On 5/07/21 5:09 pm, sbhanu@xxxxxxxxxxxxxx wrote:
> On 2021-07-01 22:28, sbhanu@xxxxxxxxxxxxxx wrote:
>> On 2021-06-30 19:38, Adrian Hunter wrote:
>>> On 27/06/21 5:40 pm, Shaik Sajida Bhanu wrote:
>>>> Whenever SDHC run at clock rate 50MHZ or below, the hardware data
>>>> timeout value will be 21.47secs, which is approx. 22secs and we have
>>>> a current software timeout value as 10secs. We have to set software
>>>> timeout value more than the hardware data timeout value to avioid seeing
>>>> the below register dumps.
>>>>
>>>> [ 332.953670] mmc2: Timeout waiting for hardware interrupt.
>>>> [ 332.959608] mmc2: sdhci: ============ SDHCI REGISTER DUMP ===========
>>>> [ 332.966450] mmc2: sdhci: Sys addr: 0x00000000 | Version: 0x00007202
>>>> [ 332.973256] mmc2: sdhci: Blk size: 0x00000200 | Blk cnt: 0x00000001
>>>> [ 332.980054] mmc2: sdhci: Argument: 0x00000000 | Trn mode: 0x00000027
>>>> [ 332.986864] mmc2: sdhci: Present: 0x01f801f6 | Host ctl: 0x0000001f
>>>> [ 332.993671] mmc2: sdhci: Power: 0x00000001 | Blk gap: 0x00000000
>>>> [ 333.000583] mmc2: sdhci: Wake-up: 0x00000000 | Clock: 0x00000007
>>>> [ 333.007386] mmc2: sdhci: Timeout: 0x0000000e | Int stat: 0x00000000
>>>> [ 333.014182] mmc2: sdhci: Int enab: 0x03ff100b | Sig enab: 0x03ff100b
>>>> [ 333.020976] mmc2: sdhci: ACmd stat: 0x00000000 | Slot int: 0x00000000
>>>> [ 333.027771] mmc2: sdhci: Caps: 0x322dc8b2 | Caps_1: 0x0000808f
>>>> [ 333.034561] mmc2: sdhci: Cmd: 0x0000183a | Max curr: 0x00000000
>>>> [ 333.041359] mmc2: sdhci: Resp[0]: 0x00000900 | Resp[1]: 0x00000000
>>>> [ 333.048157] mmc2: sdhci: Resp[2]: 0x00000000 | Resp[3]: 0x00000000
>>>> [ 333.054945] mmc2: sdhci: Host ctl2: 0x00000000
>>>> [ 333.059657] mmc2: sdhci: ADMA Err: 0x00000000 | ADMA Ptr:
>>>> 0x0000000ffffff218
>>>> [ 333.067178] mmc2: sdhci_msm: ----------- VENDOR REGISTER DUMP
>>>> -----------
>>>> [ 333.074343] mmc2: sdhci_msm: DLL sts: 0x00000000 | DLL cfg:
>>>> 0x6000642c | DLL cfg2: 0x0020a000
>>>> [ 333.083417] mmc2: sdhci_msm: DLL cfg3: 0x00000000 | DLL usr ctl:
>>>> 0x00000000 | DDR cfg: 0x80040873
>>>> [ 333.092850] mmc2: sdhci_msm: Vndr func: 0x00008a9c | Vndr func2 :
>>>> 0xf88218a8 Vndr func3: 0x02626040
>>>> [ 333.102371] mmc2: sdhci: ============================================
>>>>
>>>> So, set software timeout value more than hardware timeout value.
>>>>
>>>> Signed-off-by: Shaik Sajida Bhanu <sbhanu@xxxxxxxxxxxxxx>
>>>> ---
>>>>
>>>> Changes since V1:
>>>> - Moved software data timeout update part to qcom specific file as
>>>> suggested by Veerabhadrarao Badiganti.
>>>> ---
>>>> drivers/mmc/host/sdhci-msm.c | 9 +++++++++
>>>> 1 file changed, 9 insertions(+)
>>>>
>>>> diff --git a/drivers/mmc/host/sdhci-msm.c b/drivers/mmc/host/sdhci-msm.c
>>>> index e44b7a6..58e651e 100644
>>>> --- a/drivers/mmc/host/sdhci-msm.c
>>>> +++ b/drivers/mmc/host/sdhci-msm.c
>>>> @@ -2089,6 +2089,14 @@ static void sdhci_msm_cqe_disable(struct mmc_host *mmc, bool recovery)
>>>> sdhci_cqe_disable(mmc, recovery);
>>>> }
>>>>
>>>> +static void sdhci_msm_set_timeout(struct sdhci_host *host, struct mmc_command *cmd)
>>>> +{
>>>> +
>>>> + __sdhci_set_timeout(host, cmd);
>>>> + if (cmd && (cmd->data) && (host->clock > 400000) && (host->clock <= 50000000))
>>>
>>> There are some redundant parenthesis there and cmd is never NULL i.e. could be:
>>>
>>> if (cmd->data && host->clock > 400000 && host->clock <= 50000000)
>> Sure
> Hi,
>
> We are passing cmd as NULL in sdhci_cqe_enable( ) for eMMC so, i think we should check cmd.
Very true.
