i.MX ProcessorsのトピックRe: How to change dotclk phase

How to change dotclk phase

davidfincher — Tue, 31 Jul 2018 12:26:20 GMT

My board is i.Mx6DL, use lcd 800x480，RGB data begins with the falling edge of dotclk，how can I change the pixclk phase? thanks

Bio_TICFSL — Wed, 01 Aug 2018 15:02:34 GMT

Hi David,

I believe, the parent clock is not mapped. You need to set the parent for LDB_DI0_SEL.

In IPU clock selection section, add the below changes in "~/linux-imx/arch/arm/mach-imx/clk-imx6q.c" file.

	/* ipu clock initialization */
	imx_clk_set_parent(clk[IMX6QDL_CLK_LDB_DI0_SEL], clk[IMX6QDL_CLK_PLL5_VIDEO_DIV]);

One can look at hsync-active,vsync-active in &lcdif {

then add timings for syncs using as example lvds:

Regards

davidfincher — Mon, 06 Aug 2018 05:11:48 GMT

Thank U.I changed it with videomode in mxc_lcdif.c