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Questions tagged [sdio]

A SDIO (Secure Digital Input Output) card is an extension of the SD specification to cover I/O functions. SDIO cards are only fully functional in host devices designed to support their input-output functions. (From [Wikipedia](https://en.wikipedia.org/wiki/Secure_Digital#SDIO) )

A SDIO (Secure Digital Input Output) card is an extension of the SD specification to cover I/O functions. SDIO cards are only fully functional in host devices designed to support their input-output functions.

(from Wikipedia)

Nowdays it's extensively used to connect WiFi/Bluetooth chips on ARM boards, ...

(from FreeBSD Wiki)

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How can one force a re-scan of an SDIO bus from Linux user space?

On an embedded Linux platform, I have a network adapter attached to an SDIO interface. There is no Card Detect signal on this particular bus. If for instance, I turn the network adapter power on or off, is there any way I can force a re-scan of the…
Peter S. Housel
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Is there any user space SDIO driver in Linux?

sdio_driver in kernel: Just 1 sdio_driver in "linux-2.6-daf54f1\drivers\mmc\card" (sdio_uart) There are some in linux-2.6-daf54f1\drivers\net\wireless. My questions are: Is there any user space SDIO driver in Linux? Is it possible?
fredc
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WIFI over SDIO over USB - Do I have to reflect that in the device tree?

I am currently extending an embedded hardware platform which runs a linux kernel 3.16. I want to connect an external SDIO controller to the USB bus, and then run a WIFI module using that SDIO controller. Since I have only little experience with SDIO…
Hoedur
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Trouble "activating" the SDIO Broadcom BCM43430 Wifi chip on Linux 4.8.0

I have an Intel Z3735F (Bay Trail) platform running a current 64Bit kernel 4.8. on UEFI32. From lines in dmesg and hwinfo I found, that on this particular device the on-board "Broadcom BCM43430 WLAN card" is connected to mmc0, which itself is…
Alex Stragies
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brcmfmac, brcmfmac_module_init No platform data available

I've update my kernel version from 4.11 to 5.4.3-g9c2490ac8-dirty #3 SMP PREEMPT Sun Aug 8 12:11:16 UTC 2021 armv7l GNU/Linux I have an issue with brcmfmac kernel module. I have enabled brcmfmac debug and enables all messages types in debug…
King
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How to debug an SDIO configuration problem?

We are trying to get an SDIO-based 802.11 module to work on an SDIO port of the beaglebone. We adapted the device-tree overlay provided by manufacturer to our hardware, compiled the driver, the driver can even be loaded successfully and I see it…
Philippos
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wifi chipset not detected on rPi 3 with gentoo

i've install gentoo on a raspberry Pi 3. The version of the kernel sources is 4.1.20-v7+. All works fine except for the wifi. When i load the module brcmfmac, it is loaded without complaint but the wifi chips isn't recognize nor detected. For the…
dervishe
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