topic modify Clock in Devicetree in i.MX Processors https://community.nxp.com/t5/i-MX-Processors/modify-Clock-in-Devicetree/m-p/457637#M71574 <HTML><HEAD></HEAD><BODY><P>Hi</P><P></P><P>I am using the 3.10.53 kernel</P><P>the ipg_clock for fec driver i am getting is 66Mhz ,i want to modify </P><P>it to 50 Mhz</P><P>What change need to be done for that in devicetree ?</P><P></P><P>Regards</P><P>Himanshu</P></BODY></HTML> Wed, 02 Dec 2015 06:40:51 GMT himanshugusain 2015-12-02T06:40:51Z modify Clock in Devicetree https://community.nxp.com/t5/i-MX-Processors/modify-Clock-in-Devicetree/m-p/457637#M71574 <HTML><HEAD></HEAD><BODY><P>Hi</P><P></P><P>I am using the 3.10.53 kernel</P><P>the ipg_clock for fec driver i am getting is 66Mhz ,i want to modify </P><P>it to 50 Mhz</P><P>What change need to be done for that in devicetree ?</P><P></P><P>Regards</P><P>Himanshu</P></BODY></HTML> Wed, 02 Dec 2015 06:40:51 GMT https://community.nxp.com/t5/i-MX-Processors/modify-Clock-in-Devicetree/m-p/457637#M71574 himanshugusain 2015-12-02T06:40:51Z Re: modify Clock in Devicetree https://community.nxp.com/t5/i-MX-Processors/modify-Clock-in-Devicetree/m-p/457638#M71575 <HTML><HEAD></HEAD><BODY><P>Hi Himanshu</P><P></P><P>ipg_clock is produced from AHB_CLK_ROOT as shown on</P><P>Figure 18-5. BUS clock generation <A href="http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQRM.pdf" title="http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQRM.pdf">http://cache.freescale.com/files/32bit/doc/ref_manual/IMX6DQRM.pdf</A> </P><P>so changes in devicetree are not sufficient. It is necessary to reprogram pll2/3, producing</P><P>this clock.</P><P></P><P>Best regards</P><P>igor</P><P>-----------------------------------------------------------------------------------------------------------------------</P><P>Note: If this post answers your question, please click the Correct Answer button. Thank you!</P><P>-----------------------------------------------------------------------------------------------------------------------</P></BODY></HTML> Wed, 02 Dec 2015 11:35:48 GMT https://community.nxp.com/t5/i-MX-Processors/modify-Clock-in-Devicetree/m-p/457638#M71575 igorpadykov 2015-12-02T11:35:48Z