Re: [PATCH v13 1/2] drm/tegra: dc: Support memory bandwidth management

2021-03-08 Thread Dmitry Osipenko
06.03.2021 02:02, Michał Mirosław пишет: > On Fri, Mar 05, 2021 at 12:45:51AM +0300, Dmitry Osipenko wrote: >> 04.03.2021 02:08, Michał Mirosław пишет: >>> On Tue, Mar 02, 2021 at 03:44:44PM +0300, Dmitry Osipenko wrote: Display controller (DC) performs isochronous memory transfers, and thus,

Re: [PATCH v13 1/2] drm/tegra: dc: Support memory bandwidth management

2021-03-05 Thread Michał Mirosław
On Fri, Mar 05, 2021 at 12:45:51AM +0300, Dmitry Osipenko wrote: > 04.03.2021 02:08, Michał Mirosław пишет: > > On Tue, Mar 02, 2021 at 03:44:44PM +0300, Dmitry Osipenko wrote: > >> Display controller (DC) performs isochronous memory transfers, and thus, > >> has a requirement for a minimum memory

Re: [PATCH v13 1/2] drm/tegra: dc: Support memory bandwidth management

2021-03-04 Thread Dmitry Osipenko
04.03.2021 02:08, Michał Mirosław пишет: > On Tue, Mar 02, 2021 at 03:44:44PM +0300, Dmitry Osipenko wrote: >> Display controller (DC) performs isochronous memory transfers, and thus, >> has a requirement for a minimum memory bandwidth that shall be fulfilled, >> otherwise framebuffer data can't

Re: [PATCH v13 1/2] drm/tegra: dc: Support memory bandwidth management

2021-03-03 Thread Michał Mirosław
On Tue, Mar 02, 2021 at 03:44:44PM +0300, Dmitry Osipenko wrote: > Display controller (DC) performs isochronous memory transfers, and thus, > has a requirement for a minimum memory bandwidth that shall be fulfilled, > otherwise framebuffer data can't be fetched fast enough and this results > in a

[PATCH v13 1/2] drm/tegra: dc: Support memory bandwidth management

2021-03-02 Thread Dmitry Osipenko
Display controller (DC) performs isochronous memory transfers, and thus, has a requirement for a minimum memory bandwidth that shall be fulfilled, otherwise framebuffer data can't be fetched fast enough and this results in a DC's data-FIFO underflow that follows by a visual corruption. The Memory