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Message-ID: <20250321145326.113211-4-clamor95@gmail.com>
Date: Fri, 21 Mar 2025 16:53:24 +0200
From: Svyatoslav Ryhel <clamor95@...il.com>
To: "Rafael J. Wysocki" <rafael@...nel.org>,
Daniel Lezcano <daniel.lezcano@...aro.org>,
Zhang Rui <rui.zhang@...el.com>,
Lukasz Luba <lukasz.luba@....com>,
Rob Herring <robh@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
Conor Dooley <conor+dt@...nel.org>,
Thierry Reding <thierry.reding@...il.com>,
Thierry Reding <treding@...dia.com>,
Jonathan Hunter <jonathanh@...dia.com>,
Svyatoslav Ryhel <clamor95@...il.com>
Cc: linux-pm@...r.kernel.org,
devicetree@...r.kernel.org,
linux-tegra@...r.kernel.org,
linux-kernel@...r.kernel.org
Subject: [PATCH v1 3/5] thermal: tegra: soctherm-fuse: parametrize configuration further
Prepare soctherm fuse calibration for Tegra114 support.
Signed-off-by: Svyatoslav Ryhel <clamor95@...il.com>
---
drivers/thermal/tegra/soctherm-fuse.c | 33 ++++++++++++++++-------
drivers/thermal/tegra/soctherm.h | 13 ++++++++-
drivers/thermal/tegra/tegra124-soctherm.c | 8 ++++++
drivers/thermal/tegra/tegra132-soctherm.c | 8 ++++++
drivers/thermal/tegra/tegra210-soctherm.c | 8 ++++++
5 files changed, 59 insertions(+), 11 deletions(-)
diff --git a/drivers/thermal/tegra/soctherm-fuse.c b/drivers/thermal/tegra/soctherm-fuse.c
index 190f95280e0b..3b808c4521b8 100644
--- a/drivers/thermal/tegra/soctherm-fuse.c
+++ b/drivers/thermal/tegra/soctherm-fuse.c
@@ -9,15 +9,10 @@
#include "soctherm.h"
-#define NOMINAL_CALIB_FT 105
-#define NOMINAL_CALIB_CP 25
-
#define FUSE_TSENSOR_CALIB_CP_TS_BASE_MASK 0x1fff
#define FUSE_TSENSOR_CALIB_FT_TS_BASE_MASK (0x1fff << 13)
#define FUSE_TSENSOR_CALIB_FT_TS_BASE_SHIFT 13
-#define FUSE_TSENSOR_COMMON 0x180
-
/*
* Tegra210: Layout of bits in FUSE_TSENSOR_COMMON:
* 3 2 1 0
@@ -44,6 +39,13 @@
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
* |---------------------------------------------------| SHIFT_CP |
* +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ *
+ * Tegra11x: Layout of bits in FUSE_TSENSOR_COMMON aka FUSE_VSENSOR_CALIB:
+ * 3 2 1 0
+ * 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
+ * | SHFT_FT | BASE_FT | SHIFT_CP | BASE_CP |
+ * +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
*/
#define CALIB_COEFFICIENT 1000000LL
@@ -77,7 +79,7 @@ int tegra_calc_shared_calib(const struct tegra_soctherm_fuse *tfuse,
s32 shifted_cp, shifted_ft;
int err;
- err = tegra_fuse_readl(FUSE_TSENSOR_COMMON, &val);
+ err = tegra_fuse_readl(tfuse->fuse_common_reg, &val);
if (err)
return err;
@@ -88,7 +90,7 @@ int tegra_calc_shared_calib(const struct tegra_soctherm_fuse *tfuse,
shifted_ft = (val & tfuse->fuse_shift_ft_mask) >>
tfuse->fuse_shift_ft_shift;
- shifted_ft = sign_extend32(shifted_ft, 4);
+ shifted_ft = sign_extend32(shifted_ft, tfuse->fuse_shift_ft_bits);
if (tfuse->fuse_spare_realignment) {
err = tegra_fuse_readl(tfuse->fuse_spare_realignment, &val);
@@ -96,10 +98,21 @@ int tegra_calc_shared_calib(const struct tegra_soctherm_fuse *tfuse,
return err;
}
- shifted_cp = sign_extend32(val, 5);
+ shifted_cp = (val & tfuse->fuse_shift_cp_mask) >>
+ tfuse->fuse_shift_cp_shift;
+ shifted_cp = sign_extend32(val, tfuse->fuse_shift_cp_bits);
- shared->actual_temp_cp = 2 * NOMINAL_CALIB_CP + shifted_cp;
- shared->actual_temp_ft = 2 * NOMINAL_CALIB_FT + shifted_ft;
+ shared->actual_temp_cp = 2 * tfuse->nominal_calib_cp + shifted_cp;
+ shared->actual_temp_ft = 2 * tfuse->nominal_calib_ft + shifted_ft;
+
+ /*
+ * Tegra114 provides fuse thermal corrections in 0.5C while expected
+ * precision should be 1C
+ */
+ if (tfuse->lower_precision) {
+ shared->actual_temp_cp /= 2;
+ shared->actual_temp_ft /= 2;
+ }
return 0;
}
diff --git a/drivers/thermal/tegra/soctherm.h b/drivers/thermal/tegra/soctherm.h
