diff --git a/include/libcamera/ipa/rkisp1.mojom b/include/libcamera/ipa/rkisp1.mojom
index 95fa0d93..b097fc8f 100644
--- a/include/libcamera/ipa/rkisp1.mojom
+++ b/include/libcamera/ipa/rkisp1.mojom
@@ -29,7 +29,7 @@ interface IPARkISP1Interface {
 	start() => (int32 ret);
 	stop();
 
-	configure(CameraSensorInfo sensorInfo,
+	configure(uint32 hwRevision, CameraSensorInfo sensorInfo,
 		  map<uint32, IPAStream> streamConfig,
 		  map<uint32, ControlInfoMap> entityControls) => (int32 ret);
 
diff --git a/include/linux/rkisp1-config.h b/include/linux/rkisp1-config.h
index 9c24867d..3bccccbc 100644
--- a/include/linux/rkisp1-config.h
+++ b/include/linux/rkisp1-config.h
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: (GPL-2.0+ OR MIT) */
+/* SPDX-License-Identifier: ((GPL-2.0+ WITH Linux-syscall-note) OR MIT) */
 /*
  * Rockchip ISP1 userspace API
  * Copyright (C) 2017 Rockchip Electronics Co., Ltd.
@@ -53,8 +53,14 @@
 #define RKISP1_CIF_ISP_CTK_COEFF_MAX            0x100
 #define RKISP1_CIF_ISP_CTK_OFFSET_MAX           0x800
 
-#define RKISP1_CIF_ISP_AE_MEAN_MAX              25
-#define RKISP1_CIF_ISP_HIST_BIN_N_MAX           16
+#define RKISP1_CIF_ISP_AE_MEAN_MAX_V10		25
+#define RKISP1_CIF_ISP_AE_MEAN_MAX_V12		81
+#define RKISP1_CIF_ISP_AE_MEAN_MAX		RKISP1_CIF_ISP_AE_MEAN_MAX_V12
+
+#define RKISP1_CIF_ISP_HIST_BIN_N_MAX_V10	16
+#define RKISP1_CIF_ISP_HIST_BIN_N_MAX_V12	32
+#define RKISP1_CIF_ISP_HIST_BIN_N_MAX		RKISP1_CIF_ISP_HIST_BIN_N_MAX_V12
+
 #define RKISP1_CIF_ISP_AFM_MAX_WINDOWS          3
 #define RKISP1_CIF_ISP_DEGAMMA_CURVE_SIZE       17
 
@@ -90,7 +96,9 @@
  * Gamma out
  */
 /* Maximum number of color samples supported */
-#define RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES       17
+#define RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES_V10   17
+#define RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES_V12   34
+#define RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES       RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES_V12
 
 /*
  * Lens shade correction
@@ -106,8 +114,9 @@
 /*
  * Histogram calculation
  */
-/* Last 3 values unused. */
-#define RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE 28
+#define RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE_V10 25
+#define RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE_V12 81
+#define RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE     RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE_V12
 
 /*
  * Defect Pixel Cluster Correction
@@ -128,6 +137,21 @@
 #define RKISP1_CIF_ISP_STAT_AFM           (1U << 2)
 #define RKISP1_CIF_ISP_STAT_HIST          (1U << 3)
 
