From 6d84ec9928442f3fc678d072a6f65cad3504b7e1 Mon Sep 17 00:00:00 2001
From: Paolo Sabatino <paolo.sabatino@gmail.com>
Date: Fri, 30 Jan 2026 23:11:19 +0100
Subject: [PATCH] rockchip: fix memory controller voltage excursion for a
 sensitive board

---
 .../archive/rockchip-6.18/dt/rk322x-box.dts   |  1 +
 .../overlay/rk322x-led-conf5.dtso             | 27 +++++++++++++++++++
 .../archive/rockchip-6.19/dt/rk322x-box.dts   |  1 +
 .../overlay/rk322x-led-conf5.dtso             | 27 +++++++++++++++++++
 4 files changed, 56 insertions(+)

diff --git a/patch/kernel/archive/rockchip-6.18/dt/rk322x-box.dts b/patch/kernel/archive/rockchip-6.18/dt/rk322x-box.dts
index 112278d28a..1f87243c85 100644
--- a/patch/kernel/archive/rockchip-6.18/dt/rk322x-box.dts
+++ b/patch/kernel/archive/rockchip-6.18/dt/rk322x-box.dts
@@ -210,6 +210,7 @@
 		regulator-name = "vdd_log";
 		regulator-min-microvolt = <1000000>;
 		regulator-max-microvolt = <1300000>;
+		regulator-settling-time-us = <50>;
 		regulator-always-on;
 		regulator-boot-on;
 	};
diff --git a/patch/kernel/archive/rockchip-6.18/overlay/rk322x-led-conf5.dtso b/patch/kernel/archive/rockchip-6.18/overlay/rk322x-led-conf5.dtso
index 5173872d11..8f2ff1f592 100644
--- a/patch/kernel/archive/rockchip-6.18/overlay/rk322x-led-conf5.dtso
+++ b/patch/kernel/archive/rockchip-6.18/overlay/rk322x-led-conf5.dtso
@@ -93,5 +93,32 @@
 		};
 	};
 
+	fragment@6 {
+		target = <&dmc_opp_table>;
+		__overlay__ {
+			compatible = "operating-points-v2";
+
+			opp-330000000 {
+				opp-hz = /bits/ 64 <330000000>;
+				opp-microvolt = <1100000>;
+			};
+
+			opp-534000000 {
+				opp-hz = /bits/ 64 <534000000>;
+				opp-microvolt = <1100000>;
+			};
+
+			opp-660000000 {
+				opp-hz = /bits/ 64 <660000000>;
+				opp-microvolt = <1100000>;
+			};
+
+			opp-786000000 {
+				opp-hz = /bits/ 64 <786000000>;
+				opp-microvolt = <1150000>;
+			};
+		};
+	};
+
 
 };
diff --git a/patch/kernel/archive/rockchip-6.19/dt/rk322x-box.dts b/patch/kernel/archive/rockchip-6.19/dt/rk322x-box.dts
index 112278d28a..1f87243c85 100644
--- a/patch/kernel/archive/rockchip-6.19/dt/rk322x-box.dts
+++ b/patch/kernel/archive/rockchip-6.19/dt/rk322x-box.dts
@@ -210,6 +210,7 @@
 		regulator-name = "vdd_log";
 		regulator-min-microvolt = <1000000>;
 		regulator-max-microvolt = <1300000>;
+		regulator-settling-time-us = <50>;
 		regulator-always-on;
 		regulator-boot-on;
 	};
diff --git a/patch/kernel/archive/rockchip-6.19/overlay/rk322x-led-conf5.dtso b/patch/kernel/archive/rockchip-6.19/overlay/rk322x-led-conf5.dtso
index 5173872d11..8f2ff1f592 100644
--- a/patch/kernel/archive/rockchip-6.19/overlay/rk322x-led-conf5.dtso
+++ b/patch/kernel/archive/rockchip-6.19/overlay/rk322x-led-conf5.dtso
@@ -93,5 +93,32 @@
 		};
 	};
 
+	fragment@6 {
+		target = <&dmc_opp_table>;
+		__overlay__ {
+			compatible = "operating-points-v2";
+
+			opp-330000000 {
+				opp-hz = /bits/ 64 <330000000>;
+				opp-microvolt = <1100000>;
+			};
+
+			opp-534000000 {
+				opp-hz = /bits/ 64 <534000000>;
+				opp-microvolt = <1100000>;
+			};
+
+			opp-660000000 {
+				opp-hz = /bits/ 64 <660000000>;
+				opp-microvolt = <1100000>;
+			};
+
+			opp-786000000 {
+				opp-hz = /bits/ 64 <786000000>;
+				opp-microvolt = <1150000>;
+			};
+		};
+	};
+
 
 };