topic ddr clock configuration through synchronous mode from external oscillator not from CPU in u-boot in P-Series https://community.nxp.com/t5/P-Series/ddr-clock-configuration-through-synchronous-mode-from-external/m-p/392970#M2166 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>We are having a P1021 based custom board, in which the clock input to DDR is through ddr synchronous mode from external oscillator not from CPU, i want to support this in U-boot.</P><P>I am not getting a clue where to make this change in u-boot so that it supports DDR clocking from external oscillator. Can some body please point me out on this.</P><P></P><P>Regards,</P><P>Shubha</P></BODY></HTML> Wed, 29 Jul 2015 04:39:59 GMT shubhasingh 2015-07-29T04:39:59Z ddr clock configuration through synchronous mode from external oscillator not from CPU in u-boot https://community.nxp.com/t5/P-Series/ddr-clock-configuration-through-synchronous-mode-from-external/m-p/392970#M2166 <HTML><HEAD></HEAD><BODY><P>Hi,</P><P></P><P>We are having a P1021 based custom board, in which the clock input to DDR is through ddr synchronous mode from external oscillator not from CPU, i want to support this in U-boot.</P><P>I am not getting a clue where to make this change in u-boot so that it supports DDR clocking from external oscillator. Can some body please point me out on this.</P><P></P><P>Regards,</P><P>Shubha</P></BODY></HTML> Wed, 29 Jul 2015 04:39:59 GMT https://community.nxp.com/t5/P-Series/ddr-clock-configuration-through-synchronous-mode-from-external/m-p/392970#M2166 shubhasingh 2015-07-29T04:39:59Z Re: ddr clock configuration through synchronous mode from external oscillator not from CPU in u-boot https://community.nxp.com/t5/P-Series/ddr-clock-configuration-through-synchronous-mode-from-external/m-p/392971#M2167 <HTML><HEAD></HEAD><BODY><P>Clocking mode of the DDR is set on the board level, u-boot does not require any special change. Specifically the user should set proper 'cfg_ddr_pll[0:2]' POR configuration field in accordance with the input clock source (frequency), see section 4.5.3.2 of the Ref Manual for details.</P><P></P><P>Regards,</P><P>Bulat</P></BODY></HTML> Thu, 30 Jul 2015 14:34:43 GMT https://community.nxp.com/t5/P-Series/ddr-clock-configuration-through-synchronous-mode-from-external/m-p/392971#M2167 Bulat 2015-07-30T14:34:43Z Re: ddr clock configuration through synchronous mode from external oscillator not from CPU in u-boot https://community.nxp.com/t5/P-Series/ddr-clock-configuration-through-synchronous-mode-from-external/m-p/392972#M2168 <HTML><HEAD></HEAD><BODY><P>Thanks.</P></BODY></HTML> Wed, 05 Aug 2015 10:04:38 GMT https://community.nxp.com/t5/P-Series/ddr-clock-configuration-through-synchronous-mode-from-external/m-p/392972#M2168 shubhasingh 2015-08-05T10:04:38Z