diff options
| author | Michal Simek <michal.simek@xilinx.com> | 2020-02-18 13:51:02 +0100 |
|---|---|---|
| committer | Joe Hershberger <joe.hershberger@ni.com> | 2020-03-09 18:11:25 -0500 |
| commit | a7844953acc9711f71bc864f69f922e87ff2ee9f (patch) | |
| tree | fdb38bfc8df38069bb49b0e662da5c045af3ac7f /drivers/net/phy | |
| parent | 9f312b3d05b5f6f37e3521f5998fd00b4da2a77d (diff) | |
net: phy: dp83867: Add SGMII mode type switching
This patch adds ability to switch beetween two PHY SGMII modes.
Some hardware, for example, FPGA IP designs may use 6-wire mode
which enables differential SGMII clock to MAC.
Patch description, dt flags have been done in mainline Linux by
commit a2111c460c0c ("net: phy: dp83867: Add documentation for SGMII mode type")
and by commit 507ddd5c0d47 ("net: phy: dp83867: Add SGMII mode type switching")
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Diffstat (limited to 'drivers/net/phy')
| -rw-r--r-- | drivers/net/phy/dp83867.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/net/phy/dp83867.c b/drivers/net/phy/dp83867.c index 0098997c0cd..50804c130ef 100644 --- a/drivers/net/phy/dp83867.c +++ b/drivers/net/phy/dp83867.c @@ -29,6 +29,7 @@ #define DP83867_STRAP_STS2 0x006f #define DP83867_RGMIIDCTL 0x0086 #define DP83867_IO_MUX_CFG 0x0170 +#define DP83867_SGMIICTL 0x00D3 #define DP83867_SW_RESET BIT(15) #define DP83867_SW_RESTART BIT(14) @@ -101,6 +102,9 @@ /* CFG4 bits */ #define DP83867_CFG4_PORT_MIRROR_EN BIT(0) +/* SGMIICTL bits */ +#define DP83867_SGMII_TYPE BIT(14) + enum { DP83867_PORT_MIRRORING_KEEP, DP83867_PORT_MIRRORING_EN, @@ -116,6 +120,7 @@ struct dp83867_private { int port_mirroring; bool set_clk_output; unsigned int clk_output_sel; + bool sgmii_ref_clk_en; }; static int dp83867_config_port_mirroring(struct phy_device *phydev) @@ -236,6 +241,9 @@ static int dp83867_of_init(struct phy_device *phydev) if (ofnode_read_bool(node, "enet-phy-lane-no-swap")) dp83867->port_mirroring = DP83867_PORT_MIRRORING_DIS; + if (ofnode_read_bool(node, "ti,sgmii-ref-clock-output-enable")) + dp83867->sgmii_ref_clk_en = true; + return 0; } #else @@ -331,6 +339,10 @@ static int dp83867_config(struct phy_device *phydev) } if (phy_interface_is_sgmii(phydev)) { + if (dp83867->sgmii_ref_clk_en) + phy_write_mmd(phydev, DP83867_DEVADDR, DP83867_SGMIICTL, + DP83867_SGMII_TYPE); + phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, (BMCR_ANENABLE | BMCR_FULLDPLX | BMCR_SPEED1000)); |