From 8ac6c7a54ed1b98d142dce24b11c6de6a1e239a5 Mon Sep 17 00:00:00 2001
From: hc <hc@nodka.com>
Date: Tue, 22 Oct 2024 10:36:11 +0000
Subject: [PATCH] 修改4g拨号为QMI,需要在系统里后台执行quectel-CM
---
kernel/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/kernel/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator b/kernel/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator
index 4d63a79..42214b4 100644
--- a/kernel/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator
+++ b/kernel/Documentation/ABI/testing/sysfs-driver-bd9571mwv-regulator
@@ -6,11 +6,13 @@
if DDR power rails will be kept powered during system suspend.
("on"/"1" = enabled, "off"/"0" = disabled).
Two types of power switches (or control signals) can be used:
+
A. With a momentary power switch (or pulse signal), DDR
Backup Mode is enabled by default when available, as the
PMIC will be configured only during system suspend.
B. With a toggle power switch (or level signal), the
following steps must be followed exactly:
+
1. Configure PMIC for backup mode, to change the role of
the accessory power switch from a power switch to a
wake-up switch,
@@ -20,8 +22,10 @@
3. Suspend system,
4. Switch accessory power switch on, to resume the
system.
+
DDR Backup Mode must be explicitly enabled by the user,
to invoke step 1.
+
See also Documentation/devicetree/bindings/mfd/bd9571mwv.txt.
Users: User space applications for embedded boards equipped with a
BD9571MWV PMIC.
--
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