Hi, On Mon, Apr 1, 2019 at 5:18 PM Douglas Anderson <dianders@xxxxxxxxxxxx> wrote: > > Let's document the display timings that most veyron chromebooks (like > jaq, jerry, mighty, speedy) have been using out in the field. This > uses the standard blankings but a slightly slower clock rate, thus > getting a refresh rate 58.3 Hz. > > NOTE: this won't really do anything except cause DRM to properly > report the refresh rate since vop_crtc_mode_fixup() was rounding the > pixel clock to 74.25 MHz anyway. Apparently the adjusted rate isn't > exposed to userspace so it's important that the rate we're trying to > achieve is mostly right. I just thought it would be worth mentioning that I have picked & tested a close to 60Hz mode on two veyron speedys of mine, but thought it too much effort to try and upstream, especially as it was done as a change to the actual panel info: https://github.com/urjaman/linux/commit/23d46278911e18df138b7adde1bebc23f606baae The difference would be in this format just setting hfront-porch = 87 and vback-porch = 14. Anyways the point is: I support moving this mode info into the dts, and I'd like to know how if at all should i go about getting a 60Hz(ish) mode upstreamed? -- Urja Rannikko _______________________________________________ Linux-rockchip mailing list Linux-rockchip@xxxxxxxxxxxxxxxxxxx http://lists.infradead.org/mailman/listinfo/linux-rockchip
