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| author | Amaury Pouly <amaury.pouly@gmail.com> | 2017-11-09 23:01:24 +0100 |
|---|---|---|
| committer | Solomon Peachy <pizza@shaftnet.org> | 2024-10-27 09:10:15 -0400 |
| commit | d22bb548b23c4281fc0fa0862333d912069752ae (patch) | |
| tree | 285e61d230e9175647a520f589566bce978689c7 /firmware | |
| parent | 977308c95ca57ebbf00139843a8dc03f6c743a11 (diff) | |
| download | rockbox-d22bb548b23c4281fc0fa0862333d912069752ae.tar.gz rockbox-d22bb548b23c4281fc0fa0862333d912069752ae.zip | |
rda5802: document some registers
This information is available in the RDA5802N or RDA5807 datasheet. I suspect
that register SYSCONFIG6 is not actually used by the tuner. Based on an
obscure statement in the datasheet, I guess SYSCONFIG5 is a frequency in Khz
called freq_direct that offsets the lower band frequency (56/67 MHz) but
1) it is not enabled (FREQ_MODE=0) and 2) it is not clear if this offset is
really just to avoid interference (ie the RF and IF are simply shifted by this
amount) or an actual offset.
Change-Id: Ia469f5370aee7c8c3390324d0cef1193c64df755
Diffstat (limited to 'firmware')
| -rw-r--r-- | firmware/drivers/tuner/rda5802.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/firmware/drivers/tuner/rda5802.c b/firmware/drivers/tuner/rda5802.c index 3f122714bd..55e775e985 100644 --- a/firmware/drivers/tuner/rda5802.c +++ b/firmware/drivers/tuner/rda5802.c | |||
| @@ -48,9 +48,9 @@ | |||
| 48 | #define SYSCONFIG1 0x4 | 48 | #define SYSCONFIG1 0x4 |
| 49 | #define SYSCONFIG2 0x5 | 49 | #define SYSCONFIG2 0x5 |
| 50 | #define SYSCONFIG3 0x6 | 50 | #define SYSCONFIG3 0x6 |
| 51 | #define SYSCONFIG4 0x7 /* undocumented */ | 51 | #define SYSCONFIG4 0x7 |
| 52 | #define SYSCONFIG5 0x8 /* undocumented */ | 52 | #define SYSCONFIG5 0x8 |
| 53 | #define SYSCONFIG6 0x9 /* undocumented */ | 53 | #define SYSCONFIG6 0x9 /* suspected not to exists */ |
| 54 | #define READCHAN 0xA | 54 | #define READCHAN 0xA |
| 55 | #define STATUSRSSI 0xB | 55 | #define STATUSRSSI 0xB |
| 56 | 56 | ||
| @@ -81,7 +81,7 @@ | |||
| 81 | 81 | ||
| 82 | /* SYSCONFIG1 (0x4) */ | 82 | /* SYSCONFIG1 (0x4) */ |
| 83 | #define SYSCONFIG1_DE (0x1 << 11) | 83 | #define SYSCONFIG1_DE (0x1 << 11) |
| 84 | #define SYSCONFIG1_SOFTMUTE_EN (0x1 << 9) | 84 | #define SYSCONFIG1_SOFTMUTE_EN (0x1 << 9) |
| 85 | 85 | ||
| 86 | /* SYSCONFIG2 (0x5) */ | 86 | /* SYSCONFIG2 (0x5) */ |
| 87 | #define SYSCONFIG2_VOLUME (0xF << 0) | 87 | #define SYSCONFIG2_VOLUME (0xF << 0) |
| @@ -105,9 +105,9 @@ static uint16_t cache[16] = { | |||
| 105 | [SYSCONFIG1] = 0x0200, /* SYSCONFIG1_SOFTMUTE_EN */ | 105 | [SYSCONFIG1] = 0x0200, /* SYSCONFIG1_SOFTMUTE_EN */ |
| 106 | [SYSCONFIG2] = 0x867F, /* INT_MODE (def), SEEKTH=1100b, LNA_PORT_SEL=LNAN, | 106 | [SYSCONFIG2] = 0x867F, /* INT_MODE (def), SEEKTH=1100b, LNA_PORT_SEL=LNAN, |
| 107 | LNA_ICSEL=3.0mA, VOLUME=max */ | 107 | LNA_ICSEL=3.0mA, VOLUME=max */ |
| 108 | [SYSCONFIG3] = 0x8000, /* I2S slave mode */ | 108 | [SYSCONFIG3] = 0x8000, /* RSVD */ |
| 109 | [SYSCONFIG4] = 0x4712, /* undocumented, affects stereo blend */ | 109 | [SYSCONFIG4] = 0x4712, /* TH_SOFRBLEND=34dB, 65M_50M MODE=65~76MHz, RSVD, SEEK_TH_OLD=4, SOFTBLEND_EN */ |
| 110 | [SYSCONFIG5] = 0x5EC6, /* undocumented */ | 110 | [SYSCONFIG5] = 0x5EC6, /* FREQ_DIRECT=24262kHz (unused) */ |
| 111 | [SYSCONFIG6] = 0x0000 /* undocumented */ | 111 | [SYSCONFIG6] = 0x0000 /* undocumented */ |
| 112 | }; | 112 | }; |
| 113 | 113 | ||