如何在linux kernel 4.4開啟支援VGA
想請問我想在firefly上用VGA顯示console,於是先修改了DTS#include "rk3288-firefly.dtsi"
/ {
model = "Firefly-RK3288";
compatible = "firefly,firefly-rk3288", "rockchip,rk3288";
clk16m: clk16m {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <16000000>;
};
panel: panel {
compatible = "rockchip,vga";
status = "okay";
enable-gpios = <&gpio7 21 GPIO_ACTIVE_HIGH>
};
};
然後在extlinux/extlinux.conf修改如下
label kernel-4.4
kernel /uImage
fdt /rk3288-firefly.dtb.img
append earlyprintk console=vga rw root=/dev/ram0 ramdisk_size=16384 initrd=/rd-ext2.bin.lzo.img quiet maxcpus=3 isolcpus=1,2 clk_ignore_unused
但vga都無ouput...想請問是有什麼地方沒有加到?
感謝
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