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-CSR SiRFatlas7 pinmux controller
-
-Required properties:
-- compatible : "sirf,atlas7-ioc"
-- reg : Address range of the pinctrl registers
-
-For example, pinctrl might have properties like the following:
- pinctrl: ioc@18880000 {
- compatible = "sirf,atlas7-ioc";
- reg = <0x18880000 0x1000>;
-
- a_ac97_pmx: ac97@0 {
- ac97 {
- groups = "audio_ac97_grp";
- function = "audio_ac97";
- };
- };
-
- ...
-
- sd2_pmx: sd2@0 {
- sd2 {
- groups = "sd2_grp0";
- function = "sd2";
- };
- };
-
- ...
-
-
- sample0_cfg: sample0@0 {
- sample0 {
- pins = "ldd_0", "ldd_1";
- bias-pull-up;
- };
- };
-
- sample1_cfg: sample1@0 {
- sample1 {
- pins = "ldd_2", "ldd_3";
- input-schmitt-enable;
- };
- };
-
- sample2_cfg: sample2@0 {
- sample2 {
- groups = "uart4_nopause_grp";
- bias-pull-down;
- };
- };
-
- sample3_cfg: sample3@0 {
- sample3 {
- pins = "ldd_4", "ldd_5";
- drive-strength = <2>;
- };
- };
- };
-
-Please refer to pinctrl-bindings.txt in this directory for details of the common
-pinctrl bindings used by client devices.
-
-SiRFatlas7's pinmux nodes act as a container for an arbitrary number of subnodes.
-Each of these subnodes represents some desired configuration for a group of pins.
-
-Required subnode-properties:
-- groups : An array of strings. Each string contains the name of a group.
-- function: A string containing the name of the function to mux to the
- group.
-
- Valid values for group and function names can be found from looking at the
- group and function arrays in driver files:
- drivers/pinctrl/pinctrl-sirf.c
-
-For example, pinctrl might have subnodes like the following:
- sd0_pmx: sd0@0 {
- sd0 {
- groups = "sd0_grp";
- function = "sd0";
- };
- };
-
- sd1_pmx0: sd1@0 {
- sd1 {
- groups = "sd1_grp0";
- function = "sd1_m0";
- };
- };
-
- sd1_pmx1: sd1@1 {
- sd1 {
- groups = "sd1_grp1";
- function = "sd1_m1";
- };
- };
-
-For a specific board, if it wants to use sd1,
-it can add the following to its board-specific .dts file.
-sd1: sd@12340000 {
- pinctrl-names = "default";
- pinctrl-0 = <&sd1_pmx0>;
-}
-
-or
-
-sd1: sd@12340000 {
- pinctrl-names = "default";
- pinctrl-0 = <&sd1_pmx1>;
-}