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| author | Hannes Petermaier <oe5hpm@oevsv.at> | 2015-04-24 14:49:37 +0200 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2015-05-08 17:24:17 -0400 |
| commit | 99f724721130d8606e04c3bd46e7232db06c4dad (patch) | |
| tree | ad0daff2164b74198a396490a482aca29c2ce911 /include/configs/tseries.h | |
| parent | 10c63f2ebe1172864ff0e0406c29759044bc420e (diff) | |
| download | blackbird-obmc-uboot-99f724721130d8606e04c3bd46e7232db06c4dad.tar.gz blackbird-obmc-uboot-99f724721130d8606e04c3bd46e7232db06c4dad.zip | |
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/tseries.h')
| -rw-r--r-- | include/configs/tseries.h | 4 |
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; " \ |
