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[4/9] ARM: dts: OMAP3: Add support for OMAP3430 SDP board

Message ID 1362763654-9660-5-git-send-email-jon-hunter@ti.com (mailing list archive)
State New, archived
Headers show

Commit Message

Hunter, Jon March 8, 2013, 5:27 p.m. UTC
Adds basic device-tree support for OMAP3430 SDP board which has 256MB
of RAM and uses the TWL4030 power management IC.

Signed-off-by: Jon Hunter <jon-hunter@ti.com>
---
 arch/arm/boot/dts/Makefile         |    1 +
 arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+)
 create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts

Comments

Anil Kumar March 9, 2013, 2:25 a.m. UTC | #1
Hi Jon,

On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
> of RAM and uses the TWL4030 power management IC.

I think this board support should be in separate patch series with
related patches.

>
> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
> ---
>  arch/arm/boot/dts/Makefile         |    1 +
>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
>  2 files changed, 47 insertions(+)
>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 9c62558..89013ed 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
>         omap3-beagle-xm.dtb \
>         omap3-evm.dtb \
>         omap3-tobi.dtb \
> +       omap3430-sdp.dtb \
>         omap4-panda.dtb \
>         omap4-panda-a4.dtb \
>         omap4-panda-es.dtb \
> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
> new file mode 100644
> index 0000000..be0650d
> --- /dev/null
> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
> @@ -0,0 +1,46 @@
> +/*
> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +/dts-v1/;
> +
> +/include/ "omap3.dtsi"
> +
> +/ {
> +       model = "TI OMAP3430 SDP";
> +       compatible = "ti,omap3430-sdp", "ti,omap3";

I have not seen any related changes in "board-generic.c" for your board.
So just wanted know, how this board is booting ?

> +
> +       memory {
> +               device_type = "memory";
> +               reg = <0x80000000 0x10000000>; /* 256 MB */
> +       };
> +};
> +
> +&i2c1 {
> +       clock-frequency = <2600000>;
> +
> +       twl: twl@48 {
> +               reg = <0x48>;
> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
> +               interrupt-parent = <&intc>;
> +       };
> +};
> +
> +/include/ "twl4030.dtsi"
> +
> +&mmc1 {
> +       vmmc-supply = <&vmmc1>;
> +       vmmc_aux-supply = <&vsim>;
> +       bus-width = <8>;
> +};
> +
> +&mmc2 {
> +       status = "disabled";
> +};
> +
> +&mmc3 {
> +       status = "disabled";
> +};

I think you should disable modules those are not currently used
as they are enabled by default in omap3.dtsi.

exp:-

&mcbsp2 {
        status = "disabled";
};

> --
> 1.7.10.4
>
> _______________________________________________
> devicetree-discuss mailing list
> devicetree-discuss@lists.ozlabs.org
> https://lists.ozlabs.org/listinfo/devicetree-discuss
Anil Kumar March 11, 2013, 2:45 a.m. UTC | #2
Hi Jon,

On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
> of RAM and uses the TWL4030 power management IC.
>
> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
> ---
>  arch/arm/boot/dts/Makefile         |    1 +
>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
>  2 files changed, 47 insertions(+)
>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
>
> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> index 9c62558..89013ed 100644
> --- a/arch/arm/boot/dts/Makefile
> +++ b/arch/arm/boot/dts/Makefile
> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
>         omap3-beagle-xm.dtb \
>         omap3-evm.dtb \
>         omap3-tobi.dtb \
> +       omap3430-sdp.dtb \
>         omap4-panda.dtb \
>         omap4-panda-a4.dtb \
>         omap4-panda-es.dtb \
> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
> new file mode 100644
> index 0000000..be0650d
> --- /dev/null
> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
> @@ -0,0 +1,46 @@
> +/*
> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +/dts-v1/;
> +
> +/include/ "omap3.dtsi"
> +
> +/ {
> +       model = "TI OMAP3430 SDP";
> +       compatible = "ti,omap3430-sdp", "ti,omap3";
> +
> +       memory {
> +               device_type = "memory";
> +               reg = <0x80000000 0x10000000>; /* 256 MB */
> +       };
> +};
> +
> +&i2c1 {
> +       clock-frequency = <2600000>;
> +
> +       twl: twl@48 {
> +               reg = <0x48>;
> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
> +               interrupt-parent = <&intc>;

No need of  "interrupt-parent = <&intc>" as it is with root node
already.

Thanks,
Anil

[...]
Hunter, Jon March 11, 2013, 5:53 p.m. UTC | #3
On 03/08/2013 08:25 PM, Anil Kumar wrote:
> Hi Jon,
> 
> On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
>> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
>> of RAM and uses the TWL4030 power management IC.
> 
> I think this board support should be in separate patch series with
> related patches.

Well I wanted to keep them altogether so that I can send a pull request
to Benoit and Tony.

>>
>> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
>> ---
>>  arch/arm/boot/dts/Makefile         |    1 +
>>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
>>  2 files changed, 47 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index 9c62558..89013ed 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
>>         omap3-beagle-xm.dtb \
>>         omap3-evm.dtb \
>>         omap3-tobi.dtb \
>> +       omap3430-sdp.dtb \
>>         omap4-panda.dtb \
>>         omap4-panda-a4.dtb \
>>         omap4-panda-es.dtb \
>> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
>> new file mode 100644
>> index 0000000..be0650d
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
>> @@ -0,0 +1,46 @@
>> +/*
>> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 as
>> + * published by the Free Software Foundation.
>> + */
>> +/dts-v1/;
>> +
>> +/include/ "omap3.dtsi"
>> +
>> +/ {
>> +       model = "TI OMAP3430 SDP";
>> +       compatible = "ti,omap3430-sdp", "ti,omap3";
> 
> I have not seen any related changes in "board-generic.c" for your board.
> So just wanted know, how this board is booting ?

If you look at board-generic.c you will see that "ti,omap3" will match
the OMAP3 generic machine. So you don't need to modify the board-generic.c.

