drivers: dma: Add initial support for NXP SDMA

This adds initial support for NXP SDMA controller. We make use of NXP HAL to configure the IP. SDMA uses BD (buffer descriptors) to describe a transfer. We create a cyclic list of descriptors and trigger them manually at start and later when data is available. This is tested using Sound Open Firmware app on top of Zephyr. Signed-off-by: Daniel Baluta <[email protected]>
zephyrproject-rtos · Oct 23, 2024 · b3a9f47 · b3a9f47
1 parent dfbcea7
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diff --git a/drivers/dma/CMakeLists.txt b/drivers/dma/CMakeLists.txt
@@ -44,3 +44,4 @@ zephyr_library_sources_ifdef(CONFIG_DMA_NXP_SOF_HOST_DMA dma_nxp_sof_host_dma.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_EMUL	    dma_emul.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_NXP_EDMA dma_nxp_edma.c)
 zephyr_library_sources_ifdef(CONFIG_DMA_DW_AXI		dma_dw_axi.c)
+zephyr_library_sources_ifdef(CONFIG_DMA_NXP_SDMA dma_nxp_sdma.c)
diff --git a/drivers/dma/Kconfig b/drivers/dma/Kconfig
@@ -81,5 +81,6 @@ source "drivers/dma/Kconfig.emul"
 source "drivers/dma/Kconfig.nxp_edma"
 
 source "drivers/dma/Kconfig.dw_axi_dmac"
+source "drivers/dma/Kconfig.nxp_sdma"
 
 endif # DMA
diff --git a/drivers/dma/Kconfig.nxp_sdma b/drivers/dma/Kconfig.nxp_sdma
@@ -0,0 +1,9 @@
+# Copyright 2024 NXP
+# SPDX-License-Identifier: Apache-2.0
+
+config DMA_NXP_SDMA
+	bool "NXP SDMA driver"
+	default y
+	depends on DT_HAS_NXP_SDMA_ENABLED
+	help
+		Enable driver for NXP's SDMA IP.