Hi Ulf/Isheng/Shawn/Liming,
For reference please find my dts changes for sdhci:
====================================================
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>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_sdhci>;
status = "okay";
};
====================================================
My Soc is based on Cortex-A32 processor. Clock feeding to SD clk is
200MHz and max-frequency supported is 25Mhz.
For reference please find mmc debug messages from sys fs during card
detect stage:
==========================================================================
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)
=====================================================================
If you have any pointers please suggest, your inputs are highly appreciated..
Regards,
Pankaj Pandey
On Fri, Nov 22, 2024 at 9:45 PM Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
>
> + Shawn, Liming, Yifeng,
>
> On Fri, 22 Nov 2024 at 08:09, Pankaj Pandey <pankaj.embedded@xxxxxxxxx> wrote:
> >
> > Hi Ulf,
> >
> > Tried in linux-6.12 but observed same issue there also:
> >
> > =========================================================
> > devkit-e7 login: 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: 0x03ff0000 | 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: 0x00ff1003 | Sig enab: 0x00ff1003
> > 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.
> > =======================================================
> >
> > Regards,
> > Pankaj Pandey
>
> Thanks Pankaj,
>
> It's not entirely easy to tell what goes wrong - and a lot of changes
> have happened since v5.4.
>
> I guess a git bisect would help us to narrow down when things got
> screwed up. If you have the time to do that, that would greatly help I
> think.
>
> I have looped in some more of the driver authors to see if someone has
> an idea where to start looking.
>
> In the meantime, it would be useful to get some more information about
> your platform and a pointer to some DTS files.
>
> Kind regards
> Uffe
>
> >
> > On Wed, Nov 20, 2024 at 6:34 PM Ulf Hansson <ulf.hansson@xxxxxxxxxx> wrote:
> > >
> > > 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