>> +
>> +       memory {
>> +               device_type = "memory";
>> +               reg = <0x80000000 0x10000000>; /* 256 MB */
>> +       };
>> +};
>> +
>> +&i2c1 {
>> +       clock-frequency = <2600000>;
>> +
>> +       twl: twl@48 {
>> +               reg = <0x48>;
>> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
>> +               interrupt-parent = <&intc>;
>> +       };
>> +};
>> +
>> +/include/ "twl4030.dtsi"
>> +
>> +&mmc1 {
>> +       vmmc-supply = <&vmmc1>;
>> +       vmmc_aux-supply = <&vsim>;
>> +       bus-width = <8>;
>> +};
>> +
>> +&mmc2 {
>> +       status = "disabled";
>> +};
>> +
>> +&mmc3 {
>> +       status = "disabled";
>> +};
> 
> I think you should disable modules those are not currently used
> as they are enabled by default in omap3.dtsi.
> 
> exp:-
> 
> &mcbsp2 {
>         status = "disabled";
> };

Well may be we could do that in a follow-up patch. If you look at other
omap3 boards we have not gone through and disabled all unused modules
either. So although I agree, right now I just want to get minimal
support added.

Jon
Hunter, Jon March 11, 2013, 5:54 p.m. UTC | #4
On 03/10/2013 09:45 PM, Anil Kumar wrote:
> Hi Jon,
> 
> On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
>> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
>> of RAM and uses the TWL4030 power management IC.
>>
>> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
>> ---
>>  arch/arm/boot/dts/Makefile         |    1 +
>>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
>>  2 files changed, 47 insertions(+)
>>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
>>
>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> index 9c62558..89013ed 100644
>> --- a/arch/arm/boot/dts/Makefile
>> +++ b/arch/arm/boot/dts/Makefile
>> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
>>         omap3-beagle-xm.dtb \
>>         omap3-evm.dtb \
>>         omap3-tobi.dtb \
>> +       omap3430-sdp.dtb \
>>         omap4-panda.dtb \
>>         omap4-panda-a4.dtb \
>>         omap4-panda-es.dtb \
>> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
>> new file mode 100644
>> index 0000000..be0650d
>> --- /dev/null
>> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
>> @@ -0,0 +1,46 @@
>> +/*
>> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
>> + *
>> + * This program is free software; you can redistribute it and/or modify
>> + * it under the terms of the GNU General Public License version 2 as
>> + * published by the Free Software Foundation.
>> + */
>> +/dts-v1/;
>> +
>> +/include/ "omap3.dtsi"
>> +
>> +/ {
>> +       model = "TI OMAP3430 SDP";
>> +       compatible = "ti,omap3430-sdp", "ti,omap3";
>> +
>> +       memory {
>> +               device_type = "memory";
>> +               reg = <0x80000000 0x10000000>; /* 256 MB */
>> +       };
>> +};
>> +
>> +&i2c1 {
>> +       clock-frequency = <2600000>;
>> +
>> +       twl: twl@48 {
>> +               reg = <0x48>;
>> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
>> +               interrupt-parent = <&intc>;
> 
> No need of  "interrupt-parent = <&intc>" as it is with root node
> already.

Yes you are correct. Will update.

Thanks
Jon
Kumar, Anil March 12, 2013, 2:42 a.m. UTC | #5
On Mon, Mar 11, 2013 at 23:23:32, Hunter, Jon wrote:
> 
> On 03/08/2013 08:25 PM, Anil Kumar wrote:
> > Hi Jon,
> > 
> > On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
> >> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
> >> of RAM and uses the TWL4030 power management IC.
> > 
> > I think this board support should be in separate patch series with
> > related patches.
> 
> Well I wanted to keep them altogether so that I can send a pull request
> to Benoit and Tony.

Sorry, but can you please tell what makes you to think that you
can send pull request only when they are altogether ?

Is there any logical dependency with other patches except 
"[PATCH 6/9] ARM: dts: Add OMAP3430 SDP flash memory bindings" is on 
top of this patch ?

> 
> >>
> >> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
> >> ---
> >>  arch/arm/boot/dts/Makefile         |    1 +
> >>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
> >>  2 files changed, 47 insertions(+)
> >>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
> >>
> >> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> >> index 9c62558..89013ed 100644
> >> --- a/arch/arm/boot/dts/Makefile
> >> +++ b/arch/arm/boot/dts/Makefile
> >> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
> >>         omap3-beagle-xm.dtb \
> >>         omap3-evm.dtb \
> >>         omap3-tobi.dtb \
> >> +       omap3430-sdp.dtb \
> >>         omap4-panda.dtb \
> >>         omap4-panda-a4.dtb \
> >>         omap4-panda-es.dtb \
> >> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
> >> new file mode 100644
> >> index 0000000..be0650d
> >> --- /dev/null
> >> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
> >> @@ -0,0 +1,46 @@
> >> +/*
> >> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
> >> + *
> >> + * This program is free software; you can redistribute it and/or modify
> >> + * it under the terms of the GNU General Public License version 2 as
> >> + * published by the Free Software Foundation.
> >> + */
> >> +/dts-v1/;
> >> +
> >> +/include/ "omap3.dtsi"
> >> +
> >> +/ {
> >> +       model = "TI OMAP3430 SDP";
> >> +       compatible = "ti,omap3430-sdp", "ti,omap3";
> > 
> > I have not seen any related changes in "board-generic.c" for your board.
> > So just wanted know, how this board is booting ?
> 
> If you look at board-generic.c you will see that "ti,omap3" will match
> the OMAP3 generic machine. So you don't need to modify the board-generic.c.

According to this omap3-beagle.dts and omap3-beagle-xm.dts are also 
booting in some way. So it is not clear to me, why there two
"DT_MACHINE_START" for omap3. I have seen there is only one 
different in "init_time" for the same. 

