This is a note to let you know that I've just added the patch titled
thermal/drivers/mediatek/lvts_thermal: Disable undesired interrupts
to the 6.5-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
thermal-drivers-mediatek-lvts_thermal-disable-undesi.patch
and it can be found in the queue-6.5 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <stable@xxxxxxxxxxxxxxx> know about it.
commit edebe731113c186d20f5d4316237787177b8e2ec
Author: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
Date: Thu Jul 6 11:37:35 2023 -0400
thermal/drivers/mediatek/lvts_thermal: Disable undesired interrupts
[ Upstream commit 487bf099e85b724c824f5fafaf93c6749c4d2120 ]
Out of the many interrupts supported by the hardware, the only ones of
interest to the driver currently are:
* The temperature went over the high offset threshold, for any of the
sensors
* The temperature went below the low offset threshold, for any of the
sensors
* The temperature went over the stage3 threshold
These are the only thresholds configured by the driver through the
OFFSETH, OFFSETL, and PROTTC registers, respectively.
The current interrupt mask in LVTS_MONINT_CONF, enables many more
interrupts, including data ready on sensors for both filtered and
immediate mode. These are not only not handled by the driver, but they
are also triggered too often, causing unneeded overhead. Disable these
unnecessary interrupts.
The meaning of each bit can be seen in the comment describing
LVTS_MONINTST in the IRQ handler.
Fixes: f5f633b18234 ("thermal/drivers/mediatek: Add the Low Voltage Thermal Sensor driver")
Signed-off-by: Nícolas F. R. A. Prado <nfraprado@xxxxxxxxxxxxx>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@xxxxxxxxxxxxx>
Reviewed-by: Alexandre Mergnat <amergnat@xxxxxxxxxxxx>
Signed-off-by: Daniel Lezcano <daniel.lezcano@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230706153823.201943-5-nfraprado@xxxxxxxxxxxxx
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
diff --git a/drivers/thermal/mediatek/lvts_thermal.c b/drivers/thermal/mediatek/lvts_thermal.c
index 25cdcec4a50c9..02e7af4619a2c 100644
--- a/drivers/thermal/mediatek/lvts_thermal.c
+++ b/drivers/thermal/mediatek/lvts_thermal.c
@@ -65,7 +65,7 @@
#define LVTS_HW_FILTER 0x2
#define LVTS_TSSEL_CONF 0x13121110
#define LVTS_CALSCALE_CONF 0x300
-#define LVTS_MONINT_CONF 0x9FBF7BDE
+#define LVTS_MONINT_CONF 0x8300318C
#define LVTS_INT_SENSOR0 0x0009001F
#define LVTS_INT_SENSOR1 0x001203E0
