SD Card commands failing after successful tuning

[brianpaiva]

I have an LS1043ARDB and UHS-I SD Card.  When inserting the SD card I configure the CPLD to use 1.8V and the device starts tuning.  After finishing tuning successfully I successfully configure the SD Card as a SDR104 card.  Immediately after this I receive a bunch of SD commands that fail.  The command is to read a single block and it and every command afterwards fail with a CRC error and a timeout, until my code switches back to 3.3V mode and the SD Card is not visible.  What could be causing it?  Here is what I see:

ERROR CMD17, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD12, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
ERROR CMD13, IRQSTAT: CTOE|CCE AUTOCERR_SYSCTL2: UHSM(011b - SDR104 for SD)|SMPCLKSEL
Switched CPLD to 3.3V
ERROR CMD8, IRQSTAT: CC|CTOE AUTOCERR_SYSCTL2: SMPCLKSEL
SUCCESS CMD0, IRQSTAT: CC AUTOCERR_SYSCTL2: SMPCLKSEL
SUCCESS CMD8, IRQSTAT: CC AUTOCERR_SYSCTL2: SMPCLKSEL
SUCCESS CMD55, IRQSTAT: CC AUTOCERR_SYSCTL2: SMPCLKSEL
SUCCESS CMD41, IRQSTAT: CC AUTOCERR_SYSCTL2: SMPCLKSEL
SUCCESS CMD55, IRQSTAT: CC AUTOCERR_SYSCTL2: SMPCLKSEL
SUCCESS CMD41, IRQSTAT: CC AUTOCERR_SYSCTL2: SMPCLKSEL

[yipingwang]

Hello Brian Paiva,

There is hardware limitation on LS1043ARDB, you need fix the hardware to implement "sdhc_vs" volatge switch.

For the software, SDK 2.0 1703 release has already provided HS200/UHS-1 Linux driver, you need to add HS200/UHS-1 properties in eSDHC node to support these speed modes in driver. Please add the following in the file arch/arm64/boot/dts/freescale/fsl-ls1043a-rdb.dts.

+&esdhc {
+    mmc-hs200-1_8v;
+    sd-uhs-sdr104;
+    sd-uhs-sdr50;
+    sd-uhs-sdr25;
+    sd-uhs-sdr12;
+};
+

You could refer to arch/arm64/boot/dts/freescale/fsl-ls1046a-rdb.dts as an example.

Have a great day,
TIC

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[brianpaiva]

Hi yipingwang, I was under the impression that sdhc_vs is only needed if you have an external source to swap to 1.8V.  On the LS1043ARDB this is done in the CPLD using CPLD_SOFT_MUX_ON.EVDD_CTRL_EN and CPLD_EVDD_SEL.

I do have SDR104 support because it is working on the LS1012A.