path: root/Documentation/devicetree/bindings/bus
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authorJon Hunter <jon-hunter@ti.com>2013-02-20 15:53:12 -0600
committerJon Hunter <jon-hunter@ti.com>2013-04-01 14:53:45 -0500
commit8c8a77712756edcef9298444868537af42334fc0 (patch)
tree3be80581884b41e8925ea66644aea4dcfdd311f7 /Documentation/devicetree/bindings/bus
parent3a544354d5b6e97459ba9c15e9d89dac60023553 (diff)
ARM: OMAP2+: Add function to read GPMC settings from device-tree
Adds a function to read the various GPMC chip-select settings from device-tree and store them in the gpmc_settings structure. Update the GPMC device-tree binding documentation to describe these options. Signed-off-by: Jon Hunter <jon-hunter@ti.com> Tested-by: Ezequiel Garcia <ezequiel.garcia@free-electrons.com>
Diffstat (limited to 'Documentation/devicetree/bindings/bus')
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/bus/ti-gpmc.txt b/Documentation/devicetree/bindings/bus/ti-gpmc.txt
index 5ddb2e9efaaa..6fde1cfe51f8 100644
--- a/Documentation/devicetree/bindings/bus/ti-gpmc.txt
+++ b/Documentation/devicetree/bindings/bus/ti-gpmc.txt
@@ -65,6 +65,29 @@ The following are only applicable to OMAP3+ and AM335x:
- gpmc,wr-access
- gpmc,wr-data-mux-bus
+GPMC chip-select settings properties for child nodes. All are optional.
+- gpmc,burst-length Page/burst length. Must be 4, 8 or 16.
+- gpmc,burst-wrap Enables wrap bursting
+- gpmc,burst-read Enables read page/burst mode
+- gpmc,burst-write Enables write page/burst mode
+- gpmc,device-nand Device is NAND
+- gpmc,device-width Total width of device(s) connected to a GPMC
+ chip-select in bytes. The GPMC supports 8-bit
+ and 16-bit devices and so this property must be
+ 1 or 2.
+- gpmc,mux-add-data Address and data multiplexing configuration.
+ Valid values are 1 for address-address-data
+ multiplexing mode and 2 for address-data
+ multiplexing mode.
+- gpmc,sync-read Enables synchronous read. Defaults to asynchronous
+ is this is not set.
+- gpmc,sync-write Enables synchronous writes. Defaults to asynchronous
+ is this is not set.
+- gpmc,wait-pin Wait-pin used by client. Must be less than
+ "gpmc,num-waitpins".
+- gpmc,wait-on-read Enables wait monitoring on reads.
+- gpmc,wait-on-write Enables wait monitoring on writes.
Example for an AM33xx board:

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