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authorRahul Saxena <rahul.saxena@intel.com>2013-02-09 00:15:25 (GMT)
committerTom Zanussi <tom.zanussi@linux.intel.com>2013-02-12 16:13:10 (GMT)
commitd38b102cb9f3c269391d026d2022f10a6e1b1f11 (patch)
treeae95473032f851ddd894beeed9a60c0e463a514d
parent0d850c9068a11f2d0907e3987de69c645ff8906a (diff)
downloadmeta-intel-d38b102cb9f3c269391d026d2022f10a6e1b1f11.tar.gz
meta-cedartrail: Update README with workaround for Yocto Bugzilla #3607
The PVR driver has an issue that for some systems it causes it to incorrectly assume that an LVDS display is connected while in fact a VGA display is connected and vice versa. The README file is updated with the work-around for this issue. Signed-off-by: Rahul Saxena <Rahul.Saxena@intel.com> Signed-off-by: Tom Zanussi <tom.zanussi@linux.intel.com>
-rwxr-xr-xmeta-cedartrail/README27
1 files changed, 26 insertions, 1 deletions
diff --git a/meta-cedartrail/README b/meta-cedartrail/README
index 0d166b2..e394faf 100755
--- a/meta-cedartrail/README
+++ b/meta-cedartrail/README
@@ -51,7 +51,7 @@ Table of Contents
51 51
52 I. Building the meta-cedartrail BSP layer 52 I. Building the meta-cedartrail BSP layer
53II. Booting the images in /binary 53II. Booting the images in /binary
54 54III. Miscellaneous Notes
55 55
56I. Building the meta-cedartrail BSP layer 56I. Building the meta-cedartrail BSP layer
57========================================= 57=========================================
@@ -188,3 +188,28 @@ EXTRA_IMAGE_FEATURES = "debug-tweaks"
188and change above line to.. 188and change above line to..
189 189
190EXTRA_IMAGE_FEATURES = "debug-tweaks tools-testapps" 190EXTRA_IMAGE_FEATURES = "debug-tweaks tools-testapps"
191
192
193Work Around for VGA and LVDS Display issue in PVR driver
194--------------------------------------------------------
195
196The PVR driver has a issue that for some systems it causes
197it to incorrectly assume that a LVDS display is connected
198while infact a VGA display is connected and Vice Versa.
199If your VGA or LVDS display does not work with
200"cedartrail" MACHINE, then if you have connected a VGA display,
201add the following to the kernel command line:
202
203video=LVDS-1:d video=VGA-1:e
204
205If you have connected a LVDS display, add the following to
206the kernel command line:
207
208video=LVDS-1:e video=VGA-1:d
209
210The kernel boot command line can be updated before BSP build by
211editing the "APPEND +=..." line in conf/machine/cedartrail.conf file.
212
213The kernel command line can also be edited after a image is built by
214editing the syslinux.cfg file in the USB flash device on which
215the image is installed.