Thread (9 messages) 9 messages, 2 authors, 2019-01-25

Re: [PATCH v5 07/17] drm/sun4i: sun6i_mipi_dsi: Refactor vertical video start delay

From: Jagan Teki <jagan@amarulasolutions.com>
Date: 2019-01-17 04:32:26
Also in: dri-devel, linux-clk, lkml

On Thu, Jan 17, 2019 at 12:48 AM Maxime Ripard
[off-list ref] wrote:
On Sun, Jan 13, 2019 at 01:07:41AM +0530, Jagan Teki wrote:
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Again, I cannot help you without the datasheet for the panels you're
trying to submit.
The panel bound with Sitronix ST7701 IC
http://www.startek-lcd.com/res/starteklcd/pdres/201705/20170512144242904.pdf
It's the controller, not the panel
As I said before, the datasheet of that panel doesn't have any
information except electrical characteristics and used IC which is
ST7701.

I have one more panel, which is from Bananapi, S070WV20-CT16 ICN621
please find the attachment for the same.

Here is some more details of the same.

https://github.com/yesnoandor/x300/blob/master/kernel/arch/arm/boot/dts/erobbing/x300/x300.dtsi#L81
https://github.com/wxzed/Raspberry_5MIPI_Display/blob/master/I2C_Slave/USER/main.c#L15

https://github.com/eliot-shao/qcom/blob/master/icn6211_cxn0102/kernel/drivers/video/msm/mdss/mdss_i2c_interface.c#L152
matches timings for
https://github.com/eliot-shao/qcom/blob/master/icn6211_cxn0102/kernel/arch/arm/boot/dts/qcom/dsi-mipi-2-rgb_1280p_video.dtsi#L20

https://github.com/zestroly/micromat/blob/master/test/raspberry/ICN6211.cpp#L169
Where did you get the timings from then?
You mean drm_mode timings, the same panel with RGB available in
panel-simple[1], and dsi driver in Mailing list[2] and actual DSI
sequence commands from BSP[3]

[1] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git/commit/drivers/gpu/drm/panel/panel-simple.c?id=7ad8b41cd8f5c2842646d01cdd576663caee04a7
[2] https://patchwork.kernel.org/patch/10680331/
[3] https://github.com/BPI-SINOVOIP/BPI-M64-bsp/blob/master/linux-sunxi/drivers/video/sunxi/disp2/disp/lcd/S070WV20_MIPI_RGB.c
So you had no reliable source for the timings then? How do you know if
all your patches that are timing related are right then?
I don't understand your point, or may be I confused with many links
that I attached in previous mail.

1. Patch for same panel timings are already in Mainline that was
tested on one of the board. [1]
2. Driver from AW, released bsp from BPI-M64-bsp [3]

Do you think the above two points are not valid sources?

Jagan.

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