Arm backend: Add experimental support for TOSA 1.1 serialiasation

Note: In order to serialize to TOSA 1.1 the main branch of the
      tosa-tools needs to be installed.

Signed-off-by: Per Åstrand <per.astrand@arm.com>
Change-Id: I112a101c8a92c9d9bae3df9099d88faf0916b597

Author: per

backends/arm/operators/op_abs.py

@@ -17,19 +17,13 @@
     validate_valid_dtype,
 )
 from executorch.backends.arm.tosa.mapping import TosaArg
-from executorch.backends.arm.tosa.specification import TosaSpecification
 from torch.fx import Node
 
 
 @register_node_visitor
 class AbsVisitor(NodeVisitor):
     target = "aten.abs.default"
 
-    tosa_specs = [
-        TosaSpecification.create_from_string("TOSA-1.0+INT"),
-        TosaSpecification.create_from_string("TOSA-1.0+FP"),
-    ]
-
     def define_node(
         self,
         node: Node,

backends/arm/operators/op_add.py

@@ -25,8 +25,6 @@
 class AddVisitor(NodeVisitor):
     target = "aten.add.Tensor"
 
-    tosa_specs = NodeVisitor.tosa_specs
-
     def define_node(
         self,
         node: Node,

backends/arm/operators/op_amax.py

@@ -24,8 +24,6 @@
 class MaxVisitor(NodeVisitor):
     target = "aten.amax.default"
 
-    tosa_specs = NodeVisitor.tosa_specs
-
     def __init__(self, *args):
         super().__init__(*args)
 

backends/arm/operators/op_amin.py

@@ -24,8 +24,6 @@
 class MinVisitor(NodeVisitor):
     target = "aten.amin.default"
 
-    tosa_specs = NodeVisitor.tosa_specs
-
     def __init__(self, *args):
         super().__init__(*args)
 

backends/arm/operators/op_any.py

@@ -25,8 +25,6 @@
 class AnyVisitor(NodeVisitor):
     target = "aten.any.dim"
 
-    tosa_specs = NodeVisitor.tosa_specs
-
     def define_node(
         self,
         node: Node,

backends/arm/operators/op_avg_pool2d.py

@@ -23,19 +23,13 @@
     validate_same_dtype,
     validate_valid_dtype,
 )
-from executorch.backends.arm.tosa import TosaSpecification
 from executorch.backends.arm.tosa.mapping import TosaArg
 
 
 @register_node_visitor
 class AvgPool2dVisitor(NodeVisitor):
     target = "aten.avg_pool2d.default"
 
-    tosa_specs = [
-        TosaSpecification.create_from_string("TOSA-1.0+INT"),
-        TosaSpecification.create_from_string("TOSA-1.0+FP"),
-    ]
-
     def __init__(self, *args):
         super().__init__(*args)
 

backends/arm/operators/op_cat.py

@@ -25,8 +25,6 @@
 class CatVisitor(NodeVisitor):
     target = "aten.cat.default"
 
-    tosa_specs = NodeVisitor.tosa_specs
-
     def __init__(self, *args):
         super().__init__(*args)
 

backends/arm/operators/op_clamp.py

@@ -18,7 +18,6 @@
     validate_same_dtype,
     validate_valid_dtype,
 )
-from executorch.backends.arm.tosa import TosaSpecification
 
 from executorch.backends.arm.tosa.mapping import TosaArg
 from torch.fx import Node
@@ -28,11 +27,6 @@
 class ClampVisitor(NodeVisitor):
     target = "aten.clamp.default"
 
-    tosa_specs = [
-        TosaSpecification.create_from_string("TOSA-1.0+INT"),
-        TosaSpecification.create_from_string("TOSA-1.0+FP"),
-    ]
-
     def __init__(self, *args):
         super().__init__(*args)
 

backends/arm/operators/op_cond_if.py

@@ -1,4 +1,4 @@
-# Copyright 2025 Arm Limited and/or its affiliates.
+# Copyright 2025-2026 Arm Limited and/or its affiliates.
 #
 # This source code is licensed under the BSD-style license found in the
 # LICENSE file in the root directory of this source tree.
@@ -25,8 +25,6 @@
 class CondVisitor(NodeVisitor):
     target = "cond"
 
-    tosa_specs = NodeVisitor.tosa_specs
-
     def define_node(
         self,
         node: Node,

backends/arm/operators/op_constant_pad_nd.py

@@ -22,7 +22,6 @@
     validate_same_dtype,
     validate_valid_dtype,
 )
-from executorch.backends.arm.tosa import TosaSpecification
 from executorch.backends.arm.tosa.mapping import TosaArg
 
 
@@ -31,11 +30,6 @@ class ConstantPadNDVisitor(NodeVisitor):
 
     target = "aten.constant_pad_nd.default"
 
-    tosa_specs = [
-        TosaSpecification.create_from_string("TOSA-1.0+INT"),
-        TosaSpecification.create_from_string("TOSA-1.0+FP"),
-    ]
-
     def define_node(
         self,
         node: torch.fx.Node,