Motorola XT897
焊接UART
參考資料：
1. Serial_debugging:Cable_schematics_mobileaction=toggle_view_mobile
雖然司徒一直在找尋XT897的UART位置，但是，始終無法如願，如今PostMarketOS終於找到XT897的UART位置，這真是太令人振奮的消息，因為有了UART協助，在移植方面會方便許多，也讓這台機器更具可玩性，不過，司徒依照PostMarketOS的位置焊接UART，發現UART RXD位置標示錯誤，司徒整理UART改造過程如下。
第2腳位：RXD
第3腳位：TXD
為了不要破壞漂亮的外殼，因此，司徒仿照PostMarketOS的作法，使用3.5mm耳機孔當作UART輸出腳位，原本PCB焊點需要使用膠帶隔離
3.5mm耳機孔腳位如下：
跳線
RXD接到MIC，TXD接到Left Audio
製作一條UART轉接線
雖然XT897 UART是1.8v，不過，司徒連接到USB轉UART(3.3v)是可以動作且沒有燒掉
/dev/ttyHSL0,115200
** Welcome to MBM Next Generation ** [ 1638] Power on status from SBL: 0x00000001 [ 1642] Powerup reason for kernel: 0x00000080 [ 1714] Skip cid validation for gpt_main! [ 1871] validate_partition: successful validation for gpt_main [ 1876] found valid signed GPT [ 1885] cid_get_cid_data - START [ 1887] page_size = 1000 [ 1891] cid_get_cid_data: Version 1 datablock [ 2159] dbval_read_and_validate_cid_datablock - Success [ 2163] dbval_read_and_validate_cid_datablock - END [ 2168] before swap: dbvc_cid =0x0900 [ 2172] after swap: dbvc_cid =0x0009 [ 2175] set_cid_value: dbvc_cid_status =0x F [ 2245] UTAG [CAFE000C]: not found or empty [ 2248] UTAG [CAFE0009]: not found or empty [ 2252] USB serial no: T069502NTW [ 2255] UTAG [CAFE000D]: not found or empty [ 2259] Hardware Revision: 0x82B0 [ 2263] initialize display... [ 2266] Only one panel driver installed, using it by default [ 2475] MOT panel on and power_mode =0x9c [ 2486] not found sp block for MOT_BOTA: type=0x424f5441 [ 2491] there is no bota update information [ 2495] starting app lcd_display [ 2498] starting app mbm [ 2501] shared memory reboot flag 0x05170484 [ 2505] powering up normally [ 2507] show logo in thread [ 2728] Showing logo completed [ 2730] CID provisioned [ 2732] Device is consumer [ 2747] mot_sst_validate_token: Token header incorrect [ 4084] Set MOT SST values [ 4098] Booting Linux [ 4147] token "console" is found. Replace it with "null". [ 4152] CID provisioned [ 4154] Device is consumer [ 4157] UTAG [CAFE0014]: not found or empty [ 4173] UTAG [CAFE0006]: not found or empty [ 4176] UTAG [CAFE0007]: not found or empty [ 4180] cmdline: console=null androidboot.hardware=qcom user_debug=31 loglevel=1 zcache=lz4 androidboot.selinux=permissive selinux=0 androidboot.emmc=true androidboot.serialno=T069502NTWt