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Thu, 31 Jul 2025 01:33:43 -0700 (PDT) Message-ID: <100aa0d2-68b6-466d-95e6-0acfb259cf12@tuxon.dev> Date: Thu, 31 Jul 2025 11:33:41 +0300 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2 4/5] net: cadence: macb: sama7g5_emac: Remove USARIO CLKEN flag To: Ryan Wanner , andrew+netdev@lunn.ch, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, Nicolas.Ferre@microchip.com, alexandre.belloni@bootlin.com Cc: netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org References: <1e7a8c324526f631f279925aa8a6aa937d55c796.1752510727.git.Ryan.Wanner@microchip.com> <848529cc-0d01-4012-ae87-8a98b1307cbe@microchip.com> <681b063c-6eab-459b-a714-1967a735c37d@tuxon.dev> <76e7b9fc-e0e2-4d21-ba5a-dac831522bb2@microchip.com> From: Claudiu Beznea Content-Language: en-US In-Reply-To: <76e7b9fc-e0e2-4d21-ba5a-dac831522bb2@microchip.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit On 29.07.2025 18:51, Ryan Wanner wrote: > On 7/26/25 05:56, claudiu beznea wrote: >> EXTERNAL EMAIL: Do not click links or open attachments unless you know >> the content is safe >> >> Hi, Ryan, >> >> On 7/21/25 18:39, Ryan.Wanner@microchip.com wrote: >>> On 7/18/25 04:00, Claudiu Beznea wrote: >>>> EXTERNAL EMAIL: Do not click links or open attachments unless you >>>> know the content is safe >>>> >>>> Hi, Ryan, >>>> >>>> On 14.07.2025 19:37, Ryan.Wanner@microchip.com wrote: >>>>> From: Ryan Wanner >>>>> >>>>> Remove USARIO_CLKEN flag since this is now a device tree argument and >>>> >>>> s/USARIO_CLKEN/USRIO_HAS_CLKEN here and in title as well. >>>> >>>>> not fixed to the SoC. >>>>> >>>>> This will instead be selected by the "cdns,refclk-ext" >>>>> device tree property. >>>>> >>>>> Signed-off-by: Ryan Wanner >>>>> --- >>>>>   drivers/net/ethernet/cadence/macb_main.c | 3 +-- >>>>>   1 file changed, 1 insertion(+), 2 deletions(-) >>>>> >>>>> diff --git a/drivers/net/ethernet/cadence/macb_main.c b/drivers/net/ >>>>> ethernet/cadence/macb_main.c >>>>> index 51667263c01d..cd54e4065690 100644 >>>>> --- a/drivers/net/ethernet/cadence/macb_main.c >>>>> +++ b/drivers/net/ethernet/cadence/macb_main.c >>>>> @@ -5113,8 +5113,7 @@ static const struct macb_config >>>>> sama7g5_gem_config = { >>>>> >>>>>   static const struct macb_config sama7g5_emac_config = { >>>>>        .caps = MACB_CAPS_USRIO_DEFAULT_IS_MII_GMII | >>>>> -             MACB_CAPS_USRIO_HAS_CLKEN | MACB_CAPS_MIIONRGMII | >>>> >>>> Will old DTBs still work with new kernels with this change? >>> >>> That was my assumption, but it seems it would be safer to keep this >>> property for this IP and implement this dt flag property on IPs that do >>> not already have  MACB_CAPS_USRIO_HAS_CLKEN property. >> >> So, this patch should be reverted, right? > > Yes you are right, more testing I see that this could break older DTs. I > am new to reverting patches, do I send a patch to revert this and would > it be an issue now? Not sure about the approach now! Looks like this has already been merged https://lore.kernel.org/all/20250727013451.2436467-1-kuba@kernel.org/ Thank you, Claudiu > > Ryan >> >> Thank you, >> Claudiu >> >>> >>> Ryan >>>> >>>> Thank you, >>>> Claudiu >>>> >>>>> -             MACB_CAPS_GEM_HAS_PTP, >>>>> +             MACB_CAPS_MIIONRGMII | MACB_CAPS_GEM_HAS_PTP, >>>>>        .dma_burst_length = 16, >>>>>        .clk_init = macb_clk_init, >>>>>        .init = macb_init, >>>> >>> >> >