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Diffstat (limited to 'target/linux/lantiq/patches-3.6/0013-Document-devicetree-add-OF-documents-for-lantiq-falc.patch')
| -rw-r--r-- | target/linux/lantiq/patches-3.6/0013-Document-devicetree-add-OF-documents-for-lantiq-falc.patch | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.6/0013-Document-devicetree-add-OF-documents-for-lantiq-falc.patch b/target/linux/lantiq/patches-3.6/0013-Document-devicetree-add-OF-documents-for-lantiq-falc.patch new file mode 100644 index 0000000000..28fd21276c --- /dev/null +++ b/target/linux/lantiq/patches-3.6/0013-Document-devicetree-add-OF-documents-for-lantiq-falc.patch @@ -0,0 +1,108 @@ +From 8e004b47b7645fe8ebe1bb81f75cd8f16650de68 Mon Sep 17 00:00:00 2001 +From: John Crispin <blogic@openwrt.org> +Date: Sun, 22 Jul 2012 09:23:50 +0200 +Subject: [PATCH 13/15] Document: devicetree: add OF documents for lantiq + falcon pinctrl + +Signed-off-by: John Crispin <blogic@openwrt.org> +Signed-off-by: Thomas Langer <thomas.langer@lantiq.com> +Acked-by: Linus Walleij <linus.walleij@linaro.org> +Cc: devicetree-discuss@lists.ozlabs.org +Cc: linux-kernel@vger.kernel.org +--- + .../bindings/pinctrl/lantiq,falcon-pinumx.txt | 83 ++++++++++++++++++++ + 1 file changed, 83 insertions(+) + create mode 100644 Documentation/devicetree/bindings/pinctrl/lantiq,falcon-pinumx.txt + +diff --git a/Documentation/devicetree/bindings/pinctrl/lantiq,falcon-pinumx.txt b/Documentation/devicetree/bindings/pinctrl/lantiq,falcon-pinumx.txt +new file mode 100644 +index 0000000..daa7689 +--- /dev/null ++++ b/Documentation/devicetree/bindings/pinctrl/lantiq,falcon-pinumx.txt +@@ -0,0 +1,83 @@ ++Lantiq FALCON pinmux controller ++ ++Required properties: ++- compatible: "lantiq,pinctrl-falcon" ++- reg: Should contain the physical address and length of the gpio/pinmux ++ register range ++ ++Please refer to pinctrl-bindings.txt in this directory for details of the ++common pinctrl bindings used by client devices, including the meaning of the ++phrase "pin configuration node". ++ ++Lantiq's pin configuration nodes act as a container for an abitrary number of ++subnodes. Each of these subnodes represents some desired configuration for a ++pin, a group, or a list of pins or groups. This configuration can include the ++mux function to select on those group(s), and two pin configuration parameters: ++pull-up and open-drain ++ ++The name of each subnode is not important as long as it is unique; all subnodes ++should be enumerated and processed purely based on their content. ++ ++Each subnode only affects those parameters that are explicitly listed. In ++other words, a subnode that lists a mux function but no pin configuration ++parameters implies no information about any pin configuration parameters. ++Similarly, a pin subnode that describes a pullup parameter implies no ++information about e.g. the mux function. ++ ++We support 2 types of nodes. ++ ++Definition of mux function groups: ++ ++Required subnode-properties: ++- lantiq,groups : An array of strings. Each string contains the name of a group. ++ Valid values for these names are listed below. ++- lantiq,function: A string containing the name of the function to mux to the ++ group. Valid values for function names are listed below. ++ ++Valid values for group and function names: ++ ++ mux groups: ++ por, ntr, ntr8k, hrst, mdio, bootled, asc0, spi, spi cs0, spi cs1, i2c, ++ jtag, slic, pcm, asc1 ++ ++ functions: ++ rst, ntr, mdio, led, asc, spi, i2c, jtag, slic, pcm ++ ++ ++Definition of pin configurations: ++ ++Required subnode-properties: ++- lantiq,pins : An array of strings. Each string contains the name of a pin. ++ Valid values for these names are listed below. ++ ++Optional subnode-properties: ++- lantiq,pull: Integer, representing the pull-down/up to apply to the pin. ++ 0: none, 1: down ++- lantiq,drive-current: Boolean, enables drive-current ++- lantiq,slew-rate: Boolean, enables slew-rate ++ ++Example: ++ pinmux0 { ++ compatible = "lantiq,pinctrl-falcon"; ++ pinctrl-names = "default"; ++ pinctrl-0 = <&state_default>; ++ ++ state_default: pinmux { ++ asc0 { ++ lantiq,groups = "asc0"; ++ lantiq,function = "asc"; ++ }; ++ ntr { ++ lantiq,groups = "ntr8k"; ++ lantiq,function = "ntr"; ++ }; ++ i2c { ++ lantiq,groups = "i2c"; ++ lantiq,function = "i2c"; ++ }; ++ hrst { ++ lantiq,groups = "hrst"; ++ lantiq,function = "rst"; ++ }; ++ }; ++ }; +-- +1.7.10.4 + |