[PATCH] arm64: dts: add all hi6220 uart nodes

[Tyler Baker]

On 30 September 2015 at 12:18, Mark Brown <broonie at kernel.org> wrote:
> On Wed, Sep 30, 2015 at 11:12:58AM -0700, Tyler Baker wrote:
>> On 30 September 2015 at 10:31, Mark Brown <broonie at kernel.org> wrote:
>
>> + Peter as he has been submitting u-boot patches recently for the HiKey.
>
>> Obviously, both UEFI and u-boot can be configured to use either UART,
>> and at the moment u-boot defaults to using the on board UART. Whereas
>> UEFI is using UART1 on the LS connector. I'm fine with switching the
>> console default to use the UART1 on the LS connector as long as there
>> is agreement to do so.
>
> Given that UEFI is switching and the requirement for soldering to get to
> the on board UART it does seem to make sense, though it will create some
> pain for current users.
>
>> > While we're at it there was a recent talk which mentioned a fairly large
>> > amount of functionality that's apparently already "upstream" for this
>> > device but not included in the DT, assuming that means that driver
>> > support is there it would be good to add the corresponding DT.
>
>> Indeed, I think this comment is targeted to toward the d410c though as
>> there are drivers for eMMC, and microsd drivers upstream but no DT
>> bindings. I do not believe currently this is the case for HiKey.
>
> My understanding is that it applies to both with slightly different
> driver sets, the slides aren't online yet (!) but if you look at 10:52
> or so in the video we should have SD/eMMC on HiKey in v4.1 with thermal
> and CPUfreq added in v4.2.  It also looks like there's just some DT
> additions needed to enable reset, cpuidle and CPU hotplug using generic
> code (mainly the constants for PSCI I expect).

I just skimmed the video and I see your point. I'll need to
investigate a bit but I'm up for sending some follow up patches to get
these drivers functioning. First lets get the UART working :)

Cheers,

Tyler