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linux/drivers/clk/sunxi-ng
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Chen-Yu Tsai 80a6ec7d5e
clk: sunxi-ng: sun4i: Set VCO and PLL bias current to lowest setting 
The default mid-level PLL bias current setting interferes with sigma
delta modulation. This manifests as decreased audio quality at lower
sampling rates, which sounds like radio broadcast quality, and
distortion noises at sampling rates at 48 kHz or above.

Changing the bias current settings to the lowest gets rid of the
noise.

Fixes: de34485191 ("clk: sunxi-ng: sun4i: Use sigma-delta modulation
		      for audio PLL")
Cc: <stable@vger.kernel.org> # 4.15.x
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
 		2018-09-07 10:20:50 +02:00
..
Kconfig clk: sunxi-ng: add support for H6 PRCM CCU 2018-05-04 17:05:46 +02:00
Makefile clk: sunxi-ng: replace lib-y with obj-y 2018-06-21 08:17:56 -07:00
ccu-sun4i-a10.c clk: sunxi-ng: sun4i: Set VCO and PLL bias current to lowest setting 2018-09-07 10:20:50 +02:00
ccu-sun4i-a10.h clk: sunxi-ng: sun4i: Export video PLLs 2017-10-17 19:32:16 +02:00
ccu-sun5i.c clk: sunxi-ng: sun5i: Use sigma-delta modulation for audio PLL 2017-10-13 09:27:29 +02:00
ccu-sun5i.h clk: sunxi-ng: sun5i: Export video PLLs 2017-06-07 15:32:14 +02:00
ccu-sun6i-a31.c clk: sunxi-ng: a31: Fix CLK_OUT_* clock ops 2018-02-19 08:59:50 +01:00
ccu-sun6i-a31.h clk: sunxi-ng: sun6i: Export video PLLs 2017-09-29 10:46:10 +02:00
ccu-sun8i-a23-a33.h clk: sunxi-ng: Add A33 CCU support 2016-09-10 11:41:19 +02:00
ccu-sun8i-a23.c clk: sunxi-ng: sun8i: a23: Use sigma-delta modulation for audio PLL 2017-10-13 09:27:38 +02:00
ccu-sun8i-a33.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
ccu-sun8i-a83t.c clk: sunxi-ng: a83t: Add M divider to TCON1 clock 2018-01-03 13:45:04 +08:00
ccu-sun8i-a83t.h clk: sunxi-ng: Add driver for A83T CCU 2017-06-07 15:32:16 +02:00
ccu-sun8i-de2.c clk: sunxi-ng: add A64 compatible string 2018-06-27 20:29:08 +02:00
ccu-sun8i-de2.h clk: sunxi-ng: add support for DE2 CCU 2017-06-07 15:32:12 +02:00
ccu-sun8i-h3.c clk: sunxi-ng: h3: h5: Allow some clocks to set parent rate 2018-03-02 08:42:27 +01:00
ccu-sun8i-h3.h clk: sunxi-ng: h3: h5: export CLK_PLL_VIDEO 2018-03-02 08:42:30 +01:00
ccu-sun8i-r.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
ccu-sun8i-r.h clk: sunxi-ng: Fix header guard of ccu-sun8i-r.h 2017-07-27 16:53:47 +02:00
ccu-sun8i-r40.c clk: sunxi-ng: r40: Allow setting parent rate to display related clocks 2018-06-27 19:06:41 +02:00
ccu-sun8i-r40.h clk: sunxi-ng: r40: Export video PLLs 2018-06-27 19:06:56 +02:00
ccu-sun8i-v3s.c clk: Convert to using %pOF instead of full_name 2017-07-21 15:49:54 -07:00
ccu-sun8i-v3s.h clk: sunxi-ng: add support for V3s CCU 2017-01-20 21:39:03 +01:00
ccu-sun9i-a80-de.c clk: sunxi-ng: sun9i-a80: Fix wrong pointer passed to PTR_ERR() 2017-02-06 15:01:29 -08:00
ccu-sun9i-a80-de.h clk: sunxi-ng: Add A80 Display Engine CCU 2017-01-30 08:38:30 +01:00
ccu-sun9i-a80-usb.c clk: sunxi-ng: Add A80 USB CCU 2017-01-30 08:37:51 +01:00
ccu-sun9i-a80-usb.h clk: sunxi-ng: Add A80 USB CCU 2017-01-30 08:37:51 +01:00
ccu-sun9i-a80.c clk: sunxi-ng: a80: Fix audio PLL comment not matching actual code 2017-04-13 14:09:30 +02:00
