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charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [PATCH] clk: sunxi-ng: v3s: add support for variable rate audio pll output To: Tobias Schramm , Maxime Ripard CC: Michael Turquette , Stephen Boyd , Chen-Yu Tsai , Jernej Skrabec , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org From: Icenowy Zheng Message-ID: <2BA0A0C7-DA37-486B-B12F-C485F1000F8E@aosc.io> X-Spamd-Result: default: False [2.90 / 10.00]; RCVD_VIA_SMTP_AUTH(0.00)[]; RECEIVED_SPAMHAUS_XBL(3.00)[117.136.12.200:received]; R_DKIM_ALLOW(0.00)[aosc.io:s=default]; RECEIVED_SPAMHAUS_PBL(0.00)[117.136.12.200:received]; FROM_HAS_DN(0.00)[]; TO_DN_SOME(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MIME_GOOD(-0.10)[text/plain]; DMARC_NA(0.00)[aosc.io]; ARC_NA(0.00)[]; R_SPF_SOFTFAIL(0.00)[~all]; ML_SERVERS(-3.10)[148.251.23.173]; DKIM_TRACE(0.00)[aosc.io:+]; RCPT_COUNT_SEVEN(0.00)[9]; RCVD_NO_TLS_LAST(0.10)[]; FROM_EQ_ENVFROM(0.00)[]; MIME_TRACE(0.00)[0:+]; ASN(0.00)[asn:24940, ipnet:148.251.0.0/16, country:DE]; RCVD_COUNT_TWO(0.00)[2]; MID_RHS_MATCH_FROM(0.00)[]; HFILTER_HELO_BAREIP(3.00)[148.251.23.173,1] X-Rspamd-Queue-Id: 84CE840C0B X-Rspamd-Server: mail20.mymailcheap.com Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org =E4=BA=8E 2021=E5=B9=B42=E6=9C=8818=E6=97=A5 GMT+08:00 =E4=B8=8B=E5=8D=885= :18:39, Tobias Schramm =E5=86=99=E5=88=B0: >Hi Icenowy, > > > We have introducee SDM-based accurate audio PLL on several >> other SoCs=2E Some people is quite sensitive about audio-related >things=2E > > >While it is possible to support 24MHz * 128 / 25 / 5 =3D 24=2E576MHz >without=20 >delta sigma modulation, matching 22=2E5792MHz is indeed not possible=2E I= =20 >read you'd prefer me to use SDM like the other SoCs though? Shall I >send=20 >a v2 utilizing SDM? Yes, I think so=2E > >Cheers, >Tobias