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| author | Alexander Aring <alex.aring@gmail.com> | 2015-02-27 11:58:30 +0300 |
|---|---|---|
| committer | Marcel Holtmann <marcel@holtmann.org> | 2015-02-27 20:42:44 +0300 |
| commit | c91799c50a14137ecee6d60d2f1d9ab8bc895e52 (patch) | |
| tree | 8d7482f4a8b309ae8df77f1bfe41999491927cb0 /Documentation | |
| parent | 702d211c45d95e6788cec42f7f3c4a538e8853ef (diff) | |
| download | linux-c91799c50a14137ecee6d60d2f1d9ab8bc895e52.tar.xz | |
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.txt | 5 |
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>; }; |