T113-S3 MIPI 帧率低

[kennsu]

使用T113-S3驱动 800x480 MIPI 2lane 的屏，帧率只有22.2fps，请问这是哪里的原因？我想做到60fps。

cat /sys/class/disp/disp/attr/sys
screen 0:
de_rate 300000000 hz, ref_fps:68
mgr0: 480x800 fmt[rgb] cs[0x204] range[full] eotf[0x4] bits[8bits] err[0] force_sync[0] unblank direct_show[false] iommu[1]
dmabuf: cache[0] cache max[0] umap skip[0] umap skip max[4]
        lcd output      backlight( 50)  **fps:22.2**         480x 800
        err:4   skip:14 irq:6777        vsync:0 vsync_skip:0
   BUF    enable ch[1] lyr[0] z[16] prem[N] a[pixel 255] fmt[  0] fb[ 480, 800; 480, 800; 480, 800] crop[   0,   0, 480, 800] frame[   0,   0, 480, 800] addr[       0,       0,       0] flags[0x       0] trd[0,0]
depth[ 0]

[tivon]

@kennsu 我也有一个mipi屏幕，也是2lane,还没有研究到那里，以后遇到了看看能不能解决

[whycanservice2]

@kennsu 设备树 lcd0 配置不正确

[kennsu]

@whycanservice2

&lcd0 {
	lcd_used            = <1>;

	lcd_driver_name     = "st7701s";
	lcd_backlight       = <100>;
    lcd_if              = <4>;

    lcd_x               = <480>;
    lcd_y               = <800>;
    lcd_width           = <52>;
    lcd_height          = <52>;
    lcd_dclk_freq       = <25>;

    lcd_pwm_used        = <1>;
    lcd_pwm_ch          = <0>;
    lcd_pwm_freq        = <1000>;
    lcd_pwm_pol         = <0>;
    lcd_pwm_max_limit   = <255>;

    lcd_hbp             = <10>;
    lcd_ht              = <515>;
    lcd_hspw            = <5>;
    lcd_vbp             = <20>;
    lcd_vt              = <830>;
    lcd_vspw            = <5>;

    lcd_dsi_if          = <0>;
    lcd_dsi_lane        = <2>;
    lcd_lvds_if         = <0>;
    lcd_lvds_colordepth = <0>;
    lcd_lvds_mode       = <0>;
    lcd_frm             = <0>;
    lcd_hv_clk_phase    = <0>;
    lcd_hv_sync_polarity= <0>;
    lcd_gamma_en        = <0>;
    lcd_bright_curve_en = <0>;
    lcd_cmap_en         = <0>;
    lcd_fsync_en        = <0>;
    lcd_fsync_act_time  = <1000>;
    lcd_fsync_dis_time  = <1000>;
    lcd_fsync_pol       = <0>;

    deu_mode            = <0>;
    lcdgamma4iep        = <22>;
    smart_color         = <90>;

    // lcd_gpio_0 =  <&pio PG 13 GPIO_ACTIVE_HIGH>;
    pinctrl-0 = <&dsi4lane_pins_a>;
    pinctrl-1 = <&dsi4lane_pins_b>;
};

&disp {
	disp_init_enable         = <1>;
	disp_mode                = <0>;

	screen0_output_type      = <1>;
	screen0_output_mode      = <4>;

	screen1_output_type      = <3>;
	screen1_output_mode      = <10>;
	
	screen1_output_format    = <0>;
	screen1_output_bits      = <0>;
	screen1_output_eotf      = <4>;
	screen1_output_cs        = <257>;
	screen1_output_range     = <2>;
	screen1_output_scan      = <0>;
	screen1_output_aspect_ratio = <8>;
	dev0_output_type         = <1>;
	dev0_output_mode         = <4>;
	dev0_screen_id           = <0>;
	dev0_do_hpd              = <0>;

	dev1_output_type         = <4>;
	dev1_output_mode         = <10>;
	dev1_screen_id           = <1>;
	dev1_do_hpd              = <1>;

	def_output_dev           = <0>;
	disp_rotation_used       = <1>;
	degree0			 = <0>;
	fb0_format               = <0>;
	fb0_buffer_num           = <2>;		
	fb0_width                = <480>;
	fb0_height               = <800>;
	fb1_format               = <0>;
	fb1_width                = <0>;
	fb1_height               = <0>;
	chn_cfg_mode             = <1>;

	disp_para_zone           = <1>;

	//dc1sw-supply = <&reg_dc1sw>;

	//eldo3-supply = <&reg_eldo3>;

	//dcdc1-supply = <&reg_dcdc1>;
};

是哪里不对呢？麻烦您指点一下

[mysky]

时序参数不对，修改时序参数

[whycanservice2]

@kennsu clk=25 应该是不合适的 pll倍频分频一般偶数频率容易匹配，8的倍数比较好。你这种情况是典型的 无法匹配最接近的频率导致的，在启动时会给出打印 说 选择频率是25000000 但实际频率是xxxxxx。。