netdev - Re: [PATCH 2/2] net: stmmac: add fixed_phy and phy

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Message-ID: <CACVXFVPDjArXCoghEsp9g9UjDLqUaB06kT_skN7Vwy43JfXaaA@mail.gmail.com>
Date:	Fri, 23 Jan 2015 12:57:24 +0800
From:	Ming Lei <ming.lei@...onical.com>
To:	Florian Fainelli <f.fainelli@...il.com>
Cc:	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	"David S. Miller" <davem@...emloft.net>,
	Network Development <netdev@...r.kernel.org>,
	linux-samsung-soc@...r.kernel.org,
	Byungho An <bh74.an@...sung.com>, Kukjin Kim <kgene@...nel.org>
Subject: Re: [PATCH 2/2] net: stmmac: add fixed_phy and phy_addr support using
 DT file

On Fri, Jan 23, 2015 at 12:15 PM, Florian Fainelli <f.fainelli@...il.com> wrote:
> Le 22/01/2015 18:41, Ming Lei a écrit :
>> From: Byungho An <bh74.an@...sung.com>
>>
>> This patch adds codes for DT file support, fixed_phy and phy_addr
>> can be set in DT file.
>>
>> Signed-off-by: Byungho An <bh74.an@...sung.com> (bypass check for
>> fixed phy) Signed-off-by: Ming Lei<ming.lei@...onical.com> ---
>> drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |    5 ++++-
>> .../net/ethernet/stmicro/stmmac/stmmac_platform.c  |    7 +++++++ 2
>> files changed, 11 insertions(+), 1 deletion(-)
>>
>> diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
>> b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c index
>> 8c6b7c16..ddb4351 100644 ---
>> a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c +++
>> b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c @@ -847,8
>> +847,11 @@ static int stmmac_init_phy(struct net_device *dev) * 0
>> rather than 0xffff. Catch this here and treat 0 as a non-existent *
>> device as well. * Note: phydev->phy_id is the result of reading the
>> UID PHY registers. +   * But phy_id returned from fixed phy is
>> always zero, so bypass the +   * check for fixed phy. */ -    if
>> (phydev->phy_id == 0) { +     if (phydev->phy_id == 0 &&
>> (!priv->plat->phy_bus_name || +
>> strcmp(priv->plat->phy_bus_name,"fixed"))) {
>> phy_disconnect(phydev); return -ENODEV; } diff --git
>> a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
>> b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index
>> 879e29f..4f11491 100644 ---
>> a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c +++
>> b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c @@ -128,6
>> +128,7 @@ static int stmmac_probe_config_dt(struct platform_device
>> *pdev, struct device_node *np = pdev->dev.of_node; struct
>> stmmac_dma_cfg *dma_cfg; const struct of_device_id *device; + u32
>> phy_addr;
>>
>> if (!np) return -ENODEV; @@ -217,6 +218,12 @@ static int
>> stmmac_probe_config_dt(struct platform_device *pdev, plat->pmt =
>> 1; }
>>
>> +     if (of_find_property(np, "fixed_phy", NULL)) { +
>> plat->phy_bus_name = "fixed"; +               of_property_read_u32(np,
>> "phy_addr", &phy_addr); +             plat->phy_addr = phy_addr; +    }
>
> Humm, same here, it would look like you could use the existing Device
> Tree helpers for parsing and registering a fixed PHY here, provided
> that you use the proper binding though.

OK, I will try to use the existing DT helpers in v1.

>
> BTW, Ming Lei's email is bouncing, do we have an updated email he
> could be contacted with?

Sorry, my signed-off-by email in the 1st patch is wrong(typo), and
the address in this email and patch is correct.

Thanks,
Ming Lei
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