From e5c6340f42a9430ca55e49a0d935c59eddb5fbe4 Mon Sep 17 00:00:00 2001 From: Alexander Shiyan Date: Sat, 2 Jul 2016 07:59:47 +0300 Subject: net: smc911x: Add parsing devicetree options This patch adds parsing basic devicetree options for the smc911x driver: reg-io-width, reg-shift and smsc,force-(in/ex)ternal-phy, which makes driver usable for most DTS-based boards. Signed-off-by: Alexander Shiyan Signed-off-by: Sascha Hauer --- drivers/net/smc911x.c | 17 +++++++++++++++-- 1 file changed, 15 insertions(+), 2 deletions(-) (limited to 'drivers/net') diff --git a/drivers/net/smc911x.c b/drivers/net/smc911x.c index fe9d1df502..45175bb32b 100644 --- a/drivers/net/smc911x.c +++ b/drivers/net/smc911x.c @@ -38,7 +38,7 @@ struct smc911x_priv { struct mii_bus miibus; void __iomem *base; - int shift; + u32 shift; int generation; unsigned int flags; unsigned int idrev; @@ -516,6 +516,19 @@ static int smc911x_probe(struct device_d *dev) priv->shift = pdata->shift; priv->flags = pdata->flags; priv->phy_mask = pdata->phy_mask; + } else if (IS_ENABLED(CONFIG_OFDEVICE) && dev->device_node) { + ret = of_property_read_u32(dev->device_node, "reg-io-width", &val); + if (ret) + return ret; + is_32bit = (val == 4); + + of_property_read_u32(dev->device_node, "reg-shift", &priv->shift); + + if (of_property_read_bool(dev->device_node, "smsc,force-internal-phy")) + priv->flags |= SMC911X_FORCE_INTERNAL_PHY; + + if (of_property_read_bool(dev->device_node, "smsc,force-external-phy")) + priv->flags |= SMC911X_FORCE_EXTERNAL_PHY; } if (is_32bit) { @@ -562,7 +575,7 @@ static int smc911x_probe(struct device_d *dev) if (val != 0x87654321) { dev_err(dev, "no smc911x found on 0x%p (byte_test=0x%08x)\n", priv->base, val); - if (((val >> 16) & 0xFFFF) == (val & 0xFFFF)) { + if ((((val >> 16) & 0xFFFF) == (val & 0xFFFF)) && is_32bit) { /* * This may mean the chip is set * for 32 bit while the bus is reading 16 bit -- cgit v1.2.3