On Wed, 20 Nov 2024 at 09:28, Pankaj Pandey <pankaj.embedded@xxxxxxxxx> wrote:
>
> Hi All,
>
> My target board(ARMv8-A AArch32 processor), supports the "Synopsys DWC
> MSHC controller." I am using the Linux 5.4 kernel and have enabled the
> following configurations to support the "SDHCI platform driver for
> Synopsys DWC MSHC":
>
> CONFIG_MMC_SDHCI=y
> CONFIG_MMC_SDHCI_PLTFM=y
> CONFIG_MMC_SDHCI_OF_DWCMSHC=y
>
> This setup works perfectly on Linux 5.4, successfully detecting all
> microSD cards. However, when I use the same driver configuration with
> Linux 6.11.0, I encounter the below mentioned error:
>
> sdhci: Secure Digital Host Controller Interface driver
> sdhci: Copyright(c) Pierre Ossman
> sdhci-pltfm: SDHCI platform and OF driver helper
> mmc0: sdhci: Version: 0x00000005 | Present: 0x020f0000
> mmc0: sdhci: Caps: 0x276e648a | Caps_1: 0x08008071
> SMCCC: SOC_ID: ARCH_SOC_ID not implemented, skipping ....
> mmc0: sdhci: Auto-CMD23 available
> mmc0: SDHCI controller on 48102000.sdhci [48102000.sdhci] using ADMA
> mmc0: Timeout waiting for hardware cmd interrupt.
> mmc0: sdhci: ============ SDHCI REGISTER DUMP ===========
> mmc0: sdhci: Sys addr: 0x00000000 | Version: 0x00000005
> mmc0: sdhci: Blk size: 0x00000000 | Blk cnt: 0x00000000
> mmc0: sdhci: Argument: 0x00000c00 | Trn mode: 0x00000000
> mmc0: sdhci: Present: 0x020f0000 | Host ctl: 0x00000001
> mmc0: sdhci: Power: 0x0000000f | Blk gap: 0x00000000
> mmc0: sdhci: Wake-up: 0x00000000 | Clock: 0x0000fa07
> mmc0: sdhci: Timeout: 0x00000000 | Int stat: 0x00000000
> mmc0: sdhci: Int enab: 0x00ff1083 | Sig enab: 0x00ff1083
> mmc0: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
> mmc0: sdhci: Caps: 0x276e648a | Caps_1: 0x08008071
> mmc0: sdhci: Cmd: 0x0000341a | Max curr: 0x00000000
> mmc0: sdhci: Resp[0]: 0x00000000 | Resp[1]: 0x00000000
> mmc0: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
> mmc0: sdhci: Host ctl2: 0x00000000
> mmc0: sdhci: ADMA Err: 0x00000000 | ADMA Ptr: 0x00000000
> mmc0: sdhci: ============================================
> mmc0: Reset 0x2 never completed.
>
> =====================================================
>
> Please find mmc debug info and dts file changes for references:-
>
> root@devkit-e7:~# cat /sys/kernel/debug/mmc0/ios
> clock: 400000 Hz
> actual clock: 400000 Hz
> vdd: 21 (3.3 ~ 3.4 V)
> bus mode: 2 (push-pull)
> chip select: 1 (active high)
> power mode: 2 (on)
> bus width: 0 (1 bits)
> timing spec: 0 (legacy)
> signal voltage: 0 (3.30 V)
> driver type: 0 (driver type B)
>
> sdmmc: sdhci@48102000 {
> compatible = "snps,dwcmshc-sdhci";
> reg = <0x48102000 0x1000>;
> interrupts = <GIC_SPI 27 IRQ_TYPE_LEVEL_HIGH>,
> <GIC_SPI 28 IRQ_TYPE_LEVEL_HIGH>;
> clocks = <&syst_hclk>, <&syst_hclk>;
> clock-names = "core", "bus";
> bus-width = <4>;
> max-frequency = <25000000>;
> status = "okay";
> };
>
> Kindly request you to please let me know if I am missing anything.
Would it be possible for you to do a "git bisect" to see if we can
find if there is a particular commit causing the problem?
Moreover, we have v6.12 now, so it seems reasonable to give that a try too.
Kind regards
Uffe
