From 6515032e3b88f0774f93fb05deaf20e48a515fe4 Mon Sep 17 00:00:00 2001 From: Hans de Goede Date: Tue, 13 Jan 2015 13:21:46 +0100 Subject: sunxi: display: Make lcd display clk phase configurable While running some tests with an Olinuxino-A13-Micro + a 7" Olimex LCD module I noticed that the screen flickered. This is caused by the lcd display clk phase reg value being set to 0, where it should be 1 in this setup. This commit adds a Kconfig option for the lcd display clk phase, so that we can set it per board. This defaults to 1, because looking at all the fex files in sunxi-boards, that is by far the most used value. This commit updated the Ippo and MSI Primo73 tablet defconfigs to override the default of 1 with 0, as that is the correct value for those tablets, this keeps the register settings the same as before this commit. The Olinuxino-A13 defconfigs are not updated, changing the register setting for these boards from 0 to 1, this is intentional. Signed-off-by: Hans de Goede Acked-by: Ian Campbell --- board/sunxi/Kconfig | 7 +++++++ 1 file changed, 7 insertions(+) (limited to 'board/sunxi/Kconfig') diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig index 6a4d764..d4d1fa2 100644 --- a/board/sunxi/Kconfig +++ b/board/sunxi/Kconfig @@ -338,6 +338,13 @@ config VIDEO_LCD_MODE This is in drivers/video/videomodes.c: video_get_params() format, e.g. x:800,y:480,depth:18,pclk_khz:33000,le:16,ri:209,up:22,lo:22,hs:30,vs:1,sync:0,vmode:0 +config VIDEO_LCD_DCLK_PHASE + int "LCD panel display clock phase" + depends on VIDEO + default 1 + ---help--- + Select LCD panel display clock phase shift, range 0-3. + config VIDEO_LCD_POWER string "LCD panel power enable pin" depends on VIDEO -- cgit v1.1