drivers: edma_rev2: support 64-bit TCD registers

On some EDMA versions, some TCD registers (e.g: SADDR, DADDR,
etc...) have a LOW and a HIGH version, meaning the data they
hold is 64-bit (instead of 32-bit). Add support for the following
such registers: SADDR, DADDR, SLAST, DLAST.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>

Author: LaurentiuM1234

mcux/mcux-sdk/drivers/edma_rev2/fsl_edma_rev2.c

@@ -250,6 +250,14 @@ status_t EDMA_ConfigureTransfer(edma_config_t *cfg, int channel,
     EDMA_ChannelRegWrite(cfg, channel, EDMA_TCD_BITER, EDMA_TCD_BITER_ELINKNO(biter));
     EDMA_ChannelRegWrite(cfg, channel, EDMA_TCD_NBYTES, EDMA_TCD_NBYTES_MLOFFNO(burstSize));
 
+    if (cfg->flags & EDMA_HAS_64BIT_TCD_FLAG) {
+        /* EDMA version has 64-bit TCD but 64-bit addresses are not currently
+         * supported by the API. Pad higher 32 bits with 0s.
+         */
+        EDMA_ChannelRegWrite(cfg, channel, EDMA_TCD_SADDR_HIGH, 0x0);
+        EDMA_ChannelRegWrite(cfg, channel, EDMA_TCD_DADDR_HIGH, 0x0);
+    }
+
     /* clean registers to make sure there's no leftover config */
     EDMA_ChannelRegWrite(cfg, channel, EDMA_TCD_CSR, 0);
 

mcux/mcux-sdk/drivers/edma_rev2/fsl_edma_rev2.h

@@ -17,6 +17,7 @@ extern "C" {
 #define EDMA_HAS_CH_MUX_FLAG EDMA_BIT(0)
 #define EDMA_ALLOWS_128B_TRANSFER_FLAG EDMA_BIT(1)
 #define EDMA_HAS_MP_MUX_FLAG EDMA_BIT(2)
+#define EDMA_HAS_64BIT_TCD_FLAG EDMA_BIT(3)
 
 /* internal utility macros */
 #define EDMA_BIT(x) (1 << (x))
@@ -60,6 +61,10 @@ extern "C" {
 #define EDMA_TCD_CH_MUX_INDEX 25
 #define EDMA_TCD_CH_MATTR_INDEX 26
 #define EDMA_MP_CH_MUX_INDEX 27
+#define EDMA_TCD_SADDR_HIGH_INDEX 28
+#define EDMA_TCD_DADDR_HIGH_INDEX 29
+#define EDMA_TCD_SLAST_SDA_HIGH_INDEX 30
+#define EDMA_TCD_DLAST_SGA_HIGH_INDEX 31
 
 /* utility macros - for external and internal usage */
 #define EDMA_HAS_MUX(cfg) ((cfg)->flags & EDMA_HAS_CH_MUX_FLAG)
@@ -121,6 +126,10 @@ extern "C" {
 /* non-common TCD-related registers */
 #define EDMA_TCD_CH_MUX EDMA_REGISTER_MAKE(EDMA_TCD_CH_MUX_INDEX, kEDMA_RegAccess32)
 #define EDMA_TCD_CH_MATTR EDMA_REGISTER_MAKE(EDMA_TCD_CH_MATTR_INDEX, kEDMA_RegAccess16)
+#define EDMA_TCD_SADDR_HIGH EDMA_REGISTER_MAKE(EDMA_TCD_SADDR_HIGH_INDEX, kEDMA_RegAccess32)
+#define EDMA_TCD_DADDR_HIGH EDMA_REGISTER_MAKE(EDMA_TCD_DADDR_HIGH_INDEX, kEDMA_RegAccess32)
+#define EDMA_TCD_SLAST_SDA_HIGH EDMA_REGISTER_MAKE(EDMA_TCD_SLAST_SDA_HIGH_INDEX, kEDMA_RegAccess32)
+#define EDMA_TCD_DLAST_SGA_HIGH EDMA_REGISTER_MAKE(EDMA_TCD_DLAST_SGA_HIGH_INDEX, kEDMA_RegAccess32)
 
 enum _edma_status {
     /* Passed configuration is invalid */