From 95e50bedced79fe16c8d99095944215929699e38 Mon Sep 17 00:00:00 2001
From: cuu <gnubsd@me.com>
Date: Mon, 3 Jun 2024 00:30:18 -0700
Subject: [PATCH] Update cm3 kernel patch for latest rpi kernel rpi-4.19.y Add
 cm3 kernel compiling tips

---
 Code/patch/cm3/README.md                      | 59 +++++++++++++++++++
 ...19_v0.1.patch => devterm-4.19_v0.11.patch} |  4 +-
 2 files changed, 61 insertions(+), 2 deletions(-)
 create mode 100644 Code/patch/cm3/README.md
 rename Code/patch/cm3/{devterm-4.19_v0.1.patch => devterm-4.19_v0.11.patch} (99%)

diff --git a/Code/patch/cm3/README.md b/Code/patch/cm3/README.md
new file mode 100644
index 0000000..5796978
--- /dev/null
+++ b/Code/patch/cm3/README.md
@@ -0,0 +1,59 @@
+# How to compile devterm cm3 kernel
+
+## Clone kernel source code 
+```
+git clone https://github.com/raspberrypi/linux.git  
+cd linux
+git checkout remotes/origin/rpi-4.19.y
+```
+
+## Get cross compile tools
+```
+git clone https://github.com/raspberrypi/tools.git
+```
+
+## Compiling process
+```
+#must use the rpi arm-bcm2708 cross compiler tools
+
+cd linux
+git apply devterm-4.19_v0.11.patch #get patch from https://github.com/clockworkpi/DevTerm/tree/main/Code/patch/cm3
+
+export PATH=/data/github/raspberrypi/tools/arm-bcm2708/arm-linux-gnueabihf/bin/:$PATH ## change the arm-bcm2708 tools location for yourself
+
+KERNEL=kernel7l make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2709_defconfig
+KERNEL=kernel7l make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- -j3
+INSTALL_MOD_PATH=./modules 
+rm -rf $INSTALL_MOD_PATH
+make modules_install
+
+rm modules/lib/modules/*/build
+rm modules/lib/modules/*/source
+
+```
+
+## /boot/config.txt
+
+In config.txt,I renamed kernel7.img to devterm-kernel7.img
+
+```
+ignore_lcd=1
+dtoverlay=vc4-kms-v3d,audio=0,cma-384
+dtoverlay=devterm-pmu
+dtoverlay=devterm-panel
+dtoverlay=devterm-wifi
+dtoverlay=devterm-bt
+dtoverlay=devterm-misc
+gpio=5=op,dh
+gpio=9=op,dh
+gpio=10=ip,np
+gpio=11=op,dh
+
+enable_uart=1
+dtparam=spi=on
+dtoverlay=spi-gpio35-39
+
+dtparam=audio=on
+kernel=devterm-kernel7.img
+```
+
diff --git a/Code/patch/cm3/devterm-4.19_v0.1.patch b/Code/patch/cm3/devterm-4.19_v0.11.patch
similarity index 99%
rename from Code/patch/cm3/devterm-4.19_v0.1.patch
rename to Code/patch/cm3/devterm-4.19_v0.11.patch
index b926087..6ff1b02 100644
--- a/Code/patch/cm3/devterm-4.19_v0.1.patch
+++ b/Code/patch/cm3/devterm-4.19_v0.11.patch
@@ -1,5 +1,5 @@
 diff --git a/arch/arm/boot/dts/overlays/Makefile b/arch/arm/boot/dts/overlays/Makefile
-index 9863b50ad6da..4ec57b4a087f 100644
+index d96ac08a606e..2f52093b14ce 100644
 --- a/arch/arm/boot/dts/overlays/Makefile
 +++ b/arch/arm/boot/dts/overlays/Makefile
 @@ -27,6 +27,11 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
@@ -11,9 +11,9 @@ index 9863b50ad6da..4ec57b4a087f 100644
 +	devterm-panel.dtbo \
 +	devterm-pmu.dtbo \
 +	devterm-wifi.dtbo \
+ 	chipdip-i2s-master-dac.dtbo \
  	dht11.dtbo \
  	dionaudio-loco.dtbo \
- 	dionaudio-loco-v2.dtbo \
 diff --git a/arch/arm/boot/dts/overlays/devterm-bt-overlay.dts b/arch/arm/boot/dts/overlays/devterm-bt-overlay.dts
 new file mode 100755
 index 000000000000..4b634fdd3bda