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Fri, 13 Nov 2026 03:05:54 -0800 (PST) Received: from NB-6746.corp.yadro.com ([188.243.183.76]) by smtp.gmail.com with ESMTPSA id 2adb3069b0e04-5c17133371asm610997e87.21.2026.11.13.03.05.53 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 13 Nov 2026 03:05:54 -0800 (PST) From: Artem Shimko To: andrew@lunn.ch, hkallweit1@gmail.com, linux@armlinux.org.uk, davem@davemloft.net, edumazet@google.com, kuba@kernel.org, pabeni@redhat.com, robh@kernel.org, krzk+dt@kernel.org, conor+dt@kernel.org, maxime.chevallier@bootlin.com, pavel@ucw.cz, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, linux-leds@vger.kernel.org Cc: Artem Shimko , netdev@vger.kernel.org Subject: [PATCH net-next 2/3] net: phy: dap8211r: add extended register write helper Date: Fri, 13 Nov 2026 14:05:44 +0300 Message-ID: <20261113110546.173624-3-a.shimko.dev@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20261113110546.173624-1-a.shimko.dev@gmail.com> References: <20261113110546.173624-1-a.shimko.dev@gmail.com> X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add dap8211r_write_ext() to write extended registers via the indirect access registers of the phy. This will be used to write extended registers of the dap8211r. No functional change. Signed-off-by: Artem Shimko --- drivers/net/phy/dap8211r.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/net/phy/dap8211r.c b/drivers/net/phy/dap8211r.c index 0bf770f8ebbb..4eb50c26397f 100644 --- a/drivers/net/phy/dap8211r.c +++ b/drivers/net/phy/dap8211r.c @@ -88,6 +88,32 @@ static int dap8211r_read_ext(struct phy_device *phydev, u16 reg) return ret; } +/** + * dap8211r_write_ext() - Write extended register + * @phydev: PHY device structure + * @reg: Extended register address + * @data: Data to write + * + * Writes a PHY extended register using the indirect access method. + * The caller must hold the MDIO bus lock. + * + * Return: 0 on success, or negative error code + */ +static int dap8211r_write_ext(struct phy_device *phydev, u16 reg, u16 data) +{ + int ret; + + phy_lock_mdio_bus(phydev); + ret = __phy_write(phydev, DAP8211R_EXT_ADD, reg); + if (ret < 0) + goto out; + + ret = __phy_write(phydev, DAP8211R_EXT_DATA, data); +out: + phy_unlock_mdio_bus(phydev); + return ret; +} + /** * dap8211r_modify_ext() - Modify extended register bits * @phydev: PHY device structure -- 2.43.0