> 
> >> +
> >> +       memory {
> >> +               device_type = "memory";
> >> +               reg = <0x80000000 0x10000000>; /* 256 MB */
> >> +       };
> >> +};
> >> +
> >> +&i2c1 {
> >> +       clock-frequency = <2600000>;
> >> +
> >> +       twl: twl@48 {
> >> +               reg = <0x48>;
> >> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
> >> +               interrupt-parent = <&intc>;
> >> +       };
> >> +};
> >> +
> >> +/include/ "twl4030.dtsi"
> >> +
> >> +&mmc1 {
> >> +       vmmc-supply = <&vmmc1>;
> >> +       vmmc_aux-supply = <&vsim>;
> >> +       bus-width = <8>;
> >> +};
> >> +
> >> +&mmc2 {
> >> +       status = "disabled";
> >> +};
> >> +
> >> +&mmc3 {
> >> +       status = "disabled";
> >> +};
> > 
> > I think you should disable modules those are not currently used
> > as they are enabled by default in omap3.dtsi.
> > 
> > exp:-
> > 
> > &mcbsp2 {
> >         status = "disabled";
> > };
> 
> Well may be we could do that in a follow-up patch. If you look at other
> omap3 boards we have not gone through and disabled all unused modules
> either. So although I agree, right now I just want to get minimal
> support added.
> 

Hmm... But it makes the kernel to call unused driver probe and get failed
those required some platform date from DT? you can see the kernel boot logs.

Thanks,
Anil
Javier Martinez Canillas March 12, 2013, 8:50 a.m. UTC | #6
On Tue, Mar 12, 2013 at 3:42 AM, Kumar, Anil <anilkumar.v@ti.com> wrote:
>
> On Mon, Mar 11, 2013 at 23:23:32, Hunter, Jon wrote:
>>
>> On 03/08/2013 08:25 PM, Anil Kumar wrote:
>> > Hi Jon,
>> >
>> > On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
>> >> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
>> >> of RAM and uses the TWL4030 power management IC.
>> >
>> > I think this board support should be in separate patch series with
>> > related patches.
>>
>> Well I wanted to keep them altogether so that I can send a pull request
>> to Benoit and Tony.
>
> Sorry, but can you please tell what makes you to think that you
> can send pull request only when they are altogether ?
>
> Is there any logical dependency with other patches except
> "[PATCH 6/9] ARM: dts: Add OMAP3430 SDP flash memory bindings" is on
> top of this patch ?
>
>>
>> >>
>> >> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
>> >> ---
>> >>  arch/arm/boot/dts/Makefile         |    1 +
>> >>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
>> >>  2 files changed, 47 insertions(+)
>> >>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
>> >>
>> >> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>> >> index 9c62558..89013ed 100644
>> >> --- a/arch/arm/boot/dts/Makefile
>> >> +++ b/arch/arm/boot/dts/Makefile
>> >> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
>> >>         omap3-beagle-xm.dtb \
>> >>         omap3-evm.dtb \
>> >>         omap3-tobi.dtb \
>> >> +       omap3430-sdp.dtb \
>> >>         omap4-panda.dtb \
>> >>         omap4-panda-a4.dtb \
>> >>         omap4-panda-es.dtb \
>> >> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
>> >> new file mode 100644
>> >> index 0000000..be0650d
>> >> --- /dev/null
>> >> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
>> >> @@ -0,0 +1,46 @@
>> >> +/*
>> >> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
>> >> + *
>> >> + * This program is free software; you can redistribute it and/or modify
>> >> + * it under the terms of the GNU General Public License version 2 as
>> >> + * published by the Free Software Foundation.
>> >> + */
>> >> +/dts-v1/;
>> >> +
>> >> +/include/ "omap3.dtsi"
>> >> +
>> >> +/ {
>> >> +       model = "TI OMAP3430 SDP";
>> >> +       compatible = "ti,omap3430-sdp", "ti,omap3";
>> >
>> > I have not seen any related changes in "board-generic.c" for your board.
>> > So just wanted know, how this board is booting ?
>>
>> If you look at board-generic.c you will see that "ti,omap3" will match
>> the OMAP3 generic machine. So you don't need to modify the board-generic.c.
>
> According to this omap3-beagle.dts and omap3-beagle-xm.dts are also
> booting in some way. So it is not clear to me, why there two
> "DT_MACHINE_START" for omap3. I have seen there is only one
> different in "init_time" for the same.
>

Hi Anil,

You may take a look to commit:

7dd9d50 ARM: OMAP3: Add generic machine descriptor for boards with
OMAP3 GP device

So, the second DT_MACHINE_START is meant to be used by OMAP3 boards
which use GP devices and this is not the case for "ti,omap3430-sdp"
afaiu.

I wonder if instead of adding each OMAP3 board with GP devices such as
"ti,omap3-beagle", is not better to have a "ti,omap3-gp" compatible
property.

The whole point of DT is to decouple the hardware description from the
kernel code so in general we should use the more generic compatible
string ("ti,omap3") unless the hardware has some specifics that have
to be addressed, such as these boards that use GP devices.

>>
>> >> +
>> >> +       memory {
>> >> +               device_type = "memory";
>> >> +               reg = <0x80000000 0x10000000>; /* 256 MB */
>> >> +       };
>> >> +};
>> >> +
>> >> +&i2c1 {
>> >> +       clock-frequency = <2600000>;
>> >> +
>> >> +       twl: twl@48 {
>> >> +               reg = <0x48>;
>> >> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
>> >> +               interrupt-parent = <&intc>;
>> >> +       };
>> >> +};
>> >> +
>> >> +/include/ "twl4030.dtsi"
>> >> +
>> >> +&mmc1 {
>> >> +       vmmc-supply = <&vmmc1>;
>> >> +       vmmc_aux-supply = <&vsim>;
>> >> +       bus-width = <8>;
>> >> +};
>> >> +
>> >> +&mmc2 {
>> >> +       status = "disabled";
>> >> +};
>> >> +
>> >> +&mmc3 {
>> >> +       status = "disabled";
>> >> +};
>> >
>> > I think you should disable modules those are not currently used
>> > as they are enabled by default in omap3.dtsi.
>> >
>> > exp:-
>> >
>> > &mcbsp2 {
>> >         status = "disabled";
>> > };
>>
>> Well may be we could do that in a follow-up patch. If you look at other
>> omap3 boards we have not gone through and disabled all unused modules
>> either. So although I agree, right now I just want to get minimal
>> support added.
>>
>
> Hmm... But it makes the kernel to call unused driver probe and get failed
> those required some platform date from DT? you can see the kernel boot logs.
>
> Thanks,
> Anil
>
>

