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| author |   Mattias Nilsson <mattias.i.nilsson@stericsson.com> | 2011-08-12 10:27:50 +0200 |
|---|---|---|
| committer |   Samuel Ortiz <sameo@linux.intel.com> | 2011-10-24 14:09:18 +0200 |
| commit | d65e12d70436cfb2728a78aec3f7bc1cd79eaa34 (patch) | |
| tree | 1420e6831dc051fb9cc275c1e0499ad6304f1feb /drivers/mfd | |
| parent | mfd: Extend DB8500 PRCMU mailbox defs (diff) | |
| download | linux-dev-d65e12d70436cfb2728a78aec3f7bc1cd79eaa34.tar.xz linux-dev-d65e12d70436cfb2728a78aec3f7bc1cd79eaa34.zip | |
mfd: Initialize DB8500 PRCMU regs
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>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/db8500-prcmu.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c index dcc690efdc25..e2c4a26a9eb1 100644 --- a/drivers/mfd/db8500-prcmu.c +++ b/drivers/mfd/db8500-prcmu.c @@ -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); |