From mboxrd@z Thu Jan 1 00:00:00 1970 From: maxime.ripard@bootlin.com (Maxime Ripard) Date: Fri, 7 Sep 2018 10:21:03 +0200 Subject: [PATCH] clk: sunxi-ng: sun4i: Set VCO and PLL bias current to lowest setting In-Reply-To: <20180906132537.20772-1-wens@csie.org> References: <20180906132537.20772-1-wens@csie.org> Message-ID: <20180907082103.lyuubyqpojehtkz4@flea> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Thu, Sep 06, 2018 at 09:25:37PM +0800, Chen-Yu Tsai wrote: > 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: de3448519194 ("clk: sunxi-ng: sun4i: Use sigma-delta modulation > for audio PLL") > Cc: # 4.15.x > Signed-off-by: Chen-Yu Tsai Applied, thanks! Maxime -- Maxime Ripard, Bootlin Embedded Linux and Kernel engineering https://bootlin.com -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 833 bytes Desc: not available URL: