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Subject[PATCH 5.10 198/563] hwmon: (mr75203) fix wrong power-up delay value
From: Arseny Demidov <>

[ Upstream commit a8d6d4992ad9d92356619ac372906bd29687bb46 ]

In the file mr75203.c we have a macro named POWER_DELAY_CYCLE_256,
the correct value should be 0x100. The register ip_tmr is expressed
in units of IP clk cycles, in accordance with the datasheet.
Typical power-up delays for Temperature Sensor are 256 cycles i.e. 0x100.

Fixes: 9d823351a337 ("hwmon: Add hardware monitoring driver for Moortec MR75203 PVT controller")
Signed-off-by: Arseny Demidov <>
Signed-off-by: Guenter Roeck <>
Signed-off-by: Sasha Levin <>
drivers/hwmon/mr75203.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwmon/mr75203.c b/drivers/hwmon/mr75203.c
index 18da5a25e89ab..046523d47c29b 100644
--- a/drivers/hwmon/mr75203.c
+++ b/drivers/hwmon/mr75203.c
@@ -93,7 +93,7 @@
#define VM_CH_REQ BIT(21)

#define IP_TMR 0x05
-#define POWER_DELAY_CYCLE_256 0x80
+#define POWER_DELAY_CYCLE_256 0x100
#define POWER_DELAY_CYCLE_64 0x40

#define PVT_POLL_DELAY_US 20

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