SD卡启动 sdhci_send_command: MMC: 0 busy timeout

[yyt]

大家好，我在用petalinux2018.2做sd卡启动程序的时候，发现出现如下问题：

环境：petalinux2018.2 vivado2018.2 zu3

U-Boot 2018.01 (Apr 25 2019 - 01:05:10 +0800) Xilinx ZynqMP ZCU102 rev1.0

I2C:   ready
DRAM:  2 GiB
EL Level:	EL2
Chip ID:	zu3eg
MMC:   sdhci@ff170000: 0
sdhci_send_command: MMC: 0 busy timeout increasing to: 200 ms.
sdhci_send_command: MMC: 0 busy timeout increasing to: 400 ms.
sdhci_send_command: MMC: 0 busy timeout increasing to: 800 ms.
sdhci_send_command: MMC: 0 busy timeout increasing to: 1600 ms.
sdhci_send_command: MMC: 0 busy timeout increasing to: 3200 ms.
sdhci_send_command: MMC: 0 busy timeout.
sdhci_send_command: MMC: 0 busy timeout.
mmc_init: -70, time 7439
** Bad device mmc 0 **
Using default environment

In:    serial@ff010000
Out:   serial@ff010000
Err:   serial@ff010000
Model: ZynqMP template
Board: Xilinx ZynqMP
Bootmode: SD_MODE1
Net:   ZYNQ GEM: ff0e0000, phyaddr ffffffff, interface rgmii-id
eth0: ethernet@ff0e0000

ethernet@ff0e0000 Waiting for PHY auto negotiation to complete......................................... TIMEOUT !
Hit any key to stop autoboot:  0 
sdhci_set_clock: Timeout to wait cmd & data inhibit
sdhci_set_clock: Timeout to wait cmd & data inhibit
sdhci_send_command: MMC: 0 busy timeout.
mmc_init: -70, time 3254
** Bad device mmc 0 **
sdhci_set_clock: Timeout to wait cmd & data inhibit
sdhci_set_clock: Timeout to wait cmd & data inhibit
sdhci_send_command: MMC: 0 busy timeout.
mmc_init: -70, time 3254
ZynqMP> 

之前在使用没有问题，sd卡能够启动，并且进入rootfs。最新做的程序（boot.bin image.ub）出现上述问题，但更换为之前的boot.bin image.ub 就可以正常启动。

[yzhang]

你前面的boot.bin和image.ub也是petalinux 2018.2生成的么？基于同一个hdf文件？你最好先做一下交叉实验，判断一下是fsbl初始化sd controller有问题还是u-boot有问题。比如在sdk里面生成xilffs library example的application，然后和fsbl生成boot.bin就可以在standalone环境下测试sd，这个测试会format sd卡然后在sd卡里创建一个文件，所以请保存好sd卡里原有的文件。

下面这个article是MPSoC器件的SD checklist，看一下吧。

https://www.xilinx.com/support/answers/69006.html

[yyt]

@yzhang 

都是petalinux2018.2生成，但不是同一个hdf，区别只是pl端IP不同，ps配置完全一样。

换了一张sd卡起来了。