linux-kernel - rk3288: Enable HDMI hang boot and no Linux log

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Message-ID: <CAD6G_RQqVJbPHosWV1YUf86-pK1YzvEYzy4=WG948iiXqbZw-w@mail.gmail.com>
Date:   Mon, 4 Sep 2017 18:14:56 +0530
From:   Jagan Teki <jagannadh.teki@...il.com>
To:     Mark Yao <mark.yao@...k-chips.com>,
        David Airlie <airlied@...ux.ie>,
        Heiko Stuebner <heiko@...ech.de>
Cc:     "linux-arm-kernel@...ts.infradead.org" 
        <linux-arm-kernel@...ts.infradead.org>,
        dri-devel@...ts.freedesktop.org,
        linux-rockchip@...ts.infradead.org,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: rk3288: Enable HDMI hang boot and no Linux log

Hi,

Is linux-next support HDMI on rk3288? I'm trying to enable hdmi (with
ddc-i2c-bus) statically along with Linux boot logo. Observed an kernel
boot hang, didn't find whats wrong because DWC MHL PHY as detected
from the log.

Here is the full log[1] please let me know if I miss any?

Log:
-----
[    1.983832] rockchip-drm display-subsystem: bound ff930000.vop (ops
0xc0f53418)
[    1.992170] rockchip-drm display-subsystem: bound ff940000.vop (ops
0xc0f53418)
[    2.000416] dwhdmi-rockchip ff980000.hdmi: Detected HDMI TX
controller v2.00a with HDCP (DWC MHL PHY)
[    2.011210] rockchip-drm display-subsystem: bound ff980000.hdmi
(ops 0xc0f551f4)
[    2.019490] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    2.026888] [drm] No driver support for vblank timestamp query.
[    2.033516] [drm] Cannot find any crtc or sizes
[    2.038731] [drm] Initialized rockchip 1.0.0 20140818 for
display-subsystem on minor 0
[    2.047818] hctosys: unable to open rtc device (rtc0)
[    2.053958]  mmcblk0: p1
[    2.057009] ttyS2 - failed to request DMA

[1] https://paste.ubuntu.com/25464674/

thanks!
-- 
Jagan Teki
Free Software Engineer | www.openedev.com
U-Boot, Linux | Upstream Maintainer
Hyderabad, India.