[meta-intel] [EXT] RE: Apollo lake GR ABL change mmc host configuration

[Francesco Camarda (fcamarda)]

Hi Juinee,
Thank you for your reply but I already saw that configuration section for eMMC (BTW do you have a .csv example).

I was interested on how to change the register of host From document number 557556:

hostctrl1_datawidth

from:
22.5.15HostControl1 Register (hostcontrol1)-Offset 28h
Bit range 1

Or the host pull up/down strength

hostctrl2_driverstrength

From:
22.9.29Host Control2 Register (hostcontrol2)-Offset 3Eh
Bit range 5:4

Regards,
Francesco

From: Tan, Jui Nee [mailto:jui.nee.tan at intel.com]
Sent: Wednesday, August 02, 2017 10:44 AM
To: Francesco Camarda (fcamarda) <fcamarda at micron.com>; meta-intel at yoctoproject.org
Subject: [EXT] RE: Apollo lake GR ABL change mmc host configuration

You may need to refer to the ABL Configuration Guide: http://www.intel.com/cd/edesign/library/asmo-na/eng/572371.htm
Under section 4.15, it lists down ABL config data that can be used to tune eMMC interface.

Thanks,
Juinee

From: meta-intel-bounces at yoctoproject.org<mailto:meta-intel-bounces at yoctoproject.org> [mailto:meta-intel-bounces at yoctoproject.org] On Behalf Of Francesco Camarda (fcamarda)
Sent: Tuesday, July 25, 2017 12:20 AM
To: meta-intel at yoctoproject.org<mailto:meta-intel at yoctoproject.org>
Subject: [meta-intel] Apollo lake GR ABL change mmc host configuration

Hello,
which is the right way to change the mmc host driver strength in a ifwi (Integrated FW Image) yocto build of the Automotive boot loader (ABL) and not the bios to boot the Gordon (peak) Ridge (soc) MRB


Regards,
Francesco

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