emmc card can't be removed. Did you mean SD card has to be removed?

Sysboot will ensure that BOOT-ROM will setup the peripheral/pinmux rightly to boot from that medium. But after the OS starts it might have its own set of pinmux which needs to be set rightly to access that medium.

cheers,
-roger

On 26/06/15 17:10, mohit hada wrote:
Hi,

By changing the SYSBOOT configuration on the hardware of BBB, Booting
will start from GPMC is what I know but will the physical connections of
eMMC cause any trouble still at electrical level? Or NOT ..... once the
SYSBOOT is reconfigured, things should work perfectly if the custom
board is fine is it what you mean?

The reason I repeat is TI people, BISER from sitaraware informed me that
eMMC card should be removed anyhow.

I will be more than happy if it works...

On Fri, Jun 26, 2015 at 7:34 PM, Gerald Coley <ger...@beagleboard.org
<mailto:ger...@beagleboard.org>> wrote:

    Device Tree. It is what sets up the pin mux function of all the
    pins. You will need to reconfigure the pins to support the module
    instead of the onboard eMMC.

    Gerald
    ]

    On Fri, Jun 26, 2015 at 9:01 AM, mohit hada <mohit....@gmail.com
    <mailto:mohit....@gmail.com>> wrote:

        What is DT File? Please do not mind my ignorance.

        Regards.

        On Fri, Jun 26, 2015 at 7:27 PM, Gerald Coley
        <ger...@beagleboard.org <mailto:ger...@beagleboard.org>> wrote:

            It will work with either one. The BBB needs to have the DT
            file set to disable the eMMC.

            Gerald


            On Fri, Jun 26, 2015 at 8:30 AM, mohit hada
            <mohit....@gmail.com <mailto:mohit....@gmail.com>> wrote:

                Hi Gerald,

                Thanks for the reply. But can it be used with BBB or
                only with BB White?

                I have BBB and not BB White but I want to add something
                of this sort on it.

                Regards.

                On Fri, Jun 26, 2015 at 6:46 PM, Gerald Coley
                <ger...@beagleboard.org <mailto:ger...@beagleboard.org>>
                wrote:

                    Yes. There is a cape for adding memory and a NOR
                    module. http://elinux.org/Beagleboard:BeagleBone_Capes


                    Gerald

                    On Fri, Jun 26, 2015 at 3:33 AM, mohit hada
                    <mohit....@gmail.com <mailto:mohit....@gmail.com>>
                    wrote:

                        Read all the post as BBB instead of Beagle Bone
                        Please. Thanks for patience.


                        On Friday, 26 June 2015 13:24:36 UTC+5:30, mohit
                        hada wrote:

                            Hi,


                            Can I do GPMC XIP parallel NOR boot using
                            Beagle Bone by using the expansion headers
                            of the beagle bone and making my own custom
                            board for NOR / OTP Flash and check it.


                            What can be the probable issues which I can
                            face in doing this as most of the header
                            signals are shared on BBB? When I discussed
                            this on TI community, I received a reply
                            that eMMC chip in that case needs to be
                            removed. Is it essential to Remove eMMC.
                            Can't it be erased and then hardware lines
                            used in parallel? Can other shared lines
                            used on the expander head for GPMC  also
                            create problem.


                            I want to use MUX1 or MUX2 XIP Boot Mode, 16
                            bit Address Data Multiplexed, with an OTP /
                            Parallel NOR Flash booting.


                            Kindly help as this will help me to reduce m
                            design time and cost to a minimum.


                            Regards.

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