OMAP2+: clock: autoidle as many clocks as possible if CONFIG_OMAP_RESET_CLOCKS

Attempt to enable autoidle for as many clocks as possible in the
OMAP2+-common CONFIG_OMAP_RESET_CLOCKS code.  Currently, this only
enables DPLL autoidle for OMAP3/4 DPLLs; but future patches will
enable autoidle for other clocks and the OMAP2 DPLL/APLLs.

In the long run, we should probably get rid of
CONFIG_OMAP_RESET_CLOCKS, and unconditionally run the code that it
selects.  Otherwise, the state of the clock tree won't match the
hardware state - this could result in clocks being enabled or disabled
unpredictably.

Based on a patch by Rajendra Nayak <rnayak@ti.com> that did this in
the pm34xx.c/pm44xx.c code.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Cc: Rajendra Nayak <rnayak@ti.com>

diff --git a/arch/arm/mach-omap2/pm34xx.c b/arch/arm/mach-omap2/pm34xx.c
index eda9a4e..a99f296 100644 (file)
--- a/arch/arm/mach-omap2/pm34xx.c
+++ b/arch/arm/mach-omap2/pm34xx.c
@@ -813,23 +813,6 @@ static void __init prcm_setup_regs(void)
 
        omap_ctrl_writel(OMAP3430_AUTOIDLE_MASK, OMAP2_CONTROL_SYSCONFIG);
 
-       /*
-        * Set all plls to autoidle. This is needed until autoidle is
-        * enabled by clockfw
-        */
-       omap2_cm_write_mod_reg(1 << OMAP3430_AUTO_IVA2_DPLL_SHIFT,
-                        OMAP3430_IVA2_MOD, CM_AUTOIDLE2);
-       omap2_cm_write_mod_reg(1 << OMAP3430_AUTO_MPU_DPLL_SHIFT,
-                        MPU_MOD,
-                        CM_AUTOIDLE2);
-       omap2_cm_write_mod_reg((1 << OMAP3430_AUTO_PERIPH_DPLL_SHIFT) |
-                        (1 << OMAP3430_AUTO_CORE_DPLL_SHIFT),
-                        PLL_MOD,
-                        CM_AUTOIDLE);
-       omap2_cm_write_mod_reg(1 << OMAP3430ES2_AUTO_PERIPH2_DPLL_SHIFT,
-                        PLL_MOD,
-                        CM_AUTOIDLE2);
-
        /*
         * Enable control of expternal oscillator through
         * sys_clkreq. In the long run clock framework should

diff --git a/arch/arm/plat-omap/clock.c b/arch/arm/plat-omap/clock.c
index 0ae0eae..2770ddd 100644 (file)
--- a/arch/arm/plat-omap/clock.c
+++ b/arch/arm/plat-omap/clock.c
@@ -446,6 +446,7 @@ static int __init clk_disable_unused(void)
        return 0;
 }
 late_initcall(clk_disable_unused);
+late_initcall(omap_clk_enable_autoidle_all);
 #endif
 
 int __init clk_init(struct clk_functions * custom_clocks)