From d65e12d70436cfb2728a78aec3f7bc1cd79eaa34 Mon Sep 17 00:00:00 2001 From: Mattias Nilsson Date: Fri, 12 Aug 2011 10:27:50 +0200 Subject: [PATCH] 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 Signed-off-by: Linus Walleij Signed-off-by: Samuel Ortiz --- drivers/mfd/db8500-prcmu.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) 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); -- GitLab