From: Balaji T K <balajitk@ti.com>
To: linux-mmc@vger.kernel.org, cjb@laptop.org, tony@atomide.com
Cc: linux-omap@vger.kernel.org, Balaji T K <balajitk@ti.com>
Subject: [PATCH 4/5] mmc: omap_hsmmc: correct max value of clkd
Date: Mon, 21 Oct 2013 00:25:21 +0530 [thread overview]
Message-ID: <1382295322-18995-4-git-send-email-balajitk@ti.com> (raw)
In-Reply-To: <1382295322-18995-1-git-send-email-balajitk@ti.com>
clock divisor can take a max value of 1023.
Update code so that card init can be handled at f_min even at
higher IP clock frequencies from which clock to the card is
derived.
Signed-off-by: Balaji T K <balajitk@ti.com>
---
drivers/mmc/host/omap_hsmmc.c | 5 +++--
1 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/drivers/mmc/host/omap_hsmmc.c b/drivers/mmc/host/omap_hsmmc.c
index 9f74a57..60db34d 100644
--- a/drivers/mmc/host/omap_hsmmc.c
+++ b/drivers/mmc/host/omap_hsmmc.c
@@ -75,6 +75,7 @@
#define ICE 0x1
#define ICS 0x2
#define CEN (1 << 2)
+#define CLKD_MAX 0x3FF /* max clock divisor: 1023 */
#define CLKD_MASK 0x0000FFC0
#define CLKD_SHIFT 6
#define DTO_MASK 0x000F0000
@@ -497,8 +498,8 @@ static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios)
if (ios->clock) {
dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock);
- if (dsor > 250)
- dsor = 250;
+ if (dsor > CLKD_MAX)
+ dsor = CLKD_MAX;
}
return dsor;
--
1.7.5.4
next prev parent reply other threads:[~2013-10-20 18:55 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-10-20 18:55 [PATCH 1/5] mmc: omap_hsmmc: Fix pbias_disable for omap4 Balaji T K
2013-10-20 18:55 ` [PATCH 2/5] mmc: omap_hsmmc: context save and restore for DT Balaji T K
2013-10-20 18:55 ` [PATCH 3/5] mmc: omap_hsmmc: fix timeout for cmd and data soft reset Balaji T K
2013-10-20 18:55 ` Balaji T K [this message]
2013-10-20 18:55 ` [PATCH 5/5] mmc: omap_hsmmc: remove unused no_off Balaji T K
2013-10-27 1:30 ` [PATCH 1/5] mmc: omap_hsmmc: Fix pbias_disable for omap4 Chris Ball
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