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Zephyr API Documentation 4.4.99
A Scalable Open Source RTOS
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Zephyr API Documentation 4.4.99
A Scalable Open Source RTOS
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Topics | |
| FocalTech FT9001 clock identifiers | |
| Clock identifiers for FocalTech FT9001. | |
| NXP i.MX952 Clock Sources | |
| Root clock sources for i.MX952 SoC. | |
Macros | |
| #define | DT_CLOCKS_HAS_IDX(node_id, idx) |
| Test if a node has a clocks phandle-array property at a given index. | |
| #define | DT_CLOCKS_HAS_NAME(node_id, name) |
| Test if a node has a clock-names array property holds a given name. | |
| #define | DT_NUM_CLOCKS(node_id) |
| Get the number of elements in a clocks property. | |
| #define | DT_CLOCKS_CTLR_BY_IDX(node_id, idx) |
| Get the node identifier for the controller phandle from a "clocks" phandle-array property at an index. | |
| #define | DT_CLOCKS_CTLR(node_id) |
| Equivalent to DT_CLOCKS_CTLR_BY_IDX(node_id, 0). | |
| #define | DT_CLOCKS_CTLR_BY_NAME(node_id, name) |
| Get the node identifier for the controller phandle from a clocks phandle-array property by name. | |
| #define | DT_CLOCKS_CELL_BY_IDX(node_id, idx, cell) |
| Get a clock specifier's cell value at an index. | |
| #define | DT_CLOCKS_CELL_BY_NAME(node_id, name, cell) |
| Get a clock specifier's cell value by name. | |
| #define | DT_CLOCKS_CELL(node_id, cell) |
| Equivalent to DT_CLOCKS_CELL_BY_IDX(node_id, 0, cell). | |
| #define | DT_INST_CLOCKS_HAS_IDX(inst, idx) |
| Equivalent to DT_CLOCKS_HAS_IDX(DT_DRV_INST(inst), idx). | |
| #define | DT_INST_CLOCKS_HAS_NAME(inst, name) |
| Equivalent to DT_CLOCK_HAS_NAME(DT_DRV_INST(inst), name). | |
| #define | DT_INST_NUM_CLOCKS(inst) |
| Equivalent to DT_NUM_CLOCKS(DT_DRV_INST(inst)). | |
| #define | DT_INST_CLOCKS_CTLR_BY_IDX(inst, idx) |
| Get the node identifier for the controller phandle from a "clocks" phandle-array property at an index. | |
| #define | DT_INST_CLOCKS_CTLR(inst) |
| Equivalent to DT_INST_CLOCKS_CTLR_BY_IDX(inst, 0). | |
| #define | DT_INST_CLOCKS_CTLR_BY_NAME(inst, name) |
| Get the node identifier for the controller phandle from a clocks phandle-array property by name. | |
| #define | DT_INST_CLOCKS_CELL_BY_IDX(inst, idx, cell) |
| Get a DT_DRV_COMPAT instance's clock specifier's cell value at an index. | |
| #define | DT_INST_CLOCKS_CELL_BY_NAME(inst, name, cell) |
| Get a DT_DRV_COMPAT instance's clock specifier's cell value by name. | |
| #define | DT_INST_CLOCKS_CELL(inst, cell) |
| Equivalent to DT_INST_CLOCKS_CELL_BY_IDX(inst, 0, cell). | |
| #define DT_CLOCKS_CELL | ( | node_id, | |
| cell ) |
#include <zephyr/devicetree/clocks.h>
Equivalent to DT_CLOCKS_CELL_BY_IDX(node_id, 0, cell).
| node_id | node identifier for a node with a clocks property |
| cell | lowercase-and-underscores cell name |
| #define DT_CLOCKS_CELL_BY_IDX | ( | node_id, | |
| idx, | |||
| cell ) |
#include <zephyr/devicetree/clocks.h>
Get a clock specifier's cell value at an index.
