Layerscape中的主题 Re: Booting from SDHC memory card failed

Booting from SDHC memory card failed

sevi — Mon, 20 May 2019 12:46:50 GMT

I'm using the LS1028ARDB board for evaluation and failed to boot Linux with kernel 4.14.47 built with default settings and flexbuild_ls1028a_bsp0.3.

The SD-card I'm using were included and shipped with the evaluation board.

Booting went good until SDHC tuning is executed, this tuning fails. From this point on the kernel log is full of different errors pointing to read problems from SD-card.

The question is why the tuning fails and is there also a problem with default fallback clock like read in kernel messages?

I also tried a different card not SDHC which is working without problems.

Here is a kernel log snippet from the point of first error:

[ 4.372852] mmc0: Tuning failed, falling back to fixed sampling clock [ 4.381853] mmcblk0: error -84 transferring data, sector 2277376, nr 8, cmd response 0x900, card status 0xc00 [ 4.400299] mmc0: Tuning failed, falling back to fixed sampling clock [ 4.503983] mmcblk0: error -84 transferring data, sector 2277377, nr 7, cmd response 0x900, card status 0xc00 [ 4.522273] mmc0: Tuning failed, falling back to fixed sampling clock [ 4.529051] print_req_error: I/O error, dev mmcblk0, sector 2277378 [ 4.535346] Buffer I/O error on dev mmcblk0p3, logical block 0, lost sync page write [ 4.543626] EXT4-fs (mmcblk0p3): mounted filesystem with ordered data mode. Opts: (null) [ 4.551776] VFS: Mounted root (ext4 filesystem) on device 179:3. [ 4.560984] devtmpfs: mounted

...

Re: Booting from SDHC memory card failed

ufedor — Tue, 21 May 2019 04:19:23 GMT

Please refer to the Getting Started with LS1028ARDB:

Getting Started with LS1028ARDB | NXP

and report the results of the firmware upgrade.

Re: Booting from SDHC memory card failed

sevi — Tue, 21 May 2019 05:16:57 GMT

Thank you for the quick replay.

I've tried the Getting Started procedure without any problems.

But if i go on building the boot system for the SD card with the LSDK flex-builder and flex-installer like it's described in LS1028ABSPUG.pdf, the booting process fails with the error described above.

Re: Booting from SDHC memory card failed

ufedor — Tue, 11 Jun 2019 14:15:16 GMT

Please apply the following patch:

--- a/ls1028ardb/R_SQPP_85bb/rcw_1300_sd.rcw

+++ b/ls1028ardb/R_SQPP_85bb/rcw_1300_sd.rcw

@@ -16,7 +16,7 @@ MEM_PLL_RAT=16

CGA_PLL1_RAT=13

CGA_PLL2_RAT=12

HWA_CGA_M1_CLK_SEL=7

-HWA_CGA_M2_CLK_SEL=7

+HWA_CGA_M2_CLK_SEL=1

HWA_CGA_M3_CLK_SEL=2

HWA_CGA_M4_CLK_SEL=3

Re: Booting from SDHC memory card failed

wangxiaozhuang — Fri, 28 Jun 2019 07:09:57 GMT

Thank you, I have the same question. It's worked!