From: Shaik Sajida Bhanu <sbhanu@codeaurora.org>
To: adrian.hunter@intel.com, ulf.hansson@linaro.org
Cc: asutoshd@codeaurora.org, stummala@codeaurora.org,
vbadigan@codeaurora.org, rampraka@codeaurora.org,
sayalil@codeaurora.org, sartgarg@codeaurora.org,
rnayak@codeaurora.org, cang@codeaurora.org,
pragalla@codeaurora.org, nitirawa@codeaurora.org,
linux-mmc@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-arm-msm@vger.kernel.org, agross@kernel.org,
bjorn.andersson@linaro.org, robh+dt@kernel.org,
Shaik Sajida Bhanu <sbhanu@codeaurora.org>
Subject: [PATCH V1] mmc: sdhci: Update the software timeout value for sdhc
Date: Wed, 16 Jun 2021 14:55:35 +0530 [thread overview]
Message-ID: <1623835535-30871-1-git-send-email-sbhanu@codeaurora.org> (raw)
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@codeaurora.org>
---
drivers/mmc/host/sdhci.c | 9 ++++++++-
1 file changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
index bf238ad..1386f7d 100644
--- a/drivers/mmc/host/sdhci.c
+++ b/drivers/mmc/host/sdhci.c
@@ -1670,7 +1670,14 @@ static bool sdhci_send_command(struct sdhci_host *host, struct mmc_command *cmd)
else if (!cmd->data && cmd->busy_timeout > 9000)
timeout += DIV_ROUND_UP(cmd->busy_timeout, 1000) * HZ + HZ;
else
- timeout += 10 * HZ;
+ /*
+ * In some of the conditions hardware data timeout value could be
+ * approx 21.5 seconds and driver is setting software data timeout
+ * value less than the hardware data timeout value and software data
+ * timeout value should be more than the hardware data timeout value.
+ * So, set software data timeout value more than 21.5 sec i.e. 22sec.
+ */
+ timeout += 22 * HZ;
sdhci_mod_timer(host, cmd->mrq, timeout);
if (host->use_external_dma)
--
QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
of Code Aurora Forum, hosted by The Linux Foundation
next reply other threads:[~2021-06-16 9:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-06-16 9:25 Shaik Sajida Bhanu [this message]
2021-06-16 12:16 ` [PATCH V1] mmc: sdhci: Update the software timeout value for sdhc Konrad Dybcio
2021-06-18 15:30 ` Veerabhadrarao Badiganti
2021-06-18 22:49 ` Doug Anderson
2021-06-21 9:16 ` Adrian Hunter
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1623835535-30871-1-git-send-email-sbhanu@codeaurora.org \
--to=sbhanu@codeaurora.org \
--cc=adrian.hunter@intel.com \
--cc=agross@kernel.org \
--cc=asutoshd@codeaurora.org \
--cc=bjorn.andersson@linaro.org \
--cc=cang@codeaurora.org \
--cc=linux-arm-msm@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-mmc@vger.kernel.org \
--cc=nitirawa@codeaurora.org \
--cc=pragalla@codeaurora.org \
--cc=rampraka@codeaurora.org \
--cc=rnayak@codeaurora.org \
--cc=robh+dt@kernel.org \
--cc=sartgarg@codeaurora.org \
--cc=sayalil@codeaurora.org \
--cc=stummala@codeaurora.org \
--cc=ulf.hansson@linaro.org \
--cc=vbadigan@codeaurora.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).