linux-kernel - Re: [PATCH RFC v2 1/8] drm/bridge: dw-hdmi: Add SCDC and TMDS Scrambling support

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Message-ID: <2505786.uGvT2qSv2r@phil>
Date:   Fri, 14 Dec 2018 13:12:23 +0100
From:   Heiko Stuebner <heiko@...ech.de>
To:     Neil Armstrong <narmstrong@...libre.com>
Cc:     architt@...eaurora.org, a.hajda@...sung.com,
        Laurent.pinchart@...asonboard.com,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Sandy Huang <hjc@...k-chips.com>, maxime.ripard@...tlin.com,
        dri-devel@...ts.freedesktop.org, linux-amlogic@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Nickey Yang <nickey.yang@...k-chips.com>,
        Huicong Xu <xhc@...k-chips.com>
Subject: Re: [PATCH RFC v2 1/8] drm/bridge: dw-hdmi: Add SCDC and TMDS Scrambling support

Am Freitag, 30. November 2018, 14:42:54 CET schrieb Neil Armstrong:
> Add support for SCDC Setup for TMDS Clock > 3.4GHz and enable TMDS
> Scrambling when supported or mandatory.
> 
> This patch also adds an helper to setup the control bit to support
> the high TMDS Bit Period/TMDS Clock-Period Ratio as required with
> TMDS Clock > 3.4GHz for HDMI2.0 3840x2160@...50 modes.
> 
> These changes were based on work done by Huicong Xu <xhc@...k-chips.com>
> and Nickey Yang <nickey.yang@...k-chips.com> to support HDMI2.0 modes
> on the Rockchip 4.4 BSP kernel at [1]
> 
> [1] https://github.com/rockchip-linux/kernel/tree/release-4.4
> 
> Cc: Nickey Yang <nickey.yang@...k-chips.com>
> Cc: Huicong Xu <xhc@...k-chips.com>
> Signed-off-by: Neil Armstrong <narmstrong@...libre.com>

sorry this took a bit longer, but I can confirm that the 4 relevant
patches (1, 4, 5, 6) at least still provide 1080p hdmi output on
rk3288 (with internal hdmiphy) and rk3328 (with external innosilicon
hdmiphy). I don't know how to test newly added features, but at
least the patches don't seem to break existing users, so

on rk3288 and rk3328
Tested-by: Heiko Stuebner <heiko@...ech.de>