From: maxime.ripard@bootlin.com (Maxime Ripard)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 1/1] mmc: sunxi: Disable irq during pm_suspend
Date: Wed, 4 Jul 2018 09:44:35 +0200 [thread overview]
Message-ID: <20180704074435.46aqhuthrn2vok5x@flea> (raw)
In-Reply-To: <1530685741-20604-1-git-send-email-stefan@olimex.com>
On Wed, Jul 04, 2018 at 09:28:59AM +0300, Stefan Mavrodiev wrote:
> When mmc host controller enters suspend state, the clocks are
> disabled, but irqs are not. For some reason the irqchip emits
> false interrupts, which causes system lock loop.
>
> Debug log is:
> ...
> sunxi-mmc 1c11000.mmc: setting clk to 52000000, rounded 51200000
> sunxi-mmc 1c11000.mmc: enabling the clock
> sunxi-mmc 1c11000.mmc: cmd 13(8000014d) arg 10000 ie 0x0000bbc6 len 0
> sunxi-mmc 1c11000.mmc: irq: rq (ptrval) mi 00000004 idi 00000000
> sunxi-mmc 1c11000.mmc: cmd 6(80000146) arg 3210101 ie 0x0000bbc6 len 0
> sunxi-mmc 1c11000.mmc: irq: rq (ptrval) mi 00000004 idi 00000000
> sunxi-mmc 1c11000.mmc: cmd 13(8000014d) arg 10000 ie 0x0000bbc6 len 0
> sunxi-mmc 1c11000.mmc: irq: rq (ptrval) mi 00000004 idi 00000000
> mmc1: new DDR MMC card at address 0001
> mmcblk1: mmc1:0001 AGND3R 14.6 GiB
> mmcblk1boot0: mmc1:0001 AGND3R partition 1 4.00 MiB
> mmcblk1boot1: mmc1:0001 AGND3R partition 2 4.00 MiB
> sunxi-mmc 1c11000.mmc: cmd 18(80003352) arg 0 ie 0x0000fbc2 len 409
> sunxi-mmc 1c11000.mmc: irq: rq (ptrval) mi 00004000 idi 00000002
> mmcblk1: p1
> sunxi-mmc 1c11000.mmc: irq: rq (null) mi 00000000 idi 00000000
> sunxi-mmc 1c11000.mmc: irq: rq (null) mi 00000000 idi 00000000
> sunxi-mmc 1c11000.mmc: irq: rq (null) mi 00000000 idi 00000000
> sunxi-mmc 1c11000.mmc: irq: rq (null) mi 00000000 idi 00000000
> and so on...
>
> This issue apears on eMMC cards, routed on MMC2 slot. The patch is
> tested with A20-OLinuXino-MICRO/LIME/LIME2 boards.
>
> Fixes: 9a8e1e8cc2c0 ("mmc: sunxi: Add runtime_pm support")
> Signed-off-by: Stefan Mavrodiev <stefan@olimex.com>
Acked-by: Maxime Ripard <maxime.ripard@bootlin.com>
Thanks!
Maxime
--
Maxime Ripard, Bootlin (formerly Free Electrons)
Embedded Linux and Kernel engineering
https://bootlin.com
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next prev parent reply other threads:[~2018-07-04 7:44 UTC|newest]
Thread overview: 14+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-07-04 6:28 [PATCH v2 1/1] mmc: sunxi: Disable irq during pm_suspend Stefan Mavrodiev
2018-07-04 7:44 ` Maxime Ripard [this message]
2018-07-04 10:50 ` Ulf Hansson
2018-07-04 11:34 ` Marc Zyngier
2018-07-04 11:48 ` Maxime Ripard
2018-07-04 13:34 ` Ulf Hansson
2018-07-04 13:45 ` Marc Zyngier
2018-07-04 15:29 ` Maxime Ripard
2018-07-04 20:29 ` Marc Zyngier
2018-07-05 11:12 ` Ulf Hansson
2018-07-05 11:40 ` Marc Zyngier
2018-07-05 12:07 ` Ulf Hansson
2018-07-05 13:56 ` Marc Zyngier
2018-07-05 15:45 ` Ulf Hansson
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