netdev - Re: [PATCH net-next 2/2] net: phy: mtk-ge-soc: Fix LED behavior if blinking is not set.

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Message-ID: <39d5d8af-0bac-4b91-85df-4e04a5835f53@lunn.ch>
Date: Fri, 23 May 2025 18:07:49 +0200
From: Andrew Lunn <andrew@...n.ch>
To: Sky Huang <SkyLake.Huang@...iatek.com>
Cc: Heiner Kallweit <hkallweit1@...il.com>,
	Russell King <linux@...linux.org.uk>,
	"David S. Miller" <davem@...emloft.net>,
	Eric Dumazet <edumazet@...gle.com>,
	Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>,
	Daniel Golle <daniel@...rotopia.org>,
	Qingfang Deng <dqfext@...il.com>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	linux-kernel@...r.kernel.org, netdev@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH net-next 2/2] net: phy: mtk-ge-soc: Fix LED behavior if
 blinking is not set.

On Fri, May 23, 2025 at 07:36:01PM +0800, Sky Huang wrote:
> From: Sky Huang <skylake.huang@...iatek.com>
> 
> If delay_on==0 and delay_off==0 are passed to
> mt798x_2p5ge_phy_led_blink_set() and mtk_phy_led_num_dly_cfg(),
> blinking is actually not set. So don't clean "LED on" status under
> this circumstance.

Actually, i think mtk_phy_led_num_dly_cfg() is wrong.

https://docs.kernel.org/leds/leds-class.html#hardware-accelerated-blink-of-leds

   The blink_set() function should choose a user friendly blinking
   value if it is called with *delay_on==0 && *delay_off==0
   parameters. In this case the driver should give back the chosen
   value through delay_on and delay_off parameters to the leds
   subsystem.

That is not what mtk_phy_led_num_dly_cfg() does.

    Andrew

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