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From: Marek Szyprowski <m.szyprowski@samsung.com>
To: Saravana Kannan <saravanak@google.com>,
	Rob Herring <robh+dt@kernel.org>,
	Frank Rowand <frowand.list@gmail.com>
Cc: Andrew Lunn <andrew@lunn.ch>,
	netdev@vger.kernel.org, kernel-team@android.com,
	devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
	Neil Armstrong <narmstrong@baylibre.com>,
	linux-amlogic@lists.infradead.org
Subject: Re: [PATCH v2] of: property: fw_devlink: Add support for "phy-handle" property
Date: Mon, 23 Aug 2021 14:08:48 +0200	[thread overview]
Message-ID: <0a2c4106-7f48-2bb5-048e-8c001a7c3fda@samsung.com> (raw)
In-Reply-To: <20210818021717.3268255-1-saravanak@google.com>

Hi,

On 18.08.2021 04:17, Saravana Kannan wrote:
> Allows tracking dependencies between Ethernet PHYs and their consumers.
>
> Cc: Andrew Lunn <andrew@lunn.ch>
> Cc: netdev@vger.kernel.org
> Signed-off-by: Saravana Kannan <saravanak@google.com>

This patch landed recently in linux-next as commit cf4b94c8530d ("of: 
property: fw_devlink: Add support for "phy-handle" property"). It breaks 
ethernet operation on my Amlogic-based ARM64 boards: Odroid C4 
(arm64/boot/dts/amlogic/meson-sm1-odroid-c4.dts) and N2 
(meson-g12b-odroid-n2.dts) as well as Khadas VIM3/VIM3l 
(meson-g12b-a311d-khadas-vim3.dts and meson-sm1-khadas-vim3l.dts).

In case of OdroidC4 I see the following entries in the 
/sys/kernel/debug/devices_deferred:

ff64c000.mdio-multiplexer
ff3f0000.ethernet

Let me know if there is anything I can check to help debugging this issue.

> ---
> v1 -> v2:
> - Fixed patch to address my misunderstanding of how PHYs get
>    initialized.
>
>   drivers/of/property.c | 2 ++
>   1 file changed, 2 insertions(+)
>
> diff --git a/drivers/of/property.c b/drivers/of/property.c
> index 931340329414..0c0dc2e369c0 100644
> --- a/drivers/of/property.c
> +++ b/drivers/of/property.c
> @@ -1291,6 +1291,7 @@ DEFINE_SIMPLE_PROP(pwms, "pwms", "#pwm-cells")
>   DEFINE_SIMPLE_PROP(resets, "resets", "#reset-cells")
>   DEFINE_SIMPLE_PROP(leds, "leds", NULL)
>   DEFINE_SIMPLE_PROP(backlight, "backlight", NULL)
> +DEFINE_SIMPLE_PROP(phy_handle, "phy-handle", NULL)
>   DEFINE_SUFFIX_PROP(regulators, "-supply", NULL)
>   DEFINE_SUFFIX_PROP(gpio, "-gpio", "#gpio-cells")
>   
> @@ -1379,6 +1380,7 @@ static const struct supplier_bindings of_supplier_bindings[] = {
>   	{ .parse_prop = parse_resets, },
>   	{ .parse_prop = parse_leds, },
>   	{ .parse_prop = parse_backlight, },
> +	{ .parse_prop = parse_phy_handle, },
>   	{ .parse_prop = parse_gpio_compat, },
>   	{ .parse_prop = parse_interrupts, },
>   	{ .parse_prop = parse_regulators, },

Best regards
-- 
Marek Szyprowski, PhD
Samsung R&D Institute Poland


  parent reply	other threads:[~2021-08-23 12:08 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-08-18  2:17 Saravana Kannan
2021-08-18 17:00 ` Rob Herring
     [not found] ` <CGME20210823120849eucas1p11d3919886444358472be3edd1c662755@eucas1p1.samsung.com>
2021-08-23 12:08   ` Marek Szyprowski [this message]
2021-08-23 12:42     ` Rob Herring
2021-08-23 13:16     ` Andrew Lunn
2021-08-23 18:13       ` Saravana Kannan
2021-08-23 19:50         ` Andrew Lunn
2021-08-24  6:52       ` Marek Szyprowski
2021-08-23 18:22     ` Saravana Kannan
2021-08-23 19:58       ` Andrew Lunn
2021-08-23 20:48         ` Saravana Kannan
2021-08-23 22:01           ` Andrew Lunn
2021-08-23 22:08           ` Rob Herring
2021-08-24  7:03       ` Marek Szyprowski
2021-08-24  7:31         ` Saravana Kannan
2021-09-01  2:37           ` Saravana Kannan
2021-09-01  7:22             ` Marek Szyprowski
2021-09-08 21:58               ` [PATCH v1] RFC: of: property: fix phy-hanlde issue Saravana Kannan
2021-09-09  8:03                 ` Marek Szyprowski
2021-09-14  0:54                   ` Saravana Kannan
2021-09-14  4:44                     ` Saravana Kannan
2021-09-14  6:15                       ` Marek Szyprowski

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