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drivers: cc13xx_cc26xx: pinctrl: support edge detection

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Introduces support for SoC-specific input-edge-detect configuration to
the CC13/26xx pinctrl driver.

Signed-off-by: Florian Grandel <fgrandel@code-for-humans.de>
This commit is contained in:
Florian Grandel 2023-07-25 12:49:08 +02:00 committed by Carles Cufí
parent 0dcbb22265
commit d34709121f
3 changed files with 30 additions and 1 deletions
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22
dts/bindings/pinctrl/ti,cc13xx-cc26xx-pinctrl.yaml
View file

@ -29,6 +29,7 @@ description: |
- drive-strength: Minimum current that can be sourced from the pin.
- input-enable: enable input.
- input-schmitt-enable: enable input schmitt circuit.
- ti,input-edge-detect: enable and configure edge detection interrupts
An example for CC13XX family, include the chip level pinctrl
DTSI file in the board level DTS:
@ -58,6 +59,17 @@ description: |
};
};
To configure an input pin with edge detection (e.g. to count pulses):
&pinctrl {
gpt0_edge_counter: gpt0_edge_counter {
pinmux = <15 IOC_PORT_MCU_PORT_EVENT0>;
input-enable;
bias-pull-up;
ti,input-edge-detect = <IOC_RISING_EDGE>;
};
};
To configure an output pin (e.g. for PWM output):
&pinctrl {
@ -112,3 +124,13 @@ child-binding:
2: min 2 mA (SoC default)
4: min 4 mA
8: min 8 mA for for double drive strength IOs, min 4 mA for normal IOs
ti,input-edge-detect:
type: int
default: 0 # no edge detection
description: |
Enables or disables the edge detection interrupt and configures it:
IOC_NO_EDGE: No edge detection (SoC default)
IOC_FALLING_EDGE: Edge detection on falling edge
IOC_RISING_EDGE: Edge detection on rising edge
IOC_BOTH_EDGES: Edge detection on both edges

6
include/zephyr/dt-bindings/pinctrl/cc13xx_cc26xx-pinctrl.h
View file

@ -57,4 +57,10 @@
#define IOC_PORT_RFC_SMI_CL_OUT 0x00000037 /* RF Core SMI Command Link Out */
#define IOC_PORT_RFC_SMI_CL_IN 0x00000038 /* RF Core SMI Command Link In */
/* Edge Detection */
#define IOC_NO_EDGE 0x00000000 /* No edge detection */
#define IOC_FALLING_EDGE 0x00010000 /* Edge detection on falling edge */
#define IOC_RISING_EDGE 0x00020000 /* Edge detection on rising edge */
#define IOC_BOTH_EDGES 0x00030000 /* Edge detection on both edges */
#endif /* CC13XX_CC26XX_PINCTRL_COMMON_H_ */

3
soc/arm/ti_simplelink/cc13x2_cc26x2/pinctrl_soc.h
View file

@ -26,7 +26,8 @@ typedef struct pinctrl_soc_pin {
DT_PROP(node_id, drive_open_source) * IOC_IOMODE_OPEN_SRC_NORMAL | \
(DT_PROP(node_id, drive_strength) >> 2) << IOC_IOCFG0_IOCURR_S | \
DT_PROP(node_id, input_enable) * IOC_INPUT_ENABLE | \
DT_PROP(node_id, input_schmitt_enable) * IOC_HYST_ENABLE)
DT_PROP(node_id, input_schmitt_enable) * IOC_HYST_ENABLE | \
DT_PROP(node_id, ti_input_edge_detect))
#define CC13XX_CC26XX_DT_PIN(node_id) \
{ \