diff --git a/drivers/misc/rk628/rk628.c b/drivers/misc/rk628/rk628.c
index 2b9d725ec028..c647a733607a 100644
--- a/drivers/misc/rk628/rk628.c
+++ b/drivers/misc/rk628/rk628.c
@@ -1225,6 +1225,7 @@ static void rk628_debugfs_create(struct rk628 *rk628)
 	debugfs_create_file("summary", 0400, rk628->debug_dir, rk628,
 			    &rk628_debugfs_summary_fops);
 
+	rk628_rgb_decoder_create_debugfs_file(rk628);
 	rk628_post_process_create_debugfs_file(rk628);
 	rk628_mipi_dsi_create_debugfs_file(rk628);
 	rk628_gvi_create_debugfs_file(rk628);
diff --git a/drivers/misc/rk628/rk628.h b/drivers/misc/rk628/rk628.h
index a9f8a3e152ca..4f2df6565c22 100644
--- a/drivers/misc/rk628/rk628.h
+++ b/drivers/misc/rk628/rk628.h
@@ -210,11 +210,23 @@
 /* 0: i2c mode and mcu mode; 1: i2c mode only */
 #define I2C_ONLY_FLAG			BIT(6)
 #define GRF_SYSTEM_STATUS3		0x012c
+#define DECODER_1120_LAST_LINE_NUM_MASK	GENMASK(12, 0)
 #define GRF_SYSTEM_STATUS4		0x0130
+#define DECODER_1120_LAST_PIX_NUM_MASK	GENMASK(12, 0)
 #define GRF_OS_REG0			0x0140
 #define GRF_OS_REG1			0x0144
 #define GRF_OS_REG2			0x0148
 #define GRF_OS_REG3			0x014c
+#define GRF_RGB_RX_DBG_MEAS0		0x0170
+#define RGB_RX_EVAL_TIME_MASK		GENMASK(27, 16)
+#define RGB_RX_MODET_EN			BIT(1)
+#define RGB_RX_DCLK_EN			BIT(0)
+#define GRF_RGB_RX_DBG_MEAS2		0x0178
+#define RGB_RX_CLKRATE_MASK		GENMASK(15, 0)
+#define GRF_RGB_RX_DBG_MEAS3		0x017c
+#define RGB_RX_CNT_EN_MASK		BIT(0)
+#define RGB_RX_CNT_EN(x)		UPDATE(x, 0, 0)
+#define GRF_RGB_RX_DBG_MEAS4		0x0180
 #define GRF_BT1120_TIMING_CTRL0		0x0190
 #define BT1120_DSP_HS_END(x)		UPDATE(x, 28, 16)
 #define BT1120_DSP_HTOTAL(x)		UPDATE(x, 12, 0)
diff --git a/drivers/misc/rk628/rk628_cru.c b/drivers/misc/rk628/rk628_cru.c
index 31dc2d08e35a..da448508ed28 100644
--- a/drivers/misc/rk628/rk628_cru.c
+++ b/drivers/misc/rk628/rk628_cru.c
@@ -297,6 +297,26 @@ static unsigned long rk628_cru_clk_get_rate_sclk_vop(struct rk628 *rk628)
 	return rate;
 }
 
