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Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Russell King Cc: noltari@gmail.com, jonas.gorski@gmail.com, Kyle Hendry , Florian Fainelli , netdev@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH net-next v2 4/7] net: dsa: b53: mmap: Add syscon reference and register layout for bcm63268 Date: Wed, 23 Jul 2025 20:52:43 -0700 Message-ID: <20250724035300.20497-5-kylehendrydev@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250724035300.20497-1-kylehendrydev@gmail.com> References: <20250724035300.20497-1-kylehendrydev@gmail.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" On bcm63xx SoCs there are registers that control the PHYs in the GPIO controller. Allow the b53 driver to access them by passing in the syscon through the device tree. Add a structure to describe the ephy control register and add register info for bcm63268. Signed-off-by: Kyle Hendry Reviewed-by: Florian Fainelli --- drivers/net/dsa/b53/b53_mmap.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/net/dsa/b53/b53_mmap.c b/drivers/net/dsa/b53/b53_mmap.c index f97556c6ca2a..35bf39ab2771 100644 --- a/drivers/net/dsa/b53/b53_mmap.c +++ b/drivers/net/dsa/b53/b53_mmap.c @@ -21,13 +21,32 @@ #include #include #include +#include #include #include =20 #include "b53_priv.h" =20 +struct b53_phy_info { + u32 ephy_enable_mask; + u32 ephy_port_mask; + u32 ephy_bias_bit; + const u32 *ephy_offset; +}; + struct b53_mmap_priv { void __iomem *regs; + struct regmap *gpio_ctrl; + const struct b53_phy_info *phy_info; +}; + +static const u32 bcm63268_ephy_offsets[] =3D {4, 9, 14}; + +static const struct b53_phy_info bcm63268_ephy_info =3D { + .ephy_enable_mask =3D GENMASK(4, 0), + .ephy_port_mask =3D GENMASK((ARRAY_SIZE(bcm63268_ephy_offsets) - 1), 0), + .ephy_bias_bit =3D 24, + .ephy_offset =3D bcm63268_ephy_offsets, }; =20 static int b53_mmap_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val) @@ -313,6 +332,12 @@ static int b53_mmap_probe(struct platform_device *pdev) =20 priv->regs =3D pdata->regs; =20 + priv->gpio_ctrl =3D syscon_regmap_lookup_by_phandle(np, "brcm,gpio-ctrl"); + if (!IS_ERR(priv->gpio_ctrl)) { + if (pdata->chip_id =3D=3D BCM63268_DEVICE_ID) + priv->phy_info =3D &bcm63268_ephy_info; + } + dev =3D b53_switch_alloc(&pdev->dev, &b53_mmap_ops, priv); if (!dev) return -ENOMEM; --=20 2.43.0