linux-kernel - Re: [PATCH AUTOSEL 5.2 17/42] MIPS: lantiq: update the clock alias' for the mainline PCIe PHY driver

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Date:   Sat, 5 Oct 2019 19:00:36 -0400
From:   Sasha Levin <sashal@...nel.org>
To:     Hauke Mehrtens <hauke@...ke-m.de>
Cc:     linux-kernel@...r.kernel.org, stable@...r.kernel.org,
        Martin Blumenstingl <martin.blumenstingl@...glemail.com>,
        Paul Burton <paul.burton@...s.com>, linux-mips@...r.kernel.org,
        devicetree@...r.kernel.org, john@...ozen.org, kishon@...com,
        ralf@...ux-mips.org, robh+dt@...nel.org, mark.rutland@....com,
        ms@....tdt.de
Subject: Re: [PATCH AUTOSEL 5.2 17/42] MIPS: lantiq: update the clock alias'
 for the mainline PCIe PHY driver

On Sun, Sep 29, 2019 at 07:39:49PM +0200, Hauke Mehrtens wrote:
>On 9/29/19 7:32 PM, Sasha Levin wrote:
>> From: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
>>
>> [ Upstream commit ed90302be64a53d9031c8ce05428c358b16a5d96 ]
>>
>> The mainline PCIe PHY driver has it's own devicetree node. Update the
>> clock alias so the mainline driver finds the clocks.
>>
>> The first PCIe PHY is located at 0x1f106800 and exists on VRX200, ARX300
>> and GRX390.
>> The second PCIe PHY is located at 0x1f700400 and exists on ARX300 and
>> GRX390.
>> The third PCIe PHY is located at 0x1f106a00 and exists onl on GRX390.
>> Lantiq's board support package (called "UGW") names these registers
>> "PDI".
>>
>> Signed-off-by: Martin Blumenstingl <martin.blumenstingl@...glemail.com>
>> Signed-off-by: Paul Burton <paul.burton@...s.com>
>> Cc: linux-mips@...r.kernel.org
>> Cc: devicetree@...r.kernel.org
>> Cc: john@...ozen.org
>> Cc: kishon@...com
>> Cc: ralf@...ux-mips.org
>> Cc: robh+dt@...nel.org
>> Cc: linux-kernel@...r.kernel.org
>> Cc: hauke@...ke-m.de
>> Cc: mark.rutland@....com
>> Cc: ms@....tdt.de
>> Signed-off-by: Sasha Levin <sashal@...nel.org>
>> ---
>>  arch/mips/lantiq/xway/sysctrl.c | 16 ++++++++--------
>>  1 file changed, 8 insertions(+), 8 deletions(-)
>
>Hi Sasha,
>
>This change only makes sense with the new upstream PCIe phy driver which
>was added to kernel 5.4 [0], older kernel versions do not have this PCIe
>PHY driver. I would not backport these changes to older kernel versions.

I'll drop it, thank you!

-- 
Thanks,
Sasha