14.100ASK_T113-PRO LCD7寸实验

目录

1.设备树

2.测试LCD

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1.设备树

位置:

~/buildroot-100ask_t113-pro/buildroot/output/build/linux-origin_master/arch/arm/boot/dts$ gedit sun8iw20p1-t113-100ask-t113-pro.dts
这个不需要修改

&lcd0 {
		/* part 1 */
        lcd_used            = <1>;
        lcd_driver_name     = "default_lcd";
	lcd_backlight	    = <100>;

	/* part 2 */
	lcd_if = <0>;
	lcd_hv_if = <0>;
	
	/* part 3 */
        lcd_x               = <1024>;
        lcd_y               = <600>;
        lcd_width           = <154>;
        lcd_height          = <85>;
        lcd_dclk_freq       = <51>;
        lcd_hbp             = <140>;
        lcd_ht              = <1344>;
        lcd_hspw            = <20>;
        lcd_vbp             = <20>;
        lcd_vt              = <635>;
        lcd_vspw            = <3>;
		
	lcd_pwm_used        = <1>;
	lcd_pwm_ch          = <7>;
	lcd_pwm_freq        = <500>;
	lcd_pwm_pol         = <1>;

	/* part 5 */
	lcd_frm = <1>;
	lcd_io_phase = <0x0000>;
	lcd_gamma_en = <0>;
	lcd_cmap_en = <0>;
	lcd_hv_clk_phase = <0>;
	lcd_hv_sync_polarity= <0>;
				
	/* part 6 */
	lcd_power = "vcc-lcd";
	lcd_pin_power = "vcc-pd";
	pinctrl-0 = <&rgb18_pins_a>;
	pinctrl-1 = <&rgb18_pins_b>;
};

2.测试LCD

花屏测试：

cat /dev/urandom > /dev/fb0
 

colorbar测试：

cat /dev/zero > /dev/fb0
echo 8 > /sys/class/disp/disp/attr/colorbar