[PATCH 2/4] arm64: add basic DTS for i.MX8MQ

[Arnd Bergmann]

On Mon, Jan 22, 2018 at 3:47 PM, Shawn Guo <shawnguo at kernel.org> wrote:
> On Wed, Jan 17, 2018 at 07:32:42PM +0100, Lucas Stach wrote:
>> This adds the basic DTS for the i.MX8MQ.
>> For now only the following peripherals are supported:
>> - IOMUXC (pin controller)
>> - CCM (clock controller)
>> - GPIO
>> - UART
>> - uSDHC (SD/eMMC controller)
>> - FEC (ethernet controller)
>> - i2c
>>
>> This is enough to get a very basic board support up and running.
>>
>> One known limitation is that the driver for the GPC interrupt
>> controller is still missing, rendering the CPU sleep states unusable
>> as there is nothing waking them up anymore. This will be fixed in
>> due course.
>>
>> Signed-off-by: Lucas Stach <l.stach at pengutronix.de>
>> ---
>>  arch/arm64/boot/dts/Makefile             |   1 +
>>  arch/arm64/boot/dts/nxp/imx8mq-pinfunc.h | 632 +++++++++++++++++++++++++++++++
>>  arch/arm64/boot/dts/nxp/imx8mq.dtsi      | 418 ++++++++++++++++++++
>
> So we will have the following two folders for SoCs from the same company.
>
>  arch/arm64/boot/dts/nxp/
>  arch/arm64/boot/dts/freescale/

It might get worse once the sale to Qualcomm goes through and maybe if
Broadcom makes another bid for Qualcomm in a few years ;-)

> I'm a bit uncomfortable with that.  @Arnd, do you have an opinion how we
> should handle them?

It's a recurring problem of course. I have a small preference for just adding
the i.mx files to arch/arm64/boot/dts/freescale/, but I'd leave it up to you.

        Arnd