On 19 January 2015 at 10:29, Hans de Goede <hdego...@redhat.com> wrote: > Hi, > > > On 19-01-15 10:16, Hans de Goede wrote: >> >> Hi, >> >> On 19-01-15 10:06, Michal Suchanek wrote: >>> >>> On 19 January 2015 at 05:29, Siarhei Siamashka >>> <siarhei.siamas...@gmail.com> wrote: >>>> >>>> On Sun, 04 Jan 2015 20:49:38 +0100 >>>> Hans de Goede <hdego...@redhat.com> wrote: >>>> >>>>> Hi, >>>>> >>>>> On 04-01-15 20:19, Michal Suchanek wrote: >>>>>> >>>>>> Setting magic 'reserved' hpcr bit on sun5i DEBE seems required for >>>>>> smooth HDMI scanout of large frambuffer (eg. 1080p). >>>>>> >>>>>> This fix comes at the cost of some overall memory bandwidth so it >>>>>> might be appropriate to detect a10s and only apply there (and not >>>>>> a13). >>>>> >>>>> >>>>> Hmm, Sairhei is the expert on this, adding him to the Cc. Sairhei, what >>>>> do you think of the proposed change ? >>>> >>>> >>>> I don't have A10s hardware, so have no idea and can't test anything >>>> myself. >>>> >>>> It would be great to have a better description of what exactly is >>>> happening before the patch. And precisely how the patch is helping. >>>> A description of the test setup and benchmark numbers would be >>>> appreciated. And it would be perfect if somebody else could reproduce >>>> the test and confirm the results. >>> >>> >>> The result is that with full HD HDMI output lima-memtester cube jumps >>> without the patch and does not jump with the patch. I have only 1 A10s >>> board. >> >> >> Since you're running lima-memtester, I assume you're using a sunxi-3.4 >> kernel, correct? >> >> Looking at the patch you're not modifying DEBE DRAM priority, but rather >> DEFE priority. >> >> Can you check the fex file and see what fb0_scaler_mode_enable is set too >> ? >> >> If it is not enabled, it is weird that this fix helps, if it is enabled, >> then this fix shouldn't be necessary, but maybe things are different on >> sun5i vs sun4i. >> >> Regardless can you try with fb0_scaler_mode_enable inverted from what it >> is now, it would be good to know if it has any impact on sun5i. > > > Also instead of changing the priority to 0x1037, can you try changing it to > 0x5031, this is what sun4i uses after Siarhei's fixes, and perhaps it is the > right value to use for DEFE everywhere in general. >
That did not work for me. Thanks Michal _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
