Hi Tim,
On Wed, Nov 3, 2021 at 1:54 PM Tim Harvey <tharvey@xxxxxxxxxxxxx> wrote:
>
> On IMX SoC's which support CMDQ the following can occur during high a
> high cpu load:
>
> mmc2: cqhci: ============ CQHCI REGISTER DUMP ===========
> mmc2: cqhci: Caps: 0x0000310a | Version: 0x00000510
> mmc2: cqhci: Config: 0x00001001 | Control: 0x00000000
> mmc2: cqhci: Int stat: 0x00000000 | Int enab: 0x00000006
> mmc2: cqhci: Int sig: 0x00000006 | Int Coal: 0x00000000
> mmc2: cqhci: TDL base: 0x8003f000 | TDL up32: 0x00000000
> mmc2: cqhci: Doorbell: 0xbf01dfff | TCN: 0x00000000
> mmc2: cqhci: Dev queue: 0x00000000 | Dev Pend: 0x08000000
> mmc2: cqhci: Task clr: 0x00000000 | SSC1: 0x00011000
> mmc2: cqhci: SSC2: 0x00000001 | DCMD rsp: 0x00000800
> mmc2: cqhci: RED mask: 0xfdf9a080 | TERRI: 0x00000000
> mmc2: cqhci: Resp idx: 0x0000000d | Resp arg: 0x00000000
> mmc2: sdhci: ============ SDHCI REGISTER DUMP ===========
> mmc2: sdhci: Sys addr: 0x7c722000 | Version: 0x00000002
> mmc2: sdhci: Blk size: 0x00000200 | Blk cnt: 0x00000020
> mmc2: sdhci: Argument: 0x00018000 | Trn mode: 0x00000023
> mmc2: sdhci: Present: 0x01f88008 | Host ctl: 0x00000030
> mmc2: sdhci: Power: 0x00000002 | Blk gap: 0x00000080
> mmc2: sdhci: Wake-up: 0x00000008 | Clock: 0x0000000f
> mmc2: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000
> mmc2: sdhci: Int enab: 0x107f4000 | Sig enab: 0x107f4000
> mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000502
> mmc2: sdhci: Caps: 0x07eb0000 | Caps_1: 0x8000b407
> mmc2: sdhci: Cmd: 0x00000d1a | Max curr: 0x00ffffff
> mmc2: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0xffc003ff
> mmc2: sdhci: Resp[2]: 0x328f5903 | Resp[3]: 0x00d07f01
> mmc2: sdhci: Host ctl2: 0x00000088
> mmc2: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0xfe179020
> mmc2: sdhci-esdhc-imx: ========= ESDHC IMX DEBUG STATUS DUMP ====
> mmc2: sdhci-esdhc-imx: cmd debug status: 0x2120
> mmc2: sdhci-esdhc-imx: data debug status: 0x2200
> mmc2: sdhci-esdhc-imx: trans debug status: 0x2300
> mmc2: sdhci-esdhc-imx: dma debug status: 0x2400
> mmc2: sdhci-esdhc-imx: adma debug status: 0x2510
> mmc2: sdhci-esdhc-imx: fifo debug status: 0x2680
> mmc2: sdhci-esdhc-imx: async fifo debug status: 0x2750
> mmc2: sdhci: ============================================
>
> For now, disable CMDQ support on the imx8qm/imx8qxp/imx8mm until the
> issue is found and resolved.
>
> Fixes: bb6e358169bf6 ("mmc: sdhci-esdhc-imx: add CMDQ support")
> Fixes: cde5e8e9ff146 ("mmc: sdhci-esdhc-imx: Add an new esdhc_soc_data
> for i.MX8MM")
>
> Cc: stable@xxxxxxxxxxxxxxx
> Signed-off-by: Tim Harvey <tharvey@xxxxxxxxxxxxx>
It seem this is the best approach we can do at the moment, until
the ESDHC_FLAG_CQHCI issue is debugged.
Reviewed-by: Fabio Estevam <festevam@xxxxxxxxx>
