We have a problem when trying to enable the eMMC (soldered-chip) at picozed (zynq zc702) evalutation board at Linux.
The board is rev. E.
We are using an HDF file from our firmware engineer which enabled the ps7_sd_0 and ps7_sd_1 entities. The good thing is that we can fully use the eMMC at u-boot (using mmc tool) -built from Xilinx repo (u-boot-xlnx-2019.01).
We are building linux kernel 4.19.0 from Xilinx repository and tried various device trees (the deafult disable the eMMC chip)- but non of them are working.
We get the following error when booting linux:
mmc1: Got command interrupt 0x00030000 even though no command operation was in progress.
sdhci: =========== SDHCI REGISTER DUMP ===========
sdhci: Sys addr: 0x00000000 | Version: 0x00008901
sdhci: Blk size: 0x00000000 | Blk cnt: 0x00000000
sdhci: Argument: 0x00000000 | Trn mode: 0x00000000
sdhci: Present: 0x00ef0000 | Host ctl: 0x00000001
sdhci: Power: 0x0000000f | Blk gap: 0x00000000
sdhci: Wake-up: 0x00000000 | Clock: 0x00004007
sdhci: Timeout: 0x00000000 | Int stat: 0x00000000
sdhci: Int enab: 0x00ff0003 | Sig enab: 0x00ff0003
sdhci: AC12 err: 0x00000000 | Slot int: 0x00000000
sdhci: Caps: 0x69ec0080 | Caps_1: 0x00000000
sdhci: Cmd: 0x0000371a | Max curr: 0x00000001
sdhci: Host ctl2: 0x00000000
sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
We tried the following previously supported answers:
Note that we are not using the SDIO via EMIO (only directly from PS pins/mux).
Also, tried to add into the device-tree the "wp-inverted;" property as suggested at this forum:
But still no progress - please your help.