misc: mathworks: capture reset reg from DT

Signed-off-by: Matt Fornero <matt.fornero@mathworks.com>

Author: Matthew Fornero

drivers/misc/mathworks/mathworks_ipcore.c

@@ -46,6 +46,12 @@ static int mathworks_ipcore_of_probe(struct platform_device *op)
         return -ENOENT;
     }
 
+    status = of_property_read_u32(dev->of_node, "mathworks,rst-reg", &mwdev->rst_reg);
+    if(status) {
+    	/* Fall back to 0 if the property does not exist */
+    	mwdev->rst_reg = 0;
+    }
+
     mwdev->mw_ip_info->private = mwdev;
 
 	status = devm_mathworks_ip_register(mwdev->mw_ip_info);

drivers/misc/mathworks/mathworks_ipcore.h

@@ -51,6 +51,7 @@
 
 struct mathworks_ipcore_dev {
     struct mathworks_ip_info 	*mw_ip_info;
+    u32							rst_reg;
     void						*private;
 };
 

drivers/misc/mathworks/mw_stream_channel.c

@@ -1037,7 +1037,7 @@ static int mw_axidma_setupchannel(struct mwadma_dev *mwdev,
 
     /* Write to the IPCore_PacketSize_AXI4_Stream_Master 0x8 to specify the length*/
     /*reset pcore*/
-    mw_ip_write32(MWDEV_TO_MWIP(mwdev), 0x0, 0x1);
+    mw_ip_write32(MWDEV_TO_MWIP(mwdev), mwdev->mw_ipcore_dev->rst_reg, 0x1);
     /*reset pcore*/
     mw_ip_write32(MWDEV_TO_MWIP(mwdev), 0x8, usrbuf->counter);
     buf = MWDEV_TO_MWIP(mwdev)->dma_info.virt;