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OMAP2+: clock: disable autoidle on all clocks during clock init

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Disable autoidle on all clocks during clock framework initialization.
(If CONFIG_PM is set, autoidle is re-enabled for all clocks later in
the boot process.)

The principle behind this patch, and some similar patches, is that the
kernel should start with all power management features disabled.
Later in the boot process, the PM code, if compiled in with CONFIG_PM,
enables or re-enables power management features.

Signed-off-by: Paul Walmsley <paul@pwsan.com>
Tested-by: Rajendra Nayak <rnayak@ti.com>
Reviewed-by: Kevin Hilman <khilman@ti.com>
This commit is contained in:
Paul Walmsley
2011-02-25 15:49:53 -07:00
parent 70db8a6273
commit c6461f5c59
5 changed files with 14 additions and 4 deletions
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3
arch/arm/mach-omap2/clock2430_data.c
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@@ -2028,6 +2028,9 @@ int __init omap2430_clk_init(void)
omap2_init_clk_clkdm(c->lk.clk);
}
/* Disable autoidle on all clocks; let the PM code enable it later */
omap_clk_disable_autoidle_all();
/* Check the MPU rate set by bootloader */
clkrate = omap2xxx_clk_get_core_rate(&dpll_ck);
for (prcm = rate_table; prcm->mpu_speed; prcm++) {