[RESEND v2 PATCH 00/16] Nokia RX-51: Fix USB TTY console and enable it

[Marek Vasut]

On 2/8/21 11:34 PM, Pali Rohár wrote:
> On Monday 08 February 2021 23:21:38 Pali Rohár wrote:
>> On Monday 08 February 2021 23:15:33 Lukasz Majewski wrote:
>>> Hi Pali,
>>>
>>>>      Resended v2 patch series with fixed commit messages
>>>>
>>>> This patch series fix usbtty code (serial console via USB peripheral
>>>> mode), fix underlying musb peripheral code, fix compilation of
>>>> CONFIG_USB_DEVICE (used by usbtty), remove unused Nokia RX-51 code to
>>>> decrease size of U-Boot binary and finally enable usbtty serial
>>>> console for Nokia RX-51.
>>>>
>>>> With this patch series debugging of Nokia RX-51 can be done also via
>>>> USB serial console.
>>>>
>>>> It fixes also stability of musb code and allows usage of file
>>>> transfers via Kermit protocol on Nokia RX-51. Kermit file transfer
>>>> via U-Boot loadb command is stable on Nokia N900 and gives about
>>>> 52kB/s transfer rate.
>>>>
>>>> On computer this serial console is accessible via /dev/ttyACM0 device.
>>>>
>>>
>>> I've integrated your patchset and now it turns out that the u-boot size
>>> is too big:
>>> https://dev.azure.com/lukma633/U-Boot/_build/results?buildId=24&view=results
>>> https://dev.azure.com/lukma633/U-Boot/_build/results?buildId=24&view=logs&j=9a06d2a9-1498-5de0-2a01-be581d48ba67&t=f9a6b761-daa3-500f-4840-65a939c5040d
>>
>> Ah :-(
>> In November when I sent these patches, U-Boot binary was smaller.
>>
>>> The branch is https://github.com/lmajewski/u-boot-dfu/tree/testing
>>>
>>> Have you experienced similar issues?
>>
>> Yes, memory for U-Boot is limited. It is needed to decrease size of
>> U-Boot binary and then it will work.
>>
>> I will try to look at it later and find some dead code which can be
>> commented or removed to decrease binary size...
> 
> Just a quick test, could you try to add
> 
> CONFIG_OPTIMIZE_INLINING=y
> 
> into configs/nokia_rx51_defconfig file, if it helps?

Surely you can try build-testing the patches yourself ? :-)