SIM3U support

boards/arm/gardena_rm_sim3u/CMakeLists.txt

@@ -0,0 +1,6 @@
+# Copyright (c) 2023 GARDENA GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+zephyr_library()
+zephyr_library_sources(board.c)

boards/arm/gardena_rm_sim3u/Kconfig.board

@@ -0,0 +1,8 @@
+# Copyright (c) 2023 GARDENA GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+config BOARD_GARDENA_RM_SIM3U
+	bool "GARDENA SIM3U radio module"
+	depends on SOC_SERIES_SIM3U
+	select SOC_PART_NUMBER_SIM3U167_B_GM

boards/arm/gardena_rm_sim3u/Kconfig.defconfig

@@ -0,0 +1,10 @@
+# Copyright (c) 2023 GARDENA GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+if BOARD_GARDENA_RM_SIM3U
+
+config BOARD
+	default "gardena_rm_sim3u"
+
+endif # BOARD_GARDENA_RM_SIM3U

boards/arm/gardena_rm_sim3u/board.c

@@ -0,0 +1,106 @@
+/*
+ * Copyright (c) 2023 GARDENA GmbH
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/drivers/gpio.h>
+#include <zephyr/init.h>
+
+static const struct gpio_dt_spec diversity_mode_gpio =
+	GPIO_DT_SPEC_GET(DT_NODELABEL(gardena_antenna), diversity_mode_gpios);
+static const struct gpio_dt_spec diversity_state_gpio =
+	GPIO_DT_SPEC_GET(DT_NODELABEL(gardena_antenna), diversity_state_gpios);
+static const struct gpio_dt_spec antenna_control_gpio =
+	GPIO_DT_SPEC_GET(DT_NODELABEL(gardena_antenna), antenna_control_gpios);
+static const struct gpio_dt_spec antenna_input_gpio =
+	GPIO_DT_SPEC_GET(DT_NODELABEL(gardena_antenna), antenna_input_gpios);
+
+struct led_mirror {
+	struct gpio_dt_spec source;
+	struct gpio_dt_spec destination;
+	struct gpio_callback callback;
+};
+
+static struct led_mirror led_mirrors[] = {
+	{
+		.source = GPIO_DT_SPEC_GET(DT_NODELABEL(gardena_antenna), led_red_input_gpios),
+		.destination = GPIO_DT_SPEC_GET(DT_NODELABEL(led_red), gpios),
+	},
+	{
+		.source = GPIO_DT_SPEC_GET(DT_NODELABEL(gardena_antenna), led_green_input_gpios),
+		.destination = GPIO_DT_SPEC_GET(DT_NODELABEL(led_green), gpios),
+	},
+	{
+		.source = GPIO_DT_SPEC_GET(DT_NODELABEL(gardena_antenna), led_blue_input_gpios),
+		.destination = GPIO_DT_SPEC_GET(DT_NODELABEL(led_blue), gpios),
+	},
+};
+
+static void led_mirror_callback_handler(const struct device *port, struct gpio_callback *cb,
+					gpio_port_pins_t pins)
+{
+	ARG_UNUSED(port);
+	ARG_UNUSED(pins);
+
+	struct led_mirror *led_mirror = CONTAINER_OF(cb, struct led_mirror, callback);
+
+	gpio_pin_set_dt(&led_mirror->destination, gpio_pin_get_dt(&led_mirror->source));
+}
+
+static int board_init(void)
+{
+	if (!device_is_ready(diversity_mode_gpio.port)) {
+		return -ENODEV;
+	}
+	if (!device_is_ready(diversity_state_gpio.port)) {
+		return -ENODEV;
+	}
+	if (!device_is_ready(antenna_control_gpio.port)) {
+		return -ENODEV;
+	}
+	if (!device_is_ready(antenna_input_gpio.port)) {
+		return -ENODEV;
+	}
+
+	/* inactive: manual, active: auto */
+	gpio_pin_configure_dt(&diversity_mode_gpio, GPIO_OUTPUT_INACTIVE);
+
+	/* In manual mode: diversity pin state */
+	gpio_pin_configure_dt(&diversity_state_gpio, GPIO_OUTPUT_INACTIVE);
+
+	/* inactive: external, active: internal */
+	gpio_pin_configure_dt(&antenna_control_gpio, GPIO_OUTPUT_ACTIVE);
+
+	/* Main MCU requests specific antenna. Ignored for now
+	 * inactive: external, active: internal
+	 */
+	gpio_pin_configure_dt(&antenna_input_gpio, GPIO_INPUT);
+
+	for (size_t index = 0; index < ARRAY_SIZE(led_mirrors); index += 1) {
+		struct led_mirror *led_mirror = &led_mirrors[index];
+
+		if (!device_is_ready(led_mirror->source.port)) {
+			continue;
+		}
+		if (!device_is_ready(led_mirror->destination.port)) {
+			continue;
+		}
+
+		gpio_pin_configure_dt(&led_mirror->source, GPIO_INPUT);
+		gpio_pin_configure_dt(&led_mirror->destination, GPIO_OUTPUT);
+
+		gpio_init_callback(&led_mirror->callback, led_mirror_callback_handler,
+				   BIT(led_mirror->source.pin));
+		gpio_add_callback(led_mirror->source.port, &led_mirror->callback);
+
+		gpio_pin_interrupt_configure_dt(&led_mirror->source, GPIO_INT_EDGE_BOTH);
+
+		/* Initially apply mirror just in case */
+		led_mirror_callback_handler(NULL, &led_mirror->callback, 0);
+	}
+
+	return 0;
+}
+
+SYS_INIT(board_init, PRE_KERNEL_2, 0);

