[U-Boot] [PATCH v8 1/7] drivers: net: cpsw: Add reading of DT phy-handle node
Add the ability to read the phy-handle node of the cpsw slave. Upon reading this handle the phy-id can be stored based on the reg node in the DT.
The phy-handle also needs to be stored and passed to the phy to access any phy data that is available.
Signed-off-by: Dan Murphy dmurphy@ti.com Tested-by: Mugunthan V N mugunthanvnm@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com ---
v8 - Add acked/Tested/reviewed by information v7 - Fixed checkpatch issues - https://patchwork.ozlabs.org/patch/610946/ Checkpatch LTL issues still remain and resolving will break readability
WARNING: line over 80 characters #47: FILE: drivers/net/cpsw.c:1230: WARNING: line over 80 characters #50: FILE: drivers/net/cpsw.c:1233:
drivers/net/cpsw.c | 23 +++++++++++++++++++++-- include/cpsw.h | 1 + 2 files changed, 22 insertions(+), 2 deletions(-)
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c index 7104754..a2d9527 100644 --- a/drivers/net/cpsw.c +++ b/drivers/net/cpsw.c @@ -965,6 +965,11 @@ static int cpsw_phy_init(struct cpsw_priv *priv, struct cpsw_slave *slave) phydev->supported &= supported; phydev->advertising = phydev->supported;
+#ifdef CONFIG_DM_ETH + if (slave->data->phy_of_handle) + phydev->dev->of_offset = slave->data->phy_of_handle; +#endif + priv->phydev = phydev; phy_config(phydev);
@@ -1217,8 +1222,22 @@ static int cpsw_eth_ofdata_to_platdata(struct udevice *dev) if (phy_mode) priv->data.slave_data[slave_index].phy_if = phy_get_interface_by_name(phy_mode); - fdtdec_get_int_array(fdt, subnode, "phy_id", phy_id, 2); - priv->data.slave_data[slave_index].phy_addr = phy_id[1]; + + priv->data.slave_data[slave_index].phy_of_handle = + fdtdec_lookup_phandle(fdt, subnode, + "phy-handle"); + + if (priv->data.slave_data[slave_index].phy_of_handle >= 0) { + priv->data.slave_data[slave_index].phy_addr = + fdtdec_get_int(gd->fdt_blob, + priv->data.slave_data[slave_index].phy_of_handle, + "reg", -1); + } else { + fdtdec_get_int_array(fdt, subnode, "phy_id", + phy_id, 2); + priv->data.slave_data[slave_index].phy_addr = + phy_id[1]; + } slave_index++; }
diff --git a/include/cpsw.h b/include/cpsw.h index cf1d30b..ff95cd8 100644 --- a/include/cpsw.h +++ b/include/cpsw.h @@ -21,6 +21,7 @@ struct cpsw_slave_data { u32 sliver_reg_ofs; int phy_addr; int phy_if; + int phy_of_handle; };
enum {
Add the ability to pass the phy-handle node offset to the phy driver. This allows the phy driver to access the DT subnode's data and parse accordingly.
Signed-off-by: Dan Murphy dmurphy@ti.com Tested-by: Michal Simek michal.simek@xilinx.com Acked-by: Joe Hershberger joe.hershberger@ni.com ---
v8 - Add acked/Tested/reviewed by information v7 - no changes from v6
drivers/net/zynq_gem.c | 15 ++++++++++----- 1 file changed, 10 insertions(+), 5 deletions(-)
diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c index aec8077..f9b22c4 100644 --- a/drivers/net/zynq_gem.c +++ b/drivers/net/zynq_gem.c @@ -179,6 +179,7 @@ struct zynq_gem_priv { struct zynq_gem_regs *iobase; phy_interface_t interface; struct phy_device *phydev; + int phy_of_handle; struct mii_dev *bus; };
@@ -352,6 +353,10 @@ static int zynq_phy_init(struct udevice *dev) priv->phydev->supported = supported | ADVERTISED_Pause | ADVERTISED_Asym_Pause; priv->phydev->advertising = priv->phydev->supported; + + if (priv->phy_of_handle > 0) + priv->phydev->dev->of_offset = priv->phy_of_handle; + phy_config(priv->phydev);
return 0; @@ -675,7 +680,6 @@ static int zynq_gem_ofdata_to_platdata(struct udevice *dev) { struct eth_pdata *pdata = dev_get_platdata(dev); struct zynq_gem_priv *priv = dev_get_priv(dev); - int offset = 0; const char *phy_mode;
pdata->iobase = (phys_addr_t)dev_get_addr(dev); @@ -684,10 +688,11 @@ static int zynq_gem_ofdata_to_platdata(struct udevice *dev) priv->emio = 0; priv->phyaddr = -1;
- offset = fdtdec_lookup_phandle(gd->fdt_blob, dev->of_offset, - "phy-handle"); - if (offset > 0) - priv->phyaddr = fdtdec_get_int(gd->fdt_blob, offset, "reg", -1); + priv->phy_of_handle = fdtdec_lookup_phandle(gd->fdt_blob, + dev->of_offset, "phy-handle"); + if (priv->phy_of_handle > 0) + priv->phyaddr = fdtdec_get_int(gd->fdt_blob, + priv->phy_of_handle, "reg", -1);
phy_mode = fdt_getprop(gd->fdt_blob, dev->of_offset, "phy-mode", NULL); if (phy_mode)
Add the device tree bindings and the accompanying documentation for the TI DP83867 Giga bit ethernet phy driver.
