From: Andrew Lunn <andrew@lunn.ch>
To: Fabio Estevam <festevam@gmail.com>
Cc: kernel@pengutronix.de, shawnguo@kernel.org, linux-imx@nxp.com,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 3/4] ARM: dts: imx6ul-14x14-evk: Describe the KSZ8081 reset
Date: Fri, 8 Jan 2021 02:03:40 +0100 [thread overview]
Message-ID: <X/evbCEyGMPiEhpY@lunn.ch> (raw)
In-Reply-To: <20210107235044.7897-3-festevam@gmail.com>
On Thu, Jan 07, 2021 at 08:50:43PM -0300, Fabio Estevam wrote:
> There are two KSZ8081 on the imx6ul-14x14-evk: one has the reset line
> controlled by the Q1 output of the 74LV595PW expander, and the other
> by the Q2 output.
>
> The KSZ8081 datasheet states that the tsr parameter (Stable supply
> voltage (VDDIO, VDDA_3.3) to reset high) to be 10ms minimum and
> "After the de-assertion of reset, wait a minimum of 100 µs before
> starting programming on the MIIM (MDC/MDIO) interface."
>
> Describe these parameters in the devicetree.
>
> Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Andrew
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next prev parent reply other threads:[~2021-01-08 1:05 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-01-07 23:50 [PATCH 1/4] ARM: dts: imx6ul-14x14-evk: Fix SPI chipselect polarity Fabio Estevam
2021-01-07 23:50 ` [PATCH 2/4] ARM: dts: imx6ul-14x14-evk: Enable the GPIO expander Fabio Estevam
2021-01-08 1:02 ` Andrew Lunn
2021-01-18 0:10 ` Shawn Guo
2021-01-07 23:50 ` [PATCH 3/4] ARM: dts: imx6ul-14x14-evk: Describe the KSZ8081 reset Fabio Estevam
2021-01-08 1:03 ` Andrew Lunn [this message]
2021-01-18 0:10 ` Shawn Guo
2021-03-10 11:04 ` Joakim Zhang
2021-03-11 11:33 ` Joakim Zhang
2021-03-11 14:17 ` Andrew Lunn
2021-03-12 2:02 ` Joakim Zhang
2021-03-12 11:34 ` Fabio Estevam
2021-01-07 23:50 ` [PATCH 4/4] ARM: dts: imx6ul-14x14-evk: Add camera support Fabio Estevam
2021-01-18 0:11 ` Shawn Guo
2021-01-18 0:09 ` [PATCH 1/4] ARM: dts: imx6ul-14x14-evk: Fix SPI chipselect polarity Shawn Guo
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