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Date:   Mon, 13 Apr 2020 13:26:11 +0000
From:   <Yuiko.Oshino@...rochip.com>
To:     <kuba@...nel.org>, <atsushi.nemoto@...d.co.jp>
CC:     <netdev@...r.kernel.org>, <tomonori.sakita@...d.co.jp>,
        <UNGLinuxDriver@...rochip.com>
Subject: RE: [PATCH] net: phy: micrel: use genphy_read_status for KSZ9131

>From: Yuiko Oshino - C18177
>Sent: Friday, April 10, 2020 2:41 PM
>To: 'Jakub Kicinski' <kuba@...nel.org>; 'Atsushi Nemoto'
><atsushi.nemoto@...d.co.jp>
>Cc: 'netdev@...r.kernel.org' <netdev@...r.kernel.org>;
>'tomonori.sakita@...d.co.jp' <tomonori.sakita@...d.co.jp>
>Subject: RE: [PATCH] net: phy: micrel: use genphy_read_status for KSZ9131
>
>>From: Jakub Kicinski <kuba@...nel.org>
>>Sent: Friday, April 10, 2020 2:00 PM
>>To: Atsushi Nemoto <atsushi.nemoto@...d.co.jp>
>>Cc: netdev@...r.kernel.org; Yuiko Oshino - C18177
>><Yuiko.Oshino@...rochip.com>; tomonori.sakita@...d.co.jp
>>Subject: Re: [PATCH] net: phy: micrel: use genphy_read_status for
>>KSZ9131
>>
>>EXTERNAL EMAIL: Do not click links or open attachments unless you know
>>the content is safe
>>
>>On Fri, 10 Apr 2020 12:16:16 +0900 (JST) Atsushi Nemoto wrote:
>>> KSZ9131 will not work with some switches due to workaround for
>>> KSZ9031 introduced in commit d2fd719bcb0e83cb39cfee22ee800f98a56eceb3
>>> ("net/phy: micrel: Add workaround for bad autoneg").
>>> Use genphy_read_status instead of dedicated ksz9031_read_status.
>>
>>That commit older than support for KSZ9131 itself, right?
>>If so we should blame this one:
>>
>>Fixes: bff5b4b37372 ("net: phy: micrel: add Microchip KSZ9131 initial
>>driver")
>>
>>Yuiko, does this change look good to you?
>
>Let me check with my team and get back to you.
>- Yuiko

Hi Jakub and Nemoto-san,

The KSZ9031 workaround is not necessary for KSZ9131.
Please apply the new patch.

Thank you.
Yuiko

>>
>>> Signed-off-by: Atsushi Nemoto <atsushi.nemoto@...d.co.jp>
>>> ---
>>>  drivers/net/phy/micrel.c | 2 +-
>>>  1 file changed, 1 insertion(+), 1 deletion(-)
>>>
>>> diff --git a/drivers/net/phy/micrel.c b/drivers/net/phy/micrel.c
>>> index 05d20343b816..3a4d83fa52dc 100644
>>> --- a/drivers/net/phy/micrel.c
>>> +++ b/drivers/net/phy/micrel.c
>>> @@ -1204,7 +1204,7 @@ static struct phy_driver ksphy_driver[] = {
>>>       .driver_data    = &ksz9021_type,
>>>       .probe          = kszphy_probe,
>>>       .config_init    = ksz9131_config_init,
>>> -     .read_status    = ksz9031_read_status,
>>> +     .read_status    = genphy_read_status,
>>>       .ack_interrupt  = kszphy_ack_interrupt,
>>>       .config_intr    = kszphy_config_intr,
>>>       .get_sset_count = kszphy_get_sset_count,

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