Best regards,
Javier
Hunter, Jon March 12, 2013, 9:27 p.m. UTC | #7
On 03/11/2013 09:42 PM, Kumar, Anil wrote:
> 
> On Mon, Mar 11, 2013 at 23:23:32, Hunter, Jon wrote:
>>
>> On 03/08/2013 08:25 PM, Anil Kumar wrote:
>>> Hi Jon,
>>>
>>> On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
>>>> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
>>>> of RAM and uses the TWL4030 power management IC.
>>>
>>> I think this board support should be in separate patch series with
>>> related patches.
>>
>> Well I wanted to keep them altogether so that I can send a pull request
>> to Benoit and Tony.
> 
> Sorry, but can you please tell what makes you to think that you
> can send pull request only when they are altogether ?

That's not the point.
 
> Is there any logical dependency with other patches except 
> "[PATCH 6/9] ARM: dts: Add OMAP3430 SDP flash memory bindings" is on 
> top of this patch ?

Per the $subject of the series these a various DT patches I have pending.
Yes I could break this series up into many separate series, one for PMU,
one for DMA, one for GPMC, one for OMAP3 SDP, but I thought it would be
easier for Tony and Benoit to pull as a single series.

If Tony or Benoit wish for me to separate these out, I will. 
 
>>
>>>>
>>>> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
>>>> ---
>>>>  arch/arm/boot/dts/Makefile         |    1 +
>>>>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
>>>>  2 files changed, 47 insertions(+)
>>>>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
>>>>
>>>> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
>>>> index 9c62558..89013ed 100644
>>>> --- a/arch/arm/boot/dts/Makefile
>>>> +++ b/arch/arm/boot/dts/Makefile
>>>> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
>>>>         omap3-beagle-xm.dtb \
>>>>         omap3-evm.dtb \
>>>>         omap3-tobi.dtb \
>>>> +       omap3430-sdp.dtb \
>>>>         omap4-panda.dtb \
>>>>         omap4-panda-a4.dtb \
>>>>         omap4-panda-es.dtb \
>>>> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
>>>> new file mode 100644
>>>> index 0000000..be0650d
>>>> --- /dev/null
>>>> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
>>>> @@ -0,0 +1,46 @@
>>>> +/*
>>>> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
>>>> + *
>>>> + * This program is free software; you can redistribute it and/or modify
>>>> + * it under the terms of the GNU General Public License version 2 as
>>>> + * published by the Free Software Foundation.
>>>> + */
>>>> +/dts-v1/;
>>>> +
>>>> +/include/ "omap3.dtsi"
>>>> +
>>>> +/ {
>>>> +       model = "TI OMAP3430 SDP";
>>>> +       compatible = "ti,omap3430-sdp", "ti,omap3";
>>>
>>> I have not seen any related changes in "board-generic.c" for your board.
>>> So just wanted know, how this board is booting ?
>>
>> If you look at board-generic.c you will see that "ti,omap3" will match
>> the OMAP3 generic machine. So you don't need to modify the board-generic.c.
> 
> According to this omap3-beagle.dts and omap3-beagle-xm.dts are also 
> booting in some way. So it is not clear to me, why there two
> "DT_MACHINE_START" for omap3. I have seen there is only one 
> different in "init_time" for the same. 

OMAP3 beagle uses the machine descriptor OMAP3_GP_DT where as OMAP3 
beagle-xm (and OMAP3 SDP) use the machine descriptor OMAP3_DT. The
real difference in these machine descriptors is the init_time
function pointer.
 
>>
>>>> +
>>>> +       memory {
>>>> +               device_type = "memory";
>>>> +               reg = <0x80000000 0x10000000>; /* 256 MB */
>>>> +       };
>>>> +};
>>>> +
>>>> +&i2c1 {
>>>> +       clock-frequency = <2600000>;
>>>> +
>>>> +       twl: twl@48 {
>>>> +               reg = <0x48>;
>>>> +               interrupts = <7>; /* SYS_NIRQ cascaded to intc */
>>>> +               interrupt-parent = <&intc>;
>>>> +       };
>>>> +};
>>>> +
>>>> +/include/ "twl4030.dtsi"
>>>> +
>>>> +&mmc1 {
>>>> +       vmmc-supply = <&vmmc1>;
>>>> +       vmmc_aux-supply = <&vsim>;
>>>> +       bus-width = <8>;
>>>> +};
>>>> +
>>>> +&mmc2 {
>>>> +       status = "disabled";
>>>> +};
>>>> +
>>>> +&mmc3 {
>>>> +       status = "disabled";
>>>> +};
>>>
>>> I think you should disable modules those are not currently used
>>> as they are enabled by default in omap3.dtsi.
>>>
>>> exp:-
>>>
>>> &mcbsp2 {
>>>         status = "disabled";
>>> };
>>
>> Well may be we could do that in a follow-up patch. If you look at other
>> omap3 boards we have not gone through and disabled all unused modules
>> either. So although I agree, right now I just want to get minimal
>> support added.
>>
> 
> Hmm... But it makes the kernel to call unused driver probe and get failed
> those required some platform date from DT? you can see the kernel boot logs.

