[yocto] [meta-raspberrypi] morty release ?

Mirza Krak mirza.krak at gmail.com
Mon Dec 5 13:46:20 PST 2016


2016-12-05 19:37 GMT+01:00 Khem Raj <raj.khem at gmail.com>:
> On Mon, Dec 5, 2016 at 7:26 AM, Mirza Krak <mirza.krak at gmail.com> wrote:
>> Hi.
>>
>> I have some questions and remarks and hopefully someone here can answer them.
>>
>> The meta-raspberrpi layer is missing a morty release? Any time frame
>> of when this will be added?
>
> We use master as long as possible, when we have a change that makes master
> incompatible with prior releases we branch out for the prior releases
> at that point.

Thank you for the clarification.

>
>>
>> There is currently a issue when using U-boot due to some updates in
>> RPi boot firmware. See [1] and [2]. Which should be noted/resolved
>> before a morty release?
>>
>> To provide some more information about above mentioned problem. If you
>> use the current firmware files (20161030 in meta-raspberrypi) together
>> with U-boot (2016.03) you lose the console on U-boot and on Linux
>> kernel. This is due to the fact that "newer" firmware sets a default
>> uart clock to 48 MHz, but U-boot has a hard-coded value of 3 MHz, and
>> since we yet do not support to "forward" the patched DTB provided by
>> the firmware from U-boot to Linux we also break console on Linux.
>>
>> The "default" values has been updated in Linux, see [2]. But if you
>> use that updated Linux kernel there is a mismatch between u-boot and
>> Linux. Should be noted that U-boot 2016.11 does not have this problem
>> since it does not try to initialize the UART port at all and only
>> relies on firmware to set it up correctly (see [3]).
>
> We should drop 2016.03 and support 2016.11 for keeping it simple.

Should also update Linux which contains the updated default value
(since we do not yet support pass-trough of firmware DTB, I know I
have seen some patches on the mailing list but nothing in upstream
yet).

But U-boot is in meta-openembedded, are you suggesting that we update
it in meta-raspberry? Or updating it in meta-openembedded?

Best Regards
Mirza



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