arm: tegra13: soctherm: temporary adjust throttle

Temporarily adjust thermal throttling parameters for T132 devices to
avoid random shutdown issues seen on some platforms.

Bug 1468124

Change-Id: Id7939110deae7f3076914a8a76049ca98fc843e4
Signed-off-by: Diwakar Tundlam <dtundlam@nvidia.com>
Reviewed-on: http://git-master/r/392519

1 files changed, 37 insertions, 0 deletions

diff --git a/arch/arm/mach-tegra/tegra11_soctherm.c b/arch/arm/mach-tegra/tegra11_soctherm.c
index ee8bfcfea1a8..d247b8e73b19 100644
--- a/arch/arm/mach-tegra/tegra11_soctherm.c
+++ b/arch/arm/mach-tegra/tegra11_soctherm.c
@@ -36,6 +36,7 @@
 #include <linux/uaccess.h>
 #include <linux/thermal.h>
 #include <linux/platform_data/thermal_sensors.h>
+#include <linux/pid_thermal_gov.h>
 #include <linux/bug.h>
 #include <linux/tegra-fuse.h>
 #include <linux/tegra-pmc.h>
@@ -723,6 +724,17 @@ static int soctherm_ocx_to_wake_gpio[TEGRA_SOC_OC_IRQ_MAX] = {
 static int sensor2therm_a[TSENSE_SIZE];
 static int sensor2therm_b[TSENSE_SIZE];
 
+static struct pid_thermal_gov_params t13_pid_params = {
+	.max_err_temp = 12000,
+	/* other fields are same */
+};
+
+struct soctherm_therm t13_therm = {
+	.passive_delay = 500,
+	.hotspot_offset = 0,
+	/* other fields are same */
+};
+
 /**
  * div64_s64_precise() - wrapper for div64_s64()
  * @a:	the dividend
@@ -1624,6 +1636,7 @@ static int __init soctherm_thermal_sys_init(void)
 {
 	char name[THERMAL_NAME_LENGTH];
 	struct soctherm_therm *therm;
+	struct pid_thermal_gov_params *gov;
 	bool oc_en = false;
 	int i, j;
 
@@ -1657,6 +1670,13 @@ static int __init soctherm_thermal_sys_init(void)
 			}
 		}
 
+		/* XXX: temporarily adjust paramters for T132 */
+		if (IS_T13X) {
+			gov = therm->tzp->governor_params;
+			gov->max_err_temp = t13_pid_params.max_err_temp;
+			therm->passive_delay = t13_therm.passive_delay;
+		}
+
 		snprintf(name, THERMAL_NAME_LENGTH, "%s-therm", therm_names[i]);
 		soctherm_th_zones[i] = thermal_zone_device_register(
 						name,
@@ -2822,9 +2842,26 @@ static int soctherm_init_platform_data(void)
 					i, j, therm->trips[j].trip_temp);
 				therm->trips[j].trip_temp -= rem;
 			}
+
+			/* XXX: temporarily lower thresholds for T132 */
+			if (IS_T13X) {
+				if (therm->trips[j].trip_type ==
+							THERMAL_TRIP_HOT)
+					therm->trips[j].trip_temp -= 2000;
+				else if (therm->trips[j].trip_type ==
+							THERMAL_TRIP_PASSIVE)
+					therm->trips[j].trip_temp -= 5000;
+			}
 		}
 	}
 
+	/* XXX: temporarily use ZERO hotspot offset for T132 */
+	if (IS_T13X) {
+		plat_data.therm[THERM_CPU].hotspot_offset = 0;
+		plat_data.therm[THERM_GPU].hotspot_offset = 0;
+		plat_data.therm[THERM_MEM].hotspot_offset = 0;
+	}
+
 	/* Program hotspot offsets per THERM */
 	r = REG_SET(0, TS_HOTSPOT_OFF_CPU,
 		    plat_data.therm[THERM_CPU].hotspot_offset / 1000);