static const char *omap4_boards_compat[] __initdata = {
>  	"ti,omap4",
> +	"ti,omap4430",
> +	"ti,omap4460",
>  	NULL,
>  };
>  
> @@ -191,6 +212,8 @@ MACHINE_END
>  #ifdef CONFIG_SOC_OMAP5
>  static const char *omap5_boards_compat[] __initdata = {
>  	"ti,omap5",
> +	"ti,omap5430",
> +	"ti,omap5432",
>  	NULL,
>  };

I would leave these parts for later, maybe with the documentation
changes?

Regards,

Tony

[PATCH 2/2] ARM: dts: omap3-beagle: use 3630 definitions

[Nishanth Menon]

beagle-xm currently would matchup with ti,omap3 which invokes
omap3430_init_early instead of omap3630_init_early. So add
compatiblity for 3630 to allow match

Signed-off-by: Nishanth Menon <nm@ti.com>
---
 arch/arm/boot/dts/omap3-beagle-xm.dts |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 0f7cfc5..2079e22 100644
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -11,7 +11,7 @@
 
 / {
 	model = "TI OMAP3 BeagleBoard xM";
-	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
+	compatible = "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3-beagle", "ti,omap3";
 
 	cpus {
 		cpu@0 {
-- 
1.7.9.5

Re: [PATCH 2/2] ARM: dts: omap3-beagle: use 3630 definitions

[Tony Lindgren]

* Nishanth Menon <nm@ti.com> [131007 09:57]:
> beagle-xm currently would matchup with ti,omap3 which invokes
> omap3430_init_early instead of omap3630_init_early. So add
> compatiblity for 3630 to allow match
> 
> Signed-off-by: Nishanth Menon <nm@ti.com>
> ---
>  arch/arm/boot/dts/omap3-beagle-xm.dts |    2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
> index 0f7cfc5..2079e22 100644
> --- a/arch/arm/boot/dts/omap3-beagle-xm.dts
> +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
> @@ -11,7 +11,7 @@
>  
>  / {
>  	model = "TI OMAP3 BeagleBoard xM";
> -	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
> +	compatible = "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3-beagle", "ti,omap3";
>  
>  	cpus {
>  		cpu@0 {

This compatible string looks hacky.. How about just make it

"ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3";

How about just leave out "ti,omap3-beagle" here?

And I would fold this change into the fix part of your first
patch in this series.

Regards,

Tony

[PATCH V2] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

[Nishanth Menon]

SoC family definitions at the moment are reactive to board needs
as a result, beagle-xm would matchup with ti,omap3 which invokes
omap3430_init_early instead of omap3630_init_early. Obviously, this is
the wrong behavior.

With clock node dts conversion, we get the following warnings as a
result and 3630 based platforms fails to boot (uart4 clocks are only
present in OMAP3630 and not present in OMAP3430):

...
omap_hwmod: uart4: cannot clk_get main_clk uart4_fck
omap_hwmod: uart4: cannot _init_clocks

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434
_init+0x6c/0x80()
omap_hwmod: uart4: couldn't init clocks
...

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
_enable+0x254/0x280()
omap_hwmod: timer12: enabled state can only be entered from
initialized, idle, or disabled state
...

WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224
_idle+0xd4/0xf8()
omap_hwmod: timer12: idle state can only be entered from enabled state

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
_enable+0x254/0x280()
omap_hwmod: uart4: enabled state can only be entered from
initialized, idle, or disabled state

So, add specific compatiblity for 3630 to allow match for Beagle-XM
platform.

Signed-off-by: Nishanth Menon <nm@ti.com>
---

Changes in V2 (since v1):
	- based on v3.12-rc4 tag
	- Update based on Tony's review comments.

