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Fixed

LINCD-1320 : mmc0: Tuning failed, falling back to fixed sampling clock

Created: Mar 9, 2020    Updated: Apr 9, 2020
Resolved Date: Mar 23, 2020
Found In Version: 10.20.12.0
Fix Version: 10.20.15.0
Severity: Standard
Applicable for: Wind River Linux CD
Component/s: BSP

Description

Boot logs:

pca954x 1-0075: registered 8 multiplexed busses for I2C switch pca9548
 cdns-i2c ff030000.i2c: 400 kHz mmio ff030000 irq 26
 cdns-wdt fd4d0000.watchdog: Xilinx Watchdog Timer at (____ptrval____) with timeout 60s
 mmc0: SDHCI controller on ff170000.mmc [ff170000.mmc] using ADMA 64-bit
 printk: console [netcon0] enabled
 netconsole: network logging started
 input: gpio-keys as /devices/platform/gpio-keys/input/input0
 rtc_zynqmp ffa60000.rtc: setting system clock to 2018-11-16T07:46:01 UTC (1542354361)
 of_cfs_init
 of_cfs_init: OK
 pps pps0: new PPS source ptp0
 macb ff0e0000.ethernet: gem-ptp-timer ptp clock registered.
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: new ultra high speed SDR104 SDHC card at address aaaa
 mmcblk0: mmc0:aaaa SB16G 14.8 GiB 
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 blk_update_request: I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
 Buffer I/O error on dev mmcblk0, logical block 0, async page read
 [drm] Cannot find any crtc or sizes
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 mmc0: Tuning failed, falling back to fixed sampling clock
 blk_update_request: I/O error, dev mmcblk0, sector 0 op 0x0:(READ) flags 0x0 phys_seg 1 prio class 0
 Buffer I/O error on dev mmcblk0, logical block 0, async page read
 mmcblk0: unable to read partition table
 macb ff0e0000.ethernet eth0: link up (100/Full)
 IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
 IP-Config: Complete:

Version:
 root@xilinx-zynqmp:~# cat /proc/version 
 Linux version 5.4.23-yocto-standard (oe-user@oe-host) (gcc version 9.2.0 (GCC)) #1 SMP PREEMPT Tue Mar 10 01:19:34 UTC 2020
 root@xilinx-zynqmp:~# cat /proc/cmdline 
 console=ttyPS0,115200n8 root=/dev/nfs rw nfsroot=128.224.165.20:/export/pxeboot/vlm-boards/29049/rootfs,v3,tcp ip=128.224.165.161:128.224.165.20:128.224.165.1:255.255.255.0:zc102:eth0:off ignore_loglevel noinitrd selinux=0 enforcing=0 kmemleak=on earlycon=cdns,mmio,0xFF000000 no_console_suspend
 root@xilinx-zynqmp:~# 
 root@xilinx-zynqmp:~# cat /etc/os-release 
 ID="wrlinux"
 NAME="Wind River Linux development"
 VERSION="10.20.11.0"
 VERSION_ID="10.20.11.0"
 PRETTY_NAME="Wind River Linux development 20.11"
 root@xilinx-zynqmp:~#

Steps to Reproduce

/lpg-build/cdc/fast_prod/WRLINUX_MASTER_WR/MASTER_WR_GIT/wrlinux-10/setup.sh --machines xilinx-zynqmp --templates feature/linux-yocto-dev,feature/toolchain-next,feature/userspace-next --distro wrlinux --dl-layers --accept-eula=yes

bitbake wrlinux-image-std
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