From mboxrd@z Thu Jan 1 00:00:00 1970 From: Fabrizio Castro Subject: RE: [RFC] drm/bridge/sii902x: Fix EDID readback Date: Thu, 1 Nov 2018 17:32:42 +0000 Message-ID: References: <1540990667-14109-1-git-send-email-fabrizio.castro@bp.renesas.com> <755e644c-d734-0bde-6908-36dd681de50e@axentia.se> <7d0df588-8051-b426-aed7-635e013bd2a3@axentia.se> <424d4f17-bf2e-6c9e-2605-36ab20fd412b@axentia.se> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: In-Reply-To: <424d4f17-bf2e-6c9e-2605-36ab20fd412b@axentia.se> Content-Language: en-US List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" To: Peter Rosin , Linus Walleij , Mark Brown Cc: Geert Uytterhoeven , Wolfram Sang , Dave Airlie , Boris BREZILLON , Chris Paterson , "open list:DRM PANEL DRIVERS" , Biju Das , Linux-Renesas , Simon Horman , Laurent Pinchart , "linux-i2c@vger.kernel.org" List-Id: linux-i2c@vger.kernel.org SGVsbG8gUGV0ZXIsDQoNClRoYW5rIHlvdSBmb3IgeW91ciBmZWVkYmFjayENCg0KPiBTdWJqZWN0 OiBSZTogW1JGQ10gZHJtL2JyaWRnZS9zaWk5MDJ4OiBGaXggRURJRCByZWFkYmFjaw0KDQpzbmlw DQoNCj4gPg0KPiA+IFRvIGZ1cnRoZXIgZGV0YWlsIHRoZSBwcm9ibGVtLCB0aGUgc3lzdGVtIGlz IHZ1bG5lcmFibGUgZnJvbSBiZWZvcmUgdGhlIGxhc3Qgd3JpdGUNCj4gPiBwZXJmb3JtZWQgYnkg c2lpOTAyeF9pMmNfYnlwYXNzX3NlbGVjdCB0byBhZnRlciB3ZSBjb25maXJtIHdlIG5lZWQgdGhl IHN3aXRjaA0KPiA+IHRvIGJlIGNsb3NlZCB3aXRoaW4gc2lpOTAyeF9pMmNfYnlwYXNzX2Rlc2Vs ZWN0LCB0aGF0J3MgdGhlIG1pbmltdW0gYW1vdW50IG9mIHRpbWUNCj4gPiB3ZSBjb3VsZCBrZWVw IHRoZSBwYXJlbnQgYWRhcHRlciBsb2NrZWQgZm9yLCBJIGd1ZXNzIEkgYW0gc3R1Y2sgd2l0aCBh IHBhcmVudC1sb2NraW5nDQo+ID4gYXJjaGl0ZWN0dXJlLCBhcmVuJ3QgST8NCj4NCj4gSWYgdGhh dCBwcm9ibGVtIGRlc2NyaXB0aW9uIGlzIGNvcnJlY3QsIHRoZW4geWVzLCBJIHRoaW5rIHRoZSAq b25seSogc29sdXRpb24NCj4gaXMgdG8gY29tYmluZSB0aGUgdGhyZWUgcGFydHMgIm9wZW4gYnlw YXNzIG1vZGUiLCAiZWRpZCB4ZmVyIiBhbmQgImNsb3NlIGJ5cGFzcw0KPiBtb2RlIiwgYW5kIHRv