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| author | Fabio Estevam <fabio.estevam@nxp.com> | 2017-11-03 15:40:10 (GMT) |
|---|---|---|
| committer | Stefano Babic <sbabic@denx.de> | 2017-11-07 09:13:11 (GMT) |
| commit | b2e6ad451b193e848c2736299ec59389449f3d12 (patch) | |
| tree | f5ad4aca22c7f0818f247a760a7e47ade15ab940 /arch | |
| 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 'arch')
| -rw-r--r-- | arch/arm/mach-imx/mx5/Kconfig | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/arm/mach-imx/mx5/Kconfig b/arch/arm/mach-imx/mx5/Kconfig index ef37c35..d96020d 100644 --- a/arch/arm/mach-imx/mx5/Kconfig +++ b/arch/arm/mach-imx/mx5/Kconfig @@ -6,6 +6,7 @@ config MX5 config MX51 bool + select SYS_FSL_ERRATUM_ESDHC_A001 config MX53 bool @@ -52,7 +53,6 @@ config TARGET_MX53SMD config TARGET_TS4800 bool "Support TS4800" select MX51 - select SYS_FSL_ERRATUM_ESDHC_A001 config TARGET_USBARMORY bool "Support USB armory" |