Hi Andrey,
I have found my fex file for an 18.4" Panel. I have a hard time to figure
out how to enable the dual channel in the dts, can you have a look at it
and help how to enable it?
Here are the timings:
[lcd0_para]
lcd_used = 1
lcd_x = 1920
lcd_y = 1080
lcd_dclk_freq = 69
lcd_pwm_not_used = 0
lcd_pwm_ch = 0
lcd_pwm_freq = 10000
lcd_pwm_pol = 0
lcd_if = 3
lcd_hbp = 160
lcd_ht = 2084
lcd_vbp = 31
lcd_vt = 2226
lcd_hv_if = 0
lcd_hv_smode = 0
lcd_hv_s888_if = 0
lcd_hv_syuv_if = 0
lcd_hv_vspw = 0
lcd_hv_hspw = 0
lcd_lvds_ch = 1
lcd_lvds_mode = 0
lcd_lvds_bitwidth = 1
lcd_lvds_io_cross = 0
lcd_cpu_if = 0
lcd_frm = 1
lcd_io_cfg0 = 268435456
lcd_gamma_correction_en = 0
lcd_gamma_tbl_0 = 0x0
lcd_gamma_tbl_1 = 0x10101
lcd_gamma_tbl_255 = 0xffffff
lcd_bl_en_used = 1
lcd_bl_en = port:PH07<1><0><default><1>
lcd_power_used = 1
lcd_power = port:PH08<1><0><default><1>
lcd_pwm_used = 1
lcd_pwm = port:PB02<2><0><default><default>
lcd_gpio_0 =
lcd_gpio_1 =
lcd_gpio_2 =
lcd_gpio_3 =
lcdd0 = port:PD00<2><0><default><default>
lcdd1 = port:PD01<2><0><default><default>
lcdd2 = port:PD02<2><0><default><default>
lcdd3 = port:PD03<2><0><default><default>
lcdd4 = port:PD04<2><0><default><default>
lcdd5 = port:PD05<2><0><default><default>
lcdd6 = port:PD06<2><0><default><default>
lcdd7 = port:PD07<2><0><default><default>
lcdd8 = port:PD08<2><0><default><default>
lcdd9 = port:PD09<2><0><default><default>
lcdd10 = port:PD10<2><0><default><default>
lcdd11 = port:PD11<2><0><default><default>
lcdd12 = port:PD12<2><0><default><default>
lcdd13 = port:PD13<2><0><default><default>
lcdd14 = port:PD14<2><0><default><default>
lcdd15 = port:PD15<2><0><default><default>
lcdd16 = port:PD16<2><0><default><default>
lcdd17 = port:PD17<2><0><default><default>
lcdd18 = port:PD18<2><0><default><default>
lcdd19 = port:PD19<2><0><default><default>
lcdd20 = port:PD20<2><0><default><default>
lcdd21 = port:PD21<2><0><default><default>
lcdd22 = port:PD22<2><0><default><default>
lcdd23 = port:PD23<2><0><default><default>
lcdclk = port:PD24<2><0><default><default>
lcdde = port:PD25<2><0><default><default>
lcdhsync = port:PD26<2><0><default><default>
lcdvsync = port:PD27<2><0><default><default>
how would be the dts equivalent? And how about PD28,PD23,PD24,PD25,PD26 and
PD27 pins?
panel { compatible = "panel-lvds"; width-mm = <>;
height-mm = <>; pinctrl-names = "default"; pinctrl-0 =
<&lcd_enable_pin &lcd_lvds0_pins>;
pinctrl-1 = <&lcd_enable_pin &lcd_lvds1_pins>;
enable-gpios = <&pio 7 7 GPIO_ACTIVE_HIGH>; /* PH7 */ data-mapping =
"jeida-18"; #address-cells = <1>; #size-cells = <0>; panel-timing {
clock-frequency
= <69000000>; hactive = <1920>; vactive = <1080>; hsync-len = <1>; hfront-porch
= <>; hback-porch = <>; vsync-len = <1>; vfront-porch = <>; vback-porch =
<>; }; port { lvds_panel_in: endpoint { remote-endpoint =
<&display_out_rgb>; }; }; };
BR
@lex
On Monday, February 17, 2020 at 11:26:51 AM UTC-3, @lex wrote:
>
> Hi Andrey,
>
> Thank you for sharing your work.
> I can remember 2 channel was needed for the 1920x1080 res. in fact the
> panel is 17"
>
> I need to find the fex files, must be somewhere here... :)
> I will try with your kernel and see what i get. Busy weekend ahead...
>
> I will post the results.
>
> BR
> @lex
>
>
>
>
> On Sunday, February 16, 2020 at 10:25:33 AM UTC-3, Andrey Lebedev wrote:
>>
>> On Saturday, February 15, 2020 at 4:20:33 PM UTC+2, @lex wrote:
>>>
>>> Hi Andrey,
>>>
>>> I have a couple of 15" LCDs (different makers) with Cubieboard A20
>>> (kernel 3.4) i would like to test your implementation if possible.
>>> Can you share a kernel tree with your code and where should i change the
>>> timings for each Panel?
>>>
>>
>> Hi @lex,
>>
>> I've shared my device tree here:
>> https://gitlab.freedesktop.org/lima/mesa/issues/131#note_405869
>> <https://www.google.com/url?q=https%3A%2F%2Fgitlab.freedesktop.org%2Flima%2Fmesa%2Fissues%2F131%23note_405869&sa=D&sntz=1&usg=AFQjCNGLsHoqWxFOjgRhKWl6gbc1IQzxGQ>.
>>
>> I believe you have to adapt timings either from panel datasheet or (if you
>> have .fex file with the timings) according to formulas here:
>> https://linux-sunxi.org/LCD.
>>
>> The patches for LVDS support are under review right now, I keep the most
>> up-to-date version here:
>> https://github.com/kedder/linux/tree/a20-lvds-support
>>
>> If you have big screen like that, you might need to include another pin
>> set for LVDS channel 1. They are already included in my changes on
>> a20-lvds-support branch, see
>> https://github.com/kedder/linux/commit/44eb271c79869394247b560667eb59dce2ddc1c9
>> .
>>
>>
>>
--
You received this message because you are subscribed to the Google Groups
"linux-sunxi" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to linux-sunxi+unsubscr...@googlegroups.com.
To view this discussion on the web, visit
https://groups.google.com/d/msgid/linux-sunxi/bfac180a-2457-4f7f-b51b-3280a9eb81d1%40googlegroups.com.