IGtlZXAgdGhlIGkyYyBhZGFwdGVyIGxvY2tlZCBkdXJpbmcgdGhlIHByb2NlZHVyZSBzbyB0aGF0 IG90aGVyDQo+IHhmZXJzIGRvIG5vdCBjcmVlcCBpbiBhbmQgY3JhcCB0aGluZyB1cCBmcm9tIHRo ZSBzaWRlLiBBbmQgb25lIHdheSB0byBjb21iaW5lDQo+IHRoZSB0aHJlZSBwYXJ0cyBpcyB0byB1 c2UgYSBwYXJlbnQtbG9ja2VkIGkyYyBnYXRlLiBBbmQgc2luY2UgeW91IG5lZWQgdG8ga2VlcA0K PiB0aGUgaTJjIGFkYXB0ZXIgbG9ja2VkIG92ZXIgdGhlIHdob2xlIHByb2NlZHVyZSwgeW91IG5l ZWQgdG8gdXNlIHVubG9ja2VkIHhmZXJzDQo+IChhcyB5b3UgaGF2ZSBhbHJlYWR5IGRpc2NvdmVy ZWQpLiBCdXQgaG93IGRvIHlvdSBrbm93IHRoYXQgdGhpcyBwcm9ibGVtDQo+IGRlc2NyaXB0aW9u IGlzIGFjY3VyYXRlPw0KDQpJIGJhc2ljYWxseSBvYnNlcnZlZCB3aGF0IHdhcyBnb2luZyBvbiBv biB0aGUgYnVzICh3aXRoIGEgbG9naWMgYW5hbHlzZXIpIHdoaWxlIGdlbmVyYXRpbmcNCnRyYWZm aWMgb24gdGhlIHBhcmVudCBhZGFwdGVyDQoNCj4gV2h5IGlzIGl0IG5vdCBvayBmb3IgdW5yZWxh dGVkIHhmZXJzIHRvIGNyZWVwIGluDQo+IGJldHdlZW4gb3BlbmluZyB0aGUgYnlwYXNzIG1vZGUg YW5kIHRoZSBlZGlkIHhmZXIsIGFuZCBob3cgZG8geW91IGtub3cgdGhhdA0KPiB0aGlzIGlzIG5v dCBvaz8NCg0KQmVjYXVzZSB0aG9zZSB0cmFuc2ZlcnMgd291bGQgY29tZSB3aXRoIG5vIGV4dHJh IGRlbGF5IGJldHdlZW4gU1RPUCBhbmQgU1RBUlQNCmNvbmRpdGlvbnMgd2hpbGUgdGhlIEhETUkg dHJhbnNtaXR0ZXIgaXMgaW4gcGFzc3Rocm91Z2ggbW9kZQ0KDQo+DQo+ID4gQnV0IEkgZ3Vlc3Mg SSBjb3VsZCByZWxlYXNlIGl0IHdoZW4gaXQncyBub3QgYWN0dWFsbHkgbmVlZGVkLA0KPg0KPiBI b3cgd291bGQgeW91IGZpZ3VyZSBvdXQgd2hlbiBpdCdzIG5vdCBuZWVkZWQ/DQoNClRoZSBtb21l bnQgeW91IHRlbGwgdGhlIEhETUkgdHJhbnNtaXR0ZXIgeW91IGFyZSBnb2luZyB0byB0YWxrIHRv IHRoZSBtb25pdG9yIG5vdGhpbmcgZWxzZSBjYW4NCmZsb3cgb24gdGhlIGJ1cywgdXAgdW50aWwg eW91IGdyYWNlZnVsbHkgY2xvc2UgdGhlIHBhc3MgdGhyb3VnaCBzZXNzaW9uLCB3aGljaCBtZWFu cyBJIHdvdWxkbid0DQpyZWFsbHkgbmVlZCB0byBob2xkIHRoZSBwYXJlbnQgbG9jayBkdXJpbmcg dGhlIGVudGlyZSBkdXJhdGlvbiBvZiB0aGUgc2VsZWN0IGNhbGxiYWNrLCBJIHdvdWxkIG5lZWQN CnRvIGhvbGQgdGhlIHBhcmVudCBsb2NrIG9ubHkgZnJvbSBiZWZvcmUgdGhlIGxhc3Qgd3JpdGUg YXMgdGhhdCdzIHdoZW4gd2UgdGVsbCB0aGUgSERNSSB0cmFuc21pdHRlcg0KdG8gYWN0aXZhdGUg