linux/include/video
Manjunathappa, Prakash fb8fa94319 video: da8xx-fb: configure FIFO threshold to reduce underflow errors
Patch works around the below silicon errata:
During LCDC initialization, there is the potential for a FIFO
underflow condition to occur. A FIFO underflow condition
occurs when the input FIFO is completely empty and the LCDC
raster controller logic that drives data to the output pins
attempts to fetch data from the FIFO. When a FIFO underflow
condition occurs, incorrect data will be driven out on the
LCDC data pins.

Software should poll the FUF bit field in the LCD_STAT register
to check if an error condition has occurred or service the
interrupt if FUF_EN is enabled when FUF occurs. If the FUF bit
field has been set to 1, this will indicate an underflow
condition has occurred and then the software should execute a
reset of the LCDC via the LPSC.

This problem may occur if the LCDC FIFO threshold size
(LCDDMA_CTRL[TH_FIFO_READY]) is left at its default value after
reset. Increasing the FIFO threshold size will reduce or
eliminate underflows. Setting the threshold size to 256 double
words or larger is recommended.

Above issue is described in section 2.1.3 of silicon errata
http://www.ti.com/lit/er/sprz313e/sprz313e.pdf

Signed-off-by: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
Signed-off-by: Manjunathappa, Prakash <prakash.pm@ti.com>
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
2012-07-29 01:11:09 +00:00
..
Kbuild include: replace unifdef-y with header-y 2010-08-14 22:26:51 +02:00
atmel_lcdc.h atmel_lcdfb: implement inverted contrast pwm 2011-03-22 16:23:44 +09:00
aty128.h atyfb: fix header file trailing whitespace 2009-04-01 08:59:26 -07:00
auo_k190xfb.h video: auo_k190x: add code shared by controller drivers 2012-04-29 19:35:35 +00:00
broadsheetfb.h broadsheetfb: support storing waveform 2010-03-12 15:52:34 -08:00
cirrus.h cirrusfb: Laguna chipset 8bpp fix 2009-04-01 08:59:27 -07:00
cvisionppc.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
da8xx-fb.h video: da8xx-fb: configure FIFO threshold to reduce underflow errors 2012-07-29 01:11:09 +00:00
edid.h UAPI: Fix nested __KERNEL__ guards in video/edid.h 2011-12-13 09:26:45 +00:00
epson1355.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
exynos_dp.h video: exynos_dp: fix max loop count in EQ sequence of link training 2012-05-08 17:00:53 +00:00
exynos_mipi_dsim.h video: exynos mipi dsi: support reverse panel type 2012-05-13 13:08:23 +00:00
gbe.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
hecubafb.h fbdev: platforming hecubafb and n411 2008-04-28 08:58:41 -07:00
iga.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
ili9320.h fb: add support for the ILI9320 video display controller 2008-07-24 10:47:40 -07:00
kyro.h Fix common misspellings 2011-03-31 11:26:23 -03:00
mach64.h atyfb: fix CONFIG_ namespace violations 2009-02-05 12:56:48 -08:00
maxinefb.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
mbxfb.h mbxfb: Improvements and new features 2007-10-16 09:43:14 -07:00
metronomefb.h [ARM] 5209/1: metronomefb: changes to use platform framebuffer 2008-08-26 17:01:12 +01:00
mipi_display.h fbdev: add a MIPI DSI header 2010-05-24 08:47:38 +09:00
neomagic.h Fix common misspellings 2011-03-31 11:26:23 -03:00
newport.h Merge branch 'master' into for-next 2011-04-26 10:22:59 +02:00
omap-panel-generic-dpi.h OMAP: DSS2: Move panel-generic-dpi.h to include/video/ 2011-05-11 14:08:51 +03:00
omap-panel-n8x0.h OMAPDSS: Add N800 panel driver 2011-09-30 16:17:30 +03:00
omap-panel-nokia-dsi.h OMAPDSS: DSI: implement generic DSI pin config 2012-05-09 10:53:05 +03:00
omap-panel-picodlp.h OMAP: DSS2: Add picodlp panel driver 2011-09-14 18:08:23 +03:00
omap-panel-tfp410.h OMAPDSS: TFP410: rename dvi files to tfp410 2012-05-09 10:51:05 +03:00
omapdss.h OMAPDSS: DSI: Fix HSYNC, VSYNC and DE polarities between DISPC and DSI 2012-06-29 10:15:54 +03:00
permedia2.h pm2fb: hardware cursor support for the Permedia2 2007-10-16 09:43:18 -07:00
platform_lcd.h lcd: add platform_lcd driver 2008-07-24 10:47:40 -07:00
pm3fb.h pm3fb: header file cleanup 2007-10-16 09:43:18 -07:00
pmag-ba-fb.h [PATCH] DEC PMAG BA frame buffer update 2005-09-05 00:06:03 -07:00
pmagb-b-fb.h [PATCH] DEC PMAGB B framebuffer update 2005-09-05 00:06:03 -07:00
pxa168fb.h pxa168fb: remove useless vsync/hsync invert flag 2009-12-01 09:02:32 +08:00
radeon.h atyfb: fix header file trailing whitespace 2009-04-01 08:59:26 -07:00
s1d13xxxfb.h s1d13xxxfb: drop unused code 2010-12-21 01:05:43 +09:00
sa1100fb.h FB: sa1100: remove global sa1100fb_.*_power function pointers 2012-02-21 11:56:19 +00:00
sgivw.h sgivwfb: Make use of ARRAY_SIZE. 2009-12-04 15:39:52 +01:00
sh_mipi_dsi.h fbdev: sh_mipi_dsi: add extra phyctrl for sh_mipi_dsi_info 2012-03-21 07:24:01 +00:00
sh_mobile_hdmi.h fbdev: sh_mobile_hdmi: add HDMI Control Register support 2012-05-13 13:07:59 +00:00
sh_mobile_lcdc.h fbdev: sh_mobile_lcdc: Implement overlays support 2012-06-20 10:02:54 +02:00
sh_mobile_meram.h sh_mobile_meram: Add direct MERAM allocation API 2012-07-19 02:05:22 +02:00
sisfb.h Fix common misspellings 2011-03-31 11:26:23 -03:00
sstfb.h Fix common misspellings 2011-03-31 11:26:23 -03:00
tdfx.h tdfxfb: move I2C functionality into the tdfxfb 2009-04-07 08:31:08 -07:00
tgafb.h tgafb: actually allocate memory for the pseudo_palette 2007-07-17 10:23:12 -07:00
trident.h tridentfb: add imageblit acceleration for Blade3D family 2008-07-24 10:47:36 -07:00
udlfb.h udlfb: fix hcd_buffer_free panic on unplug/replug 2012-03-01 17:46:27 -08:00
uvesafb.h headers_check fix: video/uvesafb.h 2009-01-31 00:14:52 +05:30
vga.h m68k/video: Create <asm/vga.h> 2012-04-22 20:16:50 +02:00
w100fb.h [PATCH] SharpSL: Abstract c7x0 specifics from Corgi Touchscreen driver 2005-09-13 08:22:31 -07:00