From: "Russell King (Oracle)" <linux@armlinux.org.uk>
To: lizhe <sensor1010@163.com>
Cc: Andrew Lunn <andrew@lunn.ch>,
andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com,
kuba@kernel.org, pabeni@redhat.com, mcoquelin.stm32@gmail.com,
alexandre.torgue@foss.st.com, vladimir.oltean@nxp.com,
maxime.chevallier@bootlin.com, netdev@vger.kernel.org,
linux-stm32@st-md-mailman.stormreply.com,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Subject: Re: Re: Re: Re: [PATCH] net: stmmac: Support gpio high-level reset for devices requiring it
Date: Wed, 9 Jul 2025 15:29:46 +0100 [thread overview]
Message-ID: <aG582lPgpOr8oyyx@shell.armlinux.org.uk> (raw)
In-Reply-To: <4cfb4aab.9588.197eefef55f.Coremail.sensor1010@163.com>
On Wed, Jul 09, 2025 at 07:42:55PM +0800, lizhe wrote:
> Hi,
> i have already declared it in the DTS.
>
> &gmac {
> snps,reset-gpio = <&gpio3 RK_PB7 GPIO_ACTIVE_HIGH>;
> };
Active high means that the reset is in effect when the output is at the
logic '1' state. So, gpiod_get_value*() will return the same as
gpiod_get_raw_value*().
Active low means that the reset is in effect when the output is at the
logic '0' state, and in that case the return value of
gpiod_get_value*() will return true when the reset is active (at logic
'0' state) whereas gpiod_get_raw_value*() will return zero.
--
RMK's Patch system: https://www.armlinux.org.uk/developer/patches/
FTTP is here! 80Mbps down 10Mbps up. Decent connectivity at last!
next prev parent reply other threads:[~2025-07-09 14:30 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-07-08 16:50 Lizhe
2025-07-08 17:34 ` Andrew Lunn
[not found] ` <5c7adfef.1876.197ece74c25.Coremail.sensor1010@163.com>
2025-07-09 4:26 ` Russell King (Oracle)
[not found] ` <5bb49dc0.6933.197ee28444e.Coremail.sensor1010@163.com>
2025-07-09 11:11 ` Russell King (Oracle)
[not found] ` <4cfb4aab.9588.197eefef55f.Coremail.sensor1010@163.com>
2025-07-09 14:29 ` Russell King (Oracle) [this message]
[not found] ` <2352b745.a454.197efeef829.Coremail.sensor1010@163.com>
2025-07-09 17:01 ` Re: " Andrew Lunn
2025-07-09 17:41 ` Russell King (Oracle)
2025-07-09 12:54 ` Andrew Lunn
2025-07-08 17:40 ` Russell King (Oracle)
[not found] ` <2588871d.189d.197ece7c486.Coremail.sensor1010@163.com>
2025-07-09 4:25 ` Russell King (Oracle)
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