diff --git a/drivers/gpu/drm/meson/meson_plane.c b/drivers/gpu/drm/meson/meson_plane.c
index d90427b93a51..f2b2be1e8088 100644
--- a/drivers/gpu/drm/meson/meson_plane.c
+++ b/drivers/gpu/drm/meson/meson_plane.c
@@ -318,7 +318,7 @@ static void meson_plane_atomic_disable(struct drm_plane *plane,
 
 	/* Disable OSD1 */
 	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
-		writel_bits_relaxed(3 << 8, 0,
+		writel_bits_relaxed(VIU_OSD1_POSTBLD_SRC_OSD1, 0,
 				    priv->io_base + _REG(OSD1_BLEND_SRC_CTRL));
 	else
 		writel_bits_relaxed(VPP_OSD1_POSTBLEND, 0,
diff --git a/drivers/gpu/drm/meson/meson_registers.h b/drivers/gpu/drm/meson/meson_registers.h
index 172f0794e0cd..7a52aac7e28a 100644
--- a/drivers/gpu/drm/meson/meson_registers.h
+++ b/drivers/gpu/drm/meson/meson_registers.h
@@ -146,11 +146,19 @@
 #define VIU_ADDR_START 0x1a00
 #define VIU_ADDR_END 0x1aff
 #define VIU_SW_RESET 0x1a01
+#define		VIU_SW_RESET_OSD1               BIT(0)
 #define VIU_MISC_CTRL0 0x1a06
+#define		VIU_CTRL0_VD1_AFBC_MASK         0x170000
 #define VIU_MISC_CTRL1 0x1a07
 #define D2D3_INTF_LENGTH 0x1a08
 #define D2D3_INTF_CTRL0 0x1a09
 #define VIU_OSD1_CTRL_STAT 0x1a10
+#define		VIU_OSD1_OSD_BLK_ENABLE         BIT(0)
+#define		VIU_OSD1_POSTBLD_SRC_VD1        (1 << 8)
+#define		VIU_OSD1_POSTBLD_SRC_VD2        (2 << 8)
+#define		VIU_OSD1_POSTBLD_SRC_OSD1       (3 << 8)
+#define		VIU_OSD1_POSTBLD_SRC_OSD2       (4 << 8)
+#define		VIU_OSD1_OSD_ENABLE             BIT(21)
 #define VIU_OSD1_CTRL_STAT2 0x1a2d
 #define VIU_OSD1_COLOR_ADDR 0x1a11
 #define VIU_OSD1_COLOR 0x1a12
@@ -240,6 +248,12 @@
 #define VIU_OSD3_MALI_UNPACK_CTRL 0x3d9f
 #define VIU_OSD3_DIMM_CTRL 0x3da0
 
+#define VIU_OSD_DDR_PRIORITY_URGENT      BIT(0)
+#define VIU_OSD_HOLD_FIFO_LINES(lines)   ((lines & 0x1f) << 5)
+#define VIU_OSD_FIFO_DEPTH_VAL(val)      ((val & 0x7f) << 12)
+#define VIU_OSD_WORDS_PER_BURST(words)   (((words & 0x4) >> 1) << 22)
+#define VIU_OSD_FIFO_LIMITS(size)        ((size & 0xf) << 24)
+
 #define VD1_IF0_GEN_REG 0x1a50
 #define VD1_IF0_CANVAS0 0x1a51
 #define VD1_IF0_CANVAS1 0x1a52
@@ -1620,10 +1634,18 @@
 #define VPU_MAFBC_PREFETCH_CFG_S3 0x3a7c
 
 #define DOLBY_PATH_CTRL 0x1a0c
+#define		DOLBY_BYPASS_EN(val)            (val & 0xf)
 #define OSD_PATH_MISC_CTRL 0x1a0e
 #define MALI_AFBCD_TOP_CTRL 0x1a0f
 
