fix(llcc68): align spi binding with zephyr

Add a module-local .gitignore entry for macOS .DS_Store artifacts so generated Finder metadata does not dirty the submodule.

Declare the SPI chip-select delay binding properties as integers so Zephyr devicetree validation accepts the custom LLCC68 binding.

Pass the configured setup delay into SPI_DT_SPEC_INST_GET using the Zephyr 4 three-argument API, converting the nanosecond devicetree value to the microsecond spi_cs_control delay field.

.gitignore

@@ -0,0 +1 @@
+.DS_Store

drivers/llcc68/llcc68_raw.c

@@ -2,6 +2,7 @@
 
 #include <errno.h>
 #include <zephyr/devicetree.h>
+#include <zephyr/sys_clock.h>
 #include <zephyr/sys/util.h>
 
 #define DT_DRV_COMPAT semtech_llcc68_weihua
@@ -25,6 +26,9 @@
 #define LLCC68_RF_SWITCH_MODE(inst) \
 	DT_ENUM_IDX_OR(DT_DRV_INST(inst), rf_switch_mode, LLCC68_DEFAULT_RF_SWITCH_MODE(inst))
 
+#define LLCC68_SPI_CS_DELAY_US(inst) \
+	DIV_ROUND_UP(DT_INST_PROP(inst, spi_cs_setup_delay_ns), NSEC_PER_USEC)
+
 static void dio1_irq_trampoline(const struct device *port, struct gpio_callback *cb, uint32_t pins) {
 	ARG_UNUSED(port);
 
@@ -82,7 +86,8 @@ int llcc68_init(const struct device *dev) {
 	static struct llcc68_data llcc68_data_##inst;                                              \
 	static const struct llcc68_config llcc68_config_##inst =                                   \
 		{                                                                                      \
-			.spi            = SPI_DT_SPEC_INST_GET(inst, SPI_WORD_SET(8) | SPI_TRANSFER_MSB),      \
+			.spi = SPI_DT_SPEC_INST_GET(                                                       \
+				inst, SPI_WORD_SET(8) | SPI_TRANSFER_MSB, LLCC68_SPI_CS_DELAY_US(inst)),       \
 			.reset_gpio     = GPIO_DT_SPEC_INST_GET(inst, reset_gpios),                        \
 			.busy_gpio      = GPIO_DT_SPEC_INST_GET(inst, busy_gpios),                         \
 			.dio1_gpio      = GPIO_DT_SPEC_INST_GET(inst, dio1_gpios),                         \

dts/bindings/semtech,llcc68-weihua.yaml

@@ -71,7 +71,9 @@ properties:
       which the driver holds active. This mode must not use tx-enable-gpios.
 
   spi-cs-setup-delay-ns:
+    type: int
     default: 100000
 
   spi-cs-hold-delay-ns:
+    type: int
     default: 100000