V1: http://marc.info/?l=linux-omap&m=138117342909375&w=2

RFC: https://patchwork.kernel.org/patch/2919661/

 arch/arm/boot/dts/omap3-beagle-xm.dts |    2 +-
 arch/arm/mach-omap2/board-generic.c   |   19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 0c514dc..02dd4a9 100644
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -11,7 +11,7 @@
 
 / {
 	model = "TI OMAP3 BeagleBoard xM";
-	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
+	compatible = "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3";
 
 	cpus {
 		cpu@0 {
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 39c7838..4fe5b9c 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -113,6 +113,7 @@ MACHINE_END
 #ifdef CONFIG_ARCH_OMAP3
 static const char *omap3_boards_compat[] __initdata = {
 	"ti,omap3",
+	"ti,omap343x",
 	NULL,
 };
 
@@ -129,6 +130,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
 	.restart	= omap3xxx_restart,
 MACHINE_END
 
+static const char *omap36xx_boards_compat[] __initdata = {
+	"ti,omap36xx",
+	NULL,
+};
+
+DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP363x (Flattened Device Tree)")
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap3630_init_early,
+	.init_irq	= omap_intc_of_init,
+	.handle_irq	= omap3_intc_handle_irq,
+	.init_machine	= omap_generic_init,
+	.init_late	= omap3_init_late,
+	.init_time	= omap3_sync32k_timer_init,
+	.dt_compat	= omap36xx_boards_compat,
+	.restart	= omap3xxx_restart,
+MACHINE_END
+
 static const char *omap3_gp_boards_compat[] __initdata = {
 	"ti,omap3-beagle",
 	"timll,omap3-devkit8000",
-- 
1.7.9.5

Re: [PATCH V2] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

[Nishanth Menon]

On 10/07/2013 03:30 PM, Nishanth Menon wrote:
[...]
> diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
> index 0c514dc..02dd4a9 100644
> --- a/arch/arm/boot/dts/omap3-beagle-xm.dts
> +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
> @@ -11,7 +11,7 @@
>  
>  / {
>  	model = "TI OMAP3 BeagleBoard xM";
> -	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
> +	compatible = "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3";

^^^ yikes - should have been ti,omap36xx -> apologies, my fix was not
committed in local branch :( - will update and resend - grr..


-- 
Regards,
Nishanth Menon

[PATCH V3] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

[Nishanth Menon]

SoC family definitions at the moment are reactive to board needs
as a result, beagle-xm would matchup with ti,omap3 which invokes
omap3430_init_early instead of omap3630_init_early. Obviously, this is
the wrong behavior.

With clock node dts conversion, we get the following warnings as a
result and 3630 based platforms fails to boot (uart4 clocks are only
present in OMAP3630 and not present in OMAP3430):

...
omap_hwmod: uart4: cannot clk_get main_clk uart4_fck
omap_hwmod: uart4: cannot _init_clocks

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434
_init+0x6c/0x80()
omap_hwmod: uart4: couldn't init clocks
...

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
_enable+0x254/0x280()
omap_hwmod: timer12: enabled state can only be entered from
initialized, idle, or disabled state
...

WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224
_idle+0xd4/0xf8()
omap_hwmod: timer12: idle state can only be entered from enabled state

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
_enable+0x254/0x280()
omap_hwmod: uart4: enabled state can only be entered from
initialized, idle, or disabled state

So, add specific compatiblity for 3630 to allow match for Beagle-XM
platform.

Signed-off-by: Nishanth Menon <nm@ti.com>
---

Changes in V3 (since v2):
	- Fix typo in dts :(

V2: https://patchwork.kernel.org/patch/2999111/
	- based on v3.12-rc4 tag
	- Update based on Tony's review comments.

V1: http://marc.info/?l=linux-omap&m=138117342909375&w=2

RFC: https://patchwork.kernel.org/patch/2919661/

 arch/arm/boot/dts/omap3-beagle-xm.dts |    2 +-
 arch/arm/mach-omap2/board-generic.c   |   19 +++++++++++++++++++
 2 files changed, 20 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 0c514dc..2816bf6 100644
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -11,7 +11,7 @@
 
 / {
 	model = "TI OMAP3 BeagleBoard xM";
-	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
+	compatible = "ti,omap3-beagle-xm", "ti,omap36xx", "ti,omap3";
 
 	cpus {
 		cpu@0 {
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 39c7838..4fe5b9c 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -113,6 +113,7 @@ MACHINE_END
 #ifdef CONFIG_ARCH_OMAP3
 static const char *omap3_boards_compat[] __initdata = {
 	"ti,omap3",
+	"ti,omap343x",
 	NULL,
 };
 
