drivers: pinctrl: add pinctrl driver for ARC emsdp

Add Synopsys ARC EMSDP board Pin controller for its Pmod and Arduino shield interface. Signed-off-by: Siyuan Cheng <[email protected]>
besmarsh · May 29, 2023 · 4babd54 · 4babd54
1 parent 0ce3e20
commit 4babd54
Show file tree

Hide file tree

Showing 12 changed files with 630 additions and 0 deletions.
diff --git a/boards/arc/emsdp/doc/index.rst b/boards/arc/emsdp/doc/index.rst
@@ -98,6 +98,30 @@ Note: DW SPI only available on SPI0 and SPI1.
 whole flash then write 4 byte data to the flash. Read from the flash and compare the
 result with buffer to check functionality.
 
+Pinmux interface
+================
+
+The following pinmux peripheral module standards are supported:
+
+* Digilent Pmod (3x)
+
+The ARC EM SDP features three 12-pin Pmod connectors: Pmod_A, Pmod_B, and Pmod_C.
+The functionality of the Pmod connectors is programmable and includes GPIO, UART, SPI,
+I2C, and PWM (Note: support two type UART Pmod interface: UARTA is newer version).
+Multiplexing is controlled by software using the PMOD_MUX_CTRL register.
+
+* Arduino (1x)
+
+The ARC EM SDP provides an Arduino shield interface. Multiplexing is controlled by software
+using the ARDUINO_MUX_CTRL register. Note: some IO must be programmed in group and can't be
+set individually, for details see Table 9 in `EM Software Development Platform user guide`_.
+
+* MikroBUS (1x)
+
+Note that since the controllers that are mapped to the MikroBUS are shared with the Arduino
+controllers, and therefore the MikroBUS functions are only available when the Arduino
+multiplexer ARDUINO_MUX_CTRL is in the default mode (GPIO).
+
 Programming and Debugging
 *************************
 
@@ -252,6 +276,9 @@ References
 
 .. target-notes::
 
+.. _EM Software Development Platform user guide:
+   https://www.synopsys.com/dw/ipdir.php?ds=arc-em-software-development-platform
+
 .. _Digilent Pmod Modules:
    http://store.digilentinc.com/pmod-modules
 

