video clock timings during kernel logo

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video clock timings during kernel logo

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bblock72
Contributor I

I use an LCD with a pixel clock of 33MHz.  I set my source to pll5 in clk-imx6q.c to allow a clock lower than 38MHz.

I also display a logo from the kernel.

However, during the logo display, the pixel clock measure approx. 8MHz.

After the kernel boots, the pixel clock is 33MHz as desired.

How can I correct the initial pixel clock?

I am using an iMX6q, Linux 3.10.

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1,208 次查看
igorpadykov
NXP Employee
NXP Employee

Hi Dave

please look at patches provided on

Patch to support uboot logo keep from uboot to kernel for NXP Linux and Android BSP (HDMI, LCD and L... 

Best regards
igor
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