From: "Niklas Söderlund" <niklas.soderlund@ragnatech.se>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>,
Masahiro Yamada <yamada.masahiro@socionext.com>,
Ulf Hansson <ulf.hansson@linaro.org>,
linux-mmc@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
"Masaharu Hayakawa" <masaharu.hayakawa.ry@renesas.com>,
"Takeshi Saito" <takeshi.saito.xv@renesas.com>,
"Niklas Söderlund" <niklas.soderlund+renesas@ragnatech.se>
Subject: [PATCH] mmc: tmio: delete wait in tuning process
Date: Thu, 1 Nov 2018 00:00:43 +0100 [thread overview]
Message-ID: <20181031230043.1302-1-niklas.soderlund@ragnatech.se> (raw)
From: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
The manual does not contain information that a wait is needed in the
tuning process, this might be a leftover from early development.
Removing the wait don't have any effect on operation so delete the wait
to shorten the initialization time.
Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
Signed-off-by: Takeshi Saito <takeshi.saito.xv@renesas.com>
[Niklas: fixup commit message]
Signed-off-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
---
drivers/mmc/host/tmio_mmc_core.c | 2 --
1 file changed, 2 deletions(-)
diff --git a/drivers/mmc/host/tmio_mmc_core.c b/drivers/mmc/host/tmio_mmc_core.c
index 8d64f6196f33e882..a8f917f744fb9f63 100644
--- a/drivers/mmc/host/tmio_mmc_core.c
+++ b/drivers/mmc/host/tmio_mmc_core.c
@@ -734,8 +734,6 @@ static int tmio_mmc_execute_tuning(struct mmc_host *mmc, u32 opcode)
ret = mmc_send_tuning(mmc, opcode, NULL);
if (ret == 0)
set_bit(i, host->taps);
-
- usleep_range(1000, 1200);
}
ret = host->select_tuning(host);
--
2.19.1
next reply other threads:[~2018-11-01 8:01 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-31 23:00 Niklas Söderlund [this message]
2018-11-01 19:00 ` [PATCH] mmc: tmio: delete wait in tuning process Wolfram Sang
2018-11-01 19:34 ` Wolfram Sang
2018-11-02 11:55 ` Simon Horman
2018-11-19 12:07 ` Ulf Hansson
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