diff options
| author | Wadim Egorov <w.egorov@phytec.de> | 2018-02-14 17:07:11 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-02-14 15:33:43 -0500 |
| commit | 9708fb630d19ee51ae3aeb3a533e3010da0e8570 (patch) | |
| tree | 9880a5ca8dd4be46a8aeed9af6378d381bf8933b /drivers/net | |
| parent | 37c64cf63ba1f9c071b37a2129ae9860fd423d6c (diff) | |
| download | linux-9708fb630d19ee51ae3aeb3a533e3010da0e8570.tar.bz2 | |
net: phy: dp83867: Add binding for the CLK_OUT pin muxing option
The DP83867 has a muxing option for the CLK_OUT pin. It is possible
to set CLK_OUT for different channels.
Create a binding to select a specific clock for CLK_OUT pin.
Signed-off-by: Wadim Egorov <w.egorov@phytec.de>
Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net')
| -rw-r--r-- | drivers/net/phy/dp83867.c | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/drivers/net/phy/dp83867.c b/drivers/net/phy/dp83867.c index ab58224f897f..b3935778b19f 100644 --- a/drivers/net/phy/dp83867.c +++ b/drivers/net/phy/dp83867.c @@ -75,6 +75,8 @@ #define DP83867_IO_MUX_CFG_IO_IMPEDANCE_MAX 0x0 #define DP83867_IO_MUX_CFG_IO_IMPEDANCE_MIN 0x1f +#define DP83867_IO_MUX_CFG_CLK_O_SEL_MASK (0x1f << 8) +#define DP83867_IO_MUX_CFG_CLK_O_SEL_SHIFT 8 /* CFG4 bits */ #define DP83867_CFG4_PORT_MIRROR_EN BIT(0) @@ -92,6 +94,7 @@ struct dp83867_private { int io_impedance; int port_mirroring; bool rxctrl_strap_quirk; + int clk_output_sel; }; static int dp83867_ack_interrupt(struct phy_device *phydev) @@ -160,6 +163,14 @@ static int dp83867_of_init(struct phy_device *phydev) dp83867->io_impedance = -EINVAL; /* Optional configuration */ + ret = of_property_read_u32(of_node, "ti,clk-output-sel", + &dp83867->clk_output_sel); + if (ret || dp83867->clk_output_sel > DP83867_CLK_O_SEL_REF_CLK) + /* Keep the default value if ti,clk-output-sel is not set + * or too high + */ + dp83867->clk_output_sel = DP83867_CLK_O_SEL_REF_CLK; + if (of_property_read_bool(of_node, "ti,max-output-impedance")) dp83867->io_impedance = DP83867_IO_MUX_CFG_IO_IMPEDANCE_MAX; else if (of_property_read_bool(of_node, "ti,min-output-impedance")) @@ -295,6 +306,14 @@ static int dp83867_config_init(struct phy_device *phydev) if (dp83867->port_mirroring != DP83867_PORT_MIRROING_KEEP) dp83867_config_port_mirroring(phydev); + /* Clock output selection if muxing property is set */ + if (dp83867->clk_output_sel != DP83867_CLK_O_SEL_REF_CLK) { + val = phy_read_mmd(phydev, DP83867_DEVADDR, DP83867_IO_MUX_CFG); + val &= ~DP83867_IO_MUX_CFG_CLK_O_SEL_MASK; + val |= (dp83867->clk_output_sel << DP83867_IO_MUX_CFG_CLK_O_SEL_SHIFT); + phy_write_mmd(phydev, DP83867_DEVADDR, DP83867_IO_MUX_CFG, val); + } + return 0; } |