Here is the console output I see on the omap3 sdp. There are a few warnings
around pin-mux settings but nothing major AFAICT ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 3.9.0-rc2-39794-g1c71698 (jenkins@cfasvr1) (gcc version 4.6.1 (Sourcery CodeBench Lite 2011.09-70) ) #4 SMP Tue Mar 12 15:59:47 CDT 2013
[    0.000000] CPU: ARMv7 Processor [411fc083] revision 3 (ARMv7), cr=10c53c7d
[    0.000000] CPU: PIPT / VIPT nonaliasing data cache, VIPT nonaliasing instruction cache
[    0.000000] Machine: Generic OMAP3 (Flattened Device Tree), model: TI OMAP3430 SDP
[    0.000000] cma: CMA: reserved 16 MiB at 8e800000
[    0.000000] Memory policy: ECC disabled, Data cache writeback
[    0.000000] CPU: All CPU(s) started in SVC mode.
[    0.000000] OMAP3430/3530 ES3.1 (l2cache iva sgx neon isp )
[    0.000000] Clocking rate (Crystal/Core/MPU): 26.0/332/600 MHz
[    0.000000] PERCPU: Embedded 9 pages/cpu @c14dc000 s13632 r8192 d15040 u36864
[    0.000000] Built 1 zonelists in Zone order, mobility grouping on.  Total pages: 64768
[    0.000000] Kernel command line: console=ttyO0,115200n8 ip=dhcp earlyprintk
[    0.000000] PID hash table entries: 1024 (order: 0, 4096 bytes)
[    0.000000] Dentry cache hash table entries: 32768 (order: 5, 131072 bytes)
[    0.000000] Inode-cache hash table entries: 16384 (order: 4, 65536 bytes)
[    0.000000] __ex_table already sorted, skipping sort
[    0.000000] Memory: 255MB = 255MB total
[    0.000000] Memory: 223080k/223080k available, 39064k reserved, 0K highmem
[    0.000000] Virtual kernel memory layout:
[    0.000000]     vector  : 0xffff0000 - 0xffff1000   (   4 kB)
[    0.000000]     fixmap  : 0xfff00000 - 0xfffe0000   ( 896 kB)
[    0.000000]     vmalloc : 0xd0800000 - 0xff000000   ( 744 MB)
[    0.000000]     lowmem  : 0xc0000000 - 0xd0000000   ( 256 MB)
[    0.000000]     pkmap   : 0xbfe00000 - 0xc0000000   (   2 MB)
[    0.000000]     modules : 0xbf000000 - 0xbfe00000   (  14 MB)
[    0.000000]       .text : 0xc0008000 - 0xc075f8dc   (7519 kB)
[    0.000000]       .init : 0xc0760000 - 0xc0cda540   (5610 kB)
[    0.000000]       .data : 0xc0cdc000 - 0xc0d75820   ( 615 kB)
[    0.000000]        .bss : 0xc0d75820 - 0xc12d0a88   (5485 kB)
[    0.000000] Hierarchical RCU implementation.
[    0.000000] 	RCU restricting CPUs from NR_CPUS=2 to nr_cpu_ids=1.
[    0.000000] NR_IRQS:16 nr_irqs:16 16
[    0.000000] IRQ: Found an INTC at 0xfa200000 (revision 4.0) with 96 interrupts
[    0.000000] Total of 96 interrupts on 1 active controller
[    0.000000] OMAP clockevent source: timer1 at 32768 Hz
[    0.000000] sched_clock: 32 bits at 32kHz, resolution 30517ns, wraps every 131071999ms
[    0.000000] OMAP clocksource: 32k_counter at 32768 Hz
[    0.000000] Console: colour dummy device 80x30
[    0.000000] Lock dependency validator: Copyright (c) 2006 Red Hat, Inc., Ingo Molnar
[    0.000000] ... MAX_LOCKDEP_SUBCLASSES:  8
[    0.000000] ... MAX_LOCK_DEPTH:          48
[    0.000000] ... MAX_LOCKDEP_KEYS:        8191
[    0.000000] ... CLASSHASH_SIZE:          4096
[    0.000000] ... MAX_LOCKDEP_ENTRIES:     16384
[    0.000000] ... MAX_LOCKDEP_CHAINS:      32768
[    0.000000] ... CHAINHASH_SIZE:          16384
[    0.000000]  memory used by lock dependency info: 3695 kB
[    0.000000]  per task-struct memory footprint: 1152 bytes
[    0.001159] Calibrating delay loop... 395.67 BogoMIPS (lpj=1978368)
[    0.109649] pid_max: default: 32768 minimum: 301
[    0.110290] Security Framework initialized
[    0.110473] Mount-cache hash table entries: 512
[    0.126861] CPU: Testing write buffer coherency: ok
[    0.128692] CPU0: thread -1, cpu 0, socket -1, mpidr 0
[    0.128814] Setting up static identity map for 0xc055bc70 - 0xc055bce0
[    0.132598] Brought up 1 CPUs
[    0.132629] SMP: Total of 1 processors activated (395.67 BogoMIPS).
[    0.132659] CPU: All CPU(s) started in SVC mode.
[    0.136352] devtmpfs: initialized
[    0.196838] pinctrl core: initialized pinctrl subsystem
[    0.204345] regulator-dummy: no parameters
[    0.208740] NET: Registered protocol family 16
[    0.219116] DMA: preallocated 256 KiB pool for atomic coherent allocations
[    0.239593] Reprogramming SDRC clock to 332000000 Hz
[    0.254455] OMAP GPIO hardware version 2.5
[    0.288085] platform 49022000.mcbsp: alias fck already exists
[    0.289916] platform 49024000.mcbsp: alias fck already exists
[    0.307922] omap-gpmc 6e000000.gpmc: GPMC revision 5.0
[    0.312744] No ATAGs?
[    0.312774] hw-breakpoint: debug architecture 0x4 unsupported.
[    0.318359] OMAP DMA hardware revision 4.0
[    0.320190] Serial: AMBA PL011 UART driver
[    0.401214] bio: create slab <bio-0> at 0
[    0.506225] omap-dma-engine 48056000.dma-controller: OMAP DMA engine driver
[    0.517608] SCSI subsystem initialized
[    0.520904] usbcore: registered new interface driver usbfs
[    0.521545] usbcore: registered new interface driver hub
[    0.522277] usbcore: registered new device driver usb
[    0.525085] omap_i2c i2c.8: did not get pins for i2c error: -19
[    0.527038] omap_i2c i2c.8: bus 0 rev3.3 at 2600 kHz
[    0.542297] twl 0-0048: PIH (irq 23) chaining IRQs 338..346
[    0.542999] twl 0-0048: power (irq 343) chaining IRQs 346..353
[    0.550140] VDAC: 1800 mV 
[    0.554077] VPLL2: 1800 mV 
[    0.557281] VMMC1: 1850 <--> 3150 mV at 3150 mV 
[    0.560607] VUSB1V5: 1500 mV 
[    0.563232] VUSB1V8: 1800 mV 
[    0.565734] VUSB3V1: 3100 mV 
[    0.568542] VSIM: 1800 <--> 3000 mV at 1800 mV 
[    0.572418] twl4030_gpio gpio.26: gpio (irq 338) chaining IRQs 354..371
[    0.575836] omap_i2c i2c.9: did not get pins for i2c error: -19
[    0.577331] omap_i2c i2c.9: bus 1 rev3.3 at 100 kHz
