Hi Tom,
On Tue, Nov 26, 2019 at 09:11:51AM +0100, Marek Vasut wrote:
On 11/26/19 12:16 AM, Heinrich Schuchardt wrote:
Dear maintainers,
Hi,
we have been trying to move to the driver model for several years now. Starting in 2018 we have added warnings to the Makefile that boards not supporting the driver model will be eliminated. Still 24 % of the configuration files have not been converted and do not even use CONFIG_DM=y.
If we want to get rid of legacy drivers, at some point we have to remove the 347 configuration files in the list below not using the driver model.
I suggest to do this directly after the release of v2020.01 scheduled January 6th.
This should not stop the maintainers from reinserting the boards after conversion to the driver model.
Some boards just cannot accommodate this DM stuff. For those boards, it's just bloat without any useful added value. Hence, these boards would be removed because they cannot accommodate arbitrary bloat. This makes U-Boot not-so-universal bootloader anymore, but rather a bloated one.
I don't think we can force boards out or impose DM on everyone unless we can solve this bloat issue first.
As someone who was involved in creating this DM stuff, do you have some ideas on addressing things? Given that you're responsible for a number of these platforms and can test out some ideas on them, what are you suggesting?
I can speak of some i.MX28 board(s). If there is a will one can try to use OF_PLATDATA without the full blown support of FDT (patches recently added to not include some not necessary stuff).
(The board which uses this approach still waits for SPL_DM_GPIO definition in Kconfig to be re-posted to ML)
However, I don't know if this would work for all kinds of _bloat_ mentioned by Marek.
Best regards,
Lukasz Majewski
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