linux-kernel - Re: [PATCH v3 3/5] arm64: dts: rockchip: Enable HDMI output on RK3368-Lion-Haikou

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Message-ID: <10786293.qUNvkh4Gvn@diego>
Date: Thu, 15 Jan 2026 10:35:38 +0100
From: Heiko Stübner <heiko@...ech.de>
To: Chaoyi Chen <chaoyi.chen@...k-chips.com>
Cc: quentin.schulz@...rry.de, linux-arm-kernel@...ts.infradead.org,
 linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org,
 Heiko Stuebner <heiko.stuebner@...rry.de>
Subject:
 Re: [PATCH v3 3/5] arm64: dts: rockchip: Enable HDMI output on
 RK3368-Lion-Haikou

Hi,

Am Donnerstag, 15. Januar 2026, 02:25:34 Mitteleuropäische Normalzeit schrieb Chaoyi Chen:
> On 1/15/2026 7:07 AM, Heiko Stuebner wrote:
> > From: Heiko Stuebner <heiko.stuebner@...rry.de>
> > 
> > Enable the VOP and HDMI controller on the Lion-Haikou board.
> > 
> > Signed-off-by: Heiko Stuebner <heiko.stuebner@...rry.de>
> > ---
> >  .../boot/dts/rockchip/rk3368-lion-haikou.dts     | 16 ++++++++++++++++
> >  arch/arm64/boot/dts/rockchip/rk3368-lion.dtsi    |  5 +++++
> >  2 files changed, 21 insertions(+)
> > 
> 
> I guess NPLL is an independent PLL available for VOP, 
> could you give it a try?

not really sure what you mean here.

The VOP-binding specifies the aclk, dclk and hclk clocks.

The NPLL is a possible source for quite a lot of peripherals on the rk3368
aclk_cci_pre,  sclk_tcp, vepu/vdpu, hevc, isp, gpu, gmac

So it's definitly not dedicated to the VOP, and thus should not
change frequency for the VOP alone, because that could affect
other blocks.


Heiko