Hi Lukasz, On 14 April 2014 23:25, Lukasz Majewski <l.majew...@samsung.com> wrote:
> Hi Simon, > > > Hi Lukasz, > > > > On 14 April 2014 01:17, Lukasz Majewski <l.majew...@samsung.com> > > wrote: > > > > [snip[ > > > > I think your questions are mostly answered but I wanted to chime in > > on a few. > > > > What is wrong with specifying the bank field? > > > Why your gpio command cannot use the bank approach? > > > > > > > U-Boot has a generic GPIO API and we should try to use it where > > possible. This has been a long-standing TODO for exynos. > > I'm also fully aware that Exynos suffers from inconsistent gpio API. > However, I'm very glad that with Akshay's and our effort this goal > will be accomplished :-) > > > > > > > > > > > And one more question: Is this work compliant with new driver model, > > > which will be accepted at the merge window after the v2014.04 > > > release? > > > > > > If not, then there is no point to review this code, since GPIO would > > > need to be adjusted to use this framework. > > > > > > > The driver model framework is already in mainline. > > I was rather thinking about the "big switch" as we did with KBUILD > after the v2014.01. Anyway, I'm looking forward to see the wide > deployment of device model in u-boot. > I don't expect a big switch. Each subsystem needs to add support for it, and then (as a separate step) each driver needs to be ported into the new uclass. So it will likely be an incremental effort. > > At present only > > sandbox uses it for GPIO. I started looking at exynos since I thought > > it might be quite easy to convert, but found that the generic GPIO > > stuff was still not merged. > > > > This series will make it much easier to convert exynos GPIO to driver > > model, since we can just change the driver. > > Thanks for clarification. > I'm probably going to take a look at Tegra while waiting for this series to land. Let's see how it goes. Regards, Simon
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