[    0.577636] omap_i2c i2c.10: did not get pins for i2c error: -19
[    0.579223] omap_i2c i2c.10: bus 2 rev3.3 at 100 kHz
[    0.589477] Switching to clocksource 32k_counter
[    0.758361] NET: Registered protocol family 2
[    0.761047] TCP established hash table entries: 2048 (order: 2, 16384 bytes)
[    0.761322] TCP bind hash table entries: 2048 (order: 4, 73728 bytes)
[    0.762481] TCP: Hash tables configured (established 2048 bind 2048)
[    0.762786] TCP: reno registered
[    0.762817] UDP hash table entries: 256 (order: 2, 20480 bytes)
[    0.763153] UDP-Lite hash table entries: 256 (order: 2, 20480 bytes)
[    0.764404] NET: Registered protocol family 1
[    0.766204] RPC: Registered named UNIX socket transport module.
[    0.766235] RPC: Registered udp transport module.
[    0.766265] RPC: Registered tcp transport module.
[    0.766265] RPC: Registered tcp NFSv4.1 backchannel transport module.
[    0.886260] NetWinder Floating Point Emulator V0.97 (double precision)
[    0.886749] hw perfevents: enabled with ARMv7 Cortex-A8 PMU driver, 5 counters available
[    1.083740] VFS: Disk quotas dquot_6.5.2
[    1.084136] Dquot-cache hash table entries: 1024 (order 0, 4096 bytes)
[    1.087951] NFS: Registering the id_resolver key type
[    1.088592] Key type id_resolver registered
[    1.088623] Key type id_legacy registered
[    1.088806] jffs2: version 2.2. (NAND) (SUMMARY)  ?? 2001-2006 Red Hat, Inc.
[    1.089538] msgmni has been set to 467
[    1.095092] io scheduler noop registered
[    1.095123] io scheduler deadline registered
[    1.095214] io scheduler cfq registered (default)
[    1.098144] pinctrl-single 48002030.pinmux: 742 pins at pa fa002030 size 1484
[    1.099090] pinctrl-single 48002a58.pinmux: 46 pins at pa fa002a58 size 92
[    1.105224] Serial: 8250/16550 driver, 4 ports, IRQ sharing enabled
[    1.114746] omap_uart serial.5: did not get pins for uart0 error: -19
[    1.115478] serial.5: ttyO0 at MMIO 0x4806a000 (irq = 88) is a OMAP UART0
[    1.825805] console [ttyO0] enabled
[    1.832183] omap_uart serial.6: did not get pins for uart1 error: -19
[    1.839385] serial.6: ttyO1 at MMIO 0x4806c000 (irq = 89) is a OMAP UART1
[    1.848999] omap_uart serial.7: did not get pins for uart2 error: -19
[    1.856353] serial.7: ttyO2 at MMIO 0x49020000 (irq = 90) is a OMAP UART2
[    1.907745] brd: module loaded
[    1.936614] loop: module loaded
[    1.946990] mtdoops: mtd device (mtddev=name/number) must be supplied
[    1.965362] intel,pf48f6000m0y1be: Found 1 x16 devices at 0x0 in 16-bit bank. Manufacturer ID 0x000089 Chip ID 0x0088b1
[    1.976928] Intel/Sharp Extended Query Table at 0x010A
[    1.982482] Intel/Sharp Extended Query Table at 0x010A
[    1.987915] Intel/Sharp Extended Query Table at 0x010A
[    1.993469] Intel/Sharp Extended Query Table at 0x010A
[    1.998901] Intel/Sharp Extended Query Table at 0x010A
[    2.004425] Using buffer write method
[    2.008300] Using auto-unlock on power-up/resume
[    2.013214] cfi_cmdset_0001: Erase suspend on write enabled
[    2.026824] 4 ofpart partitions found on MTD device intel,pf48f6000m0y1be
[    2.034118] Creating 4 MTD partitions on "intel,pf48f6000m0y1be":
[    2.041046] 0x000000000000-0x000000040000 : "bootloader-nor"
[    2.055450] 0x000000040000-0x000000080000 : "params-nor"
[    2.066467] 0x000000080000-0x000000280000 : "kernel-nor"
[    2.077606] 0x000000240000-0x000007fc0000 : "filesystem-nor"
[    2.100585] No NAND device found
[    2.104187] Trying ONFI probe in 16 bits mode, aborting !
[    2.109893] No NAND device found
[    2.114166] OneNAND driver initializing
[    2.118804] omap2-onenand omap2-onenand: initializing on CS2, phys base 0x20000000, virtual base d0880000, freq 0 MHz
[    2.130218] Muxed OneNAND 256MB 1.8V 16-bit (0x40)
[    2.135253] OneNAND version = 0x002c
[    2.140991] Scanning device for bad blocks
[    2.157745] OneNAND eraseblock 205 is an initial bad block
[    2.174102] OneNAND eraseblock 390 is an initial bad block
[    2.185363] OneNAND eraseblock 486 is an initial bad block
[    2.194702] OneNAND eraseblock 547 is an initial bad block
[    2.206329] OneNAND eraseblock 651 is an initial bad block
[    2.213439] OneNAND eraseblock 674 is an initial bad block
[    2.259613] OneNAND eraseblock 1398 is an initial bad block
[    2.301971] 5 ofpart partitions found on MTD device omap2-onenand
[    2.308380] Creating 5 MTD partitions on "omap2-onenand":
[    2.314147] 0x000000000000-0x000000080000 : "xloader-onenand"
[    2.325622] 0x000000080000-0x0000000c0000 : "bootloader-onenand"
[    2.337219] 0x0000000c0000-0x0000000e0000 : "params-onenand"
[    2.348480] 0x0000000e0000-0x0000002e0000 : "kernel-onenand"
[    2.360382] 0x0000002e0000-0x000010000000 : "filesystem-onenand"
[    2.384552] omap2_mcspi spi.11: pins are not configured from the driver
[    2.394165] omap2_mcspi spi.12: pins are not configured from the driver
[    2.403106] omap2_mcspi spi.13: pins are not configured from the driver
[    2.411834] omap2_mcspi spi.14: pins are not configured from the driver
[    2.428222] usbcore: registered new interface driver asix
[    2.434753] usbcore: registered new interface driver ax88179_178a
[    2.442382] usbcore: registered new interface driver cdc_ether
[    2.449188] usbcore: registered new interface driver smsc95xx
[    2.456024] usbcore: registered new interface driver net1080
[    2.462707] usbcore: registered new interface driver cdc_subset
[    2.469512] usbcore: registered new interface driver zaurus
[    2.476379] usbcore: registered new interface driver cdc_ncm
[    2.485351] usbcore: registered new interface driver cdc_wdm
