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-rw-r--r--target/linux/lantiq/patches-3.6/0012-Document-devicetree-add-OF-documents-for-lantiq-xway.patch121
1 files changed, 121 insertions, 0 deletions
diff --git a/target/linux/lantiq/patches-3.6/0012-Document-devicetree-add-OF-documents-for-lantiq-xway.patch b/target/linux/lantiq/patches-3.6/0012-Document-devicetree-add-OF-documents-for-lantiq-xway.patch
new file mode 100644
index 0000000000..84f930fa8a
--- /dev/null
+++ b/target/linux/lantiq/patches-3.6/0012-Document-devicetree-add-OF-documents-for-lantiq-xway.patch
@@ -0,0 +1,121 @@
+From 5c56f76995691cf761f66d6d89a00eea80be660c Mon Sep 17 00:00:00 2001
+From: John Crispin <blogic@openwrt.org>
+Date: Fri, 20 Jul 2012 19:01:00 +0200
+Subject: [PATCH 12/15] Document: devicetree: add OF documents for lantiq xway
+ pinctrl
+
+Signed-off-by: John Crispin <blogic@openwrt.org>
+Acked-by: Linus Walleij <linus.walleij@linaro.org>
+Cc: devicetree-discuss@lists.ozlabs.org
+Cc: linux-kernel@vger.kernel.org
+---
+ .../bindings/pinctrl/lantiq,xway-pinumx.txt | 97 ++++++++++++++++++++
+ 1 file changed, 97 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/pinctrl/lantiq,xway-pinumx.txt
+
+diff --git a/Documentation/devicetree/bindings/pinctrl/lantiq,xway-pinumx.txt b/Documentation/devicetree/bindings/pinctrl/lantiq,xway-pinumx.txt
+new file mode 100644
+index 0000000..b5469db
+--- /dev/null
++++ b/Documentation/devicetree/bindings/pinctrl/lantiq,xway-pinumx.txt
+@@ -0,0 +1,97 @@
++Lantiq XWAY pinmux controller
++
++Required properties:
++- compatible: "lantiq,pinctrl-xway" or "lantiq,pinctrl-xr9"
++- 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:
++ exin0, exin1, exin2, jtag, ebu a23, ebu a24, ebu a25, ebu clk, ebu cs1,
++ ebu wait, nand ale, nand cs1, nand cle, spi, spi_cs1, spi_cs2, spi_cs3,
++ spi_cs4, spi_cs5, spi_cs6, asc0, asc0 cts rts, stp, nmi , gpt1, gpt2,
++ gpt3, clkout0, clkout1, clkout2, clkout3, gnt1, gnt2, gnt3, req1, req2,
++ req3
++
++ additional mux groups (XR9 only):
++ mdio, nand rdy, nand rd, exin3, exin4, gnt4, req4
++
++ functions:
++ spi, asc, cgu, jtag, exin, stp, gpt, nmi, pci, ebu, mdio
++
++
++
++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, 2: up.
++- lantiq,open-drain: Boolean, enables open-drain on the defined pin.
++
++Valid values for XWAY pin names:
++ Pinconf pins can be referenced via the names io0-io31.
++
++Valid values for XR9 pin names:
++ Pinconf pins can be referenced via the names io0-io55.
++
++Example:
++ gpio: pinmux@E100B10 {
++ compatible = "lantiq,pinctrl-xway";
++ pinctrl-names = "default";
++ pinctrl-0 = <&state_default>;
++
++ #gpio-cells = <2>;
++ gpio-controller;
++ reg = <0xE100B10 0xA0>;
++
++ state_default: pinmux {
++ stp {
++ lantiq,groups = "stp";
++ lantiq,function = "stp";
++ };
++ pci {
++ lantiq,groups = "gnt1";
++ lantiq,function = "pci";
++ };
++ conf_out {
++ lantiq,pins = "io4", "io5", "io6"; /* stp */
++ lantiq,open-drain;
++ lantiq,pull = <0>;
++ };
++ };
++ };
++
+--
+1.7.10.4
+