+/**
+ * enum rkisp1_cif_isp_version - ISP variants
+ *
+ * @RKISP1_V10: used at least in rk3288 and rk3399
+ * @RKISP1_V11: declared in the original vendor code, but not used
+ * @RKISP1_V12: used at least in rk3326 and px30
+ * @RKISP1_V13: used at least in rk1808
+ */
+enum rkisp1_cif_isp_version {
+	RKISP1_V10 = 10,
+	RKISP1_V11,
+	RKISP1_V12,
+	RKISP1_V13,
+};
+
 enum rkisp1_cif_isp_histogram_mode {
 	RKISP1_CIF_ISP_HISTOGRAM_MODE_DISABLE,
 	RKISP1_CIF_ISP_HISTOGRAM_MODE_RGB_COMBINED,
@@ -514,6 +538,15 @@ enum rkisp1_cif_isp_goc_mode {
  *
  * @mode: goc mode (from enum rkisp1_cif_isp_goc_mode)
  * @gamma_y: gamma out curve y-axis for all color components
+ *
+ * The number of entries of @gamma_y depends on the hardware revision
+ * as is reported by the hw_revision field of the struct media_device_info
+ * that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
+ *
+ * Versions <= V11 have RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES_V10
+ * entries, versions >= V12 have RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES_V12
+ * entries. RKISP1_CIF_ISP_GAMMA_OUT_MAX_SAMPLES is equal to the maximum
+ * of the two.
  */
 struct rkisp1_cif_isp_goc_config {
 	__u32 mode;
@@ -528,6 +561,15 @@ struct rkisp1_cif_isp_goc_config {
  *			  skipped
  * @meas_window: coordinates of the measure window
  * @hist_weight: weighting factor for sub-windows
+ *
+ * The number of entries of @hist_weight depends on the hardware revision
+ * as is reported by the hw_revision field of the struct media_device_info
+ * that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
+ *
+ * Versions <= V11 have RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE_V10
+ * entries, versions >= V12 have RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE_V12
+ * entries. RKISP1_CIF_ISP_HISTOGRAM_WEIGHT_GRIDS_SIZE is equal to the maximum
+ * of the two.
  */
 struct rkisp1_cif_isp_hst_config {
 	__u32 mode;
@@ -815,7 +857,15 @@ struct rkisp1_cif_isp_bls_meas_val {
  * @exp_mean: Mean luminance value of block xx
  * @bls_val:  BLS measured values
  *
- * Image is divided into 5x5 blocks.
+ * The number of entries of @exp_mean depends on the hardware revision
+ * as is reported by the hw_revision field of the struct media_device_info
+ * that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
+ *
+ * Versions <= V11 have RKISP1_CIF_ISP_AE_MEAN_MAX_V10 entries,
+ * versions >= V12 have RKISP1_CIF_ISP_AE_MEAN_MAX_V12 entries.
+ * RKISP1_CIF_ISP_AE_MEAN_MAX is equal to the maximum of the two.
+ *
+ * Image is divided into 5x5 blocks on V10 and 9x9 blocks on V12.
  */
 struct rkisp1_cif_isp_ae_stat {
 	__u8 exp_mean[RKISP1_CIF_ISP_AE_MEAN_MAX];
@@ -848,13 +898,29 @@ struct rkisp1_cif_isp_af_stat {
 /**
  * struct rkisp1_cif_isp_hist_stat - statistics histogram data
  *
- * @hist_bins: measured bin counters
+ * @hist_bins: measured bin counters. Each bin is a 20 bits unsigned fixed point
+ *	       type. Bits 0-4 are the fractional part and bits 5-19 are the
+ *	       integer part.
+ *
+ * The window of the measurements area is divided to 5x5 sub-windows for
+ * V10/V11 and to 9x9 sub-windows for V12. The histogram is then computed for
+ * each sub-window independently and the final result is a weighted average of
+ * the histogram measurements on all sub-windows. The window of the
+ * measurements area and the weight of each sub-window are configurable using
+ * struct @rkisp1_cif_isp_hst_config.
+ *
+ * The histogram contains 16 bins in V10/V11 and 32 bins in V12/V13.
+ *
+ * The number of entries of @hist_bins depends on the hardware revision
+ * as is reported by the hw_revision field of the struct media_device_info
+ * that is returned by ioctl MEDIA_IOC_DEVICE_INFO.
  *
- * Measurement window divided into 25 sub-windows, set
- * with ISP_HIST_XXX
+ * Versions <= V11 have RKISP1_CIF_ISP_HIST_BIN_N_MAX_V10 entries,
+ * versions >= V12 have RKISP1_CIF_ISP_HIST_BIN_N_MAX_V12 entries.
+ * RKISP1_CIF_ISP_HIST_BIN_N_MAX is equal to the maximum of the two.
  */
 struct rkisp1_cif_isp_hist_stat {
-	__u16 hist_bins[RKISP1_CIF_ISP_HIST_BIN_N_MAX];
+	__u32 hist_bins[RKISP1_CIF_ISP_HIST_BIN_N_MAX];
 };
 
