Set gain to range 102-160 in order to not have dotted image and blinking

hardware/nvidia-spiri/platform/t18x/common/kernel-dts/t18x-common-platforms/tegra186-tx2-spiri-camera.dtsi

@@ -102,7 +102,7 @@ i2c8 = "/i2c@31e0000";
 				framerate_factor = "1000000";
 				exposure_factor = "1000000";
 				min_gain_val = "102";
-        max_gain_val = "250";
+				max_gain_val = "160";
 				step_gain_val = "1";
 				default_gain = "102";
 				min_hdr_ratio = "1";
@@ -116,7 +116,7 @@ i2c8 = "/i2c@31e0000";
 				min_exp_time = "100"; // us
 				max_exp_time = "16620"; // us
 				step_exp_time = "1";
-        default_exp_time = "15000"; // us
+				default_exp_time = "16620"; // us
 			};
 		      mode1 {
 				mclk_khz = "24000";
@@ -141,7 +141,7 @@ i2c8 = "/i2c@31e0000";
 				framerate_factor = "1000000";
 				exposure_factor = "1000000";
 				min_gain_val = "102";
-        max_gain_val = "250";
+				max_gain_val = "160";
 				step_gain_val = "1";
 				default_gain = "102";
 				min_hdr_ratio = "1";
@@ -155,7 +155,7 @@ i2c8 = "/i2c@31e0000";
 				min_exp_time = "100"; // us
 				max_exp_time = "22220"; // us
 				step_exp_time = "1";
-        default_exp_time = "15000"; // us
+				default_exp_time = "22220"; // us
 		      };
 
 			ports {  
@@ -229,7 +229,7 @@ i2c8 = "/i2c@31e0000";
 				framerate_factor = "1000000";
 				exposure_factor = "1000000";
 				min_gain_val = "102";
-        max_gain_val = "250" ;
+				max_gain_val = "160" ;
 				step_gain_val = "1";
 				default_gain = "102";
 				min_hdr_ratio = "1";
@@ -243,7 +243,7 @@ i2c8 = "/i2c@31e0000";
 				min_exp_time = "100"; // us
 				max_exp_time = "16620"; // us
 				step_exp_time = "1";
-        default_exp_time = "15000"; // us
+				default_exp_time = "16620"; // us
 			};
 		      mode1 {
 				mclk_khz = "24000";
@@ -268,7 +268,7 @@ i2c8 = "/i2c@31e0000";
 				framerate_factor = "1000000";
 				exposure_factor = "1000000";
 				min_gain_val = "102";
-        max_gain_val = "250";
+				max_gain_val = "160";
 				step_gain_val = "1";
 				default_gain = "102";
 				min_hdr_ratio = "1";
@@ -282,7 +282,7 @@ i2c8 = "/i2c@31e0000";
 				min_exp_time = "100"; // us
 				max_exp_time = "22220"; // us
 				step_exp_time = "1";
-        default_exp_time = "15000"; // us
+				default_exp_time = "22220"; // us
 		      };
 			ports {  
 				#address-cells = <0x1>;

kernel/nvidia-spiri/drivers/media/i2c/mt9m021.c

@@ -442,12 +442,10 @@ static int mt9m021_set_gain(struct tegracam_device *tc_dev, s64 val)
 		goto exit;
 
 	/* Update global gain */
-	err =
-      mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN, gain);
+	err = mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN, gain);
 	if (err)
 		goto exit;
-	err =
-      mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN_CB, gain);
+	err = mt9m021_write_reg16(s_data, MT9M021_GLOBAL_GAIN_CB, gain);
 	if (err)
 		goto exit;
 
@@ -564,8 +562,7 @@ static int mt9m021_set_analog_gain(struct tegracam_device *tc_dev, s64 val)
 		goto exit;
 	reg16 =
 	    (reg16 & ~MT9M021_ANALOG_GAIN_MASK) |
-	    ((val << MT9M021_ANALOG_GAIN_SHIFT) &
-	     MT9M021_ANALOG_GAIN_MASK);
+	    ((val << MT9M021_ANALOG_GAIN_SHIFT) & MT9M021_ANALOG_GAIN_MASK);
 	err = mt9m021_write_reg16(s_data, MT9M021_DIGITAL_TEST, reg16);
 	if (err)
 		goto exit;
@@ -642,8 +639,7 @@ static int mt9m021_set_test_pattern(struct tegracam_device *tc_dev, s32 val)
 		err = mt9m021_write_reg16(s_data, MT9M021_TEST_PATTERN,
 					  MT9M021_TEST_PATTERN_VAL);
 	else
-		err = mt9m021_write_reg16(s_data, MT9M021_TEST_PATTERN,
-					  val);
+		err = mt9m021_write_reg16(s_data, MT9M021_TEST_PATTERN, val);
 	if (err)
 		goto exit;
 
@@ -1116,7 +1112,8 @@ static int mt9m021_verify_chip_id(struct mt9m021 *priv)
 		err = mt9m021_read_reg16(s_data, MT9M021_CHIP_ID_REG, &chip_id);
 		if (!err)
 			break;
-		dev_info(&client->dev, "Failed to read Chip ID, trying again\n");
+		dev_info(&client->dev,
+			 "Failed to read Chip ID, trying again\n");
 		max_retries--;
 		msleep(30);
 	}

kernel/nvidia-spiri/drivers/media/i2c/mt9m021_mode_tbls.h

@@ -173,8 +173,10 @@ static const int mt9m021_framerates_1280x960[] = {
 };
 
 static const struct camera_common_frmfmt mt9m021_frmfmt[] = {
-  {{1280, 720},	mt9m021_framerates_1280x720, 1, 0, MT9M021_MODE_1280x720_60FPS},
-  {{1280, 960},	mt9m021_framerates_1280x960, 1, 0, MT9M021_MODE_1280x960_45FPS},
+	{{1280, 720}, mt9m021_framerates_1280x720, 1, 0,
+	 MT9M021_MODE_1280x720_60FPS},
+	{{1280, 960}, mt9m021_framerates_1280x960, 1, 0,
+	 MT9M021_MODE_1280x960_45FPS},
 };
 
 #endif				/* __MT9M021_I2C_TABLES__ */