topic Re: How to setup initialize code via spi interface for lvds panel, which connect to imx6 solo? in i.MX Processors

How to setup initialize code via spi interface for lvds panel, which connect to imx6 solo?

pingwu — Mon, 14 Mar 2016 11:36:12 GMT

Hi list,

In my case, LVDS panel connect to imx6 solo mcu, but the lvds panel need setup some initialize code via spi interface before work. I searched linux-3.0.35/driver/video/mxc/mxcfb_epson_vga.c (linux-2.6-imx.git - Freescale i.MX Linux Tree ) has some code as below:

static int __init epson_lcd_init(void) { int ret; ret = platform_driver_register(&lcd_plat_driver); if (ret) return ret; return spi_register_driver(&lcd_spi_dev_driver); }

But above code could not found on imx_3.14.28_1.0.0_ga branch, I guess this is as of device tree introduced.

My question is:

How to setup initialize code via spi interface to lvds panel on imx_3.14.28_1.0.0_ga or later branch? Any similar example code or suggestion? Thanks

Re: How to setup initialize code via spi interface for lvds panel, which connect to imx6 solo?

art — Tue, 15 Mar 2016 12:22:07 GMT

Since the initial configuration of the LVDS panel is relatively independent process, you can create a separate module (or even a simple shell script) that preforms the LVDS panel initial configuration at system startup. For that, you can use the low-level eCSPI driver that is already included in the system. For more information, refer to the Chapter 38 of the attached document.

Have a great day,
Artur

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