index 70501e73d586..6c0e0cc594a5 100644
--- a/drivers/thermal/tegra/soctherm.h
+++ b/drivers/thermal/tegra/soctherm.h
@@ -56,6 +56,13 @@
#define SENSOR_TEMP2_MEM_TEMP_MASK (0xffff << 16)
#define SENSOR_TEMP2_PLLX_TEMP_MASK 0xffff
+#define NOMINAL_CALIB_FT 105
+#define T114X_CALIB_FT 90
+#define NOMINAL_CALIB_CP 25
+
+#define FUSE_VSENSOR_CALIB 0x08c
+#define FUSE_TSENSOR_COMMON 0x180
+
/**
* struct tegra_tsensor_group - SOC_THERM sensor group data
* @name: short name of the temperature sensor group
@@ -109,9 +116,13 @@ struct tsensor_group_thermtrips {
struct tegra_soctherm_fuse {
u32 fuse_base_cp_mask, fuse_base_cp_shift;
+ u32 fuse_shift_cp_mask, fuse_shift_cp_shift;
u32 fuse_base_ft_mask, fuse_base_ft_shift;
u32 fuse_shift_ft_mask, fuse_shift_ft_shift;
- u32 fuse_spare_realignment;
+ u32 fuse_shift_cp_bits, fuse_shift_ft_bits;
+ u32 fuse_common_reg, fuse_spare_realignment;
+ u32 nominal_calib_cp, nominal_calib_ft;
+ bool lower_precision;
};
struct tsensor_shared_calib {
diff --git a/drivers/thermal/tegra/tegra124-soctherm.c b/drivers/thermal/tegra/tegra124-soctherm.c
index 20ad27f4d1a1..dd4dd7e9014d 100644
--- a/drivers/thermal/tegra/tegra124-soctherm.c
+++ b/drivers/thermal/tegra/tegra124-soctherm.c
@@ -200,11 +200,19 @@ static const struct tegra_tsensor tegra124_tsensors[] = {
static const struct tegra_soctherm_fuse tegra124_soctherm_fuse = {
.fuse_base_cp_mask = 0x3ff,
.fuse_base_cp_shift = 0,
+ .fuse_shift_cp_mask = 0x1f,
+ .fuse_shift_cp_shift = 0,
.fuse_base_ft_mask = 0x7ff << 10,
.fuse_base_ft_shift = 10,
.fuse_shift_ft_mask = 0x1f << 21,
.fuse_shift_ft_shift = 21,
+ .fuse_shift_cp_bits = 5,
+ .fuse_shift_ft_bits = 4,
+ .fuse_common_reg = FUSE_TSENSOR_COMMON,
.fuse_spare_realignment = 0x1fc,
+ .nominal_calib_cp = NOMINAL_CALIB_CP,
+ .nominal_calib_ft = NOMINAL_CALIB_FT,
+ .lower_precision = false,
};
const struct tegra_soctherm_soc tegra124_soctherm = {
diff --git a/drivers/thermal/tegra/tegra132-soctherm.c b/drivers/thermal/tegra/tegra132-soctherm.c
index b76308fdad9e..926836426688 100644
--- a/drivers/thermal/tegra/tegra132-soctherm.c
+++ b/drivers/thermal/tegra/tegra132-soctherm.c
@@ -200,11 +200,19 @@ static struct tegra_tsensor tegra132_tsensors[] = {
static const struct tegra_soctherm_fuse tegra132_soctherm_fuse = {
.fuse_base_cp_mask = 0x3ff,
.fuse_base_cp_shift = 0,
+ .fuse_shift_cp_mask = 0x1f,
+ .fuse_shift_cp_shift = 0,
.fuse_base_ft_mask = 0x7ff << 10,
.fuse_base_ft_shift = 10,
.fuse_shift_ft_mask = 0x1f << 21,
.fuse_shift_ft_shift = 21,
+ .fuse_shift_cp_bits = 5,
+ .fuse_shift_ft_bits = 4,
+ .fuse_common_reg = FUSE_TSENSOR_COMMON,
.fuse_spare_realignment = 0x1fc,
+ .nominal_calib_cp = NOMINAL_CALIB_CP,
+ .nominal_calib_ft = NOMINAL_CALIB_FT,
+ .lower_precision = false,
};
const struct tegra_soctherm_soc tegra132_soctherm = {
diff --git a/drivers/thermal/tegra/tegra210-soctherm.c b/drivers/thermal/tegra/tegra210-soctherm.c
index d0ff793f18c5..2877a7b43f2a 100644
--- a/drivers/thermal/tegra/tegra210-soctherm.c
+++ b/drivers/thermal/tegra/tegra210-soctherm.c
@@ -201,11 +201,19 @@ static const struct tegra_tsensor tegra210_tsensors[] = {
static const struct tegra_soctherm_fuse tegra210_soctherm_fuse = {
.fuse_base_cp_mask = 0x3ff << 11,
.fuse_base_cp_shift = 11,
+ .fuse_shift_cp_mask = 0x1f,
+ .fuse_shift_cp_shift = 0,
.fuse_base_ft_mask = 0x7ff << 21,
.fuse_base_ft_shift = 21,
.fuse_shift_ft_mask = 0x1f << 6,
.fuse_shift_ft_shift = 6,
+ .fuse_shift_cp_bits = 5,
+ .fuse_shift_ft_bits = 4,
+ .fuse_common_reg = FUSE_TSENSOR_COMMON,
.fuse_spare_realignment = 0,
+ .nominal_calib_cp = NOMINAL_CALIB_CP,
+ .nominal_calib_ft = NOMINAL_CALIB_FT,
+ .lower_precision = false,
};
static struct tsensor_group_thermtrips tegra210_tsensor_thermtrips[] = {
--
2.43.0
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