linux-kernel - [PATCH v7 4/7] thermal/drivers/exynos: Fixed the efuse min max value for exynos5422

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Message-ID: <20250813131007.343402-5-linux.amoon@gmail.com>
Date: Wed, 13 Aug 2025 18:39:48 +0530
From: Anand Moon <linux.amoon@...il.com>
To: Bartlomiej Zolnierkiewicz <bzolnier@...il.com>,
	Krzysztof Kozlowski <krzk@...nel.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Daniel Lezcano <daniel.lezcano@...aro.org>,
	Zhang Rui <rui.zhang@...el.com>,
	Lukasz Luba <lukasz.luba@....com>,
	Alim Akhtar <alim.akhtar@...sung.com>,
	Nathan Chancellor <nathan@...nel.org>,
	Nick Desaulniers <nick.desaulniers+lkml@...il.com>,
	Bill Wendling <morbo@...gle.com>,
	Justin Stitt <justinstitt@...gle.com>,
	linux-pm@...r.kernel.org (open list:SAMSUNG THERMAL DRIVER),
	linux-samsung-soc@...r.kernel.org (open list:SAMSUNG THERMAL DRIVER),
	linux-arm-kernel@...ts.infradead.org (moderated list:ARM/SAMSUNG S3C, S5P AND EXYNOS ARM ARCHITECTURES),
	linux-kernel@...r.kernel.org (open list),
	llvm@...ts.linux.dev (open list:CLANG/LLVM BUILD SUPPORT:Keyword:\b(?i:clang|llvm)\b)
Cc: Anand Moon <linux.amoon@...il.com>,
	Mateusz Majewski <m.majewski2@...sung.com>
Subject: [PATCH v7 4/7] thermal/drivers/exynos: Fixed the efuse min max value for exynos5422

As per Exynos5422 user manual e-Fuse range min~max range is 16~76.
if e-Fuse value is out of this range, then thermal sensor may not
sense thermal data properly. Additionally, refactors the efuse
initialization logic in exynos_map_dt_data() by replacing nested
if-else blocks with a switch statement for better readability
and maintainability. Ensures correct efuse setup based on SoC type.

Signed-off-by: Anand Moon <linux.amoon@...il.com>
---
v7: drop the Rb Llukasz, as we dropped the nested switch to set efuse.
v6: Add Rb Lukasz and fix typo in subject
v5: None
V4: None
---
 drivers/thermal/samsung/exynos_tmu.c | 24 ++++++++++++++++++------
 1 file changed, 18 insertions(+), 6 deletions(-)

diff --git a/drivers/thermal/samsung/exynos_tmu.c b/drivers/thermal/samsung/exynos_tmu.c
index 5f017a78f437..3d12e95703bf 100644
--- a/drivers/thermal/samsung/exynos_tmu.c
+++ b/drivers/thermal/samsung/exynos_tmu.c
@@ -884,6 +884,22 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 	case SOC_ARCH_EXYNOS4412:
 	case SOC_ARCH_EXYNOS5250:
 	case SOC_ARCH_EXYNOS5260:
+		data->tmu_set_low_temp = exynos4412_tmu_set_low_temp;
+		data->tmu_set_high_temp = exynos4412_tmu_set_high_temp;
+		data->tmu_disable_low = exynos4412_tmu_disable_low;
+		data->tmu_disable_high = exynos4210_tmu_disable_high;
+		data->tmu_set_crit_temp = exynos4412_tmu_set_crit_temp;
+		data->tmu_initialize = exynos4412_tmu_initialize;
+		data->tmu_control = exynos4210_tmu_control;
+		data->tmu_read = exynos4412_tmu_read;
+		data->tmu_set_emulation = exynos4412_tmu_set_emulation;
+		data->tmu_clear_irqs = exynos4210_tmu_clear_irqs;
+		data->gain = 8;
+		data->reference_voltage = 16;
+		data->efuse_value = 55;
+		data->min_efuse_value = 0;
+		data->max_efuse_value = 100;
+		break;
 	case SOC_ARCH_EXYNOS5420:
 	case SOC_ARCH_EXYNOS5420_TRIMINFO:
 		data->tmu_set_low_temp = exynos4412_tmu_set_low_temp;
@@ -899,12 +915,8 @@ static int exynos_map_dt_data(struct platform_device *pdev)
 		data->gain = 8;
 		data->reference_voltage = 16;
 		data->efuse_value = 55;
-		if (data->soc != SOC_ARCH_EXYNOS5420 &&
-		    data->soc != SOC_ARCH_EXYNOS5420_TRIMINFO)
-			data->min_efuse_value = 40;
-		else
-			data->min_efuse_value = 0;
-		data->max_efuse_value = 100;
+		data->min_efuse_value = 16;
+		data->max_efuse_value = 76;
 		break;
 	case SOC_ARCH_EXYNOS5433:
 		data->tmu_set_low_temp = exynos5433_tmu_set_low_temp;
-- 
2.50.1