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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: [RFC PATCH net-next 4/6] net: dsa: b53: mmap: Add register layout for bcm63268 Date: Fri, 20 Jun 2025 06:41:19 -0700 Message-ID: <20250620134132.5195-5-kylehendrydev@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250620134132.5195-1-kylehendrydev@gmail.com> References: <20250620134132.5195-1-kylehendrydev@gmail.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add a structure to describe the ephy control register. Add table with single entry for bcm63268. When probing, try to match table entry with the chip_id. Signed-off-by: Kyle Hendry --- drivers/net/dsa/b53/b53_mmap.c | 32 +++++++++++++++++++++++++++++++- 1 file changed, 31 insertions(+), 1 deletion(-) diff --git a/drivers/net/dsa/b53/b53_mmap.c b/drivers/net/dsa/b53/b53_mmap.c index a0c06d703861..1bebf5b9826b 100644 --- a/drivers/net/dsa/b53/b53_mmap.c +++ b/drivers/net/dsa/b53/b53_mmap.c @@ -27,9 +27,31 @@ #include "b53_priv.h" +struct b53_phy_info { + u32 chip_id; + u32 mask; + u32 num_ephy; + 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[] = {4, 9, 14}; + +static const struct b53_phy_info bcm63xx_ephy_info[] = { + { + /* 6318 has different reg layout, + * need to distinguish it somehow + */ + .chip_id = BCM63268_DEVICE_ID, + .mask = GENMASK(4, 0), + .num_ephy = ARRAY_SIZE(bcm63268_ephy_offsets), + .ephy_offset = bcm63268_ephy_offsets, + } }; static int b53_mmap_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val) @@ -296,7 +318,7 @@ static int b53_mmap_probe(struct platform_device *pdev) struct b53_platform_data *pdata = pdev->dev.platform_data; struct b53_mmap_priv *priv; struct b53_device *dev; - int ret; + int i, ret; if (!pdata && np) { ret = b53_mmap_probe_of(pdev, &pdata); @@ -316,6 +338,14 @@ static int b53_mmap_probe(struct platform_device *pdev) priv->regs = pdata->regs; priv->gpio_ctrl = syscon_regmap_lookup_by_phandle(np, "brcm,gpio-ctrl"); + if (!IS_ERR(priv->gpio_ctrl)) { + for (i = 0; i < ARRAY_SIZE(bcm63xx_ephy_info); i++) { + if (bcm63xx_ephy_info[i].chip_id == pdata->chip_id) { + priv->phy_info = &bcm63xx_ephy_info[i]; + break; + } + } + } dev = b53_switch_alloc(&pdev->dev, &b53_mmap_ops, priv); if (!dev) -- 2.43.0