From mboxrd@z Thu Jan 1 00:00:00 1970 From: Russell King - ARM Linux admin Subject: Re: [PATCH 04/13] drm/i2c: tda998x: derive CTS_N value from aclk sample rate ratio Date: Wed, 12 Jun 2019 17:28:13 +0100 Message-ID: <20190612162812.ovy6wu3fmck5mmp4@shell.armlinux.org.uk> References: <20190611110052.iw6qbw2yvypxus6t@shell.armlinux.org.uk> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from pandora.armlinux.org.uk (pandora.armlinux.org.uk [IPv6:2001:4d48:ad52:3201:214:fdff:fe10:1be6]) by gabe.freedesktop.org (Postfix) with ESMTPS id 3BA178975F for ; Wed, 12 Jun 2019 16:28:21 +0000 (UTC) Content-Disposition: inline In-Reply-To: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Sven Van Asbroeck Cc: David Airlie , dri-devel@lists.freedesktop.org, Peter Ujfalusi , Mark Brown , Jyri Sarha List-Id: dri-devel@lists.freedesktop.org T24gV2VkLCBKdW4gMTIsIDIwMTkgYXQgMTE6Mjc6MTZBTSAtMDQwMCwgU3ZlbiBWYW4gQXNicm9l Y2sgd3JvdGU6Cj4gT24gVHVlLCBKdW4gMTEsIDIwMTkgYXQgNzowMiBBTSBSdXNzZWxsIEtpbmcg PHJtaytrZXJuZWxAYXJtbGludXgub3JnLnVrPiB3cm90ZToKPiA+Cj4gPiBUaGUgVERBOTk4eCBk ZXJpdmVzIHRoZSBDVFMgdmFsdWUgdXNpbmcgdGhlIHN1cHBsaWVkIEkyUyBiaXQgY2xvY2sKPiA+ IChBQ0xLLCBpbiBUREE5OTh4IHBhcmxlbmNlKSByYXRoZXIgdGhhbiAxMjjCt2ZzLiAgVERBOTk4 eCB1c2VzIHR3bwo+ID4gY29uc3RhbnRzIG5hbWVkIG0gYW5kIGsgaW4gdGhlIENUUyBnZW5lcmF0 b3Igc3VjaCB0aGF0IHdlIGhhdmUgdGhpcwo+ID4gcmVsYXRpb25zaGlwIGJldHdlZW4gdGhlIEky UyBzb3VyY2UgQUNMSyBhbmQgdGhlIHNpbmsgZnM6Cj4gPgo+ID4gICAgICAgICAxMjjCt2ZzX3Np bmsgPSBBQ0xLwrdtIC8gawo+ID4KPiA+IFdoZXJlIEFDTEsgPSBhY2xrX3JhdGlvwrdmc19zb3Vy Y2UuCj4gPgo+ID4gV2hlbiBhdWRpbyBzdXBwb3J0IHdhcyBvcmlnaW5hbGx5IGFkZGVkLCB3ZSBz dXBwb3J0ZWQgYSBmaXhlZCByYXRpbwo+ID4gb2YgNjTCt2ZzLCBpbnRlbmRpbmcgdG8gc3VwcG9y dCB0aGUgS2lya3dvb2QgSTJTIG9uIERvdmUuICBIb3dldmVyLAo+ID4gd2hlbiBoZG1pLWNvZGVj IHN1cHBvcnQgd2FzIGFkZGVkLCB0aGlzIHdhcyBjaGFuZ2VkIHRvIHNjYWxlIHRoZQo+ID4gcmF0 aW8gd2l0aCB0aGUgc2FtcGxlIHdpZHRoLCB3aGljaCB3b3VsZCd2ZSBicm9rZW4gaXRzIHVzZSB3 aXRoCj4gPiBLaXJrd29vZCBJMlMuCj4gPgo+ID4gV2UgYXJlIG5vdyBzdGFydGluZyB0byBzZWUg b3RoZXIgdXNlcnMgd2hvc2UgSTJTIGJsb2NrcyBzZW5kIGF0IDY0wrdmcwo+ID4gZm9yIDE2LWJp dCBzYW1wbGVzLCBzbyB3ZSBuZWVkIHRvIHJlaW5zdGF0ZSB0aGUgc3VwcG9ydCBmb3IgdGhlIGZp eGVkCj4gPiByYXRpbyBJMlMgYml0IGNsb2NrLgo+ID4KPiA+IFRoaXMgY29tbWl0IHRha2VzIGEg c3RlcCB0b3dhcmRzIHN1cHBvcnRpbmcgdGhlc2UgY29uZmlndXJhdGlvbnMgYnkKPiA+IHNlbGVj