Stephen Warren wrote at Wednesday, September 21, 2011 4:11 PM:
> 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 <[email protected]> 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?
Olof, is this change OK for inclusion? Or, should we create some kind
of PMU driver and interrupt controller to solve this?
Thanks.
> 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;
--
nvpublic
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