[PATCH 6/7] ARM: dts: dra7-evm: Fix spurious card insert/removal interrupt
Kishon Vijay Abraham I
kishon at ti.com
Thu Jul 30 01:13:39 PDT 2015
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 at ti.com>
arch/arm/boot/dts/dra7-evm.dts | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/dra7-evm.dts b/arch/arm/boot/dts/dra7-evm.dts
index 25f0a00..a6c82e5 100644
@@ -358,6 +358,7 @@
regulator-name = "ldo1";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <3300000>;
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