Hi, On an imx7d board running 5.10.y the following mmc2 timeout is observed: mmc2: Timeout waiting for hardware interrupt. mmc2: sdhci: ============ SDHCI REGISTER DUMP =========== mmc2: sdhci: Sys addr: 0x82f9425c | Version: 0x00000002 mmc2: sdhci: Blk size: 0x0000002c | Blk cnt: 0x00000001 mmc2: sdhci: Argument: 0x1410002c | Trn mode: 0x00000013 mmc2: sdhci: Present: 0x01d88a0a | Host ctl: 0x00000013 mmc2: sdhci: Power: 0x00000002 | Blk gap: 0x00000080 mmc2: sdhci: Wake-up: 0x00000008 | Clock: 0x0000003f mmc2: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000 mmc2: sdhci: Int enab: 0x107f100b | Sig enab: 0x107f100b mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000302 mmc2: sdhci: Caps: 0x07eb0000 | Caps_1: 0x0000b400 mmc2: sdhci: Cmd: 0x0000353a | Max curr: 0x00ffffff mmc2: sdhci: Resp[0]: 0x00001000 | Resp[1]: 0x00000000 mmc2: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000 mmc2: sdhci: Host ctl2: 0x00000000 mmc2: sdhci: ADMA Err: 0x00000007 | ADMA Ptr: 0x9c042200 mmc2: sdhci-esdhc-imx: ========= ESDHC IMX DEBUG STATUS DUMP ========= mmc2: sdhci-esdhc-imx: cmd debug status: 0x2100 mmc2: sdhci-esdhc-imx: data debug status: 0x2200 mmc2: sdhci-esdhc-imx: trans debug status: 0x2300 mmc2: sdhci-esdhc-imx: dma debug status: 0x2402 mmc2: sdhci-esdhc-imx: adma debug status: 0x25b4 mmc2: sdhci-esdhc-imx: fifo debug status: 0x2610 mmc2: sdhci-esdhc-imx: async fifo debug status: 0x2751 mmc2: sdhci: ============================================ The mmc2 interface is connected to an SDIO Wifi chip. This irq timeout occurs very rarely. Any suggestions on how to debug this? Thanks, Fabio Estevam
