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Advanced users • Re: Testing class A2 SD cards with Command Queueing on Pi 5

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The Samsung card's CQ support should be silently discarded and basic read/write commands should be used. The filter I implemented is quite broad.

Code:

[    2.545617] mmc0: cannot verify signal voltage switch
That's concerning. Does that appear without sd_cqe in config.txt?

Yes it does,

Code:

dmesg | grep mmc0[    2.506024] mmc0: SDHCI controller on 1000fff000.mmc [1000fff000.mmc] using ADMA 64-bit[    2.545602] mmc0: cannot verify signal voltage switch[    2.623683] mmc0: new ultra high speed SDR104 SDXC card at address 59b4[    2.653777] mmcblk0: mmc0:59b4 ED2S5 119 GiB[    2.689491] mmcblk0: mmc0:59b4 ED2S5 119 GiB (quirks 0x00008000)
My config file if you're curious

Code:

cat /boot/firmware/config.txt # For more options and information see# http://rptl.io/configtxt# Some settings may impact device functionality. See link above for details# Uncomment some or all of these to enable the optional hardware interfaces#dtparam=i2c_arm=on#dtparam=i2s=on#dtparam=spi=on# Enable audio (loads snd_bcm2835)#dtparam=audio=on# Additional overlays and parameters are documented# /boot/firmware/overlays/README# Automatically load overlays for detected cameras#camera_auto_detect=1# Automatically load overlays for detected DSI displaysdisplay_auto_detect=1# Automatically load initramfs files, if foundauto_initramfs=1# Enable DRM VC4 V3D driverdtoverlay=vc4-kms-v3dmax_framebuffers=2# Don't have the firmware create an initial video= setting in cmdline.txt.# Use the kernel's default instead.disable_fw_kms_setup=1# Run in 64-bit modearm_64bit=1# Disable compensation for displays with overscandisable_overscan=1# Run as fast as firmware / board allowsarm_boost=1[cm4]# Enable host mode on the 2711 built-in XHCI USB controller.# This line should be removed if the legacy DWC2 controlleris required# (e.g. for USB device mode) or if USB support is not required.otg_mode=1[all]#dtparam=sd_cqedisable_splash=1camera_auto_detect=0dtparam=audio=offframebuffer_width=1600framebuffer_height=900dtoverlay=disable-wifidtoverlay=disable-bt
The Pi uses PoE, and is used for homer, pihole, wireguard, and hosting a unifi controller. Did some SMB with it at first, but moved that role to another machine.

Statistics: Posted by The Olden Goat — Tue Jul 16, 2024 7:06 am



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