linux-kernel - Re: [PATCH v3 2/3] drm/rockchip: dw_hdmi: introduce the VPLL clock setting

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Date:   Wed, 14 Jun 2017 10:35:21 -0500
From:   Rob Herring <robh@...nel.org>
To:     Mark Yao <mark.yao@...k-chips.com>
Cc:     David Airlie <airlied@...ux.ie>,
        Mark Rutland <mark.rutland@....com>,
        Heiko Stuebner <heiko@...ech.de>,
        dri-devel@...ts.freedesktop.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 2/3] drm/rockchip: dw_hdmi: introduce the VPLL clock
 setting

On Fri, Jun 09, 2017 at 03:10:41PM +0800, Mark Yao wrote:
> For RK3399 HDMI, there is an external clock need for HDMI PHY,
> and it should keep the same clock rate with VOP DCLK.
> 
> VPLL have supported the clock for HDMI PHY, but there is no
> clock divider bewteen VPLL and HDMI PHY. So we need to set the
> VPLL rate manually in HDMI driver.
> 
> Signed-off-by: Yakir Yang <ykk@...k-chips.com>
> Signed-off-by: Mark Yao <mark.yao@...k-chips.com>
> ---
> Changes in v3: none
> Changes in v2: describe vpll on Documentation.
> 
>  .../bindings/display/rockchip/dw_hdmi-rockchip.txt |  2 +-

Acked-by: Rob Herring <robh@...nel.org>

>  drivers/gpu/drm/rockchip/dw_hdmi-rockchip.c        | 25 +++++++++++++++++++++-
>  2 files changed, 25 insertions(+), 2 deletions(-)