visionfive: mmc0: error -110 whilst initialising SD card

[andreas-schwab]

The latest update of the visionfive branch (on top of v6.6-rc6) appears to have broken the MMC driver.

[ 9.173217][ T310] Synopsys Designware Multimedia Card Interface Driver
[ 9.482677][ T11] dw_mmc 10000000.mmc: IDMAC supports 32-bit address mode.
[ 9.527920][ T29] dw_mmc 10010000.mmc: IDMAC supports 32-bit address mode.
[ 9.556013][ T11] dw_mmc 10000000.mmc: Using internal DMA controller.
[ 9.566566][ T29] dw_mmc 10010000.mmc: Using internal DMA controller.
[ 9.569504][ T11] dw_mmc 10000000.mmc: Version ID is 290a
[ 9.576195][ T29] dw_mmc 10010000.mmc: Version ID is 290a
[ 9.576285][ T29] dw_mmc 10010000.mmc: DW MMC controller at irq 28,32 bit host data width,32 deep fifo
[ 9.591151][ T11] dw_mmc 10000000.mmc: DW MMC controller at irq 27,32 bit host data width,32 deep fifo
[ 9.600936][ T29] dw_mmc 10010000.mmc: allocated mmc-pwrseq
[ 9.609686][ T11] mmc_host mmc0: card is polling.
[ 9.614854][ T29] mmc_host mmc1: card is non-removable.
[ 9.632008][ T11] mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req 400000Hz, actual 400000HZ div = 125)
[ 9.652008][ T29] mmc_host mmc1: Bus speed (slot 0) = 123750000Hz (slot req 400000Hz, actual 399193HZ div = 155)
[ 9.853844][ T24] mmc_host mmc1: Bus speed (slot 0) = 123750000Hz (slot req 50000000Hz, actual 30937500HZ div = 2)
[ 9.872146][ T24] mmc1: new high speed SDIO card at address 0001
[ 9.898833][ T8] mmc0: problem reading SD Status register
[ 10.015447][ T8] mmc0: error -110 whilst initialising SD card
[ 10.035348][ T8] mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req
300000Hz, actual 299401HZ div = 167)
[ 10.348690][ T8] mmc0: error -110 whilst initialising SD card
[ 10.369598][ T8] mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req
200000Hz, actual 200000HZ div = 250)
[ 10.578746][ T8] mmc0: problem reading SD Status register
[ 10.705388][ T8] mmc_host mmc0: Bus speed (slot 0) = 100000000Hz (slot req
50000000Hz, actual 50000000HZ div = 1)
[ 10.716070][ T8] mmc0: new high speed SDHC card at address aaaa
[ 10.788096][ T341] mmcblk0: mmc0:aaaa SC32G 29.7 GiB
[ 10.921993][ C0] dw_mmc 10000000.mmc: Unexpected command timeout, state 3
[ 11.135328][ C0] dw_mmc 10000000.mmc: Unexpected command timeout, state 3

With the previous patchset rebased onto v6.6-rc6 it was working fine.

[esmil]

Hi Andreas. It works fine here. Did you enable CONFIG_NONPORTABLE and CONFIG_ERRATA_STARFIVE_JH7100 ?

I just noticed I forgot to add that to the visionfive_defconfig, so I've just pushed a commit fixing that.

[andreas-schwab]

CONFIG_ERRATA_STARFIVE_JH7100 is enabled.

[andreas-schwab]

You can get images from https://download.opensuse.org/repositories/devel:/RISCV:/Factory:/Contrib:/StarFive/images/

[esmil]

Interesting. The only change between the previous version and this v6.6-rc6 version is the added depends NONPORTABLE on the CONFIG_ERRATA_STARFIVE_JH7100 so if it's not your config then it must be an change in the mmc driver between the two rc's

[esmil]

Could you try the visionfive_defconfig and see if that works for you? That works here.

[andreas-schwab]

Why do you need NONPORTABLE?

[esmil]

Because it turns out DMA_GLOBAL_POOL is mutually exclusive with any other way of handling DMA memory. This was found because the Renesas RZ/Five also uses and enabled DMA_GLOBAL_POOL in the RISC-V defconfig and that broke DMA memory allocations for other platforms.

[andreas-schwab]

Since my base config has NONPORTABLE disabled this has caused ERRATA_STARFIVE_JH7100 to be silently disabled.