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authorHannes Petermaier <oe5hpm@oevsv.at>2015-04-24 14:49:37 +0200
committerTom Rini <trini@konsulko.com>2015-05-08 17:24:17 -0400
commit99f724721130d8606e04c3bd46e7232db06c4dad (patch)
treead0daff2164b74198a396490a482aca29c2ce911 /include/configs
parent10c63f2ebe1172864ff0e0406c29759044bc420e (diff)
board/BuR/tseries: Add simplefb support
Since the used AM3352 SoC doesn't have GPU it isn't allways necessary to build in complete drm-stuff into linux kernel. In very small applications only we use the simple-framebuffer. So we have 2 use-cases: - device operating on drm-driver (let simplefb node disabled) - device operating on simplefb-driver (activate simplefb node and reserve mem) The decision is made by means of "simplefb" environment variable. simplefb = 0 we don't enable the (maybe) existing simplefb node and all the rest around display is up to the linux-kernel. We just disable the backlight, beceause we do not want see the flicker during take over of drm-driver. simplefb = 1 we enable the (maybe) existing simplefb node and reserve framebuffers size in memory. Signed-off-by: Hannes Petermaier <oe5hpm@oevsv.at>
Diffstat (limited to 'include/configs')
-rw-r--r--include/configs/tseries.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/include/configs/tseries.h b/include/configs/tseries.h
index f2df35834f..c58403fe1d 100644
--- a/include/configs/tseries.h
+++ b/include/configs/tseries.h
@@ -17,6 +17,7 @@
#define CONFIG_AM335X_LCD
#define CONFIG_LCD
#define CONFIG_LCD_ROTATION
+#define CONFIG_LCD_DT_SIMPLEFB
#define CONFIG_SYS_WHITE_ON_BLACK
#define LCD_BPP LCD_COLOR32
@@ -115,6 +116,7 @@
"bootz ${loadaddr} - ${dtbaddr}\0" \
"defboot=run nandboot\0" \
"bootlimit=1\0" \
+ "simplefb=1\0 " \
"altbootcmd=run usbscript\0"
#else
#define NANDARGS ""
@@ -132,10 +134,12 @@
"mmcroot1=setenv bootargs ${optargs_rot} ${optargs} console=${console} " \
"root=/dev/mmcblk0p2 rootfstype=ext4\0" \
"mmcboot0=echo booting Updatesystem from mmc (ext4-fs) ...; " \
+ "setenv simplefb 1; " \
"ext4load mmc 0:1 ${loadaddr} /${kernel}; " \
"ext4load mmc 0:1 ${ramaddr} /${ramdisk}; " \
"run mmcroot0; bootz ${loadaddr} ${ramaddr} ${dtbaddr};\0" \
"mmcboot1=echo booting PPT-OS from mmc (ext4-fs) ...; " \
+ "setenv simplefb 0; " \
"ext4load mmc 0:2 ${loadaddr} /boot/${kernel}; " \
"run mmcroot1; bootz ${loadaddr} - ${dtbaddr};\0" \
"defboot=run logo0 || run logo1; " \