dGhlIHBhc3N0aHJvdWdoIG1vZGUsIGJ1dCBJIGd1ZXNzIGl0IHdvdWxkIG1ha2UgdGhlIGRyaXZl ciBoYXJkIHRvIG1haW50YWluIChhcyBpbg0Kb3RoZXJzIHdvdWxkIG5lZWQgdG8gdW5kZXJzdGFu ZCB0aGlzIHByb3Blcmx5IGJlZm9yZSBtYWtpbmcgYW55IGNoYW5nZXMpLCB3b3VsZG4ndCBpdD8N Cg0KPg0KPiA+IG9yIGlzIHRoaXMgZ29pbmcgdG8gYmUgYSBwYWluIHRvIG1haW50YWluPyBTaGFs bCBJIGp1c3Qga2VlcCBnb2luZyB3aXRoIHRoZSBwYXJlbnQtbG9ja2luZw0KPiA+IGJ1dCB1c2lu ZyBiYXJlIGkyYyB0cmFuc2FjdGlvbnMgb25seSB3aXRoaW4gc2VsZWN0IGFuZCBkZXNlbGVjdCBh bmQgbGVhdmUgcmVnbWFwDQo+ID4gdG8gZGVhbCB3aXRoIGV2ZXJ5dGhpbmcgZWxzZT8NCj4NCj4g VGhhdCdzIGEgcG9zc2liaWxpdHkuIFRha2UgY2FyZSB0byBub3QgbWVzcyB1cCBhbnkgY2FjaGVk IHN0YXRlIGluIHJlZ21hcCB0aG91Z2guDQoNClRoZSBvcmlnaW5hbCB2ZXJzaW9uIG9mIHRoZSBk cml2ZXIgd2Fzbid0IHVzaW5nIGFueSBjYWNoaW5nLCBzbyBJIGd1ZXNzIEkgd291bGQgbmVlZCB0 byBmYWxsYmFjaw0KZXhhY3RseSB0byB0aGUgc2FtZSBpbXBsZW1lbnRhdGlvbi4NCg0KU28sIHdo YXQgc2hvdWxkIEkgZG8/IFNob3VsZCBJIGtlZXAgdGhlIHBhcmVudC1sb2NraW5nLCB0aGUgdW5s b2NrZWQgZmxhdm91cnMgb2YgcmQvd3Ivcm13IGZyb20NCndpdGhpbiBzZWxlY3QvZGVzZWxlY3Qs IGFuZCBwdXQgYmFjayByZWdtYXAgYmFzZWQgcmQvd3Ivcm13IHdpdGggbm8gY2FjaGluZyBmb3Ig ZXZlcnl0aGluZyBlbHNlPw0KDQpUaGFuayB5b3UhDQoNCkZhYg0KDQo+IFRoZSByZWdpc3RlcnMg eW91IHRvdWNoIGZyb20gc2VsZWN0L2Rlc2VsZWN0IHNob3VsZCBwcm9iYWJseSBiZSB2b2xhdGls ZSBvcg0KPiBzb21ldGhpbmcgbGlrZSB0aGF0Pw0KPg0KPiBDaGVlcnMsDQo+IFBldGVyDQoNCg0K DQpSZW5lc2FzIEVsZWN0cm9uaWNzIEV1cm9wZSBMdGQsIER1a2VzIE1lYWRvdywgTWlsbGJvYXJk IFJvYWQsIEJvdXJuZSBFbmQsIEJ1Y2tpbmdoYW1zaGlyZSwgU0w4IDVGSCwgVUsuIFJlZ2lzdGVy ZWQgaW4gRW5nbGFuZCAmIFdhbGVzIHVuZGVyIFJlZ2lzdGVyZWQgTm8uIDA0NTg2NzA5Lg0KX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX18KZHJpLWRldmVsIG1h aWxpbmcgbGlzdApkcmktZGV2ZWxAbGlzdHMuZnJlZWRlc2t0b3Aub3JnCmh0dHBzOi8vbGlzdHMu ZnJlZWRlc2t0b3Aub3JnL21haWxtYW4vbGlzdGluZm8vZHJpLWRldmVsCg== From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ty1jpn01on0115.outbound.protection.outlook.com ([104.47.93.115]:12019 "EHLO JPN01-TY1-obe.outbound.protection.outlook.