The original document was from: [commit 2a10154abcb75ad0d7b6bfea6210ac743ec60897 from the Linux kernel]
Signed-off-by: Dan Murphy dmurphy@ti.com Reviewed-by: Mugunthan V N mugunthanvnm@ti.com Tested-by: Mugunthan V N mugunthanvnm@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com ---
v8 - Add acked/Tested/reviewed by information v7 - no changes from v6
doc/device-tree-bindings/net/ti,dp83867.txt | 25 +++++++++++++++++++++ include/dt-bindings/net/ti-dp83867.h | 35 +++++++++++++++++++++++++++++ 2 files changed, 60 insertions(+) create mode 100644 doc/device-tree-bindings/net/ti,dp83867.txt create mode 100644 include/dt-bindings/net/ti-dp83867.h
diff --git a/doc/device-tree-bindings/net/ti,dp83867.txt b/doc/device-tree-bindings/net/ti,dp83867.txt new file mode 100644 index 0000000..cb77fdf --- /dev/null +++ b/doc/device-tree-bindings/net/ti,dp83867.txt @@ -0,0 +1,25 @@ +* Texas Instruments - dp83867 Giga bit ethernet phy + +Required properties: + - reg - The ID number for the phy, usually a small integer + - ti,rx-internal-delay - RGMII Recieve Clock Delay - see dt-bindings/net/ti-dp83867.h + for applicable values + - ti,tx-internal-delay - RGMII Transmit Clock Delay - see dt-bindings/net/ti-dp83867.h + for applicable values + - ti,fifo-depth - Transmitt FIFO depth- 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 + +Example: + + ethernet-phy@0 { + reg = <0>; + ti,rx-internal-delay = <DP83867_RGMIIDCTL_2_25_NS>; + ti,tx-internal-delay = <DP83867_RGMIIDCTL_2_75_NS>; + ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_4_B_NIB>; + }; + +Datasheet can be found: +http://www.ti.com/product/DP83867IR/datasheet diff --git a/include/dt-bindings/net/ti-dp83867.h b/include/dt-bindings/net/ti-dp83867.h new file mode 100644 index 0000000..1843757 --- /dev/null +++ b/include/dt-bindings/net/ti-dp83867.h @@ -0,0 +1,35 @@ +/* + * TI DP83867 PHY drivers + * + * SPDX-License-Identifier: GPL-2.0 + * + */ + +#ifndef _DT_BINDINGS_TI_DP83867_H +#define _DT_BINDINGS_TI_DP83867_H + +/* PHY CTRL bits */ +#define DP83867_PHYCR_FIFO_DEPTH_3_B_NIB 0x00 +#define DP83867_PHYCR_FIFO_DEPTH_4_B_NIB 0x01 +#define DP83867_PHYCR_FIFO_DEPTH_6_B_NIB 0x02 +#define DP83867_PHYCR_FIFO_DEPTH_8_B_NIB 0x03 + +/* RGMIIDCTL internal delay for rx and tx */ +#define DP83867_RGMIIDCTL_250_PS 0x0 +#define DP83867_RGMIIDCTL_500_PS 0x1 +#define DP83867_RGMIIDCTL_750_PS 0x2 +#define DP83867_RGMIIDCTL_1_NS 0x3 +#define DP83867_RGMIIDCTL_1_25_NS 0x4 +#define DP83867_RGMIIDCTL_1_50_NS 0x5 +#define DP83867_RGMIIDCTL_1_75_NS 0x6 +#define DP83867_RGMIIDCTL_2_00_NS 0x7 +#define DP83867_RGMIIDCTL_2_25_NS 0x8 +#define DP83867_RGMIIDCTL_2_50_NS 0x9 +#define DP83867_RGMIIDCTL_2_75_NS 0xa +#define DP83867_RGMIIDCTL_3_00_NS 0xb +#define DP83867_RGMIIDCTL_3_25_NS 0xc +#define DP83867_RGMIIDCTL_3_50_NS 0xd +#define DP83867_RGMIIDCTL_3_75_NS 0xe +#define DP83867_RGMIIDCTL_4_00_NS 0xf + +#endif
Not all devices use the same internal delay or fifo depth. Add the ability to set the internal delay for rx or tx and the fifo depth via the devicetree. If the value is not set in the devicetree then set the delay to the default.
