Rockbox open source high quality audio player as a Music Player Daemon
mpris
rockbox
mpd
libadwaita
audio
rust
zig
deno
jz4760: Move 11/22/44/88KHz back onto the PLL
PLL1 clock for those frequencies has been dropped from 508 to 169.5 MHz,
so it's still a respectable reduction.
(I'm not sure how/why it ever worked with the XTAL source, but it did,
and was off by an audible amount)
Change-Id: I614d87e7dfdfe9210702b9c646d3863c06d6780b
+16
-8
+16
-8
firmware/target/mips/ingenic_jz47xx/codec-jz4760.c
+16
-8
firmware/target/mips/ingenic_jz47xx/codec-jz4760.c
···
219
219
func_mode = 0;
220
220
break;
221
221
case HW_FREQ_11: // 0.7056 MHz
222
-
pll1_speed = 0;
223
-
mclk_div = 272;
222
+
pll1_speed = 508000000 / 3;
223
+
mclk_div = 180 / 3;
224
+
// pll1_speed = 0;
225
+
// mclk_div = 272;
224
226
bclk_div = 4;
225
227
func_mode = 0;
226
228
break;
···
237
239
func_mode = 0;
238
240
break;
239
241
case HW_FREQ_22: // 1.4112 MHz
240
-
pll1_speed = 0;
241
-
mclk_div = 136;
242
+
pll1_speed = 508000000 / 3;
243
+
mclk_div = 90 / 3;
244
+
// pll1_speed = 0;
245
+
// mclk_div = 136;
242
246
bclk_div = 4;
243
247
func_mode = 0;
244
248
break;
···
256
260
func_mode = 0;
257
261
break;
258
262
case HW_FREQ_44: // 2.8224 MHz
259
-
pll1_speed = 0;
260
-
mclk_div = 68;
263
+
pll1_speed = 508000000 / 3;
264
+
mclk_div = 45 / 3;
265
+
// pll1_speed = 0;
266
+
// mclk_div = 68;
261
267
bclk_div = 4;
262
268
dem = CS4398_DEM_44100;
263
269
func_mode = 0;
···
276
282
func_mode = 1;
277
283
break;
278
284
case HW_FREQ_88: // 5.6448 MHz
279
-
pll1_speed = 0;
280
-
mclk_div = 68;
285
+
pll1_speed = 508000000 / 3;
286
+
mclk_div = 45 / 3;
287
+
// pll1_speed = 0;
288
+
// mclk_div = 68;
281
289
bclk_div = 2;
282
290
func_mode = 1;
283
291
break;