i.MX6 PLL spread spectrum support(i.MX6系列展频支持文档)

[#1]

Description
      This doc explain how to enable the plugin boot on i.MX6Q/6DL and which used for
change the pll2 clock and add the spread spectrum support to pass the EMI test. we
still list the source codes of 3.0.35 and 4.1.15. to explain the dts/non-dts kernel
support.
      本文旨在说明如何在i.MX6Q/6DL上实现plugin启动，以支持展频和改变pll2的频率，其目的是为了通过
EMI测试。也附上了基于3.0.35和4.1.15的源代码，以供参考

Products

Product Category	NXP Part Number	URL
MPU	i.MX6 Family	https://www.nxp.com/products/processors-and-microcontrollers/arm-processors/i-mx-applications-proces...

Tools

NXP Development Board	URL
i.MX6 SabreSDP	https://www.nxp.com/design/development-boards:EVDEBRDSSYS#/collection=softwaretools&start=0&max=25&q...

Version:

MX6Q_PLUGIN_FC_SSC_V7-20200915_chn..pdf（chinese version）add baidou support

MX6Q_PLUGIN_FC_SSC_V7-20170504_eng-chapter-imx6dl.doc+MX6Q_PLUGIN_FC_SSC_V3-20170309_eng.doc（english version）

[mentorm]

hi John 我是使用imx6u的芯片 uboot中配置的是imx6dl

现在使用plugin 做展频后 

可以使用sd卡启动

但是烧到emmc上启动就启不来。

可以帮忙分析一下嘛

谢谢