linux-kernel - Re: [PATCH] ARM: OMAP2+: am335x-bone*: add DT for BeagleBone Black

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Message-ID: <52298906.6040800@ti.com>
Date:	Fri, 6 Sep 2013 13:19:26 +0530
From:	George Cherian <george.cherian@...com>
To:	Koen Kooi <koen@...inion.thruhere.net>
CC:	<linux-omap@...r.kernel.org>, <bcousson@...libre.com>,
	<tony@...mide.com>, <rob.herring@...xeda.com>,
	<pawel.moll@....com>, <mark.rutland@....com>,
	<swarren@...dotorg.org>, <ijc+devicetree@...lion.org.uk>,
	<linux@....linux.org.uk>, <devicetree@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <olof@...om.net>
Subject: Re: [PATCH] ARM: OMAP2+: am335x-bone*: add DT for BeagleBone Black

On 9/6/2013 12:40 PM, Koen Kooi wrote:
> Op 6 sep. 2013, om 08:57 heeft George Cherian <george.cherian@...com> het volgende geschreven:
>
>> On 9/6/2013 12:03 PM, Koen Kooi wrote:
>>> The BeagleBone Black is basically a regular BeagleBone with eMMC and HDMI added,
>>> so create a common dtsi both can use. MMC support for AM335x still isn't in, so
>>> only the LDO change has been added.
>>>
>>> Signed-off-by: Koen Kooi <koen@...inion.thruhere.net>
>>> ---
>>>   .../{am335x-bone.dts => am335x-bone-common.dtsi}   |   3 -
>>>   arch/arm/boot/dts/am335x-bone.dts                  | 256 +--------------------
>>>   arch/arm/boot/dts/am335x-boneblack.dts             |  18 ++
>>>   3 files changed, 19 insertions(+), 258 deletions(-)
>>>   copy arch/arm/boot/dts/{am335x-bone.dts => am335x-bone-common.dtsi} (99%)
>>>   create mode 100644 arch/arm/boot/dts/am335x-boneblack.dts
>> How did you test am335x-boneblack.dtb? where are the Makefile changes for boneblack?
> Ah, I missed the makefile in my commit. I have a bunch of other patches on top to make more stuff work.
>
> [..]
>
>>> --- /dev/null
>>> +++ b/arch/arm/boot/dts/am335x-boneblack.dts
>>> @@ -0,0 +1,18 @@
>>> +/*
>>> + * Copyright (C) 2012 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 "am33xx.dtsi"
>> Why cant we add am33xx.dtsi  in am335x-bone-common.dtsi ?
> That didn't work when I tried it. It did work before the preprocessor changes when using /include/

It will work......
>
>>> +#include "am335x-bone-common.dtsi"
>>> +
>>> +&ldo3_reg {
>>> +	regulator-min-microvolt = <1800000>;
>>> +	regulator-max-microvolt = <1800000>;
>>> +	regulator-always-on;
>>> +};
>>> +
>> With this ldo values mmc was not working for me on Boneblack.
>> got it working with
>>
>> &ldo3_reg {
>> 	regulator-min-microvolt = <1800000>;
>> 	regulator-max-microvolt = <3300000>;
>> 	regulator-always-on;
>> };
> That LDO is shared, the other consumer will get fried if you use 3.3V. I forget if it's DDR3 or HDMI.


-- 
-George

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