diff options
| author | Detlev Casanova <detlev.casanova@collabora.com> | 2023-06-05 17:40:08 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-06-07 10:52:24 +0200 |
| commit | 7300c9b574cc2b259ef112d34affa0671ae4810a (patch) | |
| tree | 61bb31abdb6ede0d86f598d8e7e53a67b3d7dea1 | |
| parent | hv_netvsc: Allocate rx indirection table size dynamically (diff) | |
| download | linux-7300c9b574cc2b259ef112d34affa0671ae4810a.tar.xz linux-7300c9b574cc2b259ef112d34affa0671ae4810a.zip | |
net: phy: realtek: Add optional external PHY clock
In some cases, the PHY can use an external clock source instead of a
crystal.
Add an optional clock in the phy node to make sure that the clock source
is enabled, if specified, before probing.
Reviewed-by: Florian Fainelli <florian.fainelli@broadcom.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Detlev Casanova <detlev.casanova@collabora.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/phy/realtek.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/phy/realtek.c b/drivers/net/phy/realtek.c index 3d99fd6664d7..b13dd0b3c99e 100644 --- a/drivers/net/phy/realtek.c +++ b/drivers/net/phy/realtek.c @@ -12,6 +12,7 @@ #include <linux/phy.h> #include <linux/module.h> #include <linux/delay.h> +#include <linux/clk.h> #define RTL821x_PHYSR 0x11 #define RTL821x_PHYSR_DUPLEX BIT(13) @@ -80,6 +81,7 @@ struct rtl821x_priv { u16 phycr1; u16 phycr2; bool has_phycr2; + struct clk *clk; }; static int rtl821x_read_page(struct phy_device *phydev) @@ -103,6 +105,11 @@ static int rtl821x_probe(struct phy_device *phydev) if (!priv) return -ENOMEM; + priv->clk = devm_clk_get_optional_enabled(dev, NULL); + if (IS_ERR(priv->clk)) + return dev_err_probe(dev, PTR_ERR(priv->clk), + "failed to get phy clock\n"); + ret = phy_read_paged(phydev, 0xa43, RTL8211F_PHYCR1); if (ret < 0) return ret; |