From: andrew@lunn•ch (Andrew Lunn)
To: linux-arm-kernel@lists•infradead.org
Subject: [PATCH v6 11/11] of: mdio: Prevent of_mdiobus_register from scanning mdio-mux nodes
Date: Wed, 27 Sep 2017 16:12:13 +0200 [thread overview]
Message-ID: <20170927141213.GF13516@lunn.ch> (raw)
In-Reply-To: <20170927073414.17361-12-clabbe.montjoie@gmail.com>
On Wed, Sep 27, 2017 at 09:34:14AM +0200, Corentin Labbe wrote:
> Each child node of an MDIO node is scanned as a PHY when calling
> of_mdiobus_register() givint the following result:
> [ 18.175379] mdio_bus stmmac-0: /soc/ethernet at 1c30000/mdio/mdio-mux has invalid PHY address
> [ 18.175408] mdio_bus stmmac-0: scan phy mdio-mux at address 0
> [ 18.175450] mdio_bus stmmac-0: scan phy mdio-mux at address 1
> [...]
> [ 18.176420] mdio_bus stmmac-0: scan phy mdio-mux at address 30
> [ 18.176452] mdio_bus stmmac-0: scan phy mdio-mux at address 31
>
> Since mdio-mux nodes are not PHY, this patch a way to to not scan
> them.
Hi Corentin
I still don't like this, but ...
>
> Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail•com>
> ---
> drivers/of/of_mdio.c | 10 ++++++++++
> 1 file changed, 10 insertions(+)
>
> diff --git a/drivers/of/of_mdio.c b/drivers/of/of_mdio.c
> index d94dd8b77abd..d90ddb0d90f2 100644
> --- a/drivers/of/of_mdio.c
> +++ b/drivers/of/of_mdio.c
> @@ -190,6 +190,10 @@ int of_mdiobus_register(struct mii_bus *mdio, struct device_node *np)
> struct device_node *child;
> bool scanphys = false;
> int addr, rc;
> + static const struct of_device_id do_not_scan[] = {
> + { .compatible = "mdio-mux" },
> + {}
> + };
Please rename this to some less generic. What i don't want is other
compatible strings added here. We want to make the exception for
muxes, but nothing else. So something like compatible_muxes?
Andrew
next prev parent reply other threads:[~2017-09-27 14:12 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-09-27 7:34 [PATCH v6 00/11] net: stmmac: dwmac-sun8i: Handle integrated PHY Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 01/11] dt-bindings: net: Restore sun8i dwmac binding Corentin Labbe
2017-10-05 20:59 ` Rob Herring
2017-09-27 7:34 ` [PATCH v6 02/11] arm: dts: sunxi: Restore EMAC changes Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 03/11] arm64: dts: allwinner: " Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 04/11] net: stmmac: sun8i: Restore the compatibles Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 05/11] dt-bindings: net: dwmac-sun8i: update documentation about integrated PHY Corentin Labbe
2017-09-27 10:15 ` Maxime Ripard
2017-09-27 14:02 ` Andrew Lunn
2017-09-28 7:37 ` Corentin Labbe
2017-10-04 19:00 ` Corentin Labbe
2017-10-08 18:33 ` Corentin Labbe
2017-10-09 21:08 ` Maxime Ripard
2017-09-28 4:53 ` Florian Fainelli
2017-09-28 7:07 ` Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 06/11] ARM: dts: sunxi: h3/h5: represent the mdio switch used by sun8i-h3-emac Corentin Labbe
2017-09-27 10:16 ` Maxime Ripard
2017-09-27 13:47 ` Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 07/11] arm64: dts: allwinner: add snps, dwmac-mdio compatible to emac/mdio Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 08/11] net: stmmac: snps, dwmac-mdio MDIOs are automatically registered Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 09/11] net: stmmac: dwmac-sun8i: choose internal PHY via phy-is-integrated Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 10/11] net: stmmac: dwmac-sun8i: Handle integrated/external MDIOs Corentin Labbe
2017-09-27 7:34 ` [PATCH v6 11/11] of: mdio: Prevent of_mdiobus_register from scanning mdio-mux nodes Corentin Labbe
2017-09-27 14:12 ` Andrew Lunn [this message]
2017-09-28 4:50 ` Florian Fainelli
2017-10-05 22:09 ` Rob Herring
2017-10-05 22:21 ` Andrew Lunn
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