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authorTony Lindgren <tony@atomide.com>2009-05-26 14:41:35 -0700
committerTony Lindgren <tony@atomide.com>2009-05-26 14:41:35 -0700
commit88b6f7eb9b4a06fbfe27f2d98e249577f4cfdaef (patch)
tree9ef0d7ecd3e0551ca4d13ac0134aeb3ecd8558c7 /arch/arm/plat-omap
parent8f9ccfeeb2cecb54dd093119291ab271ab0fd94a (diff)
parent7971687094ef48695aa56a0c03416b609bd4d1fd (diff)
Merge branch 'omap-clock-upstream' of git://git.pwsan.com/linux-2.6 into for-next
Diffstat (limited to 'arch/arm/plat-omap')
-rw-r--r--arch/arm/plat-omap/clock.c4
-rw-r--r--arch/arm/plat-omap/include/mach/clock.h2
-rw-r--r--arch/arm/plat-omap/include/mach/sram.h6
-rw-r--r--arch/arm/plat-omap/sram.c16
4 files changed, 20 insertions, 8 deletions
diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 29efc279287..508c96ab24e 100644
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -240,13 +240,13 @@ void recalculate_root_clocks(void)
}
/**
- * clk_init_one - initialize any fields in the struct clk before clk init
+ * clk_preinit - initialize any fields in the struct clk before clk init
* @clk: struct clk * to initialize
*
* Initialize any struct clk fields needed before normal clk initialization
* can run. No return value.
*/
-void clk_init_one(struct clk *clk)
+void clk_preinit(struct clk *clk)
{
INIT_LIST_HEAD(&clk->children);
}
diff --git a/arch/arm/plat-omap/include/mach/clock.h b/arch/arm/plat-omap/include/mach/clock.h
index 073a2c5569f..d7bd19c8ce3 100644
--- a/arch/arm/plat-omap/include/mach/clock.h
+++ b/arch/arm/plat-omap/include/mach/clock.h
@@ -119,7 +119,7 @@ struct clk_functions {
extern unsigned int mpurate;
extern int clk_init(struct clk_functions *custom_clocks);
-extern void clk_init_one(struct clk *clk);
+extern void clk_preinit(struct clk *clk);
extern int clk_register(struct clk *clk);
extern void clk_reparent(struct clk *child, struct clk *parent);
extern void clk_unregister(struct clk *clk);
diff --git a/arch/arm/plat-omap/include/mach/sram.h b/arch/arm/plat-omap/include/mach/sram.h
index ab35d622dcf..dca7c16ae90 100644
--- a/arch/arm/plat-omap/include/mach/sram.h
+++ b/arch/arm/plat-omap/include/mach/sram.h
@@ -23,7 +23,8 @@ extern u32 omap2_set_prcm(u32 dpll_ctrl_val, u32 sdrc_rfr_val, int bypass);
extern u32 omap3_configure_core_dpll(u32 sdrc_rfr_ctrl,
u32 sdrc_actim_ctrla,
- u32 sdrc_actim_ctrlb, u32 m2);
+ u32 sdrc_actim_ctrlb, u32 m2,
+ u32 unlock_dll);
/* Do not use these */
extern void omap1_sram_reprogram_clock(u32 ckctl, u32 dpllctl);
@@ -60,7 +61,8 @@ extern unsigned long omap243x_sram_reprogram_sdrc_sz;
extern u32 omap3_sram_configure_core_dpll(u32 sdrc_rfr_ctrl,
u32 sdrc_actim_ctrla,
- u32 sdrc_actim_ctrlb, u32 m2);
+ u32 sdrc_actim_ctrlb, u32 m2,
+ u32 unlock_dll);
extern unsigned long omap3_sram_configure_core_dpll_sz;
#endif
diff --git a/arch/arm/plat-omap/sram.c b/arch/arm/plat-omap/sram.c
index e1493d83a7c..4f0145d2624 100644
--- a/arch/arm/plat-omap/sram.c
+++ b/arch/arm/plat-omap/sram.c
@@ -201,6 +201,15 @@ void __init omap_map_sram(void)
base = OMAP3_SRAM_PA;
base = ROUND_DOWN(base, PAGE_SIZE);
omap_sram_io_desc[0].pfn = __phys_to_pfn(base);
+
+ /*
+ * SRAM must be marked as non-cached on OMAP3 since the
+ * CORE DPLL M2 divider change code (in SRAM) runs with the
+ * SDRAM controller disabled, and if it is marked cached,
+ * the ARM may attempt to write cache lines back to SDRAM
+ * which will cause the system to hang.
+ */
+ omap_sram_io_desc[0].type = MT_MEMORY_NONCACHED;
}
omap_sram_io_desc[0].length = 1024 * 1024; /* Use section desc */
@@ -343,14 +352,15 @@ static inline int omap243x_sram_init(void)
static u32 (*_omap3_sram_configure_core_dpll)(u32 sdrc_rfr_ctrl,
u32 sdrc_actim_ctrla,
u32 sdrc_actim_ctrlb,
- u32 m2);
+ u32 m2, u32 unlock_dll);
u32 omap3_configure_core_dpll(u32 sdrc_rfr_ctrl, u32 sdrc_actim_ctrla,
- u32 sdrc_actim_ctrlb, u32 m2)
+ u32 sdrc_actim_ctrlb, u32 m2, u32 unlock_dll)
{
BUG_ON(!_omap3_sram_configure_core_dpll);
return _omap3_sram_configure_core_dpll(sdrc_rfr_ctrl,
sdrc_actim_ctrla,
- sdrc_actim_ctrlb, m2);
+ sdrc_actim_ctrlb, m2,
+ unlock_dll);
}
/* REVISIT: Should this be same as omap34xx_sram_init() after off-idle? */