 /**
diff --git a/src/ipa/rkisp1/rkisp1.cpp b/src/ipa/rkisp1/rkisp1.cpp
index b0641faf..a3ba3dcd 100644
--- a/src/ipa/rkisp1/rkisp1.cpp
+++ b/src/ipa/rkisp1/rkisp1.cpp
@@ -38,7 +38,7 @@ public:
 	int start() override { return 0; }
 	void stop() override {}
 
-	int configure(const CameraSensorInfo &info,
+	int configure(uint32_t hwRevision, const CameraSensorInfo &info,
 		       const std::map<uint32_t, IPAStream> &streamConfig,
 		       const std::map<uint32_t, ControlInfoMap> &entityControls) override;
 	void mapBuffers(const std::vector<IPABuffer> &buffers) override;
@@ -75,10 +75,17 @@ private:
  * assemble one. Make sure the reported sensor information are relevant
  * before accessing them.
  */
-int IPARkISP1::configure([[maybe_unused]] const CameraSensorInfo &info,
+int IPARkISP1::configure(uint32_t hwRevision, [[maybe_unused]] const CameraSensorInfo &info,
 			  [[maybe_unused]] const std::map<uint32_t, IPAStream> &streamConfig,
 			  const std::map<uint32_t, ControlInfoMap> &entityControls)
 {
+	/* \todo add support to other revisions */
+	if (hwRevision != RKISP1_V10) {
+		LOG(IPARkISP1, Error) << "Hardware version " << hwRevision << " is currently"
+				      << " not supported";
+		return -1;
+	}
+
 	if (entityControls.empty())
 		return -1;
 
@@ -107,7 +114,8 @@ int IPARkISP1::configure([[maybe_unused]] const CameraSensorInfo &info,
 	gain_ = minGain_;
 
 	LOG(IPARkISP1, Info)
-		<< "Exposure: " << minExposure_ << "-" << maxExposure_
+		<< "Hw Revision: " hwRevision <<
+		<< " Exposure: " << minExposure_ << "-" << maxExposure_
 		<< " Gain: " << minGain_ << "-" << maxGain_;
 
 	setControls(0);
@@ -217,7 +225,7 @@ void IPARkISP1::updateStatistics(unsigned int frame,
 
 		unsigned int value = 0;
 		unsigned int num = 0;
-		for (int i = 0; i < RKISP1_CIF_ISP_AE_MEAN_MAX; i++) {
+		for (int i = 0; i < RKISP1_CIF_ISP_AE_MEAN_MAX_V10; i++) {
 			if (ae->exp_mean[i] <= 15)
 				continue;
 
diff --git a/src/libcamera/pipeline/rkisp1/rkisp1.cpp b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
index dad8e5d4..32158519 100644
--- a/src/libcamera/pipeline/rkisp1/rkisp1.cpp
+++ b/src/libcamera/pipeline/rkisp1/rkisp1.cpp
@@ -653,7 +653,8 @@ int PipelineHandlerRkISP1::configure(Camera *camera, CameraConfiguration *c)
 	std::map<uint32_t, ControlInfoMap> entityControls;
 	entityControls.emplace(0, data->sensor_->controls());
 
-	ret = data->ipa_->configure(sensorInfo, streamConfig, entityControls);
+	ret = data->ipa_->configure(media_->hwRevision(), sensorInfo,
+				    streamConfig, entityControls);
 	if (ret) {
 		LOG(RkISP1, Error) << "failed configuring IPA (" << ret << ")";
 		return ret;