boards/arm/gardena_rm_sim3u/board.cmake

@@ -0,0 +1,5 @@
+# Copyright (c) 2023 GARDENA GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+include(${ZEPHYR_BASE}/boards/common/openocd.board.cmake)

boards/arm/gardena_rm_sim3u/gardena_rm_sim3u-pinctrl.dtsi

@@ -0,0 +1,37 @@
+/*
+ * Copyright (c) 2023 GARDENA GmbH
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <zephyr/dt-bindings/pinctrl/si32-pinctrl.h>
+
+&pinctrl {
+	usart0_default: usart0_default {
+		group1 {
+			pinmux = <SI32_MUX(USART0_TX, 0, 0)>,
+				<SI32_MUX(USART0_RTS, 0, 2)>;
+			output-enable;
+		};
+		group2 {
+			pinmux = <SI32_MUX(USART0_RX, 0, 1)>,
+				<SI32_MUX(USART0_CTS, 0, 3)>;
+			input-enable;
+		};
+	};
+
+	spi2_default: spi2_default {
+		group1 {
+			pinmux = <SI32_MUX(SPI2_SCK, 3, 6)>,
+				<SI32_MUX(SPI2_MOSI, 3, 8)>,
+				<SI32_MUX(SPI2_NSS, 3, 9)>;
+			output-enable;
+		};
+
+		group2 {
+			pinmux = <SI32_MUX(SPI2_MISO, 3, 7)>;
+			input-enable;
+		};
+	};
+};
+

boards/arm/gardena_rm_sim3u/gardena_rm_sim3u.dts

@@ -0,0 +1,148 @@
+/*
+ * Copyright (c) 2023 GARDENA GmbH
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+/dts-v1/;
+#include <silabs/sim3u167bgm.dtsi>
+#include <zephyr/dt-bindings/gpio/silabs-si32-hd-gpio.h>
+#include "gardena_rm_sim3u-pinctrl.dtsi"
+
+/ {
+	model = "GARDENA sim3u radio module";
+	compatible = "gardena,rm_sim3u", "silabs,sim3u";
+
+	chosen {
+		zephyr,console = &usart0;
+		zephyr,shell-uart = &usart0;
+		zephyr,sram = &sram0;
+		zephyr,flash = &flash0;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+		status = "okay";
+
+		led_red: led_red {
+			gpios = <&gpio4 0 (GPIO_ACTIVE_LOW | SI32_GPIO_DS_ENABLE_CURRENT_LIMIT)>;
+			label = "Red LED 0";
+		};
+		led_green: led_green {
+			gpios = <&gpio4 1 (GPIO_ACTIVE_LOW | SI32_GPIO_DS_ENABLE_CURRENT_LIMIT)>;
+			label = "Green LED 0";
+		};
+		led_blue: led_blue {
+			gpios = <&gpio4 2 (GPIO_ACTIVE_LOW | SI32_GPIO_DS_ENABLE_CURRENT_LIMIT)>;
+			label = "Blue LED 0";
+		};
+	};
+
+	gardena_antenna: gardena_antenna {
+		compatible = "gardena,antenna";
+		diversity-mode-gpios = <&gpio2 14 GPIO_ACTIVE_HIGH>;
+		diversity-state-gpios = <&gpio2 10 GPIO_ACTIVE_HIGH>;
+		antenna-control-gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>;
+		antenna-input-gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
+
+		led-red-input-gpios = <&gpio0 4 GPIO_ACTIVE_HIGH>;
+		led-green-input-gpios = <&gpio0 5 GPIO_ACTIVE_HIGH>;
+		led-blue-input-gpios = <&gpio0 6 GPIO_ACTIVE_HIGH>;
+	};
+};
+
+&cpu0 {
+	clock-frequency = <76953600>;
+};
+
+&pll0 {
+	status = "okay";
+};
+
+&clk_ahb {
+	clocks = <&pll0>;
+	status = "okay";
+};
+
+&clk_apb {
+	divider = <2>;
+	status = "okay";
+};
+
+&usart0 {
+	current-speed = <115200>;
+	pinctrl-0 = <&usart0_default>;
+	pinctrl-names = "default";
+	hw-flow-control;
+	status = "okay";
+};
+
+&gpio0 {
+	status = "okay";
+};
+
+&gpio1 {
+	status = "okay";
+};
+
+&gpio2 {
+	disable-pullups;
+	status = "okay";
+};
+
+&gpio3 {
+	status = "okay";
+};
+
+&gpio4 {
+	nchannel-current-limit = <7>;
+	pchannel-current-limit = <15>;
+	enable-bias;
+	low-power-port-mode;
+	enable-drivers;
+	status = "okay";
+};
+
+&spi2 {
+	pinctrl-0 = <&spi2_default>;
+	pinctrl-names = "default";
+	status = "ok";
+
+	si4467@0 {
+		compatible = "silabs,si4467";
+		spi-max-frequency = <2000000>;
+		xtal-frequency = <26000000>;
+		reg = <0>;
+		gpio-0-gpios = <&gpio2 4 GPIO_ACTIVE_HIGH>;
+		gpio-1-gpios = <&gpio2 5 GPIO_ACTIVE_HIGH>;
+		gpio-2-gpios = <&gpio2 6 GPIO_ACTIVE_HIGH>;
+		gpio-3-gpios = <&gpio2 7 GPIO_ACTIVE_HIGH>;
+
+		sdn-gpios    = <&gpio3 4 GPIO_ACTIVE_HIGH>;
+		nirq-gpios   = <&gpio3 5 GPIO_ACTIVE_LOW>;
+
+		rx-enable-gpios = <&gpio4 4 (GPIO_ACTIVE_HIGH | SI32_GPIO_DS_ENABLE_CURRENT_LIMIT)>;
+		tx-enable-gpios = <&gpio4 5 (GPIO_ACTIVE_HIGH | SI32_GPIO_DS_ENABLE_CURRENT_LIMIT)>;
+	};
+
+};
+
+&flash0 {
+	status = "okay";
+
+	partitions {
+		compatible = "fixed-partitions";
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		slot0_partition: partition@0 {
+			label = "image-0";
+			reg = <0x00000000 DT_SIZE_K(1664)>;
+		};
+
+		storage_partition: partition@250000 {
+			label = "storage";
+			reg = <0x00030000 DT_SIZE_K(64)>;
+		};
+	};
+};

