zephyrproject-rtos · nashif · Nov 16, 2024 · Nov 1, 2023 · Mar 18, 2024 · Nov 1, 2023
diff --git a/boards/adi/max32655evkit/max32655evkit_max32655_m4.dts b/boards/adi/max32655evkit/max32655evkit_max32655_m4.dts
@@ -78,6 +78,13 @@
 	status = "okay";
 };
 
+/*
+ * ERTCO is required for counter RTC
+ */
+&clk_ertco {
+	status = "okay";
+};
+
 &gpio0 {
 	status = "okay";
 };
@@ -122,3 +129,7 @@
 	pinctrl-0 = <&owm_io_p0_6 &owm_pe_p0_7>;
 	pinctrl-names = "default";
 };
+
+&rtc_counter {
+	status = "okay";
+};
diff --git a/boards/adi/max32655evkit/max32655evkit_max32655_m4.yaml b/boards/adi/max32655evkit/max32655evkit_max32655_m4.yaml
@@ -17,6 +17,7 @@ supported:
   - spi
   - adc
   - counter
+  - rtc_counter
   - pwm
   - w1
   - flash

diff --git a/boards/adi/max32655fthr/max32655fthr_max32655_m4.dts b/boards/adi/max32655fthr/max32655fthr_max32655_m4.dts
@@ -112,6 +112,13 @@
 	status = "okay";
 };
 
+/*
+ * ERTCO is required for counter RTC
+ */
+&clk_ertco {
+	status = "okay";
+};
+
 &gpio0 {
 	status = "okay";
 };
@@ -151,3 +158,7 @@
 	pinctrl-0 = <&spi1_mosi_p0_21 &spi1_miso_p0_22 &spi1_sck_p0_23 &spi1_ss0_p0_20>;
 	pinctrl-names = "default";
 };
+
+&rtc_counter {
+	status = "okay";
+};
diff --git a/boards/adi/max32655fthr/max32655fthr_max32655_m4.yaml b/boards/adi/max32655fthr/max32655fthr_max32655_m4.yaml
@@ -17,6 +17,7 @@ supported:
   - spi
   - adc
   - counter
+  - rtc_counter
   - pwm
   - flash
 ram: 128

diff --git a/boards/adi/max32662evkit/max32662evkit.dts b/boards/adi/max32662evkit/max32662evkit.dts
@@ -102,6 +102,13 @@
 	status = "okay";
 };
 
+/*
+ * ERTCO is required for counter RTC
+ */
+&clk_ertco {
+	status = "okay";
+};
+
 &gpio0 {
 	status = "okay";
 };
@@ -120,6 +127,10 @@
 	status = "okay";
 };
 
+&rtc_counter {
+	status = "okay";
+};
+
 &spi0 {
 	status = "okay";
 	pinctrl-0 = <&spi0a_copi_p0_3 &spi0a_cito_p0_2 &spi0a_sck_p0_4 &spi0a_ts0_p0_5>;

diff --git a/boards/adi/max32662evkit/max32662evkit.yaml b/boards/adi/max32662evkit/max32662evkit.yaml
@@ -17,6 +17,7 @@ supported:
   - spi
   - adc
   - counter
+  - rtc_counter
   - pwm
   - flash
 ram: 80

diff --git a/boards/adi/max32666evkit/max32666evkit_max32666_cpu0.dts b/boards/adi/max32666evkit/max32666evkit_max32666_cpu0.dts
@@ -110,3 +110,7 @@
 	pinctrl-0 = <&owm_io_p0_4 &owm_pe_p0_5>;
 	pinctrl-names = "default";
 };
+
+&rtc_counter {
+	status = "okay";
+};
diff --git a/boards/adi/max32666evkit/max32666evkit_max32666_cpu0.yaml b/boards/adi/max32666evkit/max32666evkit_max32666_cpu0.yaml
@@ -16,6 +16,7 @@ supported:
   - watchdog
   - adc
   - counter
+  - rtc_counter
   - pwm
   - w1
   - flash

diff --git a/boards/adi/max32666fthr/max32666fthr_max32666_cpu0.dts b/boards/adi/max32666fthr/max32666fthr_max32666_cpu0.dts
@@ -120,6 +120,10 @@
 	status = "okay";
 };
 
+&rtc_counter {
+	status = "okay";
+};
+
 &spi1 {
 	status = "okay";
 	pinctrl-0 = <&spi1_mosi_p0_17 &spi1_miso_p0_18 &spi1_sck_p0_19 &spi1_ss0_p0_16>;

diff --git a/boards/adi/max32666fthr/max32666fthr_max32666_cpu0.yaml b/boards/adi/max32666fthr/max32666fthr_max32666_cpu0.yaml
@@ -17,6 +17,7 @@ supported:
   - spi
   - adc
   - counter
+  - rtc_counter
   - pwm
   - w1
   - flash

diff --git a/boards/adi/max32670evkit/max32670evkit.dts b/boards/adi/max32670evkit/max32670evkit.dts
@@ -65,6 +65,13 @@
 	status = "okay";
 };
 
