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author | Fabio Estevam <fabio.estevam@nxp.com> | 2017-11-03 18:40:10 +0300 |
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committer | Stefano Babic <sbabic@denx.de> | 2017-11-07 12:13:11 +0300 |
commit | b2e6ad451b193e848c2736299ec59389449f3d12 (patch) | |
tree | f5ad4aca22c7f0818f247a760a7e47ade15ab940 /board/engicam/icorem6_rqs/Makefile | |
parent | 5d09c27138bdbb459c2619c4788fe495b405622b (diff) | |
download | u-boot-b2e6ad451b193e848c2736299ec59389449f3d12.tar.xz |
mx51: Select the ESDHC_A001 erratum
When a high speed card is connected to mx51evk the following error is seen:
U-Boot 2017.11-rc2 (Oct 18 2017 - 13:49:26 -0200)
CPU: Freescale i.MX51 rev3.0 at 800 MHz
Reset cause: POR
Board: MX51EVK
DRAM: 512 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
*** Warning - read failed, using default environment
In: serial
Out: serial
Err: serial
Net: FEC
Hit any key to stop autoboot: 0
=> saveenv
Saving Environment to MMC...
Writing to MMC(0)... failed
The root cause for the failure is the eSDHC-A001 erratum:
"eSDHC-A001 : Data timeout counter (SYSCTL[DTOCV]) is not reliable for
values of 0x4,0x8, and 0xC" that is listed
on some PowerArchitecture chips:
https://www.nxp.com/files-static/32bit/doc/errata/MPC8379ECE.pdf
Even though eSDHC-A001 is not documented on the i.MX51 errata document,
I have confirmed with the NXP design team that this erratum does affect
i.MX51, so fix the problem by selecting SYS_FSL_ERRATUM_ESDHC_A001
at SoC level.
The i.MX51 ts4800 board already selects this option, but it is better
to move this selection to the i.MX51 SoC level instead.
Successfully tested with a high speed SD card on a mx51evk board.
Signed-off-by: Fabio Estevam <fabio.estevam@nxp.com>
Acked-by: Sebastien Bourdelin <sebastien.bourdelin@savoirfairelinux.com>
Diffstat (limited to 'board/engicam/icorem6_rqs/Makefile')
0 files changed, 0 insertions, 0 deletions