> -----Original Message----- > From: Alex Courbot > Sent: Thursday, August 06, 2015 12:58 AM > To: Tom Warren; Andreas Färber; u-boot@xxxxxxxxxxxxx > Cc: linux-tegra@xxxxxxxxxxxxxxx; gnurou@xxxxxxxxx; Stephen Warren; > Guillaume Gardet > Subject: Re: [U-Boot] [PATCH 0/2] ARM: tegra: enable GPU DT node > > On 08/05/2015 08:24 AM, Tom Warren wrote: > > Alex/Andreas, > > > >> -----Original Message----- > >> From: Tom Warren > >> Sent: Tuesday, August 04, 2015 8:41 AM > >> To: 'Andreas Färber'; u-boot@xxxxxxxxxxxxx > >> Cc: Alex Courbot; linux-tegra@xxxxxxxxxxxxxxx; gnurou@xxxxxxxxx; > >> Stephen Warren; Guillaume Gardet > >> Subject: RE: [U-Boot] [PATCH 0/2] ARM: tegra: enable GPU DT node > >> > >> Andreas, > >> > >>> -----Original Message----- > >>> From: Andreas Färber [mailto:afaerber@xxxxxxx] > >>> Sent: Tuesday, August 04, 2015 6:56 AM > >>> To: u-boot@xxxxxxxxxxxxx > >>> Cc: Alex Courbot; linux-tegra@xxxxxxxxxxxxxxx; gnurou@xxxxxxxxx; > >>> Stephen Warren; Tom Warren; Guillaume Gardet > >>> Subject: Re: [U-Boot] [PATCH 0/2] ARM: tegra: enable GPU DT node > >>> > >>> Am 23.07.2015 um 13:46 schrieb Andreas Färber: > >>>> Am 09.07.2015 um 09:32 schrieb Alexandre Courbot: > >>>>> Tegra124 requires the bootloader to perform VPR initialization, > >>>>> otherwise the GPU cannot be used by the system. Since using the > >>>>> GPU without that initialization results in a hang, the GPU DT node > >>>>> is left disabled, and it is the task of the bootloader to enable > >>>>> it after ensuring it is safe to use the GPU. > >>>>> > >>>>> VPR init is already performed since patch df3443dfa449, but the > >>>>> device tree was left untouched. This patch series performs this > >>>>> last step and prepares the GPU intialization code to receive more > >>>>> code for > >>> newer chips. > >>>> > >>>> Tested-by: Andreas Färber <afaerber@xxxxxxx> > >>>> > >>>> I've tested this patchset on v2015.07 with 4.2.0-rc3-00115-gc5dfd65 > >>>> - with these two patches I get a console login on HDMI again. > >>> > >>> Ping! Independent of the Linux and X11 discussions this thread has > >>> drifted off into, these two patches are still missing in > >>> v2015.10-rc1 and don't apply any more (as reported by Guillaume). > >>> Can you please rebase > >> and merge them? > >> Is that request for me? Sorry, lost track of these patches since it > >> appeared that there was an on-going discussion. > >> If you're sure they're OK within the context of Tegra U-Boot, I'll > >> apply them and send them with the next PR. > >> > >> Tom > > Applied to u-boot-tegra/next (along with some other pending Tegra patches > for clocks/PLL/SPI/ums/etc.). I added T210/P2571 support to this patchset. > > > > PTAL. Also, there doesn't appear to be a 'gpu@0,57000000' property in any > t124/t210 DT file. Is that coming in another patch or one I missed? > > Thanks Tom! I have tried your branch and can confirm it is booting Jetson TK1 as > expected (i.e. the GPU is in a usable state). > > The GPU node is not needed in U-boot's DT files (if that's what you meant). It is > present in the kernel though, and that's the DT my patches will modify. > > Alex. Thanks, Alex. I'll send a PR with your changes later today. Tom -- nvpublic -- To unsubscribe from this list: send the line "unsubscribe linux-tegra" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