 #define VIU_OSD_BLEND_CTRL 0x39b0
+#define		VIU_OSD_BLEND_REORDER(dest, src)      ((src) << (dest * 4))
+#define		VIU_OSD_BLEND_DIN_EN(bits)            ((bits & 0xf) << 20)
+#define		VIU_OSD_BLEND1_DIN3_BYPASS_TO_DOUT1   BIT(24)
+#define		VIU_OSD_BLEND1_DOUT_BYPASS_TO_BLEND2  BIT(25)
+#define		VIU_OSD_BLEND_DIN0_BYPASS_TO_DOUT0    BIT(26)
+#define		VIU_OSD_BLEND_BLEN2_PREMULT_EN(input) ((input & 0x3) << 27)
+#define		VIU_OSD_BLEND_HOLD_LINES(lines)       ((lines & 0x7) << 29)
 #define VIU_OSD_BLEND_CTRL1 0x39c0
 #define VIU_OSD_BLEND_DIN0_SCOPE_H 0x39b1
 #define VIU_OSD_BLEND_DIN0_SCOPE_V 0x39b2
@@ -1665,6 +1687,11 @@
 #define		VD_BLEND_POSTBLD_PREMULT_EN     BIT(16)
 #define OSD1_BLEND_SRC_CTRL 0x1dfd
 #define OSD2_BLEND_SRC_CTRL 0x1dfe
+#define		OSD_BLEND_POSTBLD_SRC_VD1       (1 << 8)
+#define		OSD_BLEND_POSTBLD_SRC_VD2       (2 << 8)
+#define		OSD_BLEND_POSTBLD_SRC_OSD1      (3 << 8)
+#define		OSD_BLEND_POSTBLD_SRC_OSD2      (4 << 8)
+#define		OSD_BLEND_PATH_SEL_ENABLE       BIT(20)
 
 #define VPP_POST_BLEND_BLEND_DUMMY_DATA 0x3968
 #define VPP_POST_BLEND_DUMMY_ALPHA 0x3969
diff --git a/drivers/gpu/drm/meson/meson_viu.c b/drivers/gpu/drm/meson/meson_viu.c
index 4b2b3024d371..8b7fde2de489 100644
--- a/drivers/gpu/drm/meson/meson_viu.c
+++ b/drivers/gpu/drm/meson/meson_viu.c
@@ -323,9 +323,9 @@ void meson_viu_osd1_reset(struct meson_drm *priv)
 				priv->io_base + _REG(VIU_OSD1_CTRL_STAT2));
 
 	/* Reset OSD1 */
-	writel_bits_relaxed(BIT(0), BIT(0),
+	writel_bits_relaxed(VIU_SW_RESET_OSD1, VIU_SW_RESET_OSD1,
 			    priv->io_base + _REG(VIU_SW_RESET));
-	writel_bits_relaxed(BIT(0), 0,
+	writel_bits_relaxed(VIU_SW_RESET_OSD1, 0,
 			    priv->io_base + _REG(VIU_SW_RESET));
 
 	/* Rewrite these registers state lost in the reset */
@@ -338,15 +338,22 @@ void meson_viu_osd1_reset(struct meson_drm *priv)
 	meson_viu_load_matrix(priv);
 }
 
+static inline uint32_t meson_viu_osd_burst_length_reg(uint32_t length)
+{
+	uint32_t val = (((length & 0x80) % 24) / 12);
+
+	return (((val & 0x3) << 10) | (((val & 0x4) >> 2) << 31));
+}
+
 void meson_viu_init(struct meson_drm *priv)
 {
 	uint32_t reg;
 
 	/* Disable OSDs */
-	writel_bits_relaxed(BIT(0) | BIT(21), 0,
-			priv->io_base + _REG(VIU_OSD1_CTRL_STAT));
-	writel_bits_relaxed(BIT(0) | BIT(21), 0,
-			priv->io_base + _REG(VIU_OSD2_CTRL_STAT));
+	writel_bits_relaxed(VIU_OSD1_OSD_BLK_ENABLE | VIU_OSD1_OSD_ENABLE, 0,
+			    priv->io_base + _REG(VIU_OSD1_CTRL_STAT));
+	writel_bits_relaxed(VIU_OSD1_OSD_BLK_ENABLE | VIU_OSD1_OSD_ENABLE, 0,
+			    priv->io_base + _REG(VIU_OSD2_CTRL_STAT));
 
 	/* On GXL/GXM, Use the 10bit HDR conversion matrix */
 	if (meson_vpu_is_compatible(priv, "amlogic,meson-gxm-vpu") ||
@@ -357,19 +364,17 @@ void meson_viu_init(struct meson_drm *priv)
 					       true);
 
 	/* Initialize OSD1 fifo control register */
-	reg = BIT(0) |	/* Urgent DDR request priority */
-	      (4 << 5); /* hold_fifo_lines */
+	reg = VIU_OSD_DDR_PRIORITY_URGENT |
+		VIU_OSD_HOLD_FIFO_LINES(4) |
+		VIU_OSD_FIFO_DEPTH_VAL(32) | /* fifo_depth_val: 32*8=256 */
+		VIU_OSD_WORDS_PER_BURST(4) | /* 4 words in 1 burst */
+		VIU_OSD_FIFO_LIMITS(2);      /* fifo_lim: 2*16=32 */
+
 	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu"))
-		reg |= (1 << 10) | /* burst length 32 */
-		       (32 << 12) | /* fifo_depth_val: 32*8=256 */
-		       (2 << 22) | /* 4 words in 1 burst */
-		       (2 << 24) |
-		       (1 << 31);
+		reg |= meson_viu_osd_burst_length_reg(32);
 	else
-		reg |= (3 << 10) | /* burst length 64 */
-		       (32 << 12) | /* fifo_depth_val: 32*8=256 */
-		       (2 << 22) | /* 4 words in 1 burst */
-		       (2 << 24);
+		reg |= meson_viu_osd_burst_length_reg(64);
+
 	writel_relaxed(reg, priv->io_base + _REG(VIU_OSD1_FIFO_CTRL_STAT));
 	writel_relaxed(reg, priv->io_base + _REG(VIU_OSD2_FIFO_CTRL_STAT));
 
