On 9/8/2011 8:18 PM, Grant Likely wrote:
On Wed, Aug 24, 2011 at 03:09:16PM +0200, Benoit Cousson wrote:
Add documentation for GPIO properties specific to OMAP.
Signed-off-by: Benoit Cousson<b-cousson@xxxxxx>
Cc: Randy Dunlap<rdunlap@xxxxxxxxxxxx>
---
.../devicetree/bindings/gpio/gpio-omap.txt | 33 ++++++++++++++++++++
1 files changed, 33 insertions(+), 0 deletions(-)
create mode 100644 Documentation/devicetree/bindings/gpio/gpio-omap.txt
diff --git a/Documentation/devicetree/bindings/gpio/gpio-omap.txt b/Documentation/devicetree/bindings/gpio/gpio-omap.txt
new file mode 100644
index 0000000..692b1c7
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/gpio-omap.txt
@@ -0,0 +1,33 @@
+OMAP GPIO controller
+
+Required properties:
+- compatible:
+ - "ti,omap2-gpio" for OMAP2 and OMAP3 controllers
+ - "ti,omap4-gpio" for OMAP4 controller
+- #gpio-cells : Should be two.
+ - first cell is the pin number
+ - second cell is used to specify optional parameters (unused)
+- gpio-controller : Marks the device node as a GPIO controller.
+
+OMAP specific properties:
+- hwmods: Name of the hwmod associated to the GPIO
+- id: 32 bits to identify the id (1 based index)
id should not be necessary. Linux GPIO numbers are to be dynamically
assigned when using DT.
+- bank_width: number of pin supported by the controller (16 or 32)
+- debounce: set if the controller support the debouce funtionnality
+- bank_count: number of controller support by the SoC. This is a temporary
+ hack until the bank_count is removed from the driver.
All these properties should be prefixed with "ti,".
Use '-' instead of '_' in property names
I'll fix that.
Thanks,
Benoit
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