[    2.491485] Initializing USB Mass Storage driver...
[    2.497375] usbcore: registered new interface driver usb-storage
[    2.503814] USB Mass Storage support registered.
[    2.509368] usbcore: registered new interface driver usbtest
[    2.518371] mousedev: PS/2 mouse device common for all mice
[    2.532562] twl_rtc rtc.17: Power up reset detected.
[    2.538726] twl_rtc rtc.17: Enabling TWL-RTC
[    2.548553] twl_rtc rtc.17: rtc core: registered rtc.17 as rtc0
[    2.557189] i2c /dev entries driver
[    2.566284] Driver for 1-wire Dallas network protocol.
[    2.577667] omap_wdt: OMAP Watchdog Timer Rev 0x31: initial timeout 60 sec
[    2.592773] omap-dma-engine 48056000.dma-controller: allocating channel for 62
[    2.600738] omap-dma-engine 48056000.dma-controller: allocating channel for 61
[    2.612396] omap_hsmmc mmc.15: pins are not configured from the driver
[    2.667449] ledtrig-cpu: registered to indicate activity on CPUs
[    2.676300] usbcore: registered new interface driver usbhid
[    2.682281] usbhid: USB HID core driver
[    2.690795] oprofile: using arm/armv7
[    2.695739] TCP: cubic registered
[    2.699249] Initializing XFRM netlink socket
[    2.704162] NET: Registered protocol family 17
[    2.708984] NET: Registered protocol family 15
[    2.714263] Key type dns_resolver registered
[    2.718872] VFP support v0.3: implementor 41 architecture 3 part 30 variant c rev 1
[    2.727172] ThumbEE CPU extension supported.
[    2.738586] VUSB3V1: disabling
[    2.742706] VUSB1V8: disabling
[    2.746582] VUSB1V5: disabling
[    2.750793] VPLL2: disabling
[    2.754699] VDAC: disabling
[    2.764526] mmc0: SD Status: Invalid Allocation Unit size.
[    2.772277] twl_rtc rtc.17: setting system clock to 2000-01-01 00:00:00 UTC (946684800)
[    2.782043] mmc0: host does not support reading read-only switch. assuming write-enable.
[    2.793182] mmc0: new high speed SD card at address b368
[    2.802612] mmcblk0: mmc0:b368 SD1GB 952 MiB 
[    2.814208]  mmcblk0: p1 p2
[   14.917297] Freeing init memory: 5608K
Kumar, Anil March 13, 2013, 2:50 a.m. UTC | #8
On Tue, Mar 12, 2013 at 14:20:48, Javier Martinez Canillas wrote:
> On Tue, Mar 12, 2013 at 3:42 AM, Kumar, Anil <anilkumar.v@ti.com> wrote:
> >
> > On Mon, Mar 11, 2013 at 23:23:32, Hunter, Jon wrote:
> >>
> >> On 03/08/2013 08:25 PM, Anil Kumar wrote:
> >> > Hi Jon,
> >> >
> >> > On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
> >> >> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
> >> >> of RAM and uses the TWL4030 power management IC.
> >> >
> >> > I think this board support should be in separate patch series with
> >> > related patches.
> >>
> >> Well I wanted to keep them altogether so that I can send a pull request
> >> to Benoit and Tony.
> >
> > Sorry, but can you please tell what makes you to think that you
> > can send pull request only when they are altogether ?
> >
> > Is there any logical dependency with other patches except
> > "[PATCH 6/9] ARM: dts: Add OMAP3430 SDP flash memory bindings" is on
> > top of this patch ?
> >
> >>
> >> >>
> >> >> Signed-off-by: Jon Hunter <jon-hunter@ti.com>
> >> >> ---
> >> >>  arch/arm/boot/dts/Makefile         |    1 +
> >> >>  arch/arm/boot/dts/omap3430-sdp.dts |   46 ++++++++++++++++++++++++++++++++++++
> >> >>  2 files changed, 47 insertions(+)
> >> >>  create mode 100644 arch/arm/boot/dts/omap3430-sdp.dts
> >> >>
> >> >> diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
> >> >> index 9c62558..89013ed 100644
> >> >> --- a/arch/arm/boot/dts/Makefile
> >> >> +++ b/arch/arm/boot/dts/Makefile
> >> >> @@ -119,6 +119,7 @@ dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
> >> >>         omap3-beagle-xm.dtb \
> >> >>         omap3-evm.dtb \
> >> >>         omap3-tobi.dtb \
> >> >> +       omap3430-sdp.dtb \
> >> >>         omap4-panda.dtb \
> >> >>         omap4-panda-a4.dtb \
> >> >>         omap4-panda-es.dtb \
> >> >> diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
> >> >> new file mode 100644
> >> >> index 0000000..be0650d
> >> >> --- /dev/null
> >> >> +++ b/arch/arm/boot/dts/omap3430-sdp.dts
> >> >> @@ -0,0 +1,46 @@
> >> >> +/*
> >> >> + * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
> >> >> + *
> >> >> + * This program is free software; you can redistribute it and/or modify
> >> >> + * it under the terms of the GNU General Public License version 2 as
> >> >> + * published by the Free Software Foundation.
> >> >> + */
> >> >> +/dts-v1/;
> >> >> +
> >> >> +/include/ "omap3.dtsi"
> >> >> +
> >> >> +/ {
> >> >> +       model = "TI OMAP3430 SDP";
> >> >> +       compatible = "ti,omap3430-sdp", "ti,omap3";
> >> >
> >> > I have not seen any related changes in "board-generic.c" for your board.
> >> > So just wanted know, how this board is booting ?
> >>
> >> If you look at board-generic.c you will see that "ti,omap3" will match
> >> the OMAP3 generic machine. So you don't need to modify the board-generic.c.
> >
> > According to this omap3-beagle.dts and omap3-beagle-xm.dts are also
> > booting in some way. So it is not clear to me, why there two
> > "DT_MACHINE_START" for omap3. I have seen there is only one
> > different in "init_time" for the same.
> >
> 
> Hi Anil,
> 
> You may take a look to commit:
> 
> 7dd9d50 ARM: OMAP3: Add generic machine descriptor for boards with
> OMAP3 GP device
> 
> So, the second DT_MACHINE_START is meant to be used by OMAP3 boards
> which use GP devices and this is not the case for "ti,omap3430-sdp"
> afaiu.
> 
> I wonder if instead of adding each OMAP3 board with GP devices such as
> "ti,omap3-beagle", is not better to have a "ti,omap3-gp" compatible
> property.