ccu-sun9i-a80.h clk: sunxi-ng: Add A80 CCU 2017-01-30 08:37:30 +01:00
ccu-sun50i-a64.c clk: sunxi-ng: sun50i: a64: Add 2x fixed post-divider to MMC module clocks 2017-12-07 10:09:57 +01:00
ccu-sun50i-a64.h clk: sunxi-ng: a64: Export PLL_PERIPH0 clock for the PRCM 2017-05-31 21:57:30 +02:00
ccu-sun50i-h6-r.c clk: sunxi-ng: add support for H6 PRCM CCU 2018-05-04 17:05:46 +02:00
ccu-sun50i-h6-r.h clk: sunxi-ng: add support for H6 PRCM CCU 2018-05-04 17:05:46 +02:00
ccu-sun50i-h6.c clk: sunxi-ng: add missing hdmi-slow clock for H6 CCU 2018-03-21 12:27:13 +01:00
ccu-sun50i-h6.h clk: sunxi-ng: add missing hdmi-slow clock for H6 CCU 2018-03-21 12:27:13 +01:00
ccu_common.c Allwinner clock patches for 4.12 2017-04-19 09:02:00 -07:00
ccu_common.h clk: move clock common macros out from vendor directories 2017-12-21 15:00:38 -08:00
ccu_div.c clk: divider: fix incorrect usage of container_of 2017-12-28 15:16:04 -08:00
ccu_div.h clk: sunxi-ng: div: Add support for fixed post-divider 2017-08-14 22:31:46 +08:00
ccu_frac.c clk: sunxi-ng: Wait for lock when using fractional mode 2017-08-01 10:18:23 +08:00
ccu_frac.h clk: sunxi-ng: Wait for lock when using fractional mode 2017-08-01 10:18:23 +08:00
ccu_gate.c clk: sunxi-ng: gate: Support common pre-dividers 2017-03-06 10:25:56 +01:00
ccu_gate.h clk: sunxi-ng: Add gate clock support 2016-07-08 18:04:38 -07:00
ccu_mmc_timing.c clk: sunxi-ng: Add interface to query or configure MMC timing modes. 2017-08-30 14:01:47 +02:00
ccu_mp.c clk: sunxi-ng: Support fixed post-dividers on MP style clocks 2017-12-07 10:09:44 +01:00
ccu_mp.h clk: sunxi-ng: Support fixed post-dividers on MP style clocks 2017-12-07 10:09:44 +01:00
ccu_mult.c clk: sunxi-ng: Wait for lock when using fractional mode 2017-08-01 10:18:23 +08:00
ccu_mult.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ccu_mux.c clk: sunxi-ng: Staticize ccu_mux_helper_unapply_prediv() 2017-06-16 14:51:36 -07:00
ccu_mux.h License cleanup: add SPDX GPL-2.0 license identifier to files with no license 2017-11-02 11:10:55 +01:00
ccu_nk.c clk: sunxi-ng: use 1 as fallback for minimum multiplier 2017-04-13 14:09:25 +02:00
ccu_nk.h clk: sunxi-ng: Rename the internal structures 2016-10-20 19:24:20 +02:00
ccu_nkm.c clk: sunxi-ng: nkm: add support for fixed post-divider 2017-08-14 22:45:06 +08:00
ccu_nkm.h clk: sunxi-ng: nkm: add support for fixed post-divider 2017-08-14 22:45:06 +08:00
ccu_nkmp.c clk: sunxi-ng: Support fixed post-dividers on NKMP style clocks 2018-03-18 21:16:54 +01:00
ccu_nkmp.h clk: sunxi-ng: Support fixed post-dividers on NKMP style clocks 2018-03-18 21:16:54 +01:00
ccu_nm.c clk: sunxi-ng: Add check for minimal rate to NM PLLs 2018-03-02 08:42:14 +01:00
ccu_nm.h clk: sunxi-ng: Add check for minimal rate to NM PLLs 2018-03-02 08:42:14 +01:00
ccu_phase.c clk: sunxi-ng: Add phase clock support 2016-07-08 18:04:45 -07:00
ccu_phase.h clk: sunxi-ng: Add phase clock support 2016-07-08 18:04:45 -07:00
ccu_reset.c clk: sunxi-ng: Implement reset control status readback 2017-09-26 11:13:03 +02:00
ccu_reset.h clk: sunxi-ng: explicitly include linux/spinlock.h 2017-06-07 15:32:12 +02:00
ccu_sdm.c clk: sunxi-ng: Add sigma-delta modulation support 2017-10-13 09:27:06 +02:00
ccu_sdm.h clk: sunxi-ng: Add sigma-delta modulation support 2017-10-13 09:27:06 +02:00