+/*
+ * ERTCO is required for counter RTC
+ */
+&clk_ertco {
+	status = "okay";
+};
+
 &gpio0 {
 	status = "okay";
 };
@@ -96,3 +103,7 @@
 	pinctrl-0 = <&spi0_mosi_p0_3 &spi0_miso_p0_2 &spi0_sck_p0_4 &spi0_ss0_p0_5>;
 	pinctrl-names = "default";
 };
+
+&rtc_counter {
+	status = "okay";
+};
diff --git a/boards/adi/max32670evkit/max32670evkit.yaml b/boards/adi/max32670evkit/max32670evkit.yaml
@@ -16,6 +16,7 @@ supported:
   - watchdog
   - spi
   - counter
+  - rtc_counter
   - pwm
   - flash
 ram: 160

diff --git a/boards/adi/max32672evkit/max32672evkit.dts b/boards/adi/max32672evkit/max32672evkit.dts
@@ -103,6 +103,13 @@
 	status = "okay";
 };
 
+/*
+ * ERTCO is required for counter RTC
+ */
+&clk_ertco {
+	status = "okay";
+};
+
 &gpio0 {
 	status = "okay";
 };
@@ -149,3 +156,7 @@
 	pinctrl-names = "default";
 	cs-gpios = <&gpio0 5 (GPIO_ACTIVE_LOW | MAX32_VSEL_VDDIOH)>;
 };
+
+&rtc_counter {
+	status = "okay";
+};
diff --git a/boards/adi/max32672evkit/max32672evkit.yaml b/boards/adi/max32672evkit/max32672evkit.yaml
@@ -17,6 +17,7 @@ supported:
   - spi
   - adc
   - counter
+  - rtc_counter
   - pwm
   - flash
 ram: 200

diff --git a/boards/adi/max32672fthr/max32672fthr.dts b/boards/adi/max32672fthr/max32672fthr.dts
@@ -100,6 +100,13 @@
 	status = "okay";
 };
 
+/*
+ * ERTCO is required for counter RTC
+ */
+&clk_ertco {
+	status = "okay";
+};
+
 &gpio0 {
 	status = "okay";
 };
@@ -148,3 +155,7 @@
 	pinctrl-0 = <&spi1a_mosi_p0_15 &spi1a_miso_p0_14 &spi1a_sck_p0_16 &spi1a_ss0_p0_17>;
 	pinctrl-names = "default";
 };
+
+&rtc_counter {
+	status = "okay";
+};
diff --git a/boards/adi/max32672fthr/max32672fthr.yaml b/boards/adi/max32672fthr/max32672fthr.yaml
@@ -17,6 +17,7 @@ supported:
   - spi
   - adc
   - counter
+  - rtc_counter
   - pwm
   - flash
 ram: 200

diff --git a/boards/adi/max32690evkit/max32690evkit_max32690_m4.dts b/boards/adi/max32690evkit/max32690evkit_max32690_m4.dts
@@ -163,3 +163,7 @@
 	pinctrl-0 = <&owm_io_p0_8 &owm_pe_p0_7>;
 	pinctrl-names = "default";
 };
+
+&rtc_counter {
+	status = "okay";
+};
diff --git a/boards/adi/max32690evkit/max32690evkit_max32690_m4.yaml b/boards/adi/max32690evkit/max32690evkit_max32690_m4.yaml
@@ -17,6 +17,7 @@ supported:
   - watchdog
   - adc
   - counter
+  - rtc_counter
   - pwm
   - w1
   - flash

diff --git a/drivers/counter/CMakeLists.txt b/drivers/counter/CMakeLists.txt
@@ -50,5 +50,6 @@ zephyr_library_sources_ifdef(CONFIG_COUNTER_SNPS_DW             counter_dw_timer
 zephyr_library_sources_ifdef(CONFIG_COUNTER_SHELL               counter_timer_shell.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_TIMER_RPI_PICO      counter_rpi_pico_timer.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_TIMER_MAX32         counter_max32_timer.c)
+zephyr_library_sources_ifdef(CONFIG_COUNTER_RTC_MAX32           counter_max32_rtc.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_NXP_MRT             counter_nxp_mrt.c)
 zephyr_library_sources_ifdef(CONFIG_COUNTER_RA_AGT              counter_renesas_ra_agt.c)
diff --git a/drivers/counter/Kconfig b/drivers/counter/Kconfig
@@ -98,6 +98,8 @@ source "drivers/counter/Kconfig.rpi_pico"
 
 source "drivers/counter/Kconfig.max32_timer"
 
+source "drivers/counter/Kconfig.max32_rtc"
+
 source "drivers/counter/Kconfig.nxp_mrt"
 
 source "drivers/counter/Kconfig.renesas_ra"

diff --git a/drivers/counter/Kconfig.max32_rtc b/drivers/counter/Kconfig.max32_rtc
@@ -0,0 +1,9 @@
+# Copyright (c) 2024 Analog Devices, Inc.
+# SPDX-License-Identifier: Apache-2.0
+
+config COUNTER_RTC_MAX32
+	bool "MAX32xxx counter rtc driver"
+	default y
+	depends on DT_HAS_ADI_MAX32_RTC_COUNTER_ENABLED
+	help
+	  Enable the counter rtc driver for MAX32 MCUs.