On Fri, Apr 13, 2018 at 5:39 PM, Maxime Ripard <maxime.rip...@bootlin.com> wrote: > On Fri, Apr 13, 2018 at 05:30:04PM +0530, Jagan Teki wrote: >> On Wed, Apr 11, 2018 at 6:13 PM, Maxime Ripard >> <maxime.rip...@bootlin.com> wrote: >> > On Wed, Apr 04, 2018 at 11:57:08AM +0200, Maxime Ripard wrote: >> >> Hi, >> >> >> >> Here is an preliminary version of the MIPI-DSI support for the Allwinner >> >> SoCs. >> >> >> >> This controller can be found on a number of recent SoCs, such as the >> >> A31, A33 or the A64. >> >> >> >> Given the sparse documentation, there's a number of obscure areas, but >> >> the current implementation has been tested with a 4-lanes DSI panel on >> >> an A33. >> >> >> >> The support is a bit rough around the edges at the time, and some >> >> artifacts >> >> are still shown on the screen for some reasons. Wider testing with >> >> different display will hopefully nail those down. >> >> >> >> This needs the regmap_mmio_attach_clk, on its way to Linus in 4.17. >> >> >> >> Let me know what you think, >> >> Maxime >> >> >> >> Changes from v3: >> >> - Rebased on top of current drm-misc-next >> >> - Switched to SPDX license header >> >> - Made the ECC array const >> >> - Split the big DSI patch into two, one to add the DSI driver and one to >> >> add the TCON bits. >> >> - Removed the dithering code >> >> - Changed the DT labels to remove the indices >> >> - Used sleeps instead of delays in the panel driver >> >> - Used the backlight_enable / _disable functions >> >> - Added Chen-Yu's Reviewed-by >> >> >> >> Changes from v2: >> >> - Added a ports node under the DSI node >> >> - Changed the huarui panel driver to an ili9881c driver >> >> - Changed the panel vendor to bananapi >> >> - Made the init table static in the panel driver >> >> - Dropped the huarui vendor patch for the DT doc. >> >> >> >> Changes from v1: >> >> - Rebased on 4.16-rc1 >> >> - Constified a few function arguments and structures >> >> - Reworked the DT binding example a bit >> >> - Reworked the panel driver to check for DSI return codes, and use DCS >> >> helpers when possible >> >> >> >> Maxime Ripard (8): >> >> drm/sun4i: tcon: Add TRI finish interrupt for vblank >> >> dt-bindings: display: Add Allwinner MIPI-DSI bindings >> >> drm/sun4i: Add Allwinner A31 MIPI-DSI controller support >> >> drm/sun4i: Tie the DSI controller in the TCON >> >> dt-bindings: panel: Add the Ilitek ILI9881c panel documentation >> >> drm/panel: Add Ilitek ILI9881c panel driver >> >> ARM: dts: sun8i: a33: Add the DSI-related nodes >> >> [DO NOT MERGE] arm: dts: sun8i: bpi-m2m: Add DSI display >> >> I have reviewed most of the patches and reused for A64 all look fine >> to me (except the panel driver). May be my issue is not relevant to >> this thread, but I'm looking for help If I miss anything for A64 [1] >> and [2] are changes made for A64, the issue is kernel hang while >> loading sun6i_dsi. > > My guess would be that you're not claiming the DE2 SRAM. See: > https://lkml.org/lkml/2018/3/16/1096
Thanks Maxime, will try.
