diff --git a/Documentation/runtime_configuration.rst b/Documentation/runtime_configuration.rst
index bad0297c..ea5bd55e 100644
--- a/Documentation/runtime_configuration.rst
+++ b/Documentation/runtime_configuration.rst
@@ -46,6 +46,8 @@ file structure:
         supported_devices:
           - driver: # driver name, e.g. `mxc-isi`
             software_isp: # true/false
+    software_isp:
+      copy_input_buffer: # true/false
 
 Configuration file example
 --------------------------
@@ -74,6 +76,8 @@ Configuration file example
          supported_devices:
            - driver: mxc-isi
              software_isp: true
+     software_isp:
+       copy_input_buffer: false
 
 List of variables and configuration options
 -------------------------------------------
@@ -136,6 +140,15 @@ pipelines.simple.supported_devices.driver, pipelines.simple.supported_devices.so
 
    Example `software_isp` value: ``true``
 
+software_isp.copy_input_buffer
+   Define whether input buffers should be copied into standard (cached)
+   memory in software ISP. This is done by default to prevent very slow
+   processing on platforms with non-cached buffers. It can be set to
+   false on platforms with cached buffers to avoid an unnecessary
+   overhead.
+
+   Example value: ``false``
+
 Further details
 ---------------
 
diff --git a/src/libcamera/software_isp/TODO b/src/libcamera/software_isp/TODO
index a50db668..2c919f44 100644
--- a/src/libcamera/software_isp/TODO
+++ b/src/libcamera/software_isp/TODO
@@ -71,17 +71,6 @@ per-frame buffers like we do for hardware ISPs.
 
 ---
 
-6. Input buffer copying configuration
-
-> DebayerCpu::DebayerCpu(std::unique_ptr<SwStatsCpu> stats)
-> 	: stats_(std::move(stats)), gammaCorrection_(1.0)
-> {
-> 	enableInputMemcpy_ = true;
-
-Set this appropriately and/or make it configurable.
-
----
-
 7. Performance measurement configuration
 
 > void DebayerCpu::process(FrameBuffer *input, FrameBuffer *output, DebayerParams params)
diff --git a/src/libcamera/software_isp/debayer_cpu.cpp b/src/libcamera/software_isp/debayer_cpu.cpp
index 66f6038c..a5f915b6 100644
--- a/src/libcamera/software_isp/debayer_cpu.cpp
+++ b/src/libcamera/software_isp/debayer_cpu.cpp
@@ -24,6 +24,7 @@
 #include "libcamera/internal/bayer_format.h"
 #include "libcamera/internal/dma_buf_allocator.h"
 #include "libcamera/internal/framebuffer.h"
+#include "libcamera/internal/global_configuration.h"
 #include "libcamera/internal/mapped_framebuffer.h"
 
 namespace libcamera {
@@ -38,8 +39,9 @@ namespace libcamera {
 /**
  * \brief Constructs a DebayerCpu object
  * \param[in] stats Pointer to the stats object to use
+ * \param[in] configuration The global configuration
  */
-DebayerCpu::DebayerCpu(std::unique_ptr<SwStatsCpu> stats)
+DebayerCpu::DebayerCpu(std::unique_ptr<SwStatsCpu> stats, const GlobalConfiguration &configuration)
 	: stats_(std::move(stats))
 {
 	/*
@@ -49,8 +51,12 @@ DebayerCpu::DebayerCpu(std::unique_ptr<SwStatsCpu> stats)
 	 * enable_input_memcpy_ makes this behavior configurable.  At the moment, we
 	 * always set it to true as the safer choice but this should be changed in
 	 * future.
+	 *
+	 * \todo Make memcpy automatic based on runtime detection of platform
+	 * capabilities.
 	 */
-	enableInputMemcpy_ = true;
+	enableInputMemcpy_ =
+		configuration.option<bool>({ "software_isp", "copy_input_buffer" }).value_or(true);
 
 	/* Initialize color lookup tables */
 	for (unsigned int i = 0; i < DebayerParams::kRGBLookupSize; i++) {
diff --git a/src/libcamera/software_isp/debayer_cpu.h b/src/libcamera/software_isp/debayer_cpu.h
index 926195e9..2f35aa18 100644
--- a/src/libcamera/software_isp/debayer_cpu.h
+++ b/src/libcamera/software_isp/debayer_cpu.h
@@ -18,6 +18,7 @@
 #include <libcamera/base/object.h>
 
 #include "libcamera/internal/bayer_format.h"
+#include "libcamera/internal/global_configuration.h"
 
 #include "debayer.h"
 #include "swstats_cpu.h"
@@ -27,7 +28,7 @@ namespace libcamera {
 class DebayerCpu : public Debayer, public Object
 {
 public:
-	DebayerCpu(std::unique_ptr<SwStatsCpu> stats);
+	DebayerCpu(std::unique_ptr<SwStatsCpu> stats, const GlobalConfiguration &configuration);
 	~DebayerCpu();
 
 	int configure(const StreamConfiguration &inputCfg,
diff --git a/src/libcamera/software_isp/software_isp.cpp b/src/libcamera/software_isp/software_isp.cpp
index 28e2a360..b7651b7d 100644
--- a/src/libcamera/software_isp/software_isp.cpp
+++ b/src/libcamera/software_isp/software_isp.cpp
@@ -114,7 +114,8 @@ SoftwareIsp::SoftwareIsp(PipelineHandler *pipe, const CameraSensor *sensor,
 	}
 	stats->statsReady.connect(this, &SoftwareIsp::statsReady);
 
-	debayer_ = std::make_unique<DebayerCpu>(std::move(stats));
+	const GlobalConfiguration &configuration = pipe->cameraManager()->_d()->configuration();
+	debayer_ = std::make_unique<DebayerCpu>(std::move(stats), configuration);
 	debayer_->inputBufferReady.connect(this, &SoftwareIsp::inputReady);
 	debayer_->outputBufferReady.connect(this, &SoftwareIsp::outputReady);