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727564AbeKBCgo (ORCPT ); Thu, 1 Nov 2018 22:36:44 -0400 From: Fabrizio Castro To: Peter Rosin , Linus Walleij , Mark Brown CC: Archit Taneja , Andrzej Hajda , Dave Airlie , Wolfram Sang , Laurent Pinchart , "open list:DRM PANEL DRIVERS" , Simon Horman , Geert Uytterhoeven , Chris Paterson , Biju Das , Linux-Renesas , "linux-i2c@vger.kernel.org" , Inki Dae , Boris BREZILLON Subject: RE: [RFC] drm/bridge/sii902x: Fix EDID readback Date: Thu, 1 Nov 2018 17:32:42 +0000 Message-ID: References: <1540990667-14109-1-git-send-email-fabrizio.castro@bp.renesas.com> <755e644c-d734-0bde-6908-36dd681de50e@axentia.se> <7d0df588-8051-b426-aed7-635e013bd2a3@axentia.se> <424d4f17-bf2e-6c9e-2605-36ab20fd412b@axentia.se> In-Reply-To: <424d4f17-bf2e-6c9e-2605-36ab20fd412b@axentia.se> Content-Language: en-US Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 MIME-Version: 1.0 Sender: linux-renesas-soc-owner@vger.kernel.org List-ID: SGVsbG8gUGV0ZXIsDQoNClRoYW5rIHlvdSBmb3IgeW91ciBmZWVkYmFjayENCg0KPiBTdWJqZWN0 OiBSZTogW1JGQ10gZHJtL2JyaWRnZS9zaWk5MDJ4OiBGaXggRURJRCByZWFkYmFjaw0KDQpzbmlw DQoNCj4gPg0KPiA+IFRvIGZ1cnRoZXIgZGV0YWlsIHRoZSBwcm9ibGVtLCB0aGUgc3lzdGVtIGlz IHZ1bG5lcmFibGUgZnJvbSBiZWZvcmUgdGhlIGxhc3Qgd3JpdGUNCj4gPiBwZXJmb3JtZWQgYnkg c2lpOTAyeF9pMmNfYnlwYXNzX3NlbGVjdCB0byBhZnRlciB3ZSBjb25maXJtIHdlIG5lZWQgdGhl IHN3aXRjaA0KPiA+IHRvIGJlIGNsb3NlZCB3aXRoaW4gc2lpOTAyeF9pMmNfYnlwYXNzX2Rlc2Vs ZWN0LCB0aGF0J3MgdGhlIG1pbmltdW0gYW1vdW50IG9mIHRpbWUNCj4gPiB3ZSBjb3VsZCBrZWVw IHRoZSBwYXJlbnQgYWRhcHRlciBsb2NrZWQgZm9yLCBJIGd1ZXNzIEkgYW0gc3R1Y2sgd2l0aCBh IHBhcmVudC1sb2NraW5nDQo+ID4gYXJjaGl0ZWN0dXJlLCBhcmVuJ3QgST8NCj4NCj4gSWYgdGhh