boards: waveshare: rp2040_plus: add 16M flash variant

This board is available with 4MB and 16MB flash.

Signed-off-by: David Schneider <[email protected]>

Author: dsch

boards/waveshare/rp2040_plus/board.yml

@@ -4,3 +4,5 @@ board:
   vendor: waveshare
   socs:
   - name: rp2040
+  revision:
+    format: custom

boards/waveshare/rp2040_plus/revision.cmake

@@ -0,0 +1,8 @@
+set(BOARD_REVISIONS "4M" "16M")
+if(NOT DEFINED BOARD_REVISION)
+  set(BOARD_REVISION "4M")
+else()
+  if(NOT BOARD_REVISION IN_LIST BOARD_REVISIONS)
+    message(FATAL_ERROR "${BOARD_REVISION} is not a valid revision for rp2040_plus. Accepted revisions: ${BOARD_REVISIONS}")
+  endif()
+endif()

boards/waveshare/rp2040_plus/rp2040_plus.dts

@@ -86,8 +86,6 @@
 };
 
 &flash0 {
-	reg = <0x10000000 DT_SIZE_M(4)>;
-
 	partitions {
 		compatible = "fixed-partitions";
 		#address-cells = <1>;

boards/waveshare/rp2040_plus/rp2040_plus_16M.overlay

@@ -0,0 +1,3 @@
+&flash0 {
+	reg = <0x10000000 DT_SIZE_M(16)>;
+};

boards/waveshare/rp2040_plus/rp2040_plus_4M.overlay

@@ -0,0 +1,3 @@
+&flash0 {
+	reg = <0x10000000 DT_SIZE_M(4)>;
+};