diff --git a/src/gallium/drivers/ethosu/ethosu_cmd.c b/src/gallium/drivers/ethosu/ethosu_cmd.c
index 429162a36e4..72b730cfd8f 100644
--- a/src/gallium/drivers/ethosu/ethosu_cmd.c
+++ b/src/gallium/drivers/ethosu/ethosu_cmd.c
@@ -133,6 +133,8 @@ emit_ifm_precision(struct ethosu_subgraph *subgraph,
    if (tensor->layout == ETHOSU_LAYOUT_NHCWB16)
       prec |= NPU_SET_IFM_PRECISION_FORMAT(1);
 
+   prec |= NPU_SET_IFM_PRECISION_PRECISION(feature_map->precision);
+
    if (feature_map->is_signed)
       prec |= NPU_SET_IFM_PRECISION_ACTIVATION(1); // signed activation
 
@@ -179,6 +181,8 @@ emit_ofm_precision(struct ethosu_subgraph *subgraph, struct ethosu_operation *op
    if (tensor->layout == ETHOSU_LAYOUT_NHCWB16)
       prec |= NPU_SET_OFM_PRECISION_FORMAT(1);
 
+   prec |= NPU_SET_OFM_PRECISION_PRECISION(operation->ofm.precision);
+
    if (operation->ofm.is_signed)
       prec |= NPU_SET_OFM_PRECISION_ACTIVATION(1);
 
diff --git a/src/gallium/drivers/ethosu/ethosu_lower.c b/src/gallium/drivers/ethosu/ethosu_lower.c
index a69a61ecca8..1b981013c29 100644
--- a/src/gallium/drivers/ethosu/ethosu_lower.c
+++ b/src/gallium/drivers/ethosu/ethosu_lower.c
@@ -62,6 +62,7 @@ set_feature_maps(struct pipe_tensor *input_tensor,
    operation->ifm.zero_point = input_tensor->zero_point;
    operation->ifm.scale = input_tensor->scale;
    operation->ifm.is_signed = input_tensor->is_signed;
+   operation->ifm.precision = log2(input_tensor->type_size);
 
    operation->ofm.tensor_idx = output_tensor->index;
    operation->ofm.shape.height = output_tensor->dims[1];
@@ -70,6 +71,7 @@ set_feature_maps(struct pipe_tensor *input_tensor,
    operation->ofm.zero_point = output_tensor->zero_point;
    operation->ofm.scale = output_tensor->scale;
    operation->ofm.is_signed = output_tensor->is_signed;
+   operation->ofm.precision = log2(output_tensor->type_size);
 }
 
 static const struct pipe_ml_operation *
@@ -334,6 +336,7 @@ ethosu_lower_add(struct ethosu_subgraph *subgraph,
    operation->ifm2.zero_point = poperation->input_tensors[1]->zero_point;
    operation->ifm2.scale = poperation->input_tensors[1]->scale;
    operation->ifm2.is_signed = poperation->input_tensors[1]->is_signed;
+   operation->ifm2.precision = log2(poperation->input_tensors[1]->type_size);
 
    operation->kernel.height = 1;
    operation->kernel.width = 1;
@@ -480,4 +483,4 @@ ethosu_lower_graph(struct ethosu_subgraph *subgraph,
          UNREACHABLE("Unsupported ML operation type");
       }
    }
-}
\ No newline at end of file
+}
diff --git a/src/gallium/drivers/ethosu/ethosu_ml.c b/src/gallium/drivers/ethosu/ethosu_ml.c
index efab4ad744d..aa8ceb25e8f 100644
--- a/src/gallium/drivers/ethosu/ethosu_ml.c
+++ b/src/gallium/drivers/ethosu/ethosu_ml.c
@@ -57,6 +57,7 @@ ethosu_register_tensor(struct ethosu_subgraph *subgraph,
    new_tensor.shape.width = ptensor->dims[2];
    new_tensor.shape.depth = ptensor->dims[3];
    new_tensor.layout = ETHOSU_LAYOUT_NHWC;
+   new_tensor.type_size = ptensor->type_size;
    util_dynarray_append(&subgraph->tensors, new_tensor);
 }
 
@@ -74,6 +75,7 @@ ethosu_allocate_feature_map(struct ethosu_subgraph *subgraph, struct ethosu_feat
       assert(0 && "Unsupported layout");
       size = 0; // This should never happen
    }
+   size *= tensor->type_size;
 
    assert(tensor);
 
@@ -143,6 +145,10 @@ ethosu_ml_operation_supported(struct pipe_context *pcontext,
 {
    bool supported = false;
 
+   if (operation->input_tensors[0]->type_size == 4 ||
+       operation->output_tensors[0]->type_size == 4)
+      return false;
+
    switch (operation->type) {
    case PIPE_ML_OPERATION_TYPE_CONVOLUTION: {
       /*
diff --git a/src/gallium/drivers/ethosu/ethosu_ml.h b/src/gallium/drivers/ethosu/ethosu_ml.h
index d275b6140b2..00283847679 100644
--- a/src/gallium/drivers/ethosu/ethosu_ml.h
+++ b/src/gallium/drivers/ethosu/ethosu_ml.h
@@ -73,6 +73,7 @@ struct ethosu_feature_map {
    unsigned tensor_idx;
    struct ethosu_block shape;
    bool is_signed;
+   uint8_t precision;
    struct ethosu_tile_box tiles;
    unsigned zero_point;
    float scale;
@@ -176,6 +177,7 @@ struct ethosu_tensor {
    unsigned index;
    unsigned offset;
    unsigned size;
+   uint8_t type_size;
    struct ethosu_block shape;
    enum ethosu_layout layout;
 };