CyanogenMod/android_device_lge_p500 — comment on commit 2784ae01cdfba63d45197243a679d47d86a25152
File:  line 0
By androidmeda:

P500 FM Radio Bug: Sound is noisy

Open fm radio and listen for 5 minutes. After that the sound is noisy and after 10 minutes, just noise, no fm sound.
Geeks phone (zero) has the same chip (bcm4325)

I have found this in init.qcom.bt.sh:
cd /system/bin
./brcm_patchram_plus -d --patchram /etc/BCM4325D1_004.002.004.0230.0244.hcd /dev/ttyHS0
logi "Write PCM setting..."
./bt_tool.dat /dev/ttyHS0 hcicmd 3f 1c 00 04 00 00 00
logi "Write Sleep mode setting..."
./bt_tool.dat /dev/ttyHS0 hcicmd 3f 27 01 01 10 00 00 00 00 00 00 00 00 00
logi "Change baudrate to 3000000"
./brcm_patchram_plus -d -baudrate 3000000 /dev/ttyHS0
exit_code_hci_qcomm_download=$?

See also:
http://r.cyanogenmod.com/#change,11359
https://github.com/CyanogenMod/android_device_geeksphone_zero/tree/gingerbread/libaudio