1 files changed, 62 insertions, 0 deletions
diff --git a/yocto/kernel_lvds_freq.patch b/yocto/kernel_lvds_freq.patch
new file mode 100644
index 0000000..9955bc4
--- /dev/null
+++ b/yocto/kernel_lvds_freq.patch
@@ -0,0 +1,62 @@
+diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+index 55adf1bf45d9..c875474e6c45 100644
+--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
++++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+@@ -752,7 +752,7 @@ clk: clock-controller@30380000 {
+ 						       <800000000>,
+ 						       <393216000>,
+ 						       <361267200>,
+-						       <1039500000>;
++						       <252000000>;
+ 			};
+ 
+ 			src: reset-controller@30390000 {
+diff --git a/drivers/clk/imx/clk-pll14xx.c b/drivers/clk/imx/clk-pll14xx.c
+index 6c17786ecb9f..8c9840f08c0e 100644
+--- a/drivers/clk/imx/clk-pll14xx.c
++++ b/drivers/clk/imx/clk-pll14xx.c
+@@ -75,6 +75,7 @@ static const struct imx_pll14xx_rate_table imx_pll1443x_tbl[] = {
+ 	PLL_1443X_RATE(49152000U, 393, 3, 6, 0x374c),
+ 	PLL_1443X_RATE(45158400U, 241, 2, 6, 0xd845),
+ 	PLL_1443X_RATE(40960000U, 109, 1, 6, 0x3a07),
++	PLL_1443X_RATE(252000000U, 84, 2, 2, 0),
+ };
+ 
+ struct imx_pll14xx_clk imx_1443x_pll = {
+diff --git a/drivers/gpu/drm/imx/imx8mp-ldb.c b/drivers/gpu/drm/imx/imx8mp-ldb.c
+index e3f5c5e6e842..55dbafa863cf 100644
+--- a/drivers/gpu/drm/imx/imx8mp-ldb.c
++++ b/drivers/gpu/drm/imx/imx8mp-ldb.c
+@@ -186,15 +186,6 @@ imx8mp_ldb_encoder_atomic_check(struct drm_encoder *encoder,
+ 		return -EINVAL;
+ 	}
+ 
+-	/*
+-	 * Due to limited video PLL frequency points on i.MX8mp,
+-	 * we do mode fixup here in case any mode is unsupported.
+-	 */
+-	if (ldb->dual)
+-		mode->clock = mode->clock > 100000 ? 148500 : 74250;
+-	else
+-		mode->clock = 74250;
+-
+ 	return 0;
+ }
+ 
+@@ -212,16 +203,6 @@ imx8mp_ldb_encoder_mode_valid(struct drm_encoder *encoder,
+ 	if (ldb_ch->panel)
+ 		return MODE_OK;
+ 
+-	/*
+-	 * Due to limited video PLL frequency points on i.MX8mp,
+-	 * we do mode valid check here.
+-	 */
+-	if (ldb->dual && mode->clock != 74250 && mode->clock != 148500)
+-		return MODE_NOCLOCK;
+-
+-	if (!ldb->dual && mode->clock != 74250)
+-		return MODE_NOCLOCK;
+-
+ 	return MODE_OK;
+ }
+