[STM32MP25] BME280 Bring-up: DTS 패치 + Yocto 커널 모듈 추가

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# (이미 envsetup.sh로 Yocto bash 환경을 올린 상태에서)
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KSRC=$(bitbake -e virtual/kernel | sed -n 's/^S="\([^"]*\)".*/\1/p')
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echo "KSRC=$KSRC"
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ls -la "$KSRC"

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bitbake -c fetch  virtual/kernel
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bitbake -c unpack virtual/kernel
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bitbake -c patch  virtual/kernel

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cd "$KSRC"
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DTS=arch/arm64/boot/dts/st/stm32mp257f-dk.dts
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# 원본 백업(같은 디렉토리 안에 둠)
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cp -v "$DTS" "${DTS}.orig"

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# 커널 소스 트리 경로(예: 현재 사용 중인 kernel-source)
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KSRC=$(bitbake -e virtual/kernel | sed -n 's/^S="\([^"]*\)".*/\1/p')
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cd "$KSRC"
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git status

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cd "$KSRC"
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git add arch/arm64/boot/dts/st/stm32mp257f-dk.dts
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git commit -m "arm64: dts: stm32mp257f-dk: add bme280 on i2c2@0x76"
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git format-patch -1

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# 방금 생성된 patch 파일을 찾아 파일명 고정
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PATCH_OUT=$(ls -t 0001-*.patch | head -n 1)
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mv -v "$PATCH_OUT" 0001-stm32mp257f-dk-add-bme280-i2c2-0x76.patch
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PATCH_OUT="$KSRC/0001-stm32mp257f-dk-add-bme280-i2c2-0x76.patch"

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# 주의: 로컬 커밋/변경이 없을 때만
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git reset --hard HEAD~1

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DST_DIR=~/work/stm32mp257/stm32mp257f-bsp-lab/yocto/meta-myboard/recipes-kernel/linux/linux-stm32mp/openstlinux-weston
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install -d "$DST_DIR"
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cp -v "$PATCH_OUT" "$DST_DIR/"

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ls -l ~/work/stm32mp257/stm32mp257f-bsp-lab/yocto/meta-myboard/recipes-kernel/linux/linux-stm32mp/openstlinux-weston/

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bitbake-layers show-appends | grep -i "linux-stm32mp" || true
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# SRC_URI에 patch가 실제로 포함됐는지 확인
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bitbake -e virtual/kernel | egrep '^(FILESEXTRAPATHS=|SRC_URI=)' | sed -n '1,160p'

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bitbake -c patch virtual/kernel -f

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bitbake -c menuconfig virtual/kernel

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bitbake -c diffconfig virtual/kernel

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KWORKDIR=$(bitbake -e virtual/kernel | sed -n 's/^WORKDIR="\([^"]*\)".*/\1/p')
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FRAG=$(find "$KWORKDIR" -maxdepth 5 -name "fragment.cfg" | head -n 1)
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echo "FRAG=$FRAG"

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CFG_DST=~/work/stm32mp257/stm32mp257f-bsp-lab/yocto/meta-myboard/recipes-kernel/linux/linux-stm32mp/openstlinux-weston/bmp280.cfg
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install -d "$(dirname "$CFG_DST")"
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cp -v "$FRAG" "$CFG_DST"

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bitbake -e virtual/kernel | egrep '^(PN=|PREFERRED_PROVIDER_virtual/kernel=|S=|KERNEL_CONFIG_FRAGMENTS=|KERNEL_FEATURES=|KCONFIG_MODE=|KBUILD_DEFCONFIG=)'

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bitbake linux-stm32mp -c cleansstate
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bitbake linux-stm32mp -c compile
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bitbake linux-stm32mp -c deploy

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bitbake st-image-weston

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ls -al tmp-glibc/deploy/images/stm32mp25-disco | head
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ls -al tmp-glibc/deploy/images/stm32mp25-disco/*.dtb 2>/dev/null || true

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cd tmp-glibc/deploy/images/stm32mp25-disco
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find flashlayout_st-image-weston -maxdepth 2 -type f -name "FlashLayout_sdcard*.tsv" -print

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cd tmp-glibc/deploy/images/stm32mp25-disco
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# 예시: optee FlashLayout
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TSV=flashlayout_st-image-weston/optee/FlashLayout_sdcard_stm32mp257f-dk-optee.tsv
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./scripts/create_sdcard_from_flashlayout.sh "$TSV"
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ls -al *.raw 2>/dev/null || true

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lsblk -p

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SD=/dev/sdX   # 반드시 본인 SD 카드 디바이스로 변경
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sudo umount ${SD}?* 2>/dev/null || true
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RAW=$(ls -t *.raw | head -n 1)
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sudo dd if="$RAW" of="$SD" bs=8M conv=fsync status=progress
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sync

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sudo partprobe "$SD" || true
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lsblk "$SD"

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ls -l /sys/bus/i2c/devices/0-0076
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cat /sys/bus/i2c/devices/0-0076/modalias
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cat /sys/bus/i2c/devices/0-0076/of_node/compatible 2>/dev/null || true

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find /lib/modules/$(uname -r) -name "*bmp280*" | head
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modprobe bmp280_i2c

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ls -l /sys/bus/i2c/devices/0-0076/driver 2>/dev/null || echo "NOT BOUND"
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ls /sys/bus/i2c/drivers | grep -E "bmp280|bme280" || true

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DEV=$(for d in /sys/bus/iio/devices/iio:device*; do
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  [ "$(cat "$d/name")" = "bme280" ] && echo "$d" && break
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done)
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echo "DEV=$DEV"
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cat "$DEV/in_temp_input"
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cat "$DEV/in_pressure_input"
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cat "$DEV/in_humidityrelative_input" 2>/dev/null || true