diff --git a/boards/arc/emsdp/emsdp-pinctrl.dtsi b/boards/arc/emsdp/emsdp-pinctrl.dtsi
@@ -0,0 +1,133 @@
+/* SPDX-License-Identifier: Apache-2.0 */
+
+#include <zephyr/dt-bindings/pinctrl/emsdp-pinctrl.h>
+
+&pinctrl {
+	/* PMOD_A */
+	pmodA_gpio: pmodA_gpio {
+		pinmux = <PMOD_A PMOD_GPIO>;
+	};
+	pmodA_uarta: pmodA_uarta {
+		pinmux = <PMOD_A PMOD_UARTA>;
+	};
+	pmodA_uartb: pmodA_uartb {
+		pinmux = <PMOD_A PMOD_UARTB>;
+	};
+	pmodA_spi1_cs0: pmodA_spi1_cs0 {
+		pinmux = <PMOD_A PMOD_SPI>;
+	};
+	pmodA_i2c2: pmodA_i2c2 {
+		pinmux = <PMOD_A PMOD_I2C>;
+	};
+	pmodA_pwm1: pmodA_pwm1 {
+		pinmux = <PMOD_A PMOD_PWM_MODE1>;
+	};
+	pmodA_pwm2: pmodA_pwm2 {
+		pinmux = <PMOD_A PMOD_PWM_MODE2>;
+	};
+
+	/* PMOD_B */
+	pmodB_gpio: pmodB_gpio {
+		pinmux = <PMOD_B PMOD_GPIO>;
+	};
+	pmodB_uarta: pmodB_uarta {
+		pinmux = <PMOD_B PMOD_UARTA>;
+	};
+	pmodB_uartb: pmodB_uartb {
+		pinmux = <PMOD_B PMOD_UARTB>;
+	};
+	pmodB_spi1_cs1: pmodB_spi1_cs1 {
+		pinmux = <PMOD_B PMOD_SPI>;
+	};
+	pmodB_i2c2: pmodB_i2c2 {
+		pinmux = <PMOD_B PMOD_I2C>;
+	};
+	pmodB_pwm1: pmodB_pwm1 {
+		pinmux = <PMOD_B PMOD_PWM_MODE1>;
+	};
+	pmodB_pwm2: pmodB_pwm2 {
+		pinmux = <PMOD_B PMOD_PWM_MODE2>;
+	};
+
+	/* PMOD_C */
+	pmodC_gpio: pmodC_gpio {
+		pinmux = <PMOD_C PMOD_GPIO>;
+	};
+	pmodC_uarta: pmodC_uarta {
+		pinmux = <PMOD_C PMOD_UARTA>;
+	};
+	pmodC_uartb: pmodC_uartb {
+		pinmux = <PMOD_C PMOD_UARTB>;
+	};
+	pmodC_spi1_cs2: pmodC_spi1_cs2 {
+		pinmux = <PMOD_C PMOD_SPI>;
+	};
+	pmodC_i2c2: pmodC_i2c2 {
+		pinmux = <PMOD_C PMOD_I2C>;
+	};
+	pmodC_pwm1: pmodC_pwm1 {
+		pinmux = <PMOD_C PMOD_PWM_MODE1>;
+	};
+	pmodC_pwm2: pmodC_pwm2 {
+		pinmux = <PMOD_C PMOD_PWM_MODE2>;
+	};
+
+	/* ARDUINO_PIN_1 */
+	arduino_CFG0_gpio: arduino_CFG0_gpio {
+		pinmux = <ARDUINO_PIN_1 ARDUINO_GPIO>;
+	};
+	arduino_CFG0_uart: arduino_CFG0_uart {
+		pinmux = <ARDUINO_PIN_1 ARDUINO_UART>;
+	};
+
+	/* ARDUINO_PIN_3 */
+	arduino_CFG1_gpio: arduino_CFG1_gpio {
+		pinmux = <ARDUINO_PIN_3 ARDUINO_GPIO>;
+	};
+	arduino_CFG1_pwm: arduino_CFG1_pwm{
+		pinmux = <ARDUINO_PIN_3 ARDUINO_PWM>;
+	};
+
+	/* ARDUINO_PIN_5 */
+	arduino_CFG2_gpio: arduino_CFG2_gpio {
+		pinmux = <ARDUINO_PIN_5 ARDUINO_GPIO>;
+	};
+	arduino_CFG2_pwm: arduino_CFG2_pwm {
+		pinmux = <ARDUINO_PIN_5 ARDUINO_PWM>;
+	};
+
+	/* ARDUINO_PIN_7 */
+	arduino_CFG3_gpio: arduino_CFG3_gpio {
+		pinmux = <ARDUINO_PIN_7 ARDUINO_GPIO>;
+	};
+	arduino_CFG3_pwm: arduino_CFG3_pwm {
+		pinmux = <ARDUINO_PIN_7 ARDUINO_PWM>;
+	};
+
+	/* ARDUINO_PIN_9 */
+	arduino_CFG4_gpio: arduino_CFG4_gpio {
+		pinmux = <ARDUINO_PIN_9 ARDUINO_GPIO>;
+	};
+	arduino_CFG4_pwm: arduino_CFG4_pwm {
+		pinmux = <ARDUINO_PIN_9 ARDUINO_PWM>;
+	};
+
+	/* ARDUINO_PIN_13 */
+	arduino_CFG5_gpio: arduino_CFG5_gpio {
+		pinmux = <ARDUINO_PIN_13 ARDUINO_GPIO>;
+	};
+	arduino_CFG5_spi: arduino_CFG5_spi {
+		pinmux = <ARDUINO_PIN_13 ARDUINO_SPI>;
+	};
+	arduino_CFG5_pwm: arduino_CFG5_pwm {
+		pinmux = <ARDUINO_PIN_13 ARDUINO_PWM>;
+	};
+
+	/* ARDUINO_PIN_AD5 */
+	arduino_CFG6_gpio: arduino_CFG6_gpio {
+		pinmux = <ARDUINO_PIN_AD5 ARDUINO_GPIO>;
+	};
+	arduino_CFG6_i2c: arduino_CFG6_i2c {
+		pinmux = <ARDUINO_PIN_AD5 ARDUINO_I2C>;
+	};
+};
diff --git a/boards/arc/emsdp/emsdp.dts b/boards/arc/emsdp/emsdp.dts
@@ -9,6 +9,7 @@
 #include <synopsys/emsdp.dtsi>
 #include <mem.h>
 #include "board.dtsi"
+#include "emsdp-pinctrl.dtsi"
 