boards/arm/gardena_rm_sim3u/gardena_rm_sim3u.yaml

@@ -0,0 +1,16 @@
+# Copyright (c) 2023 GARDENA GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+identifier: gardena_rm_sim3u
+name: GARDENA sim3u radio module
+type: mcu
+arch: arm
+ram: 32
+flash: 256
+toolchain:
+  - zephyr
+  - gnuarmemb
+  - xtools
+supported:
+  - gpio

boards/arm/gardena_rm_sim3u/gardena_rm_sim3u_defconfig

@@ -0,0 +1,13 @@
+CONFIG_SOC_SERIES_SIM3U=y
+
+# enable uart driver
+CONFIG_SERIAL=y
+
+# enable console
+CONFIG_CONSOLE=y
+CONFIG_UART_CONSOLE=y
+
+# enable GPIO
+CONFIG_GPIO=y
+
+CONFIG_SPI=y

boards/arm/gardena_rm_sim3u/support/openocd.cfg

@@ -0,0 +1,21 @@
+# Copyright (c) 2023 GARDENA GmbH
+#
+# SPDX-License-Identifier: Apache-2.0
+
+source [find interface/ftdi/olimex-arm-usb-tiny-h.cfg]
+source [find interface/ftdi/olimex-arm-jtag-swd.cfg]
+
+source [find target/sim3x.cfg]
+
+reset_config none separate
+
+$_TARGETNAME configure -event gdb-attach {
+        echo "Debugger attaching: halting execution"
+        reset halt
+        gdb_breakpoint_override hard
+}
+
+$_TARGETNAME configure -event gdb-detach {
+        echo "Debugger detaching: resuming execution"
+        resume
+}

drivers/clock_control/CMakeLists.txt

@@ -22,6 +22,9 @@ zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_NRF_DRIVER_CALIBRATION nrf_clo
 zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_RV32M1_PCC          clock_control_rv32m1_pcc.c)
 zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_INFINEON_CAT1       clock_control_ifx_cat1.c)
 zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_SAM                 clock_control_sam_pmc.c)
+zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_SI32_PLL            clock_control_si32_pll.c)
+zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_SI32_AHB            clock_control_si32_ahb.c)
+zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_SI32_APB            clock_control_si32_apb.c)
 zephyr_library_sources_ifdef(CONFIG_CLOCK_CONTROL_SMARTBOND           clock_control_smartbond.c)
 
 

drivers/clock_control/Kconfig

@@ -70,6 +70,8 @@ source "drivers/clock_control/Kconfig.gd32"
 
 source "drivers/clock_control/Kconfig.sam"
 
+source "drivers/clock_control/Kconfig.si32"
+
 source "drivers/clock_control/Kconfig.smartbond"
 
 endif # CLOCK_CONTROL