arm/tegra: Harmony: Configure PMC for low-level interrupts
Without this, the PMC continually detects an interrupt when the PMU_IRQ line is high, causing the tps6686x IRQ handler thread to hog an entire CPU. This change was originally written by Wei Ni <wni@nvidia.com> for Seaboard in the ChromeOS kernel. Long-term, this should probably be moved into some kind of PMU driver, or perhaps integrated into the GPIO/IRQ/pinmux system? Signed-off-by: Stephen Warren <swarren@nvidia.com> Signed-off-by: Olof Johansson <olof@lixom.net>
This commit is contained in:
parent
add29e61d4
commit
9eb4b91e69
|
@ -18,10 +18,11 @@
|
|||
#include <linux/i2c.h>
|
||||
#include <linux/platform_device.h>
|
||||
#include <linux/gpio.h>
|
||||
|
||||
#include <linux/io.h>
|
||||
#include <linux/regulator/machine.h>
|
||||
#include <linux/mfd/tps6586x.h>
|
||||
|
||||
#include <mach/iomap.h>
|
||||
#include <mach/irqs.h>
|
||||
|
||||
#include "board-harmony.h"
|
||||
|
@ -113,6 +114,16 @@ static struct i2c_board_info __initdata harmony_regulators[] = {
|
|||
|
||||
int __init harmony_regulator_init(void)
|
||||
{
|
||||
void __iomem *pmc = IO_ADDRESS(TEGRA_PMC_BASE);
|
||||
u32 pmc_ctrl;
|
||||
|
||||
/*
|
||||
* Configure the power management controller to trigger PMU
|
||||
* interrupts when low
|
||||
*/
|
||||
pmc_ctrl = readl(pmc + PMC_CTRL);
|
||||
writel(pmc_ctrl | PMC_CTRL_INTR_LOW, pmc + PMC_CTRL);
|
||||
|
||||
i2c_register_board_info(3, harmony_regulators, 1);
|
||||
|
||||
return 0;
|
||||
|
|
Loading…
Reference in New Issue