Commit 9f04ceeb authored Jul 30, 2015 by Kishon Vijay Abraham I Committed by Tony Lindgren Aug 05, 2015

ARM: dts: dra7-evm: Fix spurious card insert/removal interrupt



ldo1_reg in addition to being connected to the io lines is also
connected to the card detect line. On card removal, omap_hsmmc
driver does a regulator_disable causing card detect line to be
pulled down. This raises a card insertion interrupt and once the
MMC core detects there is no card inserted, it does a
regulator disable which again raises a card insertion interrupt.
This happens in a loop causing infinite MMC interrupts.

Fix it by making ldo1_reg as always_on.

Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>

parent 29d632c8

arch/arm/boot/dts/dra7-evm.dts

+1 −0

Original line number	Diff line number	Diff line
		@@ -358,6 +358,7 @@
		regulator-name = "ldo1";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <3300000>;
		regulator-always-on;
		regulator-boot-on;
		};