65 lines
2.2 KiB
Diff
65 lines
2.2 KiB
Diff
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From 44944d5fe90cd5a71b60d8393324c6a90779e635 Mon Sep 17 00:00:00 2001
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From: "Chen.Zhao" <zhao.chen@luxshare-ict.com>
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Date: Thu, 19 Sep 2024 17:08:07 +0800
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Subject: [PATCH] Force set pmbus page to 4 to fix Delta PSU reading error
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issue Because Delta PSU page command has bug. It not report error when set
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page above 3. It will make pmbus logic confusion. So forece set max page to
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3.
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---
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drivers/hwmon/pmbus/pmbus.c | 17 ++++++++++++++++-
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1 file changed, 16 insertions(+), 1 deletion(-)
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diff --git a/drivers/hwmon/pmbus/pmbus.c b/drivers/hwmon/pmbus/pmbus.c
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index 9fa5e237a03f..2ac33333e7d2 100644
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--- a/drivers/hwmon/pmbus/pmbus.c
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+++ b/drivers/hwmon/pmbus/pmbus.c
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@@ -78,6 +78,11 @@ static void pmbus_find_sensor_groups(struct i2c_client *client,
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PMBUS_STATUS_TEMPERATURE))
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info->func[0] |= PMBUS_HAVE_STATUS_TEMP;
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+ /*
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+ * because delta psu page commad has bug, it will make pmbus mask confusion
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+ * force set pmbus mask to enable read current, voltage, fan, temperature and power
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+ */
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+ info->func[0] = 0x3f27d;
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rv = pmbus_query_register(client, PMBUS_READ_EIN);
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/* only direct format for EIN and EOUT supported */
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if (rv > 0 && (rv & PB_QUERY_COMMAND_SUPPORTED) &&
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@@ -97,6 +102,11 @@ static void pmbus_find_sensor_groups(struct i2c_client *client,
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info->m[PSC_POWER_AVERAGE] = 1;
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}
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+ /*
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+ * because delta psu page commad has bug, it will make pmbus mask confusion.
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+ * remove read other page information.
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+ */
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+ #if 0
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/* Sensors detected on all pages */
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for (page = 0; page < info->pages; page++) {
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if (pmbus_check_word_register(client, page, PMBUS_READ_VOUT)) {
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@@ -114,6 +124,7 @@ static void pmbus_find_sensor_groups(struct i2c_client *client,
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if (pmbus_check_word_register(client, page, PMBUS_READ_POUT))
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info->func[page] |= PMBUS_HAVE_POUT;
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}
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+ #endif
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}
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/*
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@@ -135,7 +146,11 @@ static int pmbus_identify(struct i2c_client *client,
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int page;
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for (page = 1; page < PMBUS_PAGES; page++) {
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- if (pmbus_set_page(client, page, 0xff) < 0)
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+ /*
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+ * because delta psu page commad has bug, it will make pmbus mask confusion
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+ * force set max page to 4.
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+ */
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+ if ((pmbus_set_page(client, page, 0xff) < 0) || (page > 3))
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break;
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}
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pmbus_set_page(client, 0, 0xff);
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--
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2.25.1
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