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authorGiuseppe CAVALLARO <peppe.cavallaro@st.com>2011-11-04 13:53:19 +0100
committerChris Ball <cjb@laptop.org>2012-01-11 23:58:40 -0500
commitdf16219f365f7f5a2d88a6e123251d57255cca3f (patch)
tree0eca076f1abf8a0161f8fb66e1f98b5a003c900b /include/linux/mmc
parent052d81da6e6f0f8839ef6d5a46f215fc8cd99d5a (diff)
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 'include/linux/mmc')
-rw-r--r--include/linux/mmc/host.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h
index a3ac9c48e5de..cea064f73514 100644
--- a/include/linux/mmc/host.h
+++ b/include/linux/mmc/host.h
@@ -323,6 +323,8 @@ struct mmc_host {
struct fault_attr fail_mmc_request;
#endif
+ unsigned int actual_clock; /* Actual HC clock rate */
+
unsigned long private[0] ____cacheline_aligned;
};