@@ -129,6 +130,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
 	.restart	= omap3xxx_restart,
 MACHINE_END
 
+static const char *omap36xx_boards_compat[] __initdata = {
+	"ti,omap36xx",
+	NULL,
+};
+
+DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)")
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap3630_init_early,
+	.init_irq	= omap_intc_of_init,
+	.handle_irq	= omap3_intc_handle_irq,
+	.init_machine	= omap_generic_init,
+	.init_late	= omap3_init_late,
+	.init_time	= omap3_sync32k_timer_init,
+	.dt_compat	= omap36xx_boards_compat,
+	.restart	= omap3xxx_restart,
+MACHINE_END
+
 static const char *omap3_gp_boards_compat[] __initdata = {
 	"ti,omap3-beagle",
 	"timll,omap3-devkit8000",
-- 
1.7.9.5

Re: [PATCH V3] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

[Sebastian Reichel]

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On Mon, Oct 07, 2013 at 03:43:49PM -0500, Nishanth Menon wrote:
> diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
> index 39c7838..4fe5b9c 100644
> --- a/arch/arm/mach-omap2/board-generic.c
> +++ b/arch/arm/mach-omap2/board-generic.c
> @@ -113,6 +113,7 @@ MACHINE_END
>  #ifdef CONFIG_ARCH_OMAP3
>  static const char *omap3_boards_compat[] __initdata = {
>  	"ti,omap3",
> +	"ti,omap343x",
            ^^^^
You used omap36xx everywhere, so I guess this should be
"ti,omap34xx"?

-- Sebastian

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Re: [PATCH V3] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

[Nishanth Menon]

On 10/07/2013 07:05 PM, Sebastian Reichel wrote:
> On Mon, Oct 07, 2013 at 03:43:49PM -0500, Nishanth Menon wrote:
>> diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
>> index 39c7838..4fe5b9c 100644
>> --- a/arch/arm/mach-omap2/board-generic.c
>> +++ b/arch/arm/mach-omap2/board-generic.c
>> @@ -113,6 +113,7 @@ MACHINE_END
>>  #ifdef CONFIG_ARCH_OMAP3
>>  static const char *omap3_boards_compat[] __initdata = {
>>  	"ti,omap3",
>> +	"ti,omap343x",
>             ^^^^
> You used omap36xx everywhere, so I guess this should be
> "ti,omap34xx"?

3630 has at least two variants:
http://www.ti.com/product/omap3621
http://www.ti.com/product/omap3630

It got further spun off in 37xx family:
http://www.ti.com/product/dm3730 (DM3730 and DM3725)

3430 is no longer in production - but just had a single version (at
least what I can remember).

3530 variant of 3430 on the other hand has a few:
http://processors.wiki.ti.com/index.php/OMAP3_Overview


I am ok to change to ti,omap34xx if folks think that is the right
thing to do. Personally, I might prefer to handle 35xx family slightly
differently considering deltas.

-- 
Regards,
Nishanth Menon

Re: [PATCH V3] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

[Tony Lindgren]

* Nishanth Menon <nm@ti.com> [131008 05:08]:
> On 10/07/2013 07:05 PM, Sebastian Reichel wrote:
> > On Mon, Oct 07, 2013 at 03:43:49PM -0500, Nishanth Menon wrote:
> >> diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
> >> index 39c7838..4fe5b9c 100644
> >> --- a/arch/arm/mach-omap2/board-generic.c
> >> +++ b/arch/arm/mach-omap2/board-generic.c
> >> @@ -113,6 +113,7 @@ MACHINE_END
> >>  #ifdef CONFIG_ARCH_OMAP3
> >>  static const char *omap3_boards_compat[] __initdata = {
> >>  	"ti,omap3",
> >> +	"ti,omap343x",
> >             ^^^^
> > You used omap36xx everywhere, so I guess this should be
> > "ti,omap34xx"?
> 
> 3630 has at least two variants:
> http://www.ti.com/product/omap3621
> http://www.ti.com/product/omap3630
> 
> It got further spun off in 37xx family:
> http://www.ti.com/product/dm3730 (DM3730 and DM3725)
> 
> 3430 is no longer in production - but just had a single version (at
> least what I can remember).
> 
> 3530 variant of 3430 on the other hand has a few:
> http://processors.wiki.ti.com/index.php/OMAP3_Overview
> 
> 
> I am ok to change to ti,omap34xx if folks think that is the right
> thing to do. Personally, I might prefer to handle 35xx family slightly
> differently considering deltas.