Example devicetree fragment:
clk1: clock-controller@... {
compatible = "vnd,clock";
#clock-cells = <2>;
};
n: node {
clocks = <&clk1 10 20>, <&clk1 30 40>;
};
Bindings fragment for the vnd,clock compatible:
clock-cells: - bus - bits
Example usage:
DT_CLOCKS_CELL_BY_IDX(DT_NODELABEL(n), 0, bus) // 10 DT_CLOCKS_CELL_BY_IDX(DT_NODELABEL(n), 1, bits) // 40
| node_id | node identifier for a node with a clocks property |
| idx | logical index into clocks property |
| cell | lowercase-and-underscores cell name |
| #define DT_CLOCKS_CELL_BY_NAME | ( | node_id, | |
| name, | |||
| cell ) |
#include <zephyr/devicetree/clocks.h>
Get a clock specifier's cell value by name.
Example devicetree fragment:
clk1: clock-controller@... {
compatible = "vnd,clock";
#clock-cells = <2>;
};
n: node {
clocks = <&clk1 10 20>, <&clk1 30 40>;
clock-names = "alpha", "beta";
};
Bindings fragment for the vnd,clock compatible:
clock-cells: - bus - bits
Example usage:
DT_CLOCKS_CELL_BY_NAME(DT_NODELABEL(n), alpha, bus) // 10 DT_CLOCKS_CELL_BY_NAME(DT_NODELABEL(n), beta, bits) // 40
| node_id | node identifier for a node with a clocks property |
| name | lowercase-and-underscores name of a clocks element as defined by the node's clock-names property |
| cell | lowercase-and-underscores cell name |
| #define DT_CLOCKS_CTLR | ( | node_id | ) |
#include <zephyr/devicetree/clocks.h>
Equivalent to DT_CLOCKS_CTLR_BY_IDX(node_id, 0).
| node_id | node identifier |
| #define DT_CLOCKS_CTLR_BY_IDX | ( | node_id, | |
| idx ) |
#include <zephyr/devicetree/clocks.h>
Get the node identifier for the controller phandle from a "clocks" phandle-array property at an index.
Example devicetree fragment:
clk1: clock-controller@... { ... };
clk2: clock-controller@... { ... };
n: node {
clocks = <&clk1 10 20>, <&clk2 30 40>;
};
Example usage:
DT_CLOCKS_CTLR_BY_IDX(DT_NODELABEL(n), 0)) // DT_NODELABEL(clk1) DT_CLOCKS_CTLR_BY_IDX(DT_NODELABEL(n), 1)) // DT_NODELABEL(clk2)
| node_id | node identifier |
| idx | logical index into "clocks" |
| #define DT_CLOCKS_CTLR_BY_NAME | ( | node_id, | |
| name ) |
#include <zephyr/devicetree/clocks.h>
Get the node identifier for the controller phandle from a clocks phandle-array property by name.
Example devicetree fragment:
clk1: clock-controller@... { ... };
clk2: clock-controller@... { ... };
n: node {
clocks = <&clk1 10 20>, <&clk2 30 40>;
clock-names = "alpha", "beta";
};
Example usage:
DT_CLOCKS_CTLR_BY_NAME(DT_NODELABEL(n), beta) // DT_NODELABEL(clk2)
| node_id | node identifier |
| name | lowercase-and-underscores name of a clocks element as defined by the node's clock-names property |
| #define DT_CLOCKS_HAS_IDX | ( | node_id, | |
| idx ) |
#include <zephyr/devicetree/clocks.h>
Test if a node has a clocks phandle-array property at a given index.
This expands to 1 if the given index is valid clocks property phandle-array index. Otherwise, it expands to 0.
Example devicetree fragment:
n1: node-1 {
clocks = <...>, <...>;
};
n2: node-2 {
clocks = <...>;
};
Example usage:
DT_CLOCKS_HAS_IDX(DT_NODELABEL(n1), 0) // 1 DT_CLOCKS_HAS_IDX(DT_NODELABEL(n1), 1) // 1 DT_CLOCKS_HAS_IDX(DT_NODELABEL(n1), 2) // 0 DT_CLOCKS_HAS_IDX(DT_NODELABEL(n2), 1) // 0
| node_id | node identifier; may or may not have any clocks property |
| idx | index of a clocks property phandle-array whose existence to check |
| #define DT_CLOCKS_HAS_NAME | ( | node_id, | |
| name ) |
#include <zephyr/devicetree/clocks.h>
Test if a node has a clock-names array property holds a given name.
This expands to 1 if the name is available as clocks-name array property cell. Otherwise, it expands to 0.
