diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index 586b46d64..fb67ba8f4 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -1202,11 +1202,24 @@ bool PipelineHandlerRkISP1::match(DeviceEnumerator *enumerator)
 	if (param_->open() < 0)
 		return false;
 
+	/*
+	 * Retrieve ISP maximum input size for config validation in the path
+	 * classes
+	 */
+	Size ispMaxInSize = { 0, 0 };
+	V4L2Subdevice::Formats ispFormats = isp_->formats(0);
+	for (const auto &[mbus, sizes] : ispFormats) {
+		for (const auto &size : sizes) {
+			if (ispMaxInSize < size.max)
+				ispMaxInSize = size.max;
+		}
+	}
+
 	/* Locate and open the ISP main and self paths. */
-	if (!mainPath_.init(media_))
+	if (!mainPath_.init(media_, ispMaxInSize))
 		return false;
 
-	if (hasSelfPath_ && !selfPath_.init(media_))
+	if (hasSelfPath_ && !selfPath_.init(media_, ispMaxInSize))
 		return false;
 
 	mainPath_.bufferReady().connect(this, &PipelineHandlerRkISP1::bufferReady);
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
index b62b645ca..eaab7e857 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.cpp
@@ -62,7 +62,7 @@ RkISP1Path::RkISP1Path(const char *name, const Span<const PixelFormat> &formats,
 {
 }
 
-bool RkISP1Path::init(MediaDevice *media)
+bool RkISP1Path::init(MediaDevice *media, const Size &ispMaxInSize)
 {
 	std::string resizer = std::string("rkisp1_resizer_") + name_ + "path";
 	std::string video = std::string("rkisp1_") + name_ + "path";
@@ -76,6 +76,7 @@ bool RkISP1Path::init(MediaDevice *media)
 		return false;
 
 	populateFormats();
+	ispMaxInSize_ = ispMaxInSize;
 
 	link_ = media->link("rkisp1_isp", 2, resizer, 0);
 	if (!link_)
@@ -172,7 +173,9 @@ RkISP1Path::generateConfiguration(const CameraSensor *sensor, const Size &size,
 		/* Add all the RAW sizes the sensor can produce for this code. */
 		for (const auto &rawSize : sensor->sizes(mbusCode)) {
 			if (rawSize.width > maxResolution_.width ||
-			    rawSize.height > maxResolution_.height)
+			    rawSize.height > maxResolution_.height ||
+			    rawSize.width > ispMaxInSize_.width ||
+			    rawSize.height > ispMaxInSize_.height)
 				continue;
 
 			streamFormats[format].push_back({ rawSize, rawSize });
@@ -275,8 +278,9 @@ CameraConfiguration::Status RkISP1Path::validate(const CameraSensor *sensor,
 	if (!found)
 		cfg->pixelFormat = isRaw ? rawFormat : formats::NV12;
 
-	Size minResolution;
-	Size maxResolution;
+	Size maxResolution = maxResolution_.boundedToAspectRatio(resolution)
+					   .boundedTo(resolution);
+	Size minResolution = minResolution_.expandedToAspectRatio(resolution);
 
 	if (isRaw) {
 		/*
@@ -287,16 +291,10 @@ CameraConfiguration::Status RkISP1Path::validate(const CameraSensor *sensor,
 		V4L2SubdeviceFormat sensorFormat =
 			sensor->getFormat({ mbusCode }, cfg->size);
 
-		minResolution = sensorFormat.size;
-		maxResolution = sensorFormat.size;
-	} else {
-		/*
-		 * Adjust the size based on the sensor resolution and absolute
-		 * limits of the ISP.
-		 */
-		minResolution = minResolution_.expandedToAspectRatio(resolution);
-		maxResolution = maxResolution_.boundedToAspectRatio(resolution)
-					      .boundedTo(resolution);
+		if (!sensorFormat.size.isNull()) {
+			minResolution = sensorFormat.size.boundedTo(ispMaxInSize_);
+			maxResolution = sensorFormat.size.boundedTo(ispMaxInSize_);
+		}
 	}
 
 	cfg->size.boundTo(maxResolution);
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1_path.h b/src/libcamera/pipeline/rkisp1/rkisp1_path.h
index cd77957ee..c96bd5557 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1_path.h
+++ b/src/libcamera/pipeline/rkisp1/rkisp1_path.h
@@ -35,7 +35,7 @@ public:
 	RkISP1Path(const char *name, const Span<const PixelFormat> &formats,
 		   const Size &minResolution, const Size &maxResolution);
 
-	bool init(MediaDevice *media);
+	bool init(MediaDevice *media, const Size &ispMaxInSize);
 
 	int setEnabled(bool enable) { return link_->setEnabled(enable); }
 	bool isEnabled() const { return link_->flags() & MEDIA_LNK_FL_ENABLED; }
@@ -77,6 +77,8 @@ private:
 	std::unique_ptr<V4L2Subdevice> resizer_;
 	std::unique_ptr<V4L2VideoDevice> video_;
 	MediaLink *link_;
+
+	Size ispMaxInSize_;
 };
 
 class RkISP1MainPath : public RkISP1Path