dCBwcm9ibGVtIGRlc2NyaXB0aW9uIGlzIGNvcnJlY3QsIHRoZW4geWVzLCBJIHRoaW5rIHRoZSAq b25seSogc29sdXRpb24NCj4gaXMgdG8gY29tYmluZSB0aGUgdGhyZWUgcGFydHMgIm9wZW4gYnlw YXNzIG1vZGUiLCAiZWRpZCB4ZmVyIiBhbmQgImNsb3NlIGJ5cGFzcw0KPiBtb2RlIiwgYW5kIHRv IGtlZXAgdGhlIGkyYyBhZGFwdGVyIGxvY2tlZCBkdXJpbmcgdGhlIHByb2NlZHVyZSBzbyB0aGF0 IG90aGVyDQo+IHhmZXJzIGRvIG5vdCBjcmVlcCBpbiBhbmQgY3JhcCB0aGluZyB1cCBmcm9tIHRo ZSBzaWRlLiBBbmQgb25lIHdheSB0byBjb21iaW5lDQo+IHRoZSB0aHJlZSBwYXJ0cyBpcyB0byB1 c2UgYSBwYXJlbnQtbG9ja2VkIGkyYyBnYXRlLiBBbmQgc2luY2UgeW91IG5lZWQgdG8ga2VlcA0K PiB0aGUgaTJjIGFkYXB0ZXIgbG9ja2VkIG92ZXIgdGhlIHdob2xlIHByb2NlZHVyZSwgeW91IG5l ZWQgdG8gdXNlIHVubG9ja2VkIHhmZXJzDQo+IChhcyB5b3UgaGF2ZSBhbHJlYWR5IGRpc2NvdmVy ZWQpLiBCdXQgaG93IGRvIHlvdSBrbm93IHRoYXQgdGhpcyBwcm9ibGVtDQo+IGRlc2NyaXB0aW9u IGlzIGFjY3VyYXRlPw0KDQpJIGJhc2ljYWxseSBvYnNlcnZlZCB3aGF0IHdhcyBnb2luZyBvbiBv biB0aGUgYnVzICh3aXRoIGEgbG9naWMgYW5hbHlzZXIpIHdoaWxlIGdlbmVyYXRpbmcNCnRyYWZm aWMgb24gdGhlIHBhcmVudCBhZGFwdGVyDQoNCj4gV2h5IGlzIGl0IG5vdCBvayBmb3IgdW5yZWxh dGVkIHhmZXJzIHRvIGNyZWVwIGluDQo+IGJldHdlZW4gb3BlbmluZyB0aGUgYnlwYXNzIG1vZGUg YW5kIHRoZSBlZGlkIHhmZXIsIGFuZCBob3cgZG8geW91IGtub3cgdGhhdA0KPiB0aGlzIGlzIG5v dCBvaz8NCg0KQmVjYXVzZSB0aG9zZSB0cmFuc2ZlcnMgd291bGQgY29tZSB3aXRoIG5vIGV4dHJh IGRlbGF5IGJldHdlZW4gU1RPUCBhbmQgU1RBUlQNCmNvbmRpdGlvbnMgd2hpbGUgdGhlIEhETUkg dHJhbnNtaXR0ZXIgaXMgaW4gcGFzc3Rocm91Z2ggbW9kZQ0KDQo+DQo+ID4gQnV0IEkgZ3Vlc3Mg SSBjb3VsZCByZWxlYXNlIGl0IHdoZW4gaXQncyBub3QgYWN0dWFsbHkgbmVlZGVkLA0KPg0KPiBI b3cgd291bGQgeW91IGZpZ3VyZSBvdXQgd2hlbiBpdCdzIG5vdCBuZWVkZWQ/DQoNClRoZSBtb21l bnQgeW91IHRlbGwgdGhlIEhETUkgdHJhbnNtaXR0ZXIgeW91IGFyZSBnb2luZyB0byB0YWxrIHRv IHRoZSBtb25pdG9yIG5vdGhpbmcgZWxzZSBjYW4NCmZsb3cgb24gdGhlIGJ1cywgdXAgdW50aWwg eW91IGdyYWNlZnVsbHkgY2xvc2UgdGhlIHBhc3MgdGhyb3VnaCBzZXNzaW9uLCB3aGljaCBtZWFu