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[2003:ea:8f48:be00:f474:dcfc:be2f:4938]) by smtp.gmail.com with ESMTPSA id a640c23a62f3a-b6d8534d99dsm1855428866b.21.2025.10.30.14.39.27 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Thu, 30 Oct 2025 14:39:28 -0700 (PDT) Message-ID: <0285fcb0-0fb5-4f6f-823c-7b6e85e28ba3@gmail.com> Date: Thu, 30 Oct 2025 22:39:34 +0100 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Content-Language: en-US From: Heiner Kallweit Subject: [PATCH net-next 0/6] net: phy: remove fixed_phy_add and first its users To: Greg Ungerer , Geert Uytterhoeven , Hauke Mehrtens , =?UTF-8?B?UmFmYcWCIE1pxYJlY2tp?= , Thomas Bogendoerfer , Michael Chan , Wei Fang , Shenwei Wang , Clark Wang , Russell King - ARM Linux , Andrew Lunn , Andrew Lunn , Jakub Kicinski , Paolo Abeni , David Miller , Eric Dumazet Cc: linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, imx@lists.linux.dev, "netdev@vger.kernel.org" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit fixed_phy_add() has a number of problems/disadvantages: - It uses phy address 0 w/o checking whether a fixed phy with this address exists already. - A subsequent call to fixed_phy_register() would also use phy address 0, because fixed_phy_add() doesn't mark it as used. - fixed_phy_add() is used from platform code, therefore requires that fixed phy code is built-in. fixed_phy_add() has only two users - coldfire/5272, using fec - bcm47xx, using b44 So migrate fec and b44 to use fixed_phy_register_100fd(), afterwards remove usage of fixed_phy_add() from the two platforms, and eventually remove fixed_phy_add(). When I proposed helper fixed_phy_register_100fd() first, there was the question whether it's worth it, and Jakub asked to submit the full series: https://lore.kernel.org/netdev/20251021182021.15223c1e@kernel.org/ Apart from this series, there are two more places where the helper can be used to simplify the code: dsa_loop, ftgmac100 I left this for a follow-up. Heiner Kallweit (6): net: phy: fixed_phy: add helper fixed_phy_register_100fd net: fec: register a fixed phy using fixed_phy_register_100fd if needed m68k: coldfire: remove creating a fixed phy net: b44: register a fixed phy using fixed_phy_register_100fd if needed MIPS: BCM47XX: remove creating a fixed phy net: phy: fixed_phy: remove fixed_phy_add arch/m68k/coldfire/m5272.c | 15 ------- arch/mips/bcm47xx/setup.c | 7 --- drivers/net/ethernet/broadcom/Kconfig | 1 + drivers/net/ethernet/broadcom/b44.c | 37 ++++++++-------- drivers/net/ethernet/freescale/Kconfig | 1 + drivers/net/ethernet/freescale/fec_main.c | 52 +++++++++++------------ drivers/net/phy/fixed_phy.c | 18 +++++--- include/linux/phy_fixed.h | 8 +++- 8 files changed, 66 insertions(+), 73 deletions(-) -- 2.51.1