From mboxrd@z Thu Jan 1 00:00:00 1970 From: vladimir_zapolskiy@mentor.com (Vladimir Zapolskiy) Date: Mon, 28 Sep 2015 22:59:00 +0300 Subject: [PATCH v4] drm: bridge/dw_hdmi: add dw hdmi i2c bus adapter support In-Reply-To: References: <1442848061-4168-1-git-send-email-vladimir_zapolskiy@mentor.com> Message-ID: <56099C04.9050201@mentor.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi Doug, On 28.09.2015 19:29, Doug Anderson wrote: > Vladimir, > > On Mon, Sep 21, 2015 at 8:07 AM, Vladimir Zapolskiy > wrote: >> - do I2C bus controller reinitialization on every data transfer, >> this change hopefully solves some observed problems on RK3288 platform > > My apologies, but this appears to be a bad idea... > > We just discovered that this was the root cause of a bug. If an HDCP > transfer is happening then the soft reset messes things up. In our > tree we've moving things back to the way they were. :( therefore I do the same. Since unfortunately I'm limited in testing your tree and RK3288 platform, probably it might be more productive, if you send any updates on top of my changes -- I'll be capable to review/test them for regressions on iMX6 in vanilla. -- With best wishes, Vladimir From mboxrd@z Thu Jan 1 00:00:00 1970 From: Vladimir Zapolskiy Subject: Re: [PATCH v4] drm: bridge/dw_hdmi: add dw hdmi i2c bus adapter support Date: Mon, 28 Sep 2015 22:59:00 +0300 Message-ID: <56099C04.9050201@mentor.com> References: <1442848061-4168-1-git-send-email-vladimir_zapolskiy@mentor.com> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: Received: from relay1.mentorg.com (relay1.mentorg.com [192.94.38.131]) by gabe.freedesktop.org (Postfix) with ESMTPS id 127276E03E for ; Mon, 28 Sep 2015 12:59:13 -0700 (PDT) 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: Doug Anderson Cc: "dri-devel@lists.freedesktop.org" , Andy Yan , Russell King , "linux-arm-kernel@lists.infradead.org" List-Id: dri-devel@lists.freedesktop.org SGkgRG91ZywKCk9uIDI4LjA5LjIwMTUgMTk6MjksIERvdWcgQW5kZXJzb24gd3JvdGU6Cj4gVmxh ZGltaXIsCj4gCj4gT24gTW9uLCBTZXAgMjEsIDIwMTUgYXQgODowNyBBTSwgVmxhZGltaXIgWmFw b2xza2l5Cj4gPHZsYWRpbWlyX3phcG9sc2tpeUBtZW50b3IuY29tPiB3cm90ZToKPj4gLSBkbyBJ MkMgYnVzIGNvbnRyb2xsZXIgcmVpbml0aWFsaXphdGlvbiBvbiBldmVyeSBkYXRhIHRyYW5zZmVy LAo+PiAgIHRoaXMgY2hhbmdlIGhvcGVmdWxseSBzb2x2ZXMgc29tZSBvYnNlcnZlZCBwcm9ibGVt cyBvbiBSSzMyODggcGxhdGZvcm0KPiAKPiBNeSBhcG9sb2dpZXMsIGJ1dCB0aGlzIGFwcGVhcnMg dG8gYmUgYSBiYWQgaWRlYS4uLgo+IAo+IFdlIGp1c3QgZGlzY292ZXJlZCB0aGF0IHRoaXMgd2Fz IHRoZSByb290IGNhdXNlIG9mIGEgYnVnLiAgSWYgYW4gSERDUAo+IHRyYW5zZmVyIGlzIGhhcHBl bmluZyB0aGVuIHRoZSBzb2Z0IHJlc2V0IG1lc3NlcyB0aGluZ3MgdXAuICBJbiBvdXIKPiB0cmVl IHdlJ3ZlIG1vdmluZyB0aGluZ3MgYmFjayB0byB0aGUgd2F5IHRoZXkgd2VyZS4gIDooCgp0aGVy ZWZvcmUgSSBkbyB0aGUgc2FtZS4KClNpbmNlIHVuZm9ydHVuYXRlbHkgSSdtIGxpbWl0ZWQgaW4g dGVzdGluZyB5b3VyIHRyZWUgYW5kIFJLMzI4OApwbGF0Zm9ybSwgcHJvYmFibHkgaXQgbWlnaHQg YmUgbW9yZSBwcm9kdWN0aXZlLCBpZiB5b3Ugc2VuZCBhbnkgdXBkYXRlcwpvbiB0b3Agb2YgbXkg Y2hhbmdlcyAtLSBJJ2xsIGJlIGNhcGFibGUgdG8gcmV2aWV3L3Rlc3QgdGhlbSBmb3IKcmVncmVz c2lvbnMgb24gaU1YNiBpbiB2YW5pbGxhLgoKLS0KV2l0aCBiZXN0IHdpc2hlcywKVmxhZGltaXIK X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVs IG1haWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHA6Ly9saXN0 cy5mcmVlZGVza3RvcC5vcmcvbWFpbG1hbi9saXN0aW5mby9kcmktZGV2ZWwK