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authorAlexander Aring <alex.aring@gmail.com>2015-02-27 09:58:30 +0100
committerMarcel Holtmann <marcel@holtmann.org>2015-02-27 18:42:44 +0100
commitc91799c50a14137ecee6d60d2f1d9ab8bc895e52 (patch)
tree8d7482f4a8b309ae8df77f1bfe41999491927cb0 /Documentation
parent702d211c45d95e6788cec42f7f3c4a538e8853ef (diff)
at86rf230: add warning if edge-triggered irq
While testing I experience a deadlock while using the at86rf233 on a raspberry pi. The reason was an edge triggered gpio irq because the irq triggered while irq was disabled. This issue doesn't happend on a level triggered irq because the irq will hit after calling enable_irq. This patch adds a warning that it's not recommended to use a edge-triggered irq type. Also change the examples to high-level irqtype. Signed-off-by: Alexander Aring <alex.aring@gmail.com> Signed-off-by: Marcel Holtmann <marcel@holtmann.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/net/ieee802154/at86rf230.txt5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/devicetree/bindings/net/ieee802154/at86rf230.txt b/Documentation/devicetree/bindings/net/ieee802154/at86rf230.txt
index 1ae5100fea14..168f1be50912 100644
--- a/Documentation/devicetree/bindings/net/ieee802154/at86rf230.txt
+++ b/Documentation/devicetree/bindings/net/ieee802154/at86rf230.txt
@@ -6,7 +6,8 @@ Required properties:
- spi-max-frequency: maximal bus speed, should be set to 7500000 depends
sync or async operation mode
- reg: the chipselect index
- - interrupts: the interrupt generated by the device
+ - interrupts: the interrupt generated by the device. Non high-level
+ can occur deadlocks while handling isr.
Optional properties:
- reset-gpio: GPIO spec for the rstn pin
@@ -20,7 +21,7 @@ Example:
compatible = "atmel,at86rf231";
spi-max-frequency = <7500000>;
reg = <0>;
- interrupts = <19 1>;
+ interrupts = <19 4>;
interrupt-parent = <&gpio3>;
xtal-trim = /bits/ 8 <0x06>;
};