I've dropped that part as that's not needed for the fix AFAIK.
Here's what I've applied and pushed out to omap-for-v3.12/fixes.

Regards,

Tony

From: Nishanth Menon <nm@ti.com>
Date: Mon, 7 Oct 2013 15:43:49 -0500
Subject: [PATCH] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

SoC family definitions at the moment are reactive to board needs
as a result, beagle-xm would matchup with ti,omap3 which invokes
omap3430_init_early instead of omap3630_init_early. Obviously, this is
the wrong behavior.

With clock node dts conversion, we get the following warnings before
system hangs as a result and 3630 based platforms fails to boot
(uart4 clocks are only present in OMAP3630 and not present in
OMAP3430):

...
omap_hwmod: uart4: cannot clk_get main_clk uart4_fck
omap_hwmod: uart4: cannot _init_clocks

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434
_init+0x6c/0x80()
omap_hwmod: uart4: couldn't init clocks
...

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
_enable+0x254/0x280()
omap_hwmod: timer12: enabled state can only be entered from
initialized, idle, or disabled state
...

WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224
_idle+0xd4/0xf8()
omap_hwmod: timer12: idle state can only be entered from enabled state

WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
_enable+0x254/0x280()
omap_hwmod: uart4: enabled state can only be entered from
initialized, idle, or disabled state

So, add specific compatiblity for 3630 to allow match for Beagle-XM
platform.

Signed-off-by: Nishanth Menon <nm@ti.com>
[tony@atomide.com: left out ti,omap343x, updated comments]
Signed-off-by: Tony Lindgren <tony@atomide.com>

diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 0c514dc..2816bf6 100644
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -11,7 +11,7 @@
 
 / {
 	model = "TI OMAP3 BeagleBoard xM";
-	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
+	compatible = "ti,omap3-beagle-xm", "ti,omap36xx", "ti,omap3";
 
 	cpus {
 		cpu@0 {
diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
index 39c7838..87162e1 100644
--- a/arch/arm/mach-omap2/board-generic.c
+++ b/arch/arm/mach-omap2/board-generic.c
@@ -129,6 +129,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
 	.restart	= omap3xxx_restart,
 MACHINE_END
 
+static const char *omap36xx_boards_compat[] __initdata = {
+	"ti,omap36xx",
+	NULL,
+};
+
+DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)")
+	.reserve	= omap_reserve,
+	.map_io		= omap3_map_io,
+	.init_early	= omap3630_init_early,
+	.init_irq	= omap_intc_of_init,
+	.handle_irq	= omap3_intc_handle_irq,
+	.init_machine	= omap_generic_init,
+	.init_late	= omap3_init_late,
+	.init_time	= omap3_sync32k_timer_init,
+	.dt_compat	= omap36xx_boards_compat,
+	.restart	= omap3xxx_restart,
+MACHINE_END
+
 static const char *omap3_gp_boards_compat[] __initdata = {
 	"ti,omap3-beagle",
 	"timll,omap3-devkit8000",

Re: [PATCH V3] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree

[Nishanth Menon]

