linux-kernel - [PATCH v1 1/1] hwmon : (mr75203) fix wrong power-up delay value

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Message-Id: <20211219102239.1112-1-a.demidov@yadro.com>
Date:   Sun, 19 Dec 2021 13:22:39 +0300
From:   Arseny Demidov <arsdemal@...il.com>
To:     linux-hwmon@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        rahul.tanwar@...ux.intel.com, andriy.shevchenko@...el.com,
        Arseny Demidov <a.demidov@...ro.com>
Subject: [PATCH v1 1/1] hwmon : (mr75203) fix wrong power-up delay value

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 <a.demidov@...ro.com>
---
 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 868243dba1ee..1ba1e3145969 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
-- 
2.25.1