+static unsigned long rk628_cru_clk_get_rate_clk_imodet(struct rk628 *rk628)
+{
+	unsigned long rate, parent_rate, n;
+	u32 mux, div;
+
+	rk628_i2c_read(rk628, CRU_CLKSEL_CON05, &mux);
+	mux &= CLK_IMODET_SEL_MASK;
+	mux >>= CLK_IMODET_SEL_SHIFT;
+	if (mux == SCLK_VOP_SEL_GPLL)
+		parent_rate = rk628_cru_clk_get_rate_pll(rk628, CGU_CLK_GPLL);
+	else
+		parent_rate = rk628_cru_clk_get_rate_pll(rk628, CGU_CLK_CPLL);
+
+	rk628_i2c_read(rk628, CRU_CLKSEL_CON05, &div);
+	n = div & 0x1f;
+	rate = parent_rate / (n + 1);
+
+	return rate;
+}
+
 static unsigned long rk628_cru_clk_set_rate_rx_read(struct rk628 *rk628,
 						    unsigned long rate)
 {
@@ -435,6 +455,9 @@ unsigned long rk628_cru_clk_get_rate(struct rk628 *rk628, unsigned int id)
 	case CGU_SCLK_VOP:
 		rate = rk628_cru_clk_get_rate_sclk_vop(rk628);
 		break;
+	case CGU_CLK_IMODET:
+		rate = rk628_cru_clk_get_rate_clk_imodet(rk628);
+		break;
 	default:
 		return 0;
 	}
diff --git a/drivers/misc/rk628/rk628_cru.h b/drivers/misc/rk628/rk628_cru.h
index e13a559539de..0684d7c0d53c 100644
--- a/drivers/misc/rk628/rk628_cru.h
+++ b/drivers/misc/rk628/rk628_cru.h
@@ -74,6 +74,8 @@
 #define CRU_CLKSEL_CON03	CRU_REG(0x008c)
 #define CRU_CLKSEL_CON04	CRU_REG(0x0090)
 #define CRU_CLKSEL_CON05	CRU_REG(0x0094)
+#define CLK_IMODET_SEL_MASK	BIT(5)
+#define CLK_IMODET_SEL_SHIFT	5
 #define CRU_CLKSEL_CON06	CRU_REG(0x0098)
 #define SCLK_UART_SEL(x)	HIWORD_UPDATE(x, 15, 14)
 #define SCLK_UART_SEL_MASK	GENMASK(15, 14)
diff --git a/drivers/misc/rk628/rk628_rgb.c b/drivers/misc/rk628/rk628_rgb.c
index 65135089676c..0a89302ebc9b 100644
--- a/drivers/misc/rk628/rk628_rgb.c
+++ b/drivers/misc/rk628/rk628_rgb.c
@@ -5,6 +5,7 @@
  * Author: Guochun Huang <hero.huang@rock-chips.com>
  */
 
+#include <linux/debugfs.h>
 #include "rk628.h"
 #include "rk628_cru.h"
 #include "rk628_config.h"
@@ -15,12 +16,77 @@ int rk628_rgb_parse(struct rk628 *rk628, struct device_node *rgb_np)
 	return rk628_panel_info_get(rk628, rgb_np);
 }
 
+static int rk628_rgb_resolution_show(struct seq_file *s, void *data)
+{
+	struct rk628 *rk628 = s->private;
+	u16 width = 0, height = 0;
+	u32 rgb_rx_eval_time, rgb_rx_clkrate;
+	u64 ref_clk, pixel_clk;
+	u32 val;
+
+	rk628_i2c_read(rk628, GRF_RGB_RX_DBG_MEAS0, &val);
+	rgb_rx_eval_time = (val & RGB_RX_EVAL_TIME_MASK) >> 16;
+
+	rk628_i2c_read(rk628, GRF_RGB_RX_DBG_MEAS2, &val);
+	rgb_rx_clkrate = val & RGB_RX_CLKRATE_MASK;
+
+	ref_clk = rk628_cru_clk_get_rate(rk628, CGU_CLK_IMODET);
+	pixel_clk = ref_clk * rgb_rx_clkrate / (rgb_rx_eval_time + 1);
+
+	if (rk628_input_is_rgb(rk628)) {
+		rk628_i2c_read(rk628, GRF_RGB_RX_DBG_MEAS4, &val);
+		height = (val >> 16) & 0xffff;
+		width = val & 0xffff;
+	} else if (rk628_input_is_bt1120(rk628)) {
+		rk628_i2c_read(rk628, GRF_SYSTEM_STATUS3, &val);
+		height = val & DECODER_1120_LAST_LINE_NUM_MASK;
+
+		rk628_i2c_read(rk628, GRF_SYSTEM_STATUS4, &val);
+		width = val & DECODER_1120_LAST_PIX_NUM_MASK;
+	}
+
+	seq_printf(s, "%dx%d pclk:%llu\n", width, height, pixel_clk);
+
+	return 0;
+}
+
+static int rk628_rgb_resolution_open(struct inode *inode, struct file *file)
+{
+	return single_open(file, rk628_rgb_resolution_show, inode->i_private);
+}
+
+static const struct file_operations rk628_rgb_resolution_fops = {
+	.owner = THIS_MODULE,
+	.open = rk628_rgb_resolution_open,
+	.read = seq_read,
+	.llseek = seq_lseek,
+	.release = single_release,
+};
+
+void rk628_rgb_decoder_create_debugfs_file(struct rk628 *rk628)
+{
+	if (rk628->version == RK628D_VERSION)
+		return;
+
+	if (rk628_input_is_rgb(rk628) || rk628_input_is_bt1120(rk628))
+		debugfs_create_file("rgb_resolution", 0400, rk628->debug_dir,
+				    rk628, &rk628_rgb_resolution_fops);
+}
+
 void rk628_rgb_decoder_enable(struct rk628 *rk628)
 {
-		/* config sw_input_mode RGB */
+	/* config sw_input_mode RGB */
 	rk628_i2c_update_bits(rk628, GRF_SYSTEM_CON0, SW_INPUT_MODE_MASK,
 			      SW_INPUT_MODE(INPUT_MODE_RGB));
 
