From f29dd7b7c401c1562e48a46e5991cb62f96a2679 Mon Sep 17 00:00:00 2001
From: Yi-Wei Wang <yiweiw@nvidia.com>
Date: Tue, 8 Aug 2023 19:04:32 +0800
Subject: [PATCH] t23x: overlay: Disable throttling for safety IGX

The clock frequency should be static and avoid any kind of throttling
mechanism for safety IGX. So, this change overwrites the cooling states
of the cpufreq and the devfreq cooling devices to 0 to avoid entering
any other cooling states that could throttle the clocks.

Bug 4035713
Bug 4084478

Signed-off-by: Yi-Wei Wang <yiweiw@nvidia.com>
Change-Id: I9756787c0e22f9325d32a4c6f3a2e7bccdd41274
Reviewed-on: https://git-master.nvidia.com/r/c/device/hardware/nvidia/t23x-public-dts/+/2952583
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
---
 .../tegra234-p3740-0002+p3701-0008-safety.dts | 119 ++++++++++++++++++
 1 file changed, 119 insertions(+)

diff --git a/overlay/tegra234-p3740-0002+p3701-0008-safety.dts b/overlay/tegra234-p3740-0002+p3701-0008-safety.dts
index af6f713..ba14535 100644
--- a/overlay/tegra234-p3740-0002+p3701-0008-safety.dts
+++ b/overlay/tegra234-p3740-0002+p3701-0008-safety.dts
@@ -70,4 +70,123 @@
 			};
 		};
 	};
+
+	fragment-t234-p3740-p3701-safety@2 {
+		target-path = "/";
+		__overlay__ {
+			thermal-zones {
+				cpu-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+
+				gpu-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+
+				cv0-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+
+				cv1-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+
+				cv2-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+
+				soc0-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+
+				soc1-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+
+				soc2-thermal {
+					cooling-maps {
+						map-cpufreq {
+							cooling-device = <&cpu0_0 0 0>,
+									 <&cpu1_0 0 0>,
+									 <&cpu2_0 0 0>;
+						};
+
+						map-devfreq {
+							cooling-device = <&ga10b 0 0>;
+						};
+					};
+				};
+			};
+		};
+	};
 };
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