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Tue, 17 Jan 2023 20:50:33 -0800 (PST) Received: from 753933720722 named unknown by gmailapi.google.com with HTTPREST; Tue, 17 Jan 2023 20:50:32 -0800 MIME-Version: 1.0 In-Reply-To: References: <20230106030108.2542081-1-swboyd@chromium.org> From: Stephen Boyd User-Agent: alot/0.10 Date: Tue, 17 Jan 2023 20:50:32 -0800 Message-ID: Subject: Re: [PATCH] drm/panel: boe-tv101wum-nl6: Ensure DSI writes succeed during disable To: Dave Stevenson Cc: Thierry Reding , Rob Clark , Douglas Anderson , Jitao Shi , yangcong , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, patches@lists.linux.dev, linux-mediatek@lists.infradead.org, Dmitry Baryshkov , Sam Ravnborg , linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230117_205036_942913_D0F478CF X-CRM114-Status: GOOD ( 27.85 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org UXVvdGluZyBEYXZlIFN0ZXZlbnNvbiAoMjAyMy0wMS0xNiAwNjoxMTowMikKPiBIaSBTdGVwaGVu Cj4KPiBPbiBGcmksIDEzIEphbiAyMDIzIGF0IDIxOjEyLCBTdGVwaGVuIEJveWQgPHN3Ym95ZEBj aHJvbWl1bS5vcmc+IHdyb3RlOgo+ID4KPiA+Cj4gPiBUaGFua3MgZm9yIHRoZSBpbmZvISBJdCBz YXlzICJEcml2ZXJzIHRoYXQgbmVlZCB0aGUgdW5kZXJseWluZyBkZXZpY2UgdG8KPiA+IGJlIHBv d2VyZWQgdG8gcGVyZm9ybSB0aGVzZSBvcGVyYXRpb25zIHdpbGwgZmlyc3QgbmVlZCB0byBtYWtl IHN1cmUgaXTigJlzCj4gPiBiZWVuIHByb3Blcmx5IGVuYWJsZWQuIiBEb2VzIHRoYXQgbWVhbiB0 aGUgcGFuZWwgZHJpdmVyIG5lZWRzIHRvIG1ha2UKPiA+IHN1cmUgdGhlIHVuZGVybHlpbmcgZHNp IGhvc3QgZGV2aWNlIGlzIHBvd2VyZWQ/IFRoZSBzZW50ZW5jZSBpcyB0b28KPiA+IGFtYmlndW91 cyBmb3IgbWUgdG8gdW5kZXJzdGFuZCB3aGF0ICdkcml2ZXJzJyBhbmQgJ3VuZGVybHlpbmcgZGV2 aWNlJwo+ID4gYXJlLgo+Cj4gVGhlIERTSSBob3N0IGRyaXZlciAoaWUgaW4geW91ciBjYXNlIHNv bWV0aGluZyB1bmRlcgo+IGRyaXZlcnMvZ3B1L2RybS9tc20vZHNpKSBzaG91bGQgZW5zdXJlIHRo YXQgYSB0cmFuc2ZlciBjYW4gYmUgbWFkZSwKPiByZWdhcmRsZXNzIG9mIHN0YXRlLgo+Cj4gSSBt dXN0IHNheSB0aGF0IHRoaXMgaGFzIGJlZW4gZG9jdW1lbnRlZCBhcyB0aGUgY2FzZSwgYnV0IGRv ZXNuJ3QKPiBuZWNlc3NhcmlseSByZWZsZWN0IHJlYWxpdHkgaW4gYSBudW1iZXIgb2YgZHJpdmVy cy4KCkFscmlnaHQsIHRoYW5rcyBmb3IgdGhlIGNsYXJpZmljYXRpb24uCgo+ID4KPiA+IENvb2wu IEdsYWQgdGhhdCB3ZSBjYW4gY2xlYW4gdGhhdCB1cCB3aXRoIHlvdXIgc2VyaWVzLgo+ID4KPiA+ IElzIGl0IHdyb25nIHRvIHNwbGl0IHVucHJlcGFyZSB0byBhIGRpc2FibGUgYW5kIHVucHJlcGFy ZSBwaGFzZT8gSSdtIG5vdAo+ID4gc3VwZXIga2VlbiBvbiBmaXhpbmcgNi4xIHN0YWJsZSBrZXJu ZWxzIGJ5IG9wdGluZyB0aGlzIGRyaXZlciBpbnRvIHRoZQo+ID4gb3JkZXJpbmcgY2hhbmdlLiBT