+	if (rk628->version == RK628F_VERSION) {
+		rk628_i2c_update_bits(rk628, GRF_RGB_RX_DBG_MEAS0,
+				      RGB_RX_MODET_EN | RGB_RX_DCLK_EN,
+				      RGB_RX_MODET_EN | RGB_RX_DCLK_EN);
+		rk628_i2c_update_bits(rk628, GRF_RGB_RX_DBG_MEAS3,
+				      RGB_RX_CNT_EN_MASK, RGB_RX_CNT_EN(1));
+	}
+
 	/* pinctrl for vop pin */
 	rk628_i2c_write(rk628, GRF_GPIO2AB_SEL_CON, 0xffffffff);
 	rk628_i2c_write(rk628, GRF_GPIO2C_SEL_CON, 0xffff5555);
@@ -119,6 +185,11 @@ static void rk628_bt1120_decoder_timing_cfg(struct rk628 *rk628)
 	dsp_hact_st = dsp_hbor_st + bor_left;
 	dsp_vact_st = dsp_vbor_st + bor_up;
 
+	if (rk628->version == RK628F_VERSION)
+		rk628_i2c_update_bits(rk628, GRF_RGB_RX_DBG_MEAS0,
+				      RGB_RX_MODET_EN | RGB_RX_DCLK_EN,
+				      RGB_RX_MODET_EN | RGB_RX_DCLK_EN);
+
 	rk628_i2c_write(rk628, GRF_BT1120_TIMING_CTRL0, BT1120_DSP_HS_END(dsp_hs_end) |
 			BT1120_DSP_HTOTAL(dsp_htotal));
 	rk628_i2c_write(rk628, GRF_BT1120_TIMING_CTRL1, BT1120_DSP_HACT_ST(dsp_hact_st));
diff --git a/drivers/misc/rk628/rk628_rgb.h b/drivers/misc/rk628/rk628_rgb.h
index de0993f01e2a..fb5c326b3310 100644
--- a/drivers/misc/rk628/rk628_rgb.h
+++ b/drivers/misc/rk628/rk628_rgb.h
@@ -15,4 +15,5 @@ void rk628_rgb_tx_enable(struct rk628 *rk628);
 void rk628_rgb_tx_disable(struct rk628 *rk628);
 void rk628_bt1120_rx_enable(struct rk628 *rk628);
 void rk628_bt1120_tx_enable(struct rk628 *rk628);
+void rk628_rgb_decoder_create_debugfs_file(struct rk628 *rk628);
 #endif