From mboxrd@z Thu Jan 1 00:00:00 1970 From: Mark Brown Date: Mon, 24 Mar 2014 11:06:16 +0000 Subject: Re: [RFC PATCH] ASoC: wm8904: add CCF support Message-Id: <20140324110616.GG2269@sirena.org.uk> MIME-Version: 1 Content-Type: multipart/mixed; boundary="YH9Qf6Fh2G5kB/85" List-Id: References: <1395370262-23305-1-git-send-email-voice.shen@atmel.com> <20140321103747.GK23372@e106331-lin.cambridge.arm.com> <20140321115511.GM11706@sirena.org.uk> <532F9557.2000402@atmel.com> In-Reply-To: <532F9557.2000402@atmel.com> To: Bo Shen Cc: Mark Rutland , "alsa-devel@alsa-project.org" , "b.brezillon.dev@gmail.com" , "nicolas.ferre@atmel.com" , "linux-sound@vger.kernel.org" , "linux-arm-kernel@lists.infradead.org" --YH9Qf6Fh2G5kB/85 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Mar 24, 2014 at 10:15:51AM +0800, Bo Shen wrote: > On 03/21/2014 07:55 PM, Mark Brown wrote: > >On Fri, Mar 21, 2014 at 10:37:47AM +0000, Mark Rutland wrote: > >>On Fri, Mar 21, 2014 at 02:51:02AM +0000, Bo Shen wrote: > >>>+ - wlf,sysclk-from-mclk: set the sys clock is driven from mclk, > >>Why can the kernel not decide this? > >It can. > I really don't know how it decided by kernel (hardcode in machine driver ?), > can you point me directly? Thanks. It can just look to see if there is a suitable system clock present, this shouldn't be hard. If there's a clock connected at a suitable rate it should use that, otherwise if there's a clock at an unsuitable rate it should either change the rate of the clock or use the FLL. --YH9Qf6Fh2G5kB/85 Content-Type: application/pgp-signature; name="signature.asc" Content-Description: Digital signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAEBAgAGBQJTMBGlAAoJELSic+t+oim9YxMP/iffUyCyXX72fYi/Hvd0WMWU GUCdAaQZIDjjlFEZvD8cy2LpkudLQaKQkxcdtgmcnvXzKa0Cofdf5LKgreOgWaAB r2lKzm+2Otr/cFsxK8UW53uku2LWjLbv4WpzApuJzwSw19MGm7vFFZpqi+6O2M/f mps7gmercWZ1M/j3AaNSOYp1uUx343P+ZMjbdWRfDrIrLQqrIZT996x0nmJzv04G p/q+ajyboQvImSwLr0c92eC3sG8w1Jbl6CM2lak7CoGF/iFCeL9lrV7mGgOpozx7 wZF3no4oIi+Y4iJUvoPTR/qNv2kaYESL85f6kzVBlUG3YLUFgyWZhEG4MKed6TkC 2o7OlPHNAR2NxT4zuHbD3WVzh1jAsv2evgUBbFVNDAu09lUbKV99oSJRG+eVaYNS qkfWwHCvr9SNtgHHyxKE47/MPT6u1Uz3Z+/PGQjDMboeZf8pTPWGxheD1XBiWPVa ldKBdvNQVv8WWfjGErCwJGK3tYmZKOesfwH1JlrgoqzxHQypyDYwrhhxbUDCx3iv NsJJEtcV5TR+ByELrruFNcyJZz/lHLv3+I2SQxmloUD3hTuyvg/7VuBEzZz1hssk oczT52BT160fUFYKasFZ/KNR4pZ/Ga80G3G1kP+cMfXLzmMxGswSsoNYW8VtDWaW OIiw7Vt6gih7AnBEhckh =KYND -----END PGP SIGNATURE----- --YH9Qf6Fh2G5kB/85--