On 10/08/2013 12:58 PM, Tony Lindgren wrote:
> * Nishanth Menon <nm@ti.com> [131008 05:08]:
>> On 10/07/2013 07:05 PM, Sebastian Reichel wrote:
>>> On Mon, Oct 07, 2013 at 03:43:49PM -0500, Nishanth Menon wrote:
>>>> diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
>>>> index 39c7838..4fe5b9c 100644
>>>> --- a/arch/arm/mach-omap2/board-generic.c
>>>> +++ b/arch/arm/mach-omap2/board-generic.c
>>>> @@ -113,6 +113,7 @@ MACHINE_END
>>>>  #ifdef CONFIG_ARCH_OMAP3
>>>>  static const char *omap3_boards_compat[] __initdata = {
>>>>  	"ti,omap3",
>>>> +	"ti,omap343x",
>>>             ^^^^
>>> You used omap36xx everywhere, so I guess this should be
>>> "ti,omap34xx"?
>>
>> 3630 has at least two variants:
>> http://www.ti.com/product/omap3621
>> http://www.ti.com/product/omap3630
>>
>> It got further spun off in 37xx family:
>> http://www.ti.com/product/dm3730 (DM3730 and DM3725)
>>
>> 3430 is no longer in production - but just had a single version (at
>> least what I can remember).
>>
>> 3530 variant of 3430 on the other hand has a few:
>> http://processors.wiki.ti.com/index.php/OMAP3_Overview
>>
>>
>> I am ok to change to ti,omap34xx if folks think that is the right
>> thing to do. Personally, I might prefer to handle 35xx family slightly
>> differently considering deltas.
> 
> I've dropped that part as that's not needed for the fix AFAIK.
> Here's what I've applied and pushed out to omap-for-v3.12/fixes.
> 
> Regards,
> 
> Tony
> 
> From: Nishanth Menon <nm@ti.com>
> Date: Mon, 7 Oct 2013 15:43:49 -0500
> Subject: [PATCH] ARM: OMAP3: Fix hardware detection for omap3630 when booted with device tree
> 
> SoC family definitions at the moment are reactive to board needs
> as a result, beagle-xm would matchup with ti,omap3 which invokes
> omap3430_init_early instead of omap3630_init_early. Obviously, this is
> the wrong behavior.
> 
> With clock node dts conversion, we get the following warnings before
> system hangs as a result and 3630 based platforms fails to boot
> (uart4 clocks are only present in OMAP3630 and not present in
> OMAP3430):
> 
> ...
> omap_hwmod: uart4: cannot clk_get main_clk uart4_fck
> omap_hwmod: uart4: cannot _init_clocks
> 
> WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2434
> _init+0x6c/0x80()
> omap_hwmod: uart4: couldn't init clocks
> ...
> 
> WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
> _enable+0x254/0x280()
> omap_hwmod: timer12: enabled state can only be entered from
> initialized, idle, or disabled state
> ...
> 
> WARNING: CPU: 0 PID: 46 at arch/arm/mach-omap2/omap_hwmod.c:2224
> _idle+0xd4/0xf8()
> omap_hwmod: timer12: idle state can only be entered from enabled state
> 
> WARNING: CPU: 0 PID: 1 at arch/arm/mach-omap2/omap_hwmod.c:2126
> _enable+0x254/0x280()
> omap_hwmod: uart4: enabled state can only be entered from
> initialized, idle, or disabled state
> 
> So, add specific compatiblity for 3630 to allow match for Beagle-XM
> platform.
> 
> Signed-off-by: Nishanth Menon <nm@ti.com>
> [tony@atomide.com: left out ti,omap343x, updated comments]
> Signed-off-by: Tony Lindgren <tony@atomide.com>
> 
> diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
> index 0c514dc..2816bf6 100644
> --- a/arch/arm/boot/dts/omap3-beagle-xm.dts
> +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
> @@ -11,7 +11,7 @@
>  
>  / {
>  	model = "TI OMAP3 BeagleBoard xM";
> -	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
> +	compatible = "ti,omap3-beagle-xm", "ti,omap36xx", "ti,omap3";
>  
>  	cpus {
>  		cpu@0 {
> diff --git a/arch/arm/mach-omap2/board-generic.c b/arch/arm/mach-omap2/board-generic.c
> index 39c7838..87162e1 100644
> --- a/arch/arm/mach-omap2/board-generic.c
> +++ b/arch/arm/mach-omap2/board-generic.c
> @@ -129,6 +129,24 @@ DT_MACHINE_START(OMAP3_DT, "Generic OMAP3 (Flattened Device Tree)")
>  	.restart	= omap3xxx_restart,
>  MACHINE_END
>  
> +static const char *omap36xx_boards_compat[] __initdata = {
> +	"ti,omap36xx",
> +	NULL,
> +};
> +
> +DT_MACHINE_START(OMAP36XX_DT, "Generic OMAP36xx (Flattened Device Tree)")
> +	.reserve	= omap_reserve,
> +	.map_io		= omap3_map_io,
> +	.init_early	= omap3630_init_early,
> +	.init_irq	= omap_intc_of_init,
> +	.handle_irq	= omap3_intc_handle_irq,
> +	.init_machine	= omap_generic_init,
> +	.init_late	= omap3_init_late,
> +	.init_time	= omap3_sync32k_timer_init,
> +	.dt_compat	= omap36xx_boards_compat,
> +	.restart	= omap3xxx_restart,
> +MACHINE_END
> +
>  static const char *omap3_gp_boards_compat[] __initdata = {
>  	"ti,omap3-beagle",
>  	"timll,omap3-devkit8000",
> 

LGTM. Thanks for doing it.

-- 
Regards,
Nishanth Menon

Re: [PATCH 2/2] ARM: dts: omap3-beagle: use 3630 definitions

[Felipe Balbi]

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Hi,

On Mon, Oct 07, 2013 at 12:20:09PM -0700, Tony Lindgren wrote:
> * Nishanth Menon <nm@ti.com> [131007 09:57]:
> > beagle-xm currently would matchup with ti,omap3 which invokes
> > omap3430_init_early instead of omap3630_init_early. So add
> > compatiblity for 3630 to allow match
> > 
> > Signed-off-by: Nishanth Menon <nm@ti.com>
> > ---
> >  arch/arm/boot/dts/omap3-beagle-xm.dts |    2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
> > index 0f7cfc5..2079e22 100644
> > --- a/arch/arm/boot/dts/omap3-beagle-xm.dts
> > +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
> > @@ -11,7 +11,7 @@
> >  
> >  / {
> >  	model = "TI OMAP3 BeagleBoard xM";
> > -	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
> > +	compatible = "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3-beagle", "ti,omap3";
> >  
> >  	cpus {
> >  		cpu@0 {
> 
> This compatible string looks hacky.. How about just make it
> 
> "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3";
> 
> How about just leave out "ti,omap3-beagle" here?

ti,omap3-beagle was already part of the original file, we can definitely
remove but I'd expect us to maintain support for that string
indefinitely should anybody continue to use older dtbs.

-- 
balbi

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Re: [PATCH 2/2] ARM: dts: omap3-beagle: use 3630 definitions

[Nishanth Menon]

On 10/08/2013 12:47 PM, Felipe Balbi wrote:
> Hi,
> 
> On Mon, Oct 07, 2013 at 12:20:09PM -0700, Tony Lindgren wrote:
>> * Nishanth Menon <nm@ti.com> [131007 09:57]:
>>> beagle-xm currently would matchup with ti,omap3 which invokes
>>> omap3430_init_early instead of omap3630_init_early. So add
>>> compatiblity for 3630 to allow match
>>>
>>> Signed-off-by: Nishanth Menon <nm@ti.com>
>>> ---
>>>  arch/arm/boot/dts/omap3-beagle-xm.dts |    2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
>>> index 0f7cfc5..2079e22 100644
>>> --- a/arch/arm/boot/dts/omap3-beagle-xm.dts
>>> +++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
>>> @@ -11,7 +11,7 @@
>>>  
>>>  / {
>>>  	model = "TI OMAP3 BeagleBoard xM";
>>> -	compatible = "ti,omap3-beagle-xm", "ti,omap3-beagle", "ti,omap3";
>>> +	compatible = "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3-beagle", "ti,omap3";
>>>  
>>>  	cpus {
>>>  		cpu@0 {
>>
>> This compatible string looks hacky.. How about just make it
>>
>> "ti,omap3-beagle-xm", "ti,omap363x", "ti,omap3";
>>
>> How about just leave out "ti,omap3-beagle" here?
> 
> ti,omap3-beagle was already part of the original file, we can definitely
> remove but I'd expect us to maintain support for that string
> indefinitely should anybody continue to use older dtbs.
> 
it already is supported (we still have a beagleboard) - the current
patch rev does nothing to break existing code or bindings.

-- 
Regards,
Nishanth Menon