[PATCH 2/4] net: dsa: b53: mmap: Add gphy control register as a resource
From: Kyle Hendry <hidden>
Date: 2025-02-06 04:31:32
Also in:
lkml
Subsystem:
broadcom b53/sf2 ethernet switch driver, networking drivers, networking [dsa], the rest · Maintainers:
Florian Fainelli, Jonas Gorski, Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Vladimir Oltean, Linus Torvalds
Give b53 driver access to the gphy control register by passing it in as an optional second reg in the device tree. Signed-off-by: Kyle Hendry <redacted> --- drivers/net/dsa/b53/b53_mmap.c | 8 +++++++- include/linux/platform_data/b53.h | 1 + 2 files changed, 8 insertions(+), 1 deletion(-)
diff --git a/drivers/net/dsa/b53/b53_mmap.c b/drivers/net/dsa/b53/b53_mmap.c
index c687360a5b7f..8157f9871133 100644
--- a/drivers/net/dsa/b53/b53_mmap.c
+++ b/drivers/net/dsa/b53/b53_mmap.c@@ -28,6 +28,7 @@ struct b53_mmap_priv { void __iomem *regs; + void __iomem *gphy_ctrl; }; static int b53_mmap_read8(struct b53_device *dev, u8 page, u8 reg, u8 *val)
@@ -251,7 +252,7 @@ static int b53_mmap_probe_of(struct platform_device *pdev, struct device_node *of_ports, *of_port; struct device *dev = &pdev->dev; struct b53_platform_data *pdata; - void __iomem *mem; + void __iomem *mem, *gphy_ctrl; mem = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(mem))
@@ -266,6 +267,10 @@ static int b53_mmap_probe_of(struct platform_device *pdev, pdata->chip_id = (u32)(unsigned long)device_get_match_data(dev); pdata->big_endian = of_property_read_bool(np, "big-endian"); + gphy_ctrl = devm_platform_ioremap_resource(pdev, 1); + if (!IS_ERR(gphy_ctrl)) + pdata->gphy_ctrl = gphy_ctrl; + of_ports = of_get_child_by_name(np, "ports"); if (!of_ports) { dev_err(dev, "no ports child node found\n");
@@ -312,6 +317,7 @@ static int b53_mmap_probe(struct platform_device *pdev) return -ENOMEM; priv->regs = pdata->regs; + priv->gphy_ctrl = pdata->gphy_ctrl; dev = b53_switch_alloc(&pdev->dev, &b53_mmap_ops, priv); if (!dev)
diff --git a/include/linux/platform_data/b53.h b/include/linux/platform_data/b53.h
index 6f6fed2b171d..ed73287e8ac5 100644
--- a/include/linux/platform_data/b53.h
+++ b/include/linux/platform_data/b53.h@@ -32,6 +32,7 @@ struct b53_platform_data { /* only used by MMAP'd driver */ unsigned big_endian:1; void __iomem *regs; + void __iomem *gphy_ctrl; }; #endif
--
2.43.0