linux-kernel - Re: [PATCH 0/2] arm64: dts: amlogic: handle hdmi system clock

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Message-ID: <16ec9c9a-badb-4626-9227-fb03f0ee3ee6@linaro.org>
Date: Fri, 28 Jun 2024 10:10:22 +0200
From: Neil Armstrong <neil.armstrong@...aro.org>
To: Jerome Brunet <jbrunet@...libre.com>
Cc: Kevin Hilman <khilman@...libre.com>, linux-kernel@...r.kernel.org,
 linux-amlogic@...ts.infradead.org, devicetree@...r.kernel.org,
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>,
 Conor Dooley <conor+dt@...nel.org>
Subject: Re: [PATCH 0/2] arm64: dts: amlogic: handle hdmi system clock

Hi,

On 26/06/2024 17:27, Jerome Brunet wrote:
> This patchset adds the setup of the HDMI system clock for HDMI Tx.
> 
> This is another step in cleaning HDMI Tx and its direct usage of HHI
> register space. Eventually, this will help remove component usage from
> the Amlogic display drivers.

Thanks,

Beware we will need to keep old DT with new kernel functional for a while,
do removal of component & HHI in meson_dw_hdmi would need to wait for multiple
kernel releases.

A migration step would be to add a phandle to hhi right now, so we can drop
components earlier, then in a second time add a proper PHY and then mark
the hhi reg as deprecated.

Neil

> 
> Jerome Brunet (2):
>    arm64: dts: amlogic: gx: correct hdmi clocks
>    arm64: dts: amlogic: setup hdmi system clock
> 
>   arch/arm64/boot/dts/amlogic/meson-g12-common.dtsi | 5 +++++
>   arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi       | 9 +++++++--
>   arch/arm64/boot/dts/amlogic/meson-gxl.dtsi        | 9 +++++++--
>   3 files changed, 19 insertions(+), 4 deletions(-)
>