[PATCH v2] ARM: i.MX: sabresd: Add support for i.MX6QP board variant

[Bastian Krause]

On 4/15/21 5:31 PM, Lucas Stach wrote:
> Am Donnerstag, dem 15.04.2021 um 17:12 +0200 schrieb Sascha Hauer:
>> On Thu, Apr 15, 2021 at 04:59:30PM +0200, Lucas Stach wrote:
>>> Am Donnerstag, dem 15.04.2021 um 16:03 +0200 schrieb Sascha Hauer:
>>>> The SabreSD comes with different SoC variants. This patch adds support
>>>> for the i.MX6QP based board. the DCD data has been taken from U-Boot
>>>> 2021.04
>>>>
>>>> Signed-off-by: Sascha Hauer <s.hauer at pengutronix.de>
>>>> ---
>>>>
>>> [...]
>>>> new file mode 100644
>>>> index 0000000000..52cc8aa73b
>>>> --- /dev/null
>>>> +++ b/arch/arm/dts/imx6qp-sabresd.dts
>>>> @@ -0,0 +1,42 @@
>>>> +/*
>>>> + * Copyright 2012 Freescale Semiconductor, Inc.
>>>> + * Copyright 2011 Linaro Ltd.
>>>> + *
>>>> + * The code contained herein is licensed under the GNU General Public
>>>> + * License. You may obtain a copy of the GNU General Public License
>>>> + * Version 2 or later at the following locations:
>>>> + *
>>>> + * http://www.opensource.org/licenses/gpl-license.html
>>>> + * http://www.gnu.org/copyleft/gpl.html
>>>> + */
>>>> +
>>>> +#include <arm/imx6qp-sabresd.dts>
>>>> +
>>>> +/ {
>>>> +	model = "Freescale i.MX6 Quad SABRE Smart Device Board";
>>>> +	compatible = "fsl,imx6q-sabresd", "fsl,imx6q";
>>>
>>> I'm not sure I like this overwriting of the compatible string. AFAICS
>>> we don't have any instances for "fsl,imx6qp" compatible checks in
>>> either Barebox or Linux kernel, so it shouldn't cause any immediate
>>> damage, but this still feels wrong.
>>
>> It's overwritten with the same strings as the included upstream dts has.
>> Anyway, as you say overwriting them here seems wrong. I removed it.
> 
> You had me confused for bit here, so I just checked and the compatible
> in the included upstream dts is different, as expected:
> 
> compatible = "fsl,imx6qp-sabresd", "fsl,imx6qp";
> 
> So now that you removed those lines, does you board file need fixing
> for the different compatibles?

My board works fine (bootspec-wise) with the dropped compatible.

Regards,
Bastian

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