06-20-2018, 04:47 PM
(This post was last modified: 06-21-2018, 01:14 AM by pfeerick.
Edit Reason: reply was lost in quote
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(06-15-2018, 08:26 AM)ramprasad Wrote: Hi pfeerick,
We have contacted the Longsys (FORSEE eMMC support company) regarding this issue and provided the FORSEE eMMC model (NCEMAD6B-16G - from Pine64 website). The LONGSYS responded that this model was End of Life and it may be signal compatibility issue and was asked to change the MODE to SDR50. Can you please somebody provide some pointers how to change the mode. I observed the mmc command in uboot to set several parameters, but not the MODE. Also checked the documentation (/Documentation/devicetree/bindings/mmc/mmc.txt) provided a parameter (sd-uhs-sdr50) in .dtsi file. But I am not sure about correct procedure. Can somebody provide some info about how to change and achieve this.
And one more information is that LONGSYS recommended another model of eMMC recommended (NCEMAD9D-16G) and I am not sure about that we need to change the MODE for this model too. I requested the same info with LONGSYS, I will share more details once I received the response.
Thanks,
Ramprasad
Any pointers to change eMMC bus speed mode?