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device-purism-librem5: Disable modem power management (MR 3902)

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According to
https://source.puri.sm/Librem5/linux/-/issues/303#note_160864 enabling
the modem power management results in a unreliable modem, but more power
savings.

With power management on the modem can disconnect at any time,
including during calls. This makes the Librem 5 a very bad phone.
Instead let's ensure it works as a phone with a semi-reliable modem
(there is still the sleep/resume issue
https://source.puri.sm/Librem5/linux/-/issues/423) at the cost of
battery life.

As the Librem5's battery life is already poor, a little bit worse
isn't much different. Either way you need an external battery pack.

Signed-off-by: Alistair Francis <alistair@alistair23.me>

[ci:skip-build] already built successfully in CI
This commit is contained in:
Alistair Francis 2023-02-24 20:32:22 +10:00 committed by Clayton Craft
parent 92efdacfbf
commit e1efe18136
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GPG key ID: 4A4CED6D7EDF950A
2 changed files with 29 additions and 1 deletions
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26
device/main/device-purism-librem5/0001-librem5-pm.udev-disable-PM-for-broadmobi-modem.patch Normal file
View file

@ -0,0 +1,26 @@
From 1b280dda3734d42b02474a0628314afc58c2065f Mon Sep 17 00:00:00 2001
From: Clayton Craft <clayton@craftyguy.net>
Date: Thu, 17 Jun 2021 16:59:55 -0700
Subject: [PATCH] librem5-pm.udev: disable PM for broadmobi modem
Workaround for https://source.puri.sm/Librem5/linux-next/-/issues/303
---
debian/librem5-base-defaults.librem5-pm.udev | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/debian/librem5-base-defaults.librem5-pm.udev b/debian/librem5-base-defaults.librem5-pm.udev
index dc005bb..6abdb10 100644
--- a/debian/librem5-base-defaults.librem5-pm.udev
+++ b/debian/librem5-base-defaults.librem5-pm.udev
@@ -9,7 +9,7 @@ DEVPATH=="/devices/platform/soc@0/38100000.usb", TEST=="power/control", ATTR{pow
### Enable power management for internal USB devices:
# Broadmobi BM818
-SUBSYSTEM=="usb", ATTRS{idVendor}=="2020", ATTR{idProduct}=="2060", TEST=="power/control", ATTR{power/control}="auto"
+SUBSYSTEM=="usb", ATTRS{idVendor}=="2020", ATTR{idProduct}=="2060", TEST=="power/control", ATTR{power/control}="on"
SUBSYSTEM=="usb", ATTRS{idVendor}=="2020", ATTR{idProduct}=="2060", TEST=="power/autosuspend_delay_ms", ATTR{power/autosuspend_delay_ms}="2000"
# Cinterion PLS8
--
2.32.0

4
device/main/device-purism-librem5/APKBUILD
View file

@ -4,7 +4,7 @@
# Co-Maintainer: Newbyte <newbyte@postmarketos.org>
pkgname=device-purism-librem5
pkgdesc="Purism Librem 5 Phone"
pkgver=1.39
pkgver=1.40
pkgrel=0
_confver=54
_purismrel=1
@ -41,6 +41,7 @@ source="
uboot-script.cmd
xorg.conf
70-librem5-xwayland-accel.sh
0001-librem5-pm.udev-disable-PM-for-broadmobi-modem.patch
0002-udev-cameras-use-correct-path-for-modprobe-on-Alpine.patch
l5-ship-mode.initd
l5-lockdown-support.initd
@ -200,6 +201,7 @@ a0740e405781ec6ef765fdc9f5700c95adbb241c45c97b9384ba68cdece662cb216ca5918640042f
659c1801b6172c137db091a5850b467b5c667a5d0392c3d4f9cd767916ded20f09a494ad3c07cae09e9151909aca13208d3d0c681e9d4ec15681078c7046444b uboot-script.cmd
1cbc65cf2cb8fad4b0332d012a0256a266205b9b64371f5c0dae09dbb7f1e45b254e8c43993b896097e9d7035a72d547d9bce1ab2133addc56a5abdb80b44616 xorg.conf
fad386071fc45f9880a94cc8004fabd5d98b3e6a12606c98d8e72e0208f22ab54f03b921f5967a959782507e2bff67d2fa92e46d8cd242011a3afcdbda529279 70-librem5-xwayland-accel.sh
f535b43b8defe75e72049e4eee181bfe821f6304a096413bccf6d08c8bb11b947fa1fee305af85616abd778745fadd52ebd610c2d135a4f907915b99ab2c526a 0001-librem5-pm.udev-disable-PM-for-broadmobi-modem.patch
b45749fcddfd65a302b502bcabfa5828d1b63e45d844fd50e44009a756b919db20fe9526102947c0f0dfcdffe4a037e5050fe1b24fb915933ce0837f49759378 0002-udev-cameras-use-correct-path-for-modprobe-on-Alpine.patch
c723764d507ccd4b04aa5ce79b1d1ebc131873cdc37a943cb0f92b8a08a3c69eb9e0d31fcd4589fd8c40a9676bae9897e4f12ec2ebe4db8214ac85669ef35a53 l5-ship-mode.initd
f4b314d553655f7975445ac0a33099923e20dabb082c07e2cf6a78e4118c143d777dd4ad2c09cbc388600bdefe8deb3073fbd15b238772ddf09c66ac46415590 l5-lockdown-support.initd