@@ -382,12 +387,9 @@ void meson_viu_init(struct meson_drm *priv)
 			    priv->io_base + _REG(VIU_OSD2_CTRL_STAT2));
 
 	/* Disable VD1 AFBC */
-	/* di_mif0_en=0 mif0_to_vpp_en=0 di_mad_en=0 */
-	writel_bits_relaxed(0x7 << 16, 0,
-			priv->io_base + _REG(VIU_MISC_CTRL0));
-	/* afbc vd1 set=0 */
-	writel_bits_relaxed(BIT(20), 0,
-			priv->io_base + _REG(VIU_MISC_CTRL0));
+	/* di_mif0_en=0 mif0_to_vpp_en=0 di_mad_en=0 and afbc vd1 set=0*/
+	writel_bits_relaxed(VIU_CTRL0_VD1_AFBC_MASK, 0,
+			    priv->io_base + _REG(VIU_MISC_CTRL0));
 	writel_relaxed(0, priv->io_base + _REG(AFBC_ENABLE));
 
 	writel_relaxed(0x00FF00C0,
@@ -396,27 +398,31 @@ void meson_viu_init(struct meson_drm *priv)
 			priv->io_base + _REG(VD2_IF0_LUMA_FIFO_SIZE));
 
 	if (meson_vpu_is_compatible(priv, "amlogic,meson-g12a-vpu")) {
-		writel_relaxed(4 << 29 |
-				1 << 27 |
-				1 << 26 | /* blend_din0 input to blend0 */
-				1 << 25 | /* blend1_dout to blend2 */
-				1 << 24 | /* blend1_din3 input to blend1 */
-				1 << 20 |
-				0 << 16 |
-				1,
-				priv->io_base + _REG(VIU_OSD_BLEND_CTRL));
-		writel_relaxed(1 << 20,
-				priv->io_base + _REG(OSD1_BLEND_SRC_CTRL));
-		writel_relaxed(1 << 20,
-				priv->io_base + _REG(OSD2_BLEND_SRC_CTRL));
+		writel_relaxed(VIU_OSD_BLEND_REORDER(0, 1) |
+			       VIU_OSD_BLEND_REORDER(1, 0) |
+			       VIU_OSD_BLEND_REORDER(2, 0) |
+			       VIU_OSD_BLEND_REORDER(3, 0) |
+			       VIU_OSD_BLEND_DIN_EN(1) |
+			       VIU_OSD_BLEND1_DIN3_BYPASS_TO_DOUT1 |
+			       VIU_OSD_BLEND1_DOUT_BYPASS_TO_BLEND2 |
+			       VIU_OSD_BLEND_DIN0_BYPASS_TO_DOUT0 |
+			       VIU_OSD_BLEND_BLEN2_PREMULT_EN(1) |
+			       VIU_OSD_BLEND_HOLD_LINES(4),
+			       priv->io_base + _REG(VIU_OSD_BLEND_CTRL));
+
+		writel_relaxed(VIU_OSD1_POSTBLD_SRC_OSD1,
+			       priv->io_base + _REG(OSD1_BLEND_SRC_CTRL));
+		writel_relaxed(OSD_BLEND_PATH_SEL_ENABLE,
+			       priv->io_base + _REG(OSD2_BLEND_SRC_CTRL));
 		writel_relaxed(0, priv->io_base + _REG(VD1_BLEND_SRC_CTRL));
 		writel_relaxed(0, priv->io_base + _REG(VD2_BLEND_SRC_CTRL));
 		writel_relaxed(0,
 				priv->io_base + _REG(VIU_OSD_BLEND_DUMMY_DATA0));
 		writel_relaxed(0,
 				priv->io_base + _REG(VIU_OSD_BLEND_DUMMY_ALPHA));
-		writel_bits_relaxed(0x3 << 2, 0x3 << 2,
-				priv->io_base + _REG(DOLBY_PATH_CTRL));
+
+		writel_bits_relaxed(DOLBY_BYPASS_EN(0xc), DOLBY_BYPASS_EN(0xc),
+				    priv->io_base + _REG(DOLBY_PATH_CTRL));
 	}
 
 	priv->viu.osd1_enabled = false;