If devicetree is not used then use the default defines within the driver.
Signed-off-by: Dan Murphy dmurphy@ti.com Tested-by: Mugunthan V N mugunthanvnm@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com ---
v8 - Add acked/Tested/reviewed by information v7 - Fixed checkpatch issues - https://patchwork.ozlabs.org/patch/610950/ Checkpatch LTL issues still remain and resolving will break readability
WARNING: line over 80 characters #127: FILE: drivers/net/phy/ti.c:232: WARNING: line over 80 characters #140: FILE: drivers/net/phy/ti.c:255: WARNING: line over 80 characters #141: FILE: drivers/net/phy/ti.c:256: WARNING: line over 80 characters #152: FILE: drivers/net/phy/ti.c:279:
drivers/net/phy/ti.c | 87 ++++++++++++++++++++++++++++++++++++++++++++++------ 1 file changed, 77 insertions(+), 10 deletions(-)
diff --git a/drivers/net/phy/ti.c b/drivers/net/phy/ti.c index 937426b..4c4f0c1 100644 --- a/drivers/net/phy/ti.c +++ b/drivers/net/phy/ti.c @@ -6,6 +6,14 @@ */ #include <common.h> #include <phy.h> +#include <linux/compat.h> +#include <malloc.h> + +#include <fdtdec.h> +#include <dm.h> +#include <dt-bindings/net/ti-dp83867.h> + +DECLARE_GLOBAL_DATA_PTR;
/* TI DP83867 */ #define DP83867_DEVADDR 0x1f @@ -71,6 +79,17 @@ #define MII_MMD_CTRL_INCR_RDWT 0x8000 /* post increment on reads & writes */ #define MII_MMD_CTRL_INCR_ON_WT 0xC000 /* post increment on writes only */
+/* User setting - can be taken from DTS */ +#define DEFAULT_RX_ID_DELAY DP83867_RGMIIDCTL_2_25_NS +#define DEFAULT_TX_ID_DELAY DP83867_RGMIIDCTL_2_75_NS +#define DEFAULT_FIFO_DEPTH DP83867_PHYCR_FIFO_DEPTH_4_B_NIB + +struct dp83867_private { + int rx_id_delay; + int tx_id_delay; + int fifo_depth; +}; + /** * phy_read_mmd_indirect - reads data from the MMD registers * @phydev: The PHY device bus @@ -148,16 +167,60 @@ static inline bool phy_interface_is_rgmii(struct phy_device *phydev) phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID; }
-/* User setting - can be taken from DTS */ -#define RX_ID_DELAY 8 -#define TX_ID_DELAY 0xa -#define FIFO_DEPTH 1 +#if defined(CONFIG_DM_ETH) +/** + * dp83867_data_init - Convenience function for setting PHY specific data + * + * @phydev: the phy_device struct + */ +static int dp83867_of_init(struct phy_device *phydev) +{ + struct dp83867_private *dp83867 = phydev->priv; + struct udevice *dev = phydev->dev; + + dp83867->rx_id_delay = fdtdec_get_uint(gd->fdt_blob, dev->of_offset, + "ti,rx-internal-delay", -1); + + dp83867->tx_id_delay = fdtdec_get_uint(gd->fdt_blob, dev->of_offset, + "ti,tx-internal-delay", -1); + + dp83867->fifo_depth = fdtdec_get_uint(gd->fdt_blob, dev->of_offset, + "ti,fifo-depth", -1); + + return 0; +} +#else +static int dp83867_of_init(struct phy_device *phydev) +{ + struct dp83867_private *dp83867 = phydev->priv; + + dp83867->rx_id_delay = DEFAULT_RX_ID_DELAY; + dp83867->tx_id_delay = DEFAULT_TX_ID_DELAY; + dp83867->fifo_depth = DEFAULT_FIFO_DEPTH; + + return 0; +} +#endif
static int dp83867_config(struct phy_device *phydev) { + struct dp83867_private *dp83867; unsigned int val, delay, cfg2; int ret;
+ if (!phydev->priv) { + dp83867 = kzalloc(sizeof(*dp83867), GFP_KERNEL); + if (!dp83867) + return -ENOMEM; + + phydev->priv = dp83867; + ret = dp83867_of_init(phydev); + if (ret) + goto err_out; + } else { + dp83867 = (struct dp83867_private *)phydev->priv; + } + /* Restart the PHY. */ val = phy_read(phydev, MDIO_DEVAD_NONE, DP83867_CTRL); phy_write(phydev, MDIO_DEVAD_NONE, DP83867_CTRL, @@ -166,9 +229,9 @@ static int dp83867_config(struct phy_device *phydev) if (phy_interface_is_rgmii(phydev)) { ret = phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_PHYCTRL, (DP83867_MDI_CROSSOVER_AUTO << DP83867_MDI_CROSSOVER) | - (FIFO_DEPTH << DP83867_PHYCR_FIFO_DEPTH_SHIFT)); + (dp83867->fifo_depth << DP83867_PHYCR_FIFO_DEPTH_SHIFT)); if (ret) - return ret; + goto err_out; } else { phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, (BMCR_ANENABLE | BMCR_FULLDPLX | BMCR_SPEED1000)); @@ -189,8 +252,8 @@ static int dp83867_config(struct phy_device *phydev) DP83867_PHYCTRL_SGMIIEN | (DP83867_MDI_CROSSOVER_MDIX << DP83867_MDI_CROSSOVER) | - (FIFO_DEPTH << DP83867_PHYCTRL_RXFIFO_SHIFT) | - (FIFO_DEPTH << DP83867_PHYCTRL_TXFIFO_SHIFT)); + (dp83867->fifo_depth << DP83867_PHYCTRL_RXFIFO_SHIFT) | + (dp83867->fifo_depth << DP83867_PHYCTRL_TXFIFO_SHIFT)); phy_write(phydev, MDIO_DEVAD_NONE, MII_DP83867_BISCR, 0x0); }
@@ -212,8 +275,8 @@ static int dp83867_config(struct phy_device *phydev) phy_write_mmd_indirect(phydev, DP83867_RGMIICTL, DP83867_DEVADDR, phydev->addr, val);
- delay = (RX_ID_DELAY | - (TX_ID_DELAY << DP83867_RGMII_TX_CLK_DELAY_SHIFT)); + delay = (dp83867->rx_id_delay | + (dp83867->tx_id_delay << DP83867_RGMII_TX_CLK_DELAY_SHIFT));
phy_write_mmd_indirect(phydev, DP83867_RGMIIDCTL, DP83867_DEVADDR, phydev->addr, delay); @@ -221,6 +284,10 @@ static int dp83867_config(struct phy_device *phydev)
genphy_config_aneg(phydev); return 0; + +err_out: + kfree(dp83867); + return ret; }
static struct phy_driver DP83867_driver = {
Move the phy_interface_is_rgmii to the phy.h file for all phy's to be able to use the API.
This now aligns with the Linux kernel based on commit e463d88c36d42211aa72ed76d32fb8bf37820ef1
Signed-off-by: Dan Murphy dmurphy@ti.com Reviewed-by: Mugunthan V N mugunthanvnm@ti.com Reviewed-by: Michal Simek michal.simek@xilinx.com Tested-by: Mugunthan V N mugunthanvnm@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com --- v8 - Add acked/Tested/reviewed by information v7 - no changes from v6
drivers/net/phy/ti.c | 11 ----------- include/phy.h | 11 +++++++++++ 2 files changed, 11 insertions(+), 11 deletions(-)
diff --git a/drivers/net/phy/ti.c b/drivers/net/phy/ti.c index 4c4f0c1..4c19353 100644 --- a/drivers/net/phy/ti.c +++ b/drivers/net/phy/ti.c @@ -156,17 +156,6 @@ void phy_write_mmd_indirect(struct phy_device *phydev, int prtad, phy_write(phydev, addr, MII_MMD_DATA, data); }
-/** - * phy_interface_is_rgmii - Convenience function for testing if a PHY interface - * is RGMII (all variants) - * @phydev: the phy_device struct - */ -static inline bool phy_interface_is_rgmii(struct phy_device *phydev) -{ - return phydev->interface >= PHY_INTERFACE_MODE_RGMII && - phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID; -} - #if defined(CONFIG_DM_ETH) /** * dp83867_data_init - Convenience function for setting PHY specific data diff --git a/include/phy.h b/include/phy.h index 21459a8..7b2d1ff 100644 --- a/include/phy.h +++ b/include/phy.h @@ -277,6 +277,17 @@ int get_phy_id(struct mii_dev *bus, int addr, int devad, u32 *phy_id); */ int phy_get_interface_by_name(const char *str);
+/** + * phy_interface_is_rgmii - Convenience function for testing if a PHY interface + * is RGMII (all variants) + * @phydev: the phy_device struct + */ +static inline bool phy_interface_is_rgmii(struct phy_device *phydev) +{ + return phydev->interface >= PHY_INTERFACE_MODE_RGMII && + phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID; +} + /* PHY UIDs for various PHYs that are referenced in external code */ #define PHY_UID_CS4340 0x13e51002 #define PHY_UID_TN2020 0x00a19410
Add a helper to phy.h to identify whether the phy is configured for SGMII all variables.
Signed-off-by: Dan Murphy dmurphy@ti.com Reviewed-by: Mugunthan V N mugunthanvnm@ti.com Reviewed-by: Michal Simek michal.simek@xilinx.com Tested-by: Mugunthan V N mugunthanvnm@ti.com Acked-by: Joe Hershberger joe.hershberger@ni.com ---
v8 - Add acked/Tested/reviewed by information v7 - no changes from v6
include/phy.h | 11 +++++++++++ 1 file changed, 11 insertions(+)
diff --git a/include/phy.h b/include/phy.h index 7b2d1ff..ef3eb51 100644 --- a/include/phy.h +++ b/include/phy.h @@ -288,6 +288,17 @@ static inline bool phy_interface_is_rgmii(struct phy_device *phydev) phydev->interface <= PHY_INTERFACE_MODE_RGMII_TXID; }
+/** + * phy_interface_is_sgmii - Convenience function for testing if a PHY interface + * is SGMII (all variants) + * @phydev: the phy_device struct + */ +static inline bool phy_interface_is_sgmii(struct phy_device *phydev) +{ + return phydev->interface >= PHY_INTERFACE_MODE_SGMII && + phydev->interface <= PHY_INTERFACE_MODE_QSGMII; +} + /* PHY UIDs for various PHYs that are referenced in external code */ #define PHY_UID_CS4340 0x13e51002 #define PHY_UID_TN2020 0x00a19410
The code assumed that if the interface is not RGMII configured then it must be SGMII configured. This device has the ability to support most of the MII interfaces. Therefore add the helper for SGMII and only configure the device if the interface is configured for SGMII.
Signed-off-by: Dan Murphy dmurphy@ti.com Reviewed-by: Mugunthan V N mugunthanvnm@ti.com Reviewed-by: Michal Simek michal.simek@xilinx.com Acked-by: Joe Hershberger joe.hershberger@ni.com ---
v8 - Add acked/Tested/reviewed by information v7 - no changes from v6
drivers/net/phy/ti.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/net/phy/ti.c b/drivers/net/phy/ti.c index 4c19353..c55dd97 100644 --- a/drivers/net/phy/ti.c +++ b/drivers/net/phy/ti.c @@ -221,7 +221,7 @@ static int dp83867_config(struct phy_device *phydev) (dp83867->fifo_depth << DP83867_PHYCR_FIFO_DEPTH_SHIFT)); if (ret) goto err_out; - } else { + } else if (phy_interface_is_sgmii(phydev)) { phy_write(phydev, MDIO_DEVAD_NONE, MII_BMCR, (BMCR_ANENABLE | BMCR_FULLDPLX | BMCR_SPEED1000));
participants (2)
-
Dan Murphy -
Joe Hershberger