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| author | Jon Hunter <jon-hunter@ti.com> | 2013-02-20 22:53:12 +0100 |
|---|---|---|
| committer | Jon Hunter <jon-hunter@ti.com> | 2013-04-01 21:53:45 +0200 |
| commit | 8c8a77712756edcef9298444868537af42334fc0 (patch) | |
| tree | 3be80581884b41e8925ea66644aea4dcfdd311f7 /Documentation | |
| parent | ARM: OMAP2+: Don't configure of chip-select options in gpmc_cs_configure() (diff) | |
| download | linux-8c8a77712756edcef9298444868537af42334fc0.tar.xz linux-8c8a77712756edcef9298444868537af42334fc0.zip | |
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')
| -rw-r--r-- | Documentation/devicetree/bindings/bus/ti-gpmc.txt | 23 |
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: |