Example devicetree fragment:
n1: node-1 {
clocks = <...>, <...>;
clock-names = "alpha", "beta";
};
n2: node-2 {
clocks = <...>;
clock-names = "alpha";
};
Example usage:
DT_CLOCKS_HAS_NAME(DT_NODELABEL(n1), alpha) // 1 DT_CLOCKS_HAS_NAME(DT_NODELABEL(n1), beta) // 1 DT_CLOCKS_HAS_NAME(DT_NODELABEL(n2), beta) // 0
| node_id | node identifier; may or may not have any clock-names property. |
| name | lowercase-and-underscores clock-names cell value name to check |
| #define DT_INST_CLOCKS_CELL | ( | inst, | |
| cell ) |
#include <zephyr/devicetree/clocks.h>
Equivalent to DT_INST_CLOCKS_CELL_BY_IDX(inst, 0, cell).
| inst | DT_DRV_COMPAT instance number |
| cell | lowercase-and-underscores cell name |
| #define DT_INST_CLOCKS_CELL_BY_IDX | ( | inst, | |
| idx, | |||
| cell ) |
#include <zephyr/devicetree/clocks.h>
Get a DT_DRV_COMPAT instance's clock specifier's cell value at an index.
| inst | DT_DRV_COMPAT instance number |
| idx | logical index into clocks property |
| cell | lowercase-and-underscores cell name |
| #define DT_INST_CLOCKS_CELL_BY_NAME | ( | inst, | |
| name, | |||
| cell ) |
#include <zephyr/devicetree/clocks.h>
Get a DT_DRV_COMPAT instance's clock specifier's cell value by name.
| inst | DT_DRV_COMPAT instance number |
| name | lowercase-and-underscores name of a clocks element as defined by the node's clock-names property |
| cell | lowercase-and-underscores cell name |
| #define DT_INST_CLOCKS_CTLR | ( | inst | ) |
#include <zephyr/devicetree/clocks.h>
Equivalent to DT_INST_CLOCKS_CTLR_BY_IDX(inst, 0).
| inst | instance number |
| #define DT_INST_CLOCKS_CTLR_BY_IDX | ( | inst, | |
| idx ) |
#include <zephyr/devicetree/clocks.h>
Get the node identifier for the controller phandle from a "clocks" phandle-array property at an index.
| inst | instance number |
| idx | logical index into "clocks" |
| #define DT_INST_CLOCKS_CTLR_BY_NAME | ( | inst, | |
| name ) |
#include <zephyr/devicetree/clocks.h>
Get the node identifier for the controller phandle from a clocks phandle-array property by name.
| inst | instance number |
| name | lowercase-and-underscores name of a clocks element as defined by the node's clock-names property |
| #define DT_INST_CLOCKS_HAS_IDX | ( | inst, | |
| idx ) |
#include <zephyr/devicetree/clocks.h>
Equivalent to DT_CLOCKS_HAS_IDX(DT_DRV_INST(inst), idx).
| inst | DT_DRV_COMPAT instance number; may or may not have any clocks property |
| idx | index of a clocks property phandle-array whose existence to check |
| #define DT_INST_CLOCKS_HAS_NAME | ( | inst, | |
| name ) |
#include <zephyr/devicetree/clocks.h>
Equivalent to DT_CLOCK_HAS_NAME(DT_DRV_INST(inst), name).
| inst | DT_DRV_COMPAT instance number; may or may not have any clock-names property. |
| name | lowercase-and-underscores clock-names cell value name to check |
| #define DT_INST_NUM_CLOCKS | ( | inst | ) |
#include <zephyr/devicetree/clocks.h>
Equivalent to DT_NUM_CLOCKS(DT_DRV_INST(inst)).
| inst | instance number |
| #define DT_NUM_CLOCKS | ( | node_id | ) |
#include <zephyr/devicetree/clocks.h>
Get the number of elements in a clocks property.
Example devicetree fragment:
n1: node-1 {
clocks = <&foo>, <&bar>;
};
n2: node-2 {
clocks = <&foo>;
};
Example usage:
DT_NUM_CLOCKS(DT_NODELABEL(n1)) // 2 DT_NUM_CLOCKS(DT_NODELABEL(n2)) // 1
| node_id | node identifier with a clocks property |
1.16.1