Hi,
My current system configuration is like application gives the frame to XORG and
XORG is configured to use simple frame buffer driver(mapped to DDR address).
I need to implement a ping pong buffer utility in such a way that every new
frame goes to two different DDR addresses.
I can reserve two block of memory in simple frame buffer driver adding below
mentioned code in system-user.dtsi:
chosen {
framebuffer0: framebuffer@3ee48000 {
compatible = "simple-framebuffer";
memory-region = <&frontbuff_reserved> <&backbuff_reserved>;
width = <1280>;
height = <800>;
stride = <5120>;
format = "a8r8g8b8";
status = "okay";
};
};
reserved-memory {
#address-cells = <2>;
#size-cells = <2>;
ranges;
frontbuff_reserved: framebuffer@3ee48000 {
no-map;
reg = <0x0 0x3ee48000 0x0 0x400000>;
};
backbuff_reserved: framebuffer@3f248000 {
no-map;
reg = <0x0 0x3f248000 0x0 0x400000>;
};
};
But I need some support in how XORG can use these two memory alternatively on
every frame/image at runtime.
I have attached the xorg log file and conf file for reference.
Regards,
Prija
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Xorg.log
Description: Xorg.log
xorg.conf
Description: xorg.conf
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