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authorHiroshi DOYU <Hiroshi.DOYU@nokia.com>2008-07-03 12:24:41 +0300
committerTony Lindgren <tony@atomide.com>2008-07-03 12:24:41 +0300
commit137b3ee27ab1b27dba081542476054836978ca45 (patch)
tree53857cbfa413b112a1fc60d364e9f1d3b2e8591f /include/asm-arm/arch-omap
parent44f78f43b349d19d378a996c4a2d9fcdff771b1e (diff)
ARM: OMAP: CLKFW: Initial debugfs support for omap clock framework
debugfs can provide the infrastructure to trace the dependencies of clock tree hierarchy quite visibly. This patch enables to keep track of clock tree hierarchy and expose their attributes under each clock directry as below: omap:~# tree -d -L 2 /debug/clock/omap_32k_fck/ /debug/clock/omap_32k_fck/ |-- gpt10_fck |-- gpt11_fck |-- gpt1_fck |-- per_32k_alwon_fck | |-- gpio2_fck | |-- gpio3_fck | |-- gpio4_fck | |-- gpio5_fck | |-- gpio6_fck | `-- wdt3_fck |-- ts_fck `-- wkup_32k_fck |-- gpio1_fck `-- wdt2_fck 14 directories omap:~# tree /debug/clock/omap_32k_fck/gpt10_fck/ /debug/clock/omap_32k_fck/gpt10_fck/ |-- flags |-- rate `-- usecount 0 directories, 3 files Although, compared with David Brownell's small patch, this may look bit overkilling, I expect that this debugfs can deal with other PRCM complexities at the same time. For example, powerdomain dependencies can be expressed by using symbolic links of these clocks if powerdomain supports dubgfs as well. Signed-off-by: Hiroshi DOYU <Hiroshi.DOYU@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'include/asm-arm/arch-omap')
-rw-r--r--include/asm-arm/arch-omap/clock.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-arm/arch-omap/clock.h b/include/asm-arm/arch-omap/clock.h
index 12a5e4de9518..8490fbba39d1 100644
--- a/include/asm-arm/arch-omap/clock.h
+++ b/include/asm-arm/arch-omap/clock.h
@@ -71,6 +71,9 @@ struct clk {
__u8 rate_offset;
__u8 src_offset;
#endif
+#if defined(CONFIG_PM_DEBUG) && defined(CONFIG_DEBUG_FS)
+ struct dentry *dent; /* For visible tree hierarchy */
+#endif
};
struct cpufreq_frequency_table;