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mfd: Initialize DB8500 PRCMU regs

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Some clocks may be force enabled when we probe the
driver, but they need to be turned off by default so
we have a known state. We call this the register
initialization function if we need more stuff in
there in the future.

Signed-off-by: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Mattias Nilsson 2011-08-12 10:27:50 +02:00 committed by Samuel Ortiz
parent a592c2e20f
commit d65e12d704
1 changed files with 12 additions and 0 deletions
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12
drivers/mfd/db8500-prcmu.c
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@ -1840,6 +1840,16 @@ void __init prcmu_early_init(void)
}
}
static void __init init_prcm_registers(void)
{
u32 val;
val = readl(PRCM_A9PL_FORCE_CLKEN);
val &= ~(PRCM_A9PL_FORCE_CLKEN_PRCM_A9PL_FORCE_CLKEN |
PRCM_A9PL_FORCE_CLKEN_PRCM_A9AXI_FORCE_CLKEN);
writel(val, (PRCM_A9PL_FORCE_CLKEN));
}
/*
* Power domain switches (ePODs) modeled as regulators for the DB8500 SoC
*/
@ -2038,6 +2048,8 @@ static int __init db8500_prcmu_probe(struct platform_device *pdev)
if (ux500_is_svp())
return -ENODEV;
init_prcm_registers();
/* Clean up the mailbox interrupts after pre-kernel code. */
writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR);