diff options
| -rw-r--r-- | doc/device-tree-bindings/net/ti,dp83867.txt | 3 | ||||
| -rw-r--r-- | drivers/net/phy/ti.c | 27 | ||||
| -rw-r--r-- | include/dt-bindings/net/ti-dp83867.h | 15 |
3 files changed, 45 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/net/ti,dp83867.txt b/doc/device-tree-bindings/net/ti,dp83867.txt index f31c2da902..034146f5f8 100644 --- a/doc/device-tree-bindings/net/ti,dp83867.txt +++ b/doc/device-tree-bindings/net/ti,dp83867.txt @@ -12,6 +12,8 @@ Required properties: compensate for the board being designed with the lanes swapped. - enet-phy-no-lane-swap - Indicates that PHY will disable swap of the TX/RX lanes. + - ti,clk-output-sel - Clock output select - see dt-bindings/net/ti-dp83867.h + for applicable values Default child nodes are standard Ethernet PHY device nodes as described in doc/devicetree/bindings/net/ethernet.txt @@ -24,6 +26,7 @@ Example: ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>; ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>; enet-phy-lane-no-swap; + ti,clk-output-sel = <DP83867_CLK_O_SEL_CHN_A_TCLK>; }; Datasheet can be found: 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 diff --git a/include/dt-bindings/net/ti-dp83867.h b/include/dt-bindings/net/ti-dp83867.h index b8e5df615d..85d08f6974 100644 --- a/include/dt-bindings/net/ti-dp83867.h +++ b/include/dt-bindings/net/ti-dp83867.h @@ -31,4 +31,19 @@ #define DP83867_RGMIIDCTL_3_75_NS 0xe #define DP83867_RGMIIDCTL_4_00_NS 0xf +/* IO_MUX_CFG - Clock output selection */ +#define DP83867_CLK_O_SEL_CHN_A_RCLK 0x0 +#define DP83867_CLK_O_SEL_CHN_B_RCLK 0x1 +#define DP83867_CLK_O_SEL_CHN_C_RCLK 0x2 +#define DP83867_CLK_O_SEL_CHN_D_RCLK 0x3 +#define DP83867_CLK_O_SEL_CHN_A_RCLK_DIV5 0x4 +#define DP83867_CLK_O_SEL_CHN_B_RCLK_DIV5 0x5 +#define DP83867_CLK_O_SEL_CHN_C_RCLK_DIV5 0x6 +#define DP83867_CLK_O_SEL_CHN_D_RCLK_DIV5 0x7 +#define DP83867_CLK_O_SEL_CHN_A_TCLK 0x8 +#define DP83867_CLK_O_SEL_CHN_B_TCLK 0x9 +#define DP83867_CLK_O_SEL_CHN_C_TCLK 0xA +#define DP83867_CLK_O_SEL_CHN_D_TCLK 0xB +#define DP83867_CLK_O_SEL_REF_CLK 0xC + #endif |