i.MX6DL: Max IPU Clock

norishinozaki · ‎05-09-2016

Hello Champs,

In LTIB verson of u-boot, ipu1_clk is set 260MHz in default.

However in the Yocto u-boot, it is defined as 198MHz.

#ifdef CONFIG_MX6DL

#define CONFIG_IPUV3_CLK 198000000

#else

#define CONFIG_IPUV3_CLK 264000000

#endif

Is this because ipu_clk was turned out actually limited to 198MHz in MX6DL?

Or just because a result of clock tree changes in Yocto u-boot?

BR,

N.S.

igorpadykov · ‎05-09-2016

Hi Nori

you are right: this seems as result of clock tree changes,

max. frequency is described in Table 18-4. System Clock Frequency Values

i.MX6SDL Reference Manual

Best regards

igor

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