diff options
| author | Giuseppe CAVALLARO <peppe.cavallaro@st.com> | 2011-11-04 13:53:19 +0100 |
|---|---|---|
| committer | Chris Ball <cjb@laptop.org> | 2012-01-11 23:58:40 -0500 |
| commit | df16219f365f7f5a2d88a6e123251d57255cca3f (patch) | |
| tree | 0eca076f1abf8a0161f8fb66e1f98b5a003c900b /drivers/mmc/core/debugfs.c | |
| parent | 052d81da6e6f0f8839ef6d5a46f215fc8cd99d5a (diff) | |
| download | linux-df16219f365f7f5a2d88a6e123251d57255cca3f.tar.bz2 | |
mmc: debugfs: expose the SDCLK frq in sys ios
This patch is to expose the actual SDCLK frequency in
/sys/kernel/debug/mmcX/ios entry.
For example, if the max clk for a normal speed card is 20MHz this
is reported in /sys/kernel/debug/mmcX/ios. Unfortunately the actual
SDCLK frequency (i.e. Baseclock / divisor) is not reported at all:
for example, in that case, on Arasan HC, it should be 48/4=12 (MHz).
Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Acked-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Chris Ball <cjb@laptop.org>
Diffstat (limited to 'drivers/mmc/core/debugfs.c')
| -rw-r--r-- | drivers/mmc/core/debugfs.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/mmc/core/debugfs.c b/drivers/mmc/core/debugfs.c index 3923880118b6..027615d3bf3e 100644 --- a/drivers/mmc/core/debugfs.c +++ b/drivers/mmc/core/debugfs.c @@ -57,6 +57,8 @@ static int mmc_ios_show(struct seq_file *s, void *data) const char *str; seq_printf(s, "clock:\t\t%u Hz\n", ios->clock); + if (host->actual_clock) + seq_printf(s, "actual clock:\t%u Hz\n", host->actual_clock); seq_printf(s, "vdd:\t\t%u ", ios->vdd); if ((1 << ios->vdd) & MMC_VDD_165_195) seq_printf(s, "(1.65 - 1.95 V)\n"); |