dGluZyB0aGUgQ1RTX04gcmVnaXN0ZXIgbSBhbmQgayB2YWx1ZXMgYmFzZWQgb24gdGhlIGJpdCBj bG9jawo+ID4gcmF0aW8uICBIb3dldmVyLCBhcyB0aGUgZHJpdmVyIGlzIG5vdCBnaXZlbiB0aGUg Yml0IGNsb2NrIHJhdGlvIGZyb20KPiA+IEFMU0EsIGNvbnRpbnVlIGRlcml2aW5nIHRoaXMgZnJv bSB0aGUgc2FtcGxlIHdpZHRoLiAgVGhpcyB3aWxsIGJlCj4gPiBhZGRyZXNzZWQgaW4gYSBsYXRl ciBjb21taXQuCj4gPgo+ID4gU2lnbmVkLW9mZi1ieTogUnVzc2VsbCBLaW5nIDxybWsra2VybmVs QGFybWxpbnV4Lm9yZy51az4KPiA+IC0tLQo+IAo+IEBAIC0xNjU3LDkgKzE3MDEsMTcgQEAgc3Rh dGljIHZvaWQgdGRhOTk4eF9zZXRfY29uZmlnKHN0cnVjdCB0ZGE5OTh4X3ByaXYgKnByaXYsCj4g ICAgICAgICAgICAgICAgICAgICAgICAgICAgIChwLT5taXJyX2YgPyBWSVBfQ05UUkxfMl9NSVJS X0YgOiAwKTsKPiAKPiAgICAgICAgIGlmIChwLT5hdWRpb19wYXJhbXMuZm9ybWF0ICE9IEFGTVRf VU5VU0VEKSB7Cj4gKyAgICAgICAgICAgICAgIHVuc2lnbmVkIGludCByYXRpbzsKPiArICAgICAg ICAgICAgICAgYm9vbCBzcGRpZiA9IHAtPmF1ZGlvX3BhcmFtcy5mb3JtYXQgPT0gQUZNVF9TUERJ RjsKPiArCj4gICAgICAgICAgICAgICAgIHByaXYtPmF1ZGlvLnBhcmFtcyA9IHAtPmF1ZGlvX3Bh cmFtczsKPiAgICAgICAgICAgICAgICAgcHJpdi0+YXVkaW8uaTJzX2Zvcm1hdCA9IEkyU19GT1JN QVRfUEhJTElQUzsKPiArCj4gKyAgICAgICAgICAgICAgIHJhdGlvID0gc3BkaWYgPyA2NCA6IHAt PmF1ZGlvX3BhcmFtcy5zYW1wbGVfd2lkdGggKiAyOwo+ICsgICAgICAgICAgICAgICByZXR1cm4g dGRhOTk4eF9kZXJpdmVfY3RzX24ocHJpdiwgJnByaXYtPmF1ZGlvLCByYXRpbyk7Cj4gCj4gV29u J3QgdGhpcyBtYWtlIHRoZSBwbGF0Zm9ybV9kYXRhIHBhdGggZmFpbCBhbGwgdGhlIHRpbWU/Cj4g QWxzbywgdGhlIHBsYXRmb3JtX2RhdGEgcGF0aCBkb2Vzbid0IGFwcGVhciB0byBpbnN0YW50aWF0 ZSB0aGUgSERNSV9DT0RFQywKPiBzbyB0ZGEgYXVkaW8gc3VwcG9ydCB3b3VsZCBiZSBjb21wbGV0 ZWx5IG1pc3NpbmcgaW4gdGhpcyBjYXNlPwoKVGhlIHBsYXRmb3JtIGRhdGEgcGF0aCBoYXMgbmV2 ZXIgc3VwcG9ydGVkIHRoZSBIRE1JIGNvZGVjIHdheSBvZiBkb2luZwp0aGluZ3MsIHNvIHRoYXQg cmVhbGx5IGlzbid0IGEgY29uY2VybiBoZXJlLiAgVGhlIHBsYXRmb3JtIGRhdGEgd2F5CndhcyBz dWZmaWNpZW50IHRvIGFsbG93IFNQRElGIHN0cmVhbXMgdG8gd29yayB3aXRoIGEgc3RhdGljIHNl dHVwIG9mCnRoZSBUREE5OTh4LCBhbmQgaGFzIG5ldmVyIGJlZW4gaW50ZW5kZWQgdG8gc3VwcG9y dCBhbnl0aGluZyBiZXlvbmQKdGhhdC4KCi0tIApSTUsncyBQYXRjaCBzeXN0ZW06IGh0dHBzOi8v d3d3LmFybWxpbnV4Lm9yZy51ay9kZXZlbG9wZXIvcGF0Y2hlcy8KRlRUQyBicm9hZGJhbmQgZm9y IDAuOG1pbGUgbGluZSBpbiBzdWJ1cmJpYTogc3luYyBhdCAxMi4xTWJwcyBkb3duIDYyMmticHMg dXAKQWNjb3JkaW5nIHRvIHNwZWVkdGVzdC5uZXQ6IDExLjlNYnBzIGRvd24gNTAwa2JwcyB1cApf X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fXwpkcmktZGV2ZWwg bWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5vcmcKaHR0cHM6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWw=