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Tim Harvey
adab993c25
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:bb6e358169("mmc: sdhci-esdhc-imx: add CMDQ support") Fixes:cde5e8e9ff("mmc: sdhci-esdhc-imx: Add an new esdhc_soc_data for i.MX8MM") Cc: [email protected] Signed-off-by: Tim Harvey <[email protected]> Reviewed-by: Haibo Chen <[email protected]> Acked-by: Adrian Hunter <[email protected]> Link: https://lore.kernel.org/r/[email protected] Signed-off-by: Ulf Hansson <[email protected]>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.