cyBJIHdvdWxkbid0DQpyZWFsbHkgbmVlZCB0byBob2xkIHRoZSBwYXJlbnQgbG9jayBkdXJpbmcg dGhlIGVudGlyZSBkdXJhdGlvbiBvZiB0aGUgc2VsZWN0IGNhbGxiYWNrLCBJIHdvdWxkIG5lZWQN CnRvIGhvbGQgdGhlIHBhcmVudCBsb2NrIG9ubHkgZnJvbSBiZWZvcmUgdGhlIGxhc3Qgd3JpdGUg YXMgdGhhdCdzIHdoZW4gd2UgdGVsbCB0aGUgSERNSSB0cmFuc21pdHRlcg0KdG8gYWN0aXZhdGUg dGhlIHBhc3N0aHJvdWdoIG1vZGUsIGJ1dCBJIGd1ZXNzIGl0IHdvdWxkIG1ha2UgdGhlIGRyaXZl ciBoYXJkIHRvIG1haW50YWluIChhcyBpbg0Kb3RoZXJzIHdvdWxkIG5lZWQgdG8gdW5kZXJzdGFu ZCB0aGlzIHByb3Blcmx5IGJlZm9yZSBtYWtpbmcgYW55IGNoYW5nZXMpLCB3b3VsZG4ndCBpdD8N Cg0KPg0KPiA+IG9yIGlzIHRoaXMgZ29pbmcgdG8gYmUgYSBwYWluIHRvIG1haW50YWluPyBTaGFs bCBJIGp1c3Qga2VlcCBnb2luZyB3aXRoIHRoZSBwYXJlbnQtbG9ja2luZw0KPiA+IGJ1dCB1c2lu ZyBiYXJlIGkyYyB0cmFuc2FjdGlvbnMgb25seSB3aXRoaW4gc2VsZWN0IGFuZCBkZXNlbGVjdCBh bmQgbGVhdmUgcmVnbWFwDQo+ID4gdG8gZGVhbCB3aXRoIGV2ZXJ5dGhpbmcgZWxzZT8NCj4NCj4g VGhhdCdzIGEgcG9zc2liaWxpdHkuIFRha2UgY2FyZSB0byBub3QgbWVzcyB1cCBhbnkgY2FjaGVk IHN0YXRlIGluIHJlZ21hcCB0aG91Z2guDQoNClRoZSBvcmlnaW5hbCB2ZXJzaW9uIG9mIHRoZSBk cml2ZXIgd2Fzbid0IHVzaW5nIGFueSBjYWNoaW5nLCBzbyBJIGd1ZXNzIEkgd291bGQgbmVlZCB0 byBmYWxsYmFjaw0KZXhhY3RseSB0byB0aGUgc2FtZSBpbXBsZW1lbnRhdGlvbi4NCg0KU28sIHdo YXQgc2hvdWxkIEkgZG8/IFNob3VsZCBJIGtlZXAgdGhlIHBhcmVudC1sb2NraW5nLCB0aGUgdW5s b2NrZWQgZmxhdm91cnMgb2YgcmQvd3Ivcm13IGZyb20NCndpdGhpbiBzZWxlY3QvZGVzZWxlY3Qs IGFuZCBwdXQgYmFjayByZWdtYXAgYmFzZWQgcmQvd3Ivcm13IHdpdGggbm8gY2FjaGluZyBmb3Ig ZXZlcnl0aGluZyBlbHNlPw0KDQpUaGFuayB5b3UhDQoNCkZhYg0KDQo+IFRoZSByZWdpc3RlcnMg eW91IHRvdWNoIGZyb20gc2VsZWN0L2Rlc2VsZWN0IHNob3VsZCBwcm9iYWJseSBiZSB2b2xhdGls ZSBvcg0KPiBzb21ldGhpbmcgbGlrZSB0aGF0Pw0KPg0KPiBDaGVlcnMsDQo+IFBldGVyDQoNCg0K DQpSZW5lc2FzIEVsZWN0cm9uaWNzIEV1cm9wZSBMdGQsIER1a2VzIE1lYWRvdywgTWlsbGJvYXJk IFJvYWQsIEJvdXJuZSBFbmQsIEJ1Y2tpbmdoYW1zaGlyZSwgU0w4IDVGSCwgVUsuIFJlZ2lzdGVy ZWQgaW4gRW5nbGFuZCAmIFdhbGVzIHVuZGVyIFJlZ2lzdGVyZWQgTm8uIDA0NTg2NzA5Lg0K