From 91e0f4c2a3f324ff235219f3780c0c87af2766c2 Mon Sep 17 00:00:00 2001
From: Christoph Pillmayer <christoph.pillmayer@arm.com>
Date: Thu, 16 Apr 2026 12:47:50 +0200
Subject: [PATCH] pan: Add BUS_WIDTH query to pan_props

---
 src/panfrost/lib/pan_props.c | 7 +++++++
 src/panfrost/lib/pan_props.h | 2 ++
 2 files changed, 9 insertions(+)

diff --git a/src/panfrost/lib/pan_props.c b/src/panfrost/lib/pan_props.c
index 056bd48d4a2..26babd143a1 100644
--- a/src/panfrost/lib/pan_props.c
+++ b/src/panfrost/lib/pan_props.c
@@ -17,6 +17,13 @@ pan_query_l2_slices(const struct pan_kmod_dev_props *props)
    return ((props->mem_features >> 8) & 0xF) + 1;
 }
 
+unsigned
+pan_query_bus_width(const struct pan_kmod_dev_props *props)
+{
+   /* BUS_WIDTH is L2_FEATURES[31:24] log2 */
+   return 1 << ((props->l2_features >> 24) & 0xF);
+}
+
 struct pan_tiler_features
 pan_query_tiler_features(const struct pan_kmod_dev_props *props)
 {
diff --git a/src/panfrost/lib/pan_props.h b/src/panfrost/lib/pan_props.h
index 19d3b749735..cebf5616028 100644
--- a/src/panfrost/lib/pan_props.h
+++ b/src/panfrost/lib/pan_props.h
@@ -21,6 +21,8 @@ struct pan_kmod_vm;
 
 unsigned pan_query_l2_slices(const struct pan_kmod_dev_props *props);
 
+unsigned pan_query_bus_width(const struct pan_kmod_dev_props *props);
+
 struct pan_tiler_features
 pan_query_tiler_features(const struct pan_kmod_dev_props *props);