Sound good to me.

@Benoit,

Is this makes any sense for you?

> 
> The whole point of DT is to decouple the hardware description from the
> kernel code so in general we should use the more generic compatible
> string ("ti,omap3") unless the hardware has some specifics that have
> to be addressed, such as these boards that use GP devices.

Thanks you very much. It really help full for me.

Thanks,
Anil
Kumar, Anil March 13, 2013, 2:59 a.m. UTC | #9
On Wed, Mar 13, 2013 at 02:57:04, Hunter, Jon wrote:
> 
> On 03/11/2013 09:42 PM, Kumar, Anil wrote:
> > 
> > On Mon, Mar 11, 2013 at 23:23:32, Hunter, Jon wrote:
> >>
> >> On 03/08/2013 08:25 PM, Anil Kumar wrote:
> >>> Hi Jon,
> >>>
> >>> On Fri, Mar 8, 2013 at 10:57 PM, Jon Hunter <jon-hunter@ti.com> wrote:
> >>>> Adds basic device-tree support for OMAP3430 SDP board which has 256MB
> >>>> of RAM and uses the TWL4030 power management IC.
> >>>
> >>> I think this board support should be in separate patch series with
> >>> related patches.
> >>
> >> Well I wanted to keep them altogether so that I can send a pull request
> >> to Benoit and Tony.
> > 
> > Sorry, but can you please tell what makes you to think that you
> > can send pull request only when they are altogether ?
> 
> That's not the point.
>  
> > Is there any logical dependency with other patches except 
> > "[PATCH 6/9] ARM: dts: Add OMAP3430 SDP flash memory bindings" is on 
> > top of this patch ?
> 
> Per the $subject of the series these a various DT patches I have pending.
> Yes I could break this series up into many separate series, one for PMU,
> one for DMA, one for GPMC, one for OMAP3 SDP, but I thought it would be
> easier for Tony and Benoit to pull as a single series.

I am really Sorry, If I said any nonsense here. I did not know that 
we can do like that also.

Thanks,
Anil
diff mbox

Patch

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index 9c62558..89013ed 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -119,6 +119,7 @@  dtb-$(CONFIG_ARCH_OMAP2PLUS) += omap2420-h4.dtb \
 	omap3-beagle-xm.dtb \
 	omap3-evm.dtb \
 	omap3-tobi.dtb \
+	omap3430-sdp.dtb \
 	omap4-panda.dtb \
 	omap4-panda-a4.dtb \
 	omap4-panda-es.dtb \
diff --git a/arch/arm/boot/dts/omap3430-sdp.dts b/arch/arm/boot/dts/omap3430-sdp.dts
new file mode 100644
index 0000000..be0650d
--- /dev/null
+++ b/arch/arm/boot/dts/omap3430-sdp.dts
@@ -0,0 +1,46 @@ 
+/*
+ * Copyright (C) 2013 Texas Instruments Incorporated - http://www.ti.com/
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+/dts-v1/;
+
+/include/ "omap3.dtsi"
+
+/ {
+	model = "TI OMAP3430 SDP";
+	compatible = "ti,omap3430-sdp", "ti,omap3";
+
+	memory {
+		device_type = "memory";
+		reg = <0x80000000 0x10000000>; /* 256 MB */
+	};
+};
+
+&i2c1 {
+	clock-frequency = <2600000>;
+
+	twl: twl@48 {
+		reg = <0x48>;
+		interrupts = <7>; /* SYS_NIRQ cascaded to intc */
+		interrupt-parent = <&intc>;
+	};
+};
+
+/include/ "twl4030.dtsi"
+
+&mmc1 {
+	vmmc-supply = <&vmmc1>;
+	vmmc_aux-supply = <&vsim>;
+	bus-width = <8>;
+};
+
+&mmc2 {
+	status = "disabled";
+};
+
+&mmc3 {
+	status = "disabled";
+};