 / {
 	model = "emsdp";
@@ -49,5 +50,17 @@
 		spi@f1000000 {
 			interrupts = <84 1>;
 		};
+
+		spi@80010000 {
+			interrupts = <63 2>, <64 2>, <65 2>;
+			pinctrl-0 = <&arduino_CFG5_spi>;
+			pinctrl-names = "default";
+		};
+
+		spi@80010100 {
+			interrupts = <67 2>, <68 2>, <69 2>;
+			pinctrl-0 = <&pmodA_spi1_cs0>;
+			pinctrl-names = "default";
+		};
 	};
 };
diff --git a/boards/arc/emsdp/emsdp_defconfig b/boards/arc/emsdp/emsdp_defconfig
@@ -16,3 +16,4 @@ CONFIG_UART_INTERRUPT_DRIVEN=y
 CONFIG_ARC_MPU_ENABLE=y
 CONFIG_GPIO=y
 CONFIG_SPI=y
+CONFIG_PINCTRL=y
diff --git a/drivers/pinctrl/CMakeLists.txt b/drivers/pinctrl/CMakeLists.txt
@@ -30,3 +30,4 @@ zephyr_library_sources_ifdef(CONFIG_PINCTRL_XMC4XXX pinctrl_xmc4xxx.c)
 zephyr_library_sources_ifdef(CONFIG_PINCTRL_NXP_S32 pinctrl_nxp_s32.c)
 zephyr_library_sources_ifdef(CONFIG_PINCTRL_GECKO pinctrl_gecko.c)
 zephyr_library_sources_ifdef(CONFIG_PINCTRL_TI_K3 pinctrl_ti_k3.c)
+zephyr_library_sources_ifdef(CONFIG_PINCTRL_EMSDP pinctrl_emsdp.c)
diff --git a/drivers/pinctrl/Kconfig b/drivers/pinctrl/Kconfig
@@ -59,5 +59,6 @@ source "drivers/pinctrl/Kconfig.xmc4xxx"
 source "drivers/pinctrl/Kconfig.nxp_s32"
 source "drivers/pinctrl/Kconfig.gecko"
 source "drivers/pinctrl/Kconfig.ti_k3"
+source "drivers/pinctrl/Kconfig.emsdp"
 
 endif # PINCTRL
diff --git a/drivers/pinctrl/Kconfig.emsdp b/drivers/pinctrl/Kconfig.emsdp
@@ -0,0 +1,9 @@
+# Copyright (c) 2023 Synopsys
+# SPDX-License-Identifier: Apache-2.0
+
+config PINCTRL_EMSDP
+	bool "EMSDP pinmux driver"
+	default y
+	depends on DT_HAS_SNPS_EMSDP_PINCTRL_ENABLED
+	help
+	  Enable driver for the synopsys ARC EMSDP pinctrl driver