830e5227d4
The patch [1], which is required for DRM to work properly, has been
merged into Linux version 5.14-rc3. There's a 5.14.12 now in stable, so
I took that one.
After Linux boots, /dev/fb0 will be accessible. You can control the
brightness of the display after enabling the framebuffer by running the
following commands:
~ # echo 0 0 > /sys/class/graphics/fb0/pan
~ # echo 255 >/sys/class/backlight/40016c00.dsi.0/brightness
The brightness ranges from 0 to 255, as you can see running the
command:
~ # cat /sys/class/backlight/40016c00.dsi.0/max_brightness
[1] 24b5b1978cd5 ("clk: stm32f4: fix post divisor setup for I2S/SAI PLLs")
Signed-off-by: Dario Binacchi <dariobin@libero.it>
Acked-by: Christophe Priouzeau <christophe.priouzeau@foss.st.com>
[Arnout: add explanation to readme.txt]
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
46 lines
1.2 KiB
Plaintext
46 lines
1.2 KiB
Plaintext
STM32F469 Discovery
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===================
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This tutorial describes how to use the predefined Buildroot
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configuration for the STM32F469 Discovery evaluation platform.
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Building
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--------
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make stm32f469_disco_defconfig
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make
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Flashing
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--------
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./board/stmicroelectronics/stm32f469-disco/flash.sh output/
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It will flash the U-boot bootloader.
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Creating SD card
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----------------
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Buildroot prepares an"sdcard.img" image in the output/images/ directory,
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ready to be dumped on a SD card. Launch the following command as root:
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dd if=output/images/sdcard.img of=/dev/<your-sd-device>
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*** WARNING! This will destroy all the card content. Use with care! ***
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For details about the medium image layout and its content, see the
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definition in board/stmicroelectronics/stm32f469-disco/genimage.cfg.
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Framebuffer
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-----------
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After Linux boots, /dev/fb0 will be accessible. You can control the
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brightness of the display after enabling the framebuffer by running the
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following commands:
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# echo 0 0 > /sys/class/graphics/fb0/pan
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# echo 255 >/sys/class/backlight/40016c00.dsi.0/brightness
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The brightness ranges from 0 to 255, as you can see running the
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command:
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# cat /sys/class/backlight/40016c00.dsi.0/max_brightness
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