diff options
Diffstat (limited to 'arch/arm/mach-omap2/clock.c')
| -rw-r--r-- | arch/arm/mach-omap2/clock.c | 25 |
1 files changed, 20 insertions, 5 deletions
diff --git a/arch/arm/mach-omap2/clock.c b/arch/arm/mach-omap2/clock.c index 999b91e023b1..3bb3292ec469 100644 --- a/arch/arm/mach-omap2/clock.c +++ b/arch/arm/mach-omap2/clock.c @@ -57,7 +57,7 @@ u8 cpu_mask; static void _omap2_module_wait_ready(struct clk *clk) { void __iomem *companion_reg, *idlest_reg; - u8 other_bit, idlest_bit; + u8 other_bit, idlest_bit, idlest_val; /* Not all modules have multiple clocks that their IDLEST depends on */ if (clk->ops->find_companion) { @@ -66,9 +66,10 @@ static void _omap2_module_wait_ready(struct clk *clk) return; } - clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit); + clk->ops->find_idlest(clk, &idlest_reg, &idlest_bit, &idlest_val); - omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), clk->name); + omap2_cm_wait_idlest(idlest_reg, (1 << idlest_bit), idlest_val, + clk->name); } /* Enables clock without considering parent dependencies or use count @@ -175,7 +176,8 @@ void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg, * omap2_clk_dflt_find_idlest - find CM_IDLEST reg va, bit shift for @clk * @clk: struct clk * to find IDLEST info for * @idlest_reg: void __iomem ** to return the CM_IDLEST va in - * @idlest_bit: u8 ** to return the CM_IDLEST bit shift in + * @idlest_bit: u8 * to return the CM_IDLEST bit shift in + * @idlest_val: u8 * to return the idle status indicator * * Return the CM_IDLEST register address and bit shift corresponding * to the module that "owns" this clock. This default code assumes @@ -185,13 +187,26 @@ void omap2_clk_dflt_find_companion(struct clk *clk, void __iomem **other_reg, * CM_IDLEST2). This is not true for all modules. No return value. */ void omap2_clk_dflt_find_idlest(struct clk *clk, void __iomem **idlest_reg, - u8 *idlest_bit) + u8 *idlest_bit, u8 *idlest_val) { u32 r; r = (((__force u32)clk->enable_reg & ~0xf0) | 0x20); *idlest_reg = (__force void __iomem *)r; *idlest_bit = clk->enable_bit; + + /* + * 24xx uses 0 to indicate not ready, and 1 to indicate ready. + * 34xx reverses this, just to keep us on our toes + * AM35xx uses both, depending on the module. + */ + if (cpu_is_omap24xx()) + *idlest_val = OMAP24XX_CM_IDLEST_VAL; + else if (cpu_is_omap34xx()) + *idlest_val = OMAP34XX_CM_IDLEST_VAL; + else + BUG(); + } int omap2_dflt_clk_enable(struct clk *clk) |