diff options
| author | Janine Hagemann <j.hagemann@phytec.de> | 2018-08-28 08:25:39 +0200 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2018-10-10 12:28:54 -0500 |
| commit | 0f347a0096ad0c1e56d1b18b7eb60731d40d49c2 (patch) | |
| tree | a017c3bd38fb9918370d780e4103c288a7d7740a /drivers/net/phy/ti.c | |
| parent | be71a74c59b7f34e83f3f6ea4b1a838de356c654 (diff) | |
net: phy: ti: Add binding for the CLK_OUT pin muxing
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.
Based on commit 9708fb630d19 ("net: phy: dp83867: Add binding for
the CLK_OUT pin muxing option") of mainline linux kernel.
Signed-off-by: Janine Hagemann <j.hagemann@phytec.de>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'drivers/net/phy/ti.c')
| -rw-r--r-- | drivers/net/phy/ti.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/net/phy/ti.c b/drivers/net/phy/ti.c index e27ee32bd1..6db6edd0d0 100644 --- a/drivers/net/phy/ti.c +++ b/drivers/net/phy/ti.c @@ -93,6 +93,9 @@ #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_SHIFT 8 +#define DP83867_IO_MUX_CFG_CLK_O_SEL_MASK \ + GENMASK(0x1f, DP83867_IO_MUX_CFG_CLK_O_SEL_SHIFT) /* CFG4 bits */ #define DP83867_CFG4_PORT_MIRROR_EN BIT(0) @@ -110,6 +113,7 @@ struct dp83867_private { int io_impedance; bool rxctrl_strap_quirk; int port_mirroring; + int clk_output_sel; }; /** @@ -208,6 +212,18 @@ static int dp83867_of_init(struct phy_device *phydev) { struct dp83867_private *dp83867 = phydev->priv; ofnode node; + u16 val; + + /* Optional configuration */ + + /* + * Keep the default value if ti,clk-output-sel is not set + * or to high + */ + + dp83867->clk_output_sel = + ofnode_read_u32_default(node, "ti,clk-output-sel", + DP83867_CLK_O_SEL_REF_CLK); node = phy_get_ofnode(phydev); if (!ofnode_valid(node)) @@ -239,6 +255,17 @@ static int dp83867_of_init(struct phy_device *phydev) dp83867->port_mirroring = DP83867_PORT_MIRRORING_DIS; + /* Clock output selection if muxing property is set */ + if (dp83867->clk_output_sel != DP83867_CLK_O_SEL_REF_CLK) { + val = phy_read_mmd_indirect(phydev, DP83867_IO_MUX_CFG, + DP83867_DEVADDR, phydev->addr); + 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_indirect(phydev, DP83867_IO_MUX_CFG, + DP83867_DEVADDR, phydev->addr, val); + } + return 0; } #else |