Questions tagged [mmc]

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How to make multiple SLC region on eMMC User Area?

I have to partition (i.e hardware partition) the UDA (User Data Area) of the eMMC as follows: First 336MB region should be in pSLC. Next 2GB region as MLC partition. The remaining region again should ...
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0answers
113 views

OS confusing eMMC device for SD card device - how to fix using udev

Busybox Linux running on an ARM Cortex A7 processor from NXP. The board has an SD card slot and also an eMMC chip that can be used for storage. The device is booting from nor flash. Strangely, when ...
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71 views

Is there a way to send Power Off to MMC from userspace?

I have an ARM system which boots from an embedded multimedia card version 5.1, runs kernel version 4.14.69, and is shut down by unpluging it directly. I've noticed that there are some patches which ...
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80 views

Finding the manufacturer of the eMMC Host Controller for HP Stream 11 Pro G3 Notebook PC/82A9

I am trying to install Linux on an HP Stream 11 Pro G3 Notebook PC/82A9 and need the name of the manufacturer of the eMMC Host Controller so that I can figure out which drivers to enable in the Linux ...
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87 views

How to check the status of emmc flashing

I am using a BeagleBone running Linux. I have a Yocto-generated custom Linux image which I flash from the SD card to the internal emmc. This flashes fine, however, I am unable to view the status of ...
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1answer
240 views

How to find built-in SD card reader (MMC) details?

I have been attempting to mount a SDXC (exFAT) card into the built-in MMC reader in my laptop. I keep getting "mmc0: error -110 whilst initialising SD card" errors in dmesg and the device is never ...
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403 views

Unable to read SD cards linux

I'm unable to read any SD card from Linux. I already tried both SD cards that I have here in different machines (windows and Linux) and they work flawlessly, I also booted from a live USB (the same ...
1
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1answer
70 views

SD card issue in embedded linux

My setup: Embedded linux version 3.x on an ARM board with a SD card. After running for a couple of months, I am getting this print in the console. I want to understand this issue, and fix it. ...
3
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232 views

USB mmcblk support (realtek or others)

Can a USB card-reader ever appear as /dev/mmcblk0 and support the MMC ioctl commands? I see there are some kernel driver modules such as: rtsx_usb_sdmmc.ko (rtsx-usb-sdmmc) rtsx_usb.ko (rtsx-usb) ...