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Commit ada1de89 authored by Linus Walleij's avatar Linus Walleij Committed by Sebastian Reichel
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power: gemini-poweroff: Avoid more spurious poweroffs 



Even after the previous fix I have experienced more spurious
poweroffs on the gemini SoC. After this fix it finally seems
to go away.

Fixes: f7a388d6 ("power: reset: Add a driver for the Gemini poweroff")
Signed-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Signed-off-by: default avatarSebastian Reichel <sebastian.reichel@collabora.co.uk>
parent 09bebb1a

drivers/power/reset/gemini-poweroff.c

+11 −1
Original line number Diff line number Diff line
@@ -130,7 +130,17 @@ static int gemini_poweroff_probe(struct platform_device *pdev) 
	val |= GEMINI_CTRL_ENABLE;

	writel(val, gpw->base + GEMINI_PWC_CTRLREG);



	/* Now that the state machine is active, clear the IRQ */

	/* Clear the IRQ */

	val = readl(gpw->base + GEMINI_PWC_CTRLREG);

	val |= GEMINI_CTRL_IRQ_CLR;

	writel(val, gpw->base + GEMINI_PWC_CTRLREG);



	/* Wait for this to clear */

	val = readl(gpw->base + GEMINI_PWC_STATREG);

	while (val & 0x70U)

		val = readl(gpw->base + GEMINI_PWC_STATREG);



	/* Clear the IRQ again */

	val = readl(gpw->base + GEMINI_PWC_CTRLREG);

	val |= GEMINI_CTRL_IRQ_CLR;

	writel(val, gpw->base + GEMINI_PWC_CTRLREG);