[nrf fromlist] drivers: pinctrl: nrf: Add support for clock outputs

Add support for GRTC clock output pins.

Upstream PR #: 82788

Signed-off-by: Adam Kondraciuk <[email protected]>

Author: adamkondraciuk

drivers/pinctrl/pinctrl_nrf.c

@@ -94,6 +94,15 @@ static const nrf_gpio_pin_drive_t drive_modes[NRF_DRIVE_COUNT] = {
 #define NRF_PSEL_QSPI(reg, line) ((NRF_QSPI_Type *)reg)->PSEL.line
 #endif
 
+#if DT_HAS_COMPAT_STATUS_OKAY(nordic_nrf_grtc) || defined(CONFIG_NRFX_GRTC)
+#if DT_NODE_HAS_PROP(DT_NODELABEL(grtc), clkout_fast_frequency)
+#define NRF_GRTC_CLKOUT_FAST 1
+#endif
+#if DT_NODE_HAS_PROP(DT_NODELABEL(grtc), clkout_32k_frequency)
+#define NRF_GRTC_CLKOUT_SLOW 1
+#endif
+#endif
+
 int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
 			   uintptr_t reg)
 {
@@ -336,6 +345,24 @@ int pinctrl_configure_pins(const pinctrl_soc_pin_t *pins, uint8_t pin_cnt,
 			input = NRF_GPIO_PIN_INPUT_DISCONNECT;
 			break;
 #endif /* defined(NRF_PSEL_QSPI) */
+#if defined(NRF_GRTC_CLKOUT_FAST)
+		case NRF_FUN_GRTC_CLKOUT_FAST:
+#if NRF_GPIO_HAS_SEL && defined(GPIO_PIN_CNF_CTRLSEL_GRTC)
+			nrf_gpio_pin_control_select(psel, NRF_GPIO_PIN_SEL_GRTC);
+#endif
+			dir = NRF_GPIO_PIN_DIR_OUTPUT;
+			input = NRF_GPIO_PIN_INPUT_DISCONNECT;
+			break;
+#endif /* defined(NRF_GRTC_CLKOUT_FAST) */
+#if defined(NRF_GRTC_CLKOUT_SLOW)
+		case NRF_FUN_GRTC_CLKOUT_32K:
+#if NRF_GPIO_HAS_SEL && defined(GPIO_PIN_CNF_CTRLSEL_GRTC)
+			nrf_gpio_pin_control_select(psel, NRF_GPIO_PIN_SEL_GRTC);
+#endif
+			dir = NRF_GPIO_PIN_DIR_OUTPUT;
+			input = NRF_GPIO_PIN_INPUT_DISCONNECT;
+			break;
+#endif /* defined(NRF_GRTC_CLKOUT_SLOW) */
 #if DT_HAS_COMPAT_STATUS_OKAY(nordic_nrf_can)
 		/* Pin routing is controlled by secure domain, via UICR */
 		case NRF_FUN_CAN_TX:

include/zephyr/dt-bindings/pinctrl/nrf-pinctrl.h

@@ -162,6 +162,10 @@
 #define NRF_FUN_CAN_TX 46U
 /** CAN RX */
 #define NRF_FUN_CAN_RX 47U
+/** GRTC fast clock output */
+#define NRF_FUN_GRTC_CLKOUT_FAST 55U
+/** GRTC slow clock output */
+#define NRF_FUN_GRTC_CLKOUT_32K 56U
 
 /** @} */