dma: add EDMA MCUX support for RT and k6s

tested on mimxrt1060_evt
  MEMORY_NOCACHE is needed
test on frdmk64f
  special test slot need configure with
  CONFIG_DMA_TEST_SLOT_START

Signed-off-by: Hake Huang <[email protected]>

Author: hakehuang

boards/arm/frdm_k64f/frdm_k64f.dts

@@ -218,3 +218,7 @@ arduino_spi: &spi0 {
 	status = "okay";
 	bus-speed = <125000>;
 };
+
+&edma0 {
+	status = "okay";
+};

boards/arm/mimxrt1060_evk/mimxrt1060_evk.dts

@@ -140,4 +140,9 @@ arduino_serial: &lpuart3 {};
 	status = "okay";
 	pwr-gpios = <&gpio1 5 GPIO_ACTIVE_HIGH>;
 	cd-gpios = <&gpio2 28 GPIO_ACTIVE_LOW>;
+	status = "okay";
+};
+
+&edma0 {
+	status = "okay";
 };

boards/arm/mimxrt1060_evk/mimxrt1060_evk.yaml

@@ -24,3 +24,4 @@ supported:
   - sdhc
   - usb_device
   - kscan:touch
+  - dma

drivers/dma/CMakeLists.txt

@@ -11,3 +11,4 @@ zephyr_library_sources_ifdef(CONFIG_DMA_DW		dma_dw.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_NIOS2_MSGDMA	dma_nios2_msgdma.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_SAM0		dma_sam0.c)
 zephyr_library_sources_ifdef(CONFIG_USERSPACE		dma_handlers.c)
+zephyr_library_sources_ifdef(CONFIG_DMA_MCUX_EDMA	dma_mcux_edma.c)

drivers/dma/Kconfig

@@ -48,4 +48,6 @@ source "drivers/dma/Kconfig.nios2_msgdma"
 
 source "drivers/dma/Kconfig.sam0"
 
+source "drivers/dma/Kconfig.mcux_edma"
+
 endif # DMA

drivers/dma/Kconfig.mcux_edma

@@ -0,0 +1,29 @@
+# DMA configuration options
+
+# Copyright (c) 2020, NXP
+# SPDX-License-Identifier: Apache-2.0
+
+config DMA_MCUX_EDMA
+	bool "Enable MCUX DMA driver"
+	depends on HAS_MCUX_EDMA
+	select NOCACHE_MEMORY if HAS_MCUX_CACHE
+	help
+	  DMA driver for MCUX series SoCs.
+
+if DMA_MCUX_EDMA
+
+config DMA_TCD_QUEUE_SIZE
+	int "number of TCD in a queue for SG mode"
+	default 2
+	help
+	  number of TCD in a queue for SG mode
+
+config DMA_MCUX_TEST_SLOT_START
+	int "test slot start num"
+	depends on SOC_SERIES_KINETIS_K6X
+	default 58
+	help
+	  test slot start num
+
+
+endif # DMA_MCUX_EDMA