On Tue, Jan 17, 2017 at 12:22 PM, Neil Armstrong <narmstrong@xxxxxxxxxxxx> wrote: > On 01/17/2017 10:38 AM, Maxime Ripard wrote: >> Hi, >> >> On Mon, Jan 16, 2017 at 08:49:06PM +0200, Krzysztof Kozlowski wrote: >>> On Mon, Jan 16, 2017 at 02:24:23PM +0100, Maxime Ripard wrote: >>>> The ARM Mali Utgard GPU family is embedded into a number of SoCs from >>>> Allwinner, Amlogic, Mediatek or Rockchip. >>>> >>>> Add a binding for the GPU of that family. >>>> >>>> Signed-off-by: Maxime Ripard <maxime.ripard@xxxxxxxxxxxxxxxxxx> >>>> --- >>>> .../devicetree/bindings/gpu/arm,mali-utgard.txt | 76 ++++++++++++++++++++++ >>>> 1 file changed, 76 insertions(+) >>>> create mode 100644 Documentation/devicetree/bindings/gpu/arm,mali-utgard.txt >>> >>> Do you have a driver in kernel which will implement these bindings? >> >> No, but we have bindings for out-of-tree drivers already. >> >>> Defining them for out-of-tree driver does not bring any benefits >>> (3rd party driver will not respect them anyway). >> >> You could see it the other way around too. The out-of-tree drivers >> don't respect it at the moment because there's no binding to respect. >> >> And at least for us, we definitely plan on doing that. >> >> Maxime > > Hi Maxime, Krzysztof, > > We hope this will be accepted so it will solve the same issue we have on Amlogic SoCs > and all the other mali powered SoCs. It will be helpful also for other SoCs using Mali 400 (e.g. Exynos3250, Exynos4412). > Having mainline bindings will forcre out-of-tree driver to respect those bindings > and remove a dts out-of-tree patch aswell. I would argue here over the word "force". Having bindings defined here does not force anyone into anything. The out-of-tree can do whatever they want. It is a wish from kernel side - it might be respected but it might not. Just to be sure - I am not opposed against. Some time ago I wanted Mali400 to be upstreamed but with current policy about user-space side it is not possible. Best regards, Krzysztof -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
