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[209.132.180.67]) by mx.google.com with ESMTP id x2si3107459pgk.223.2019.06.19.06.44.35; Wed, 19 Jun 2019 06:44:51 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com header.s=20161025 header.b=OIdFgOci; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=QUARANTINE dis=NONE) header.from=gmail.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727244AbfFSNoV (ORCPT + 99 others); Wed, 19 Jun 2019 09:44:21 -0400 Received: from mail-lf1-f65.google.com ([209.85.167.65]:43389 "EHLO mail-lf1-f65.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726047AbfFSNoU (ORCPT ); Wed, 19 Jun 2019 09:44:20 -0400 Received: by mail-lf1-f65.google.com with SMTP id j29so12158816lfk.10; Wed, 19 Jun 2019 06:44:19 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Sh/qIBw1XKDUdQ0Wxpr8WG15MJA13mpU4YtnzOpaKLE=; b=OIdFgOcig0sQN7irVtXlKzuUYnNpdV1QiD1wZV9NUpIz3rzt9QrMhB2vZdMgO0dDZ5 N05RhZia6MmkDuZ9lReuExcnttV/eCkIHQgXv/bZyL0H2+jP84zT/qvY96zXDf4iJop7 UQyt7pn+TmFRgSRFTdk2qnP0JvNi5N6WNQWx0sWNnI/PczhgPk4YRwlkPDEM98kTV7wX Ei2qA5i40HrzUql+JbtY/4oYdMRtBrcpkVpmBHsd1GrLZcDURYD1zf2IPuovqT1PZ3jA NeBkY8lEZtzL6WQs4D644wb00nPn5IdFpZssFJDs5AGV5X4+jfZu2clZjaHYEiJUIIji Vokg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Sh/qIBw1XKDUdQ0Wxpr8WG15MJA13mpU4YtnzOpaKLE=; b=s3wPYw1fGvCo5/eGhk7T2Ytkub/vVuqcBPZqRZAITHzxfUAhCaI/k+TOBmbKJy7C+C ENwhoJi6Wv8zxnSkao+WHc4hXW5x9772k67IHIo91PElNvEl4fuNtfFf5uIZwmFF8lcR Hxn2oOW4FQR2W2l0ipWrB5qwurGbHBY87bNXlUgjfNsw/RfOv52iLEeOE00/WaD29EOj hvbkpZw0FPtD2Yicz5mpLqPWbuWcsP4oPWwkbPuFiUz9/O+yENLRpTpuu1oevniacxNy CNYlk1aEe+mW2OgqTUaQupIjwNiAOf1ZMWIXPi1nZeC7z/w293L8oXtpIrjlAXmHvsFa 5T0w== X-Gm-Message-State: APjAAAUWANhfHEOHB5uIvCGsRvbZYCrVdP1E9bqA2sTUnwt1bXZXkR3J 8LY+daKT0KnpNiX+aVzEUbnm/1JAdf9SnrLR0Ks= X-Received: by 2002:a05:6512:29a:: with SMTP id j26mr28443954lfp.44.1560951858594; Wed, 19 Jun 2019 06:44:18 -0700 (PDT) MIME-Version: 1.0 References: In-Reply-To: From: Fabio Estevam Date: Wed, 19 Jun 2019 10:44:31 -0300 Message-ID: Subject: Re: [IMX] [DRM]: suspend/resume support To: Pintu Agarwal Cc: open list , "moderated list:ARM/FREESCALE IMX / MXC ARM ARCHITECTURE" , Kernelnewbies , linux-pm@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Jun 19, 2019 at 10:33 AM Pintu Agarwal wrote: > You can think that the version I am using right now is almost 4.9 itself. "almost 4.9" does not help, sorry. > Upgrading again to higher kernel version is again difficult, also > customer does not want it. dw-hdmi is well supported on i.MX6 with mainline, so you could simply try that. Try booting 5.1.11 on your custom board with a very minimal dts with HDMI support. Then you can test suspend/resume and see if HDMI hangs or not. > Another approach I tried is, installing hdmi {dw-hdmi.ko, > dw_hdmi-imx.ko} as a module, just after the resume. > With this also system hangs during installation of dw_hdmi-imx.ko at > below location: > > imx_drm_driver_load(..) > | > |--> component_bind_all(...) > | > |-> component_bind(ipu) > | > | > ipu_drm_bind(..) > | > |-> ipu_crtc_init(..) > | > |-> ipu_plane_irq(..) > | > | ----> << __HANGS HERE__ >> I am not able to reproduce this hang. As I mentioned yesterday suspend/resume is working just fine. We would be glad to help fixing the hang if you could reproduce it with a mainline kernel.