From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from perceval.ideasonboard.com ([213.167.242.64]:52250 "EHLO perceval.ideasonboard.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726315AbeHUL1y (ORCPT ); Tue, 21 Aug 2018 07:27:54 -0400 From: Laurent Pinchart To: Ulrich Hecht Cc: Ulrich Hecht , linux-renesas-soc@vger.kernel.org, dri-devel@lists.freedesktop.org, jacopo+renesas@jmondi.org, kieran.bingham+renesas@ideasonboard.com, Koji Matsuoka Subject: Re: [PROTO][PATCH 05/10] drm/bridge: adv7511: Add max-clock, min-vrefresh options Date: Tue, 21 Aug 2018 11:09:43 +0300 Message-ID: <4491168.zjQBQaeJMW@avalon> In-Reply-To: <163044965.365968.1534838625060@webmail.strato.com> References: <1534254604-24204-1-git-send-email-uli+renesas@fpond.eu> <2454542.vJvYSti9iT@avalon> <163044965.365968.1534838625060@webmail.strato.com> MIME-Version: 1.0 Content-Transfer-Encoding: 7Bit Content-Type: text/plain; charset="us-ascii" Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: Hi Ulrich, On Tuesday, 21 August 2018 11:03:45 EEST Ulrich Hecht wrote: > On August 20, 2018 at 11:28 AM Laurent Pinchart wrote: > > On Tuesday, 14 August 2018 16:49:59 EEST Ulrich Hecht wrote: > >> From: Koji Matsuoka > >> > >> This patch adds the option to specify a maximal clock and a minimal > >> vertical refresh rate. > > > > What is this needed for ? > > Somewhere in the chain there is a component that will not tolerate clocks in > excess of 135 MHz; if you don't limit it, the default for a 1920x1200 > display is somewhere along 148 MHz, and the HDMI signal output is invalid. Do you know which component that is ? -- Regards, Laurent Pinchart From mboxrd@z Thu Jan 1 00:00:00 1970 From: Laurent Pinchart Subject: Re: [PROTO][PATCH 05/10] drm/bridge: adv7511: Add max-clock, min-vrefresh options Date: Tue, 21 Aug 2018 11:09:43 +0300 Message-ID: <4491168.zjQBQaeJMW@avalon> References: <1534254604-24204-1-git-send-email-uli+renesas@fpond.eu> <2454542.vJvYSti9iT@avalon> <163044965.365968.1534838625060@webmail.strato.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from perceval.ideasonboard.com (perceval.ideasonboard.com [213.167.242.64]) by gabe.freedesktop.org (Postfix) with ESMTPS id 89ED16E16C for ; Tue, 21 Aug 2018 08:08:47 +0000 (UTC) In-Reply-To: <163044965.365968.1534838625060@webmail.strato.com> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Ulrich Hecht Cc: Koji Matsuoka , dri-devel@lists.freedesktop.org, linux-renesas-soc@vger.kernel.org, kieran.bingham+renesas@ideasonboard.com, jacopo+renesas@jmondi.org, Ulrich Hecht List-Id: dri-devel@lists.freedesktop.org SGkgVWxyaWNoLAoKT24gVHVlc2RheSwgMjEgQXVndXN0IDIwMTggMTE6MDM6NDUgRUVTVCBVbHJp Y2ggSGVjaHQgd3JvdGU6Cj4gT24gQXVndXN0IDIwLCAyMDE4IGF0IDExOjI4IEFNIExhdXJlbnQg UGluY2hhcnQgd3JvdGU6Cj4gPiBPbiBUdWVzZGF5LCAxNCBBdWd1c3QgMjAxOCAxNjo0OTo1OSBF RVNUIFVscmljaCBIZWNodCB3cm90ZToKPiA+PiBGcm9tOiBLb2ppIE1hdHN1b2thIDxrb2ppLm1h dHN1b2thLnhtQHJlbmVzYXMuY29tPgo+ID4+IAo+ID4+IFRoaXMgcGF0Y2ggYWRkcyB0aGUgb3B0 aW9uIHRvIHNwZWNpZnkgYSBtYXhpbWFsIGNsb2NrIGFuZCBhIG1pbmltYWwKPiA+PiB2ZXJ0aWNh bCByZWZyZXNoIHJhdGUuCj4gPiAKPiA+IFdoYXQgaXMgdGhpcyBuZWVkZWQgZm9yID8KPiAKPiBT b21ld2hlcmUgaW4gdGhlIGNoYWluIHRoZXJlIGlzIGEgY29tcG9uZW50IHRoYXQgd2lsbCBub3Qg dG9sZXJhdGUgY2xvY2tzIGluCj4gZXhjZXNzIG9mIDEzNSBNSHo7IGlmIHlvdSBkb24ndCBsaW1p dCBpdCwgdGhlIGRlZmF1bHQgZm9yIGEgMTkyMHgxMjAwCj4gZGlzcGxheSBpcyBzb21ld2hlcmUg YWxvbmcgMTQ4IE1IeiwgYW5kIHRoZSBIRE1JIHNpZ25hbCBvdXRwdXQgaXMgaW52YWxpZC4KCkRv IHlvdSBrbm93IHdoaWNoIGNvbXBvbmVudCB0aGF0IGlzID8KCi0tIApSZWdhcmRzLAoKTGF1cmVu dCBQaW5jaGFydAoKCgpfX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fXwpkcmktZGV2ZWwgbWFpbGluZyBsaXN0CmRyaS1kZXZlbEBsaXN0cy5mcmVlZGVza3RvcC5v cmcKaHR0cHM6Ly9saXN0cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2 ZWwK