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.ripard@xxxxxxxxxxx> 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 Maxime -- Maxime Ripard, Bootlin (formerly Free Electrons) Embedded Linux and Kernel engineering https://bootlin.com
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