Hello, I tested the wireless chip wilc1000 with the 5.16.5 Kernel and the firmware v15.4.1 (https://git.kernel.org/pub/scm/linux/kernel/git/firmware/linux-firmware.git/tree/atmel/wilc1000_wifi_firmware-1.bin) on an i.MX6 QUAD with iperf3: # iperf3 -c IP_ADDR -P 16 -t 0 After a while the test gets stuck and I got the following kernel messages: mmc0: Timeout waiting for hardware interrupt. mmc0: sdhci: ============ SDHCI REGISTER DUMP =========== mmc0: sdhci: Sys addr: 0x138f0200 | Version: 0x00000002 mmc0: sdhci: Blk size: 0x00000158 | Blk cnt: 0x00000001 mmc0: sdhci: Argument: 0x14000158 | Trn mode: 0x00000013 mmc0: sdhci: Present: 0x01d88a0a | Host ctl: 0x00000013 mmc0: sdhci: Power: 0x00000002 | Blk gap: 0x00000080 mmc0: sdhci: Wake-up: 0x00000008 | Clock: 0x0000009f mmc0: sdhci: Timeout: 0x0000008f | Int stat: 0x00000000 mmc0: sdhci: Int enab: 0x107f100b | Sig enab: 0x107f100b mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000003 mmc0: sdhci: Caps: 0x07eb0000 | Caps_1: 0x0000a000 mmc0: sdhci: Cmd: 0x0000353a | Max curr: 0x00ffffff mmc0: sdhci: Resp[0]: 0x00001000 | Resp[1]: 0x00000000 mmc0: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000 mmc0: sdhci: Host ctl2: 0x00000000 mmc0: sdhci: ADMA Err: 0x00000007 | ADMA Ptr: 0x4c041200 mmc0: sdhci-esdhc-imx: ========= ESDHC IMX DEBUG STATUS DUMP ========= mmc0: sdhci-esdhc-imx: cmd debug status: 0x2100 mmc0: sdhci-esdhc-imx: data debug status: 0x2200 mmc0: sdhci-esdhc-imx: trans debug status: 0x2300 mmc0: sdhci-esdhc-imx: dma debug status: 0x2402 mmc0: sdhci-esdhc-imx: adma debug status: 0x25b4 mmc0: sdhci-esdhc-imx: fifo debug status: 0x2610 mmc0: sdhci-esdhc-imx: async fifo debug status: 0x2751 mmc0: sdhci: ============================================ wilc1000_sdio mmc0:0001:1: wilc_sdio_cmd53..failed, err(-110) wilc1000_sdio mmc0:0001:1: Failed cmd53 [0], bytes read... I tried to reduce the clock speed to 20MHz in the devicetree with max-frequency = <20000000>; but the problem then also occurs. Is this a possible bug? Thanks in advance and best regards Christoph
