linux-kernel - Re: [PATCH 1/3] dt-bindings: soc: imx: add fdcc clock to i.MX8MP hdmi blk ctrl

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Date: Sun, 7 Jan 2024 11:53:03 +0100
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: Adam Ford <aford173@...il.com>, linux-pm@...r.kernel.org
Cc: Rob Herring <robh+dt@...nel.org>,
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
 Conor Dooley <conor+dt@...nel.org>, Shawn Guo <shawnguo@...nel.org>,
 Sascha Hauer <s.hauer@...gutronix.de>,
 Pengutronix Kernel Team <kernel@...gutronix.de>,
 Fabio Estevam <festevam@...il.com>, NXP Linux Team <linux-imx@....com>,
 Ulf Hansson <ulf.hansson@...aro.org>, Lucas Stach <l.stach@...gutronix.de>,
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/3] dt-bindings: soc: imx: add fdcc clock to i.MX8MP hdmi
 blk ctrl

On 06/01/2024 23:39, Adam Ford wrote:
> Per guidance from the NXP downstream kernel, if the clock is
> disabled before HDMI/LCDIF probe, LCDIF will not get pixel
> clock from HDMI PHY and throw an error.  Fix this by adding
> the fdcc clock to the hdmi_blk_ctrl.
> 

Adding a required clock is ABI break and commit msg is not clear whether
this was actually necessary or how did it worked so far...

Best regards,
Krzysztof