cGxpdHRpbmcgdGhlIHBoYXNlIGludG8gdHdvIGlzIHNtYWxsIGFuZCBzaW1wbGUgYW5kCj4gPiB3 b3Jrcy4gSSBzdXNwZWN0IGNoYW5naW5nIHRoZSBvcmRlcmluZyBtYXkgdW5jb3ZlciBtb3JlIGJ1 Z3MsIG9yIGJlIGEKPiA+IGxhcmdlciB0YXNrLiBJJ2QgYmUgZ2xhZCB0byB0ZXN0IHRoYXQgc2Vy aWVzWzJdIGZyb20geW91IHRvIGdldCByaWQgb2YKPiA+IFszXS4KPgo+IEFoLCBJIGhhZG4ndCBy ZWFsaXNlZCBpdCB3YXMgYSByZWdyZXNzaW9uIGluIGEgcmVsZWFzZWQga2VybmVsIDooCj4KPiBT cGxpdHRpbmcgaW50byBhIGRpc2FibGUgYW5kIHVucHJlcGFyZSBpcyB0b3RhbGx5IGZpbmUuIE5v cm1hbGx5Cj4gZGlzYWJsZSB3b3VsZCBub3JtYWxseSBkaXNhYmxlIHRoZSBwYW5lbCBhbmQgYmFj a2xpZ2h0IChwcm9iYWJseSBieQo+IGRybV9wYW5lbCBiZWZvcmUgdGhlIHBhbmVsIGRpc2FibGUg Y2FsbCksIHdpdGggdW5wcmVwYXJlIGRpc2FibGluZwo+IHBvd2VyIGFuZCBjbG9ja3MKPgo+IERv IG5vdGUgdGhhdCBBSVVJIHlvdSB3aWxsIGJlIHRlbGxpbmcgdGhlIHBhbmVsIHRvIGVudGVyIHNs ZWVwIG1vZGUKPiB3aGlsc3QgdmlkZW8gaXMgc3RpbGwgYmVpbmcgdHJhbnNtaXR0ZWQuIFRoYXQg c2hvdWxkIGJlIHNhZmUgYXMgdGhlCj4gcGFuZWwgaGFzIHRvIHN0aWxsIGJlIHBhcnRpYWxseSBh Y3RpdmUgdG8gaGFuZGxlIGFuIGV4aXQgc2xlZXAgbW9kZQo+IGNvbW1hbmQsIGJ1dCBhY3R1YWxs eSBwb3dlcmluZyBoYXJkd2FyZSBkb3duIGF0IHRoYXQgcG9pbnQgY291bGQgY2F1c2UKPiBEU0kg YnVzIGFyYml0cmF0aW9uIGVycm9ycyBhcyBjbG9jayBvciBkYXRhIGxhbmVzIGNvdWxkIGJlIHB1 bGxlZCBkb3duCj4gd2hlbiB0aGUgaG9zdCBpcyB0cnlpbmcgdG8gYWRvcHQgSFMgb3IgTFAxMS4K PgoKT2suIEkgZG9uJ3QgdGhpbmsgSSdtIHJ1bm5pbmcgaW50byB0aGF0IGlzc3VlLCBidXQgSSBo YXZlIHJ1biBpbnRvIGEKZGlmZmVyZW50IGlzc3VlLiBJIHRyaWVkIHRvIHNwbGl0IHRoZSBwcmVw YXJlIHBoYXNlIGludG8gZW5hYmxlIGFuZApwcmVwYXJlIHdpdGggdGhlIERTSSB3cml0ZXMgaW4g dGhlIGVuYWJsZSB0byBtYWtlIHRoaW5ncyBzeW1tZXRyaWMgYnV0CnRoYXQgdG90YWxseSBmYWls ZWQuIE5vdyBJIGdldCBsb3RzIG9mIHRpbWVvdXRzIHdoZW4gZW5hYmxpbmcgdGhlIHBhbmVsLgoK VGhpcyBwYXRjaCBpcyBzdGlsbCB0aGUgYmVzdCBmaXggSSBoYXZlLiBNYXliZSB3aXRoIHlvdXIg c2VyaWVzIHdlIGNhbgpjb21iaW5lIHRoZSB1bnByZXBhcmUgYW5kIGRpc2FibGUgb3BzIHRvZ2V0 aGVyIGFnYWluIChpLmUuIHJldmVydCB0aGlzKQpzbyB0aGF0IHBvd2VyIGlzIHJlbW92ZWQgaW1t ZWRpYXRlbHkgYWZ0ZXIgc2VuZGluZyB0aGUgRFNJIGNvbW1hbmRzPyAgT3IKaXMgdGhhdCBub3Qg ZW5vdWdoIHRvIGF2b2lkIHRoZSBEU0kgYnVzIGFyYml0cmF0aW9uIHByb2JsZW1zIHlvdSdyZQp0 YWxraW5nIGFib3V0PyBXaGVuIGlzIHRoZSBob3N0IGFkb3B0aW5nIEhTIG9yIExQMTEgd2l0aCBy ZWdhcmRzIHRvIHRoZQpicmlkZ2Ugb3BzPwoKX19fX19fX19fX19fX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX18KbGludXgtYXJtLWtlcm5lbCBtYWlsaW5nIGxpc3QKbGludXgtYXJt LWtlcm5lbEBsaXN0cy5pbmZyYWRlYWQub3JnCmh0dHA6Ly9saXN0cy5pbmZyYWRlYWQub3JnL21h aWxtYW4vbGlzdGluZm8vbGludXgtYXJtLWtlcm5lbAo=