boards: mimxrt595: Add SPI support

Enable access to the HS_SPI pins(JP26) on the mimxrt595_evk board.
Using DMA mode, tested with spi_loopback testcase.

Signed-off-by: Chay Guo <changyi.guo@nxp.com>

boards/arm/mimxrt595_evk/doc/index.rst

@@ -79,6 +79,8 @@ features:
 +-----------+------------+-------------------------------------+
 | I2C       | on-chip    | i2c                                 |
 +-----------+------------+-------------------------------------+
+| SPI       | on-chip    | spi                                 |
++-----------+------------+-------------------------------------+
 
 The default configuration can be found in the defconfig file:
 
@@ -115,6 +117,14 @@ functionality of a pin.
 +---------+-----------------+----------------------------+
 | PIO0_22 | GPIO            | FXOS8700 TRIGGER           |
 +---------+-----------------+----------------------------+
+| PIO1_5  | SPI             | SPI MOSI                   |
++---------+-----------------+----------------------------+
+| PIO1_4  | SPI             | SPI MISO                   |
++---------+-----------------+----------------------------+
+| PIO1_3  | SPI             | SPI SCK                    |
++---------+-----------------+----------------------------+
+| PIO1_6  | SPI             | SPI SSEL                   |
++---------+-----------------+----------------------------+
 
 System Clock
 ============

boards/arm/mimxrt595_evk/mimxrt595_evk_cm33-pinctrl.dtsi

@@ -49,4 +49,16 @@
 		};
 	};
 
+	pinmux_flexcomm16_spi: pinmux_flexcomm16_spi {
+		group0 {
+			pinmux = <HS_SPI1_SCK_PIO1_3>,
+					<HS_SPI1_MISO_PIO1_4>,
+					<HS_SPI1_MOSI_PIO1_5>,
+					<HS_SPI1_SSELN0_PIO1_6>;
+			input-enable;
+			slew-rate = "normal";
+			drive-strength = "normal";
+		};
+	};
+
 };

boards/arm/mimxrt595_evk/mimxrt595_evk_cm33.dts

@@ -122,6 +122,15 @@ arduino_i2c: &flexcomm4 {
 	};
 };
 
+hs_spi1: &hs_lspi1 {
+	compatible = "nxp,lpc-spi";
+	pinctrl-0 = <&pinmux_flexcomm16_spi>;
+	pinctrl-names = "default";
+	dmas = <&dma0 28>, <&dma0 29>;
+	dma-names = "rx", "tx";
+	status = "okay";
+};
+
 arduino_serial: &flexcomm12 {
 	compatible = "nxp,lpc-usart";
 	status = "okay";

boards/arm/mimxrt595_evk/mimxrt595_evk_cm33.yaml

@@ -21,3 +21,4 @@ supported:
   - dma
   - gpio
   - i2c
+  - spi

dts/arm/nxp/nxp_rt5xx_common.dtsi

@@ -306,6 +306,17 @@
 		#size-cells = <0>;
 	};
 
+	hs_lspi1: spi@128000 {
+		compatible = "nxp,lpc-spi";
+		reg = <0x128000 0x1000>;
+		interrupts = <66 0>;
+		label = "HS_LSPI_1";
+		clocks = <&clkctl1 MCUX_HS_SPI1_CLK>;
+		status = "disabled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+	};
+
 	dma0: dma-controller@104000 {
 		compatible = "nxp,lpc-dma";
 		reg = <0x104000 0x1000>;

soc/arm/nxp_imx/rt5xx/Kconfig.defconfig.mimxrt595_cm33

@@ -24,6 +24,10 @@ config I2C_MCUX_FLEXCOMM
 	default y if HAS_MCUX_FLEXCOMM
 	depends on I2C
 
+config SPI_MCUX_FLEXCOMM
+	default y if HAS_MCUX_FLEXCOMM
+	depends on SPI
+
 config CLOCK_CONTROL_MCUX_SYSCON
 	default y if HAS_MCUX_SYSCON
 	depends on CLOCK_CONTROL

soc/arm/nxp_imx/rt5xx/soc.c

@@ -188,6 +188,9 @@ void clock_init(void)
 	/* Switch FLEXCOMM4 to FRO_DIV4 */
 	CLOCK_AttachClk(kFRO_DIV4_to_FLEXCOMM4);
 #endif
+#if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(hs_spi1), nxp_lpc_spi, okay)
+	CLOCK_AttachClk(kFRO_DIV4_to_FLEXCOMM16);
+#endif
 #if DT_NODE_HAS_COMPAT_STATUS(DT_NODELABEL(flexcomm12), nxp_lpc_usart, okay)
 	/* Switch FLEXCOMM12 to FRG */
 	CLOCK_AttachClk(kFRG_to_FLEXCOMM12);

tests/drivers/spi/spi_loopback/boards/mimxrt595_evk_cm33.conf

@@ -0,0 +1,9 @@
+#
+# Copyright (c) 2020, NXP
+#
+# SPDX-License-Identifier: Apache-2.0
+#
+
+CONFIG_SPI_LOOPBACK_DRV_NAME="HS_LSPI_1"
+CONFIG_SPI_MCUX_FLEXCOMM_DMA=y
+CONFIG_SPI_ASYNC=n