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Message-Id: <1401958387-8154-2-git-send-email-alexander.stein@systec-electronic.com>
Date: Thu, 5 Jun 2014 10:53:03 +0200
From: Alexander Stein <alexander.stein@...tec-electronic.com>
To: "David S. Miller" <davem@...emloft.net>
Cc: Alexander Stein <alexander.stein@...tec-electronic.com>,
netdev@...r.kernel.org,
Daniel Krueger <daniel.krueger@...tec-electronic.com>
Subject: [PATCH v2 2/6] pch_gbe: Add module parameter for RGMII/GMII PHY mode selection
The mode register has to be set even in GMII mode. Otherwise the 125 MHz
RXCLK is not detected after MAC reset.
Signed-off-by: Daniel Krueger <daniel.krueger@...tec-electronic.com>
Signed-off-by: Alexander Stein <alexander.stein@...tec-electronic.com>
---
drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h | 1 +
.../net/ethernet/oki-semi/pch_gbe/pch_gbe_api.c | 6 +--
.../net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c | 47 ++++++++++++----------
.../net/ethernet/oki-semi/pch_gbe/pch_gbe_phy.h | 1 -
4 files changed, 30 insertions(+), 25 deletions(-)
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h
index 2a55d6d..956dc68 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe.h
@@ -390,6 +390,7 @@ struct pch_gbe_phy_info {
u32 revision;
u32 reset_delay_us;
u16 autoneg_advertised;
+ bool is_rgmii;
};
/*!
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_api.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_api.c
index 5125036..c97e738 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_api.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_api.c
@@ -77,9 +77,9 @@ static s32 pch_gbe_plat_init_hw(struct pch_gbe_hw *hw)
}
pch_gbe_phy_init_setting(hw);
/* Setup Mac interface option RGMII */
-#ifdef PCH_GBE_MAC_IFOP_RGMII
- pch_gbe_phy_set_rgmii(hw);
-#endif
+ if (hw->phy.is_rgmii)
+ pch_gbe_phy_set_rgmii(hw);
+
return ret_val;
}
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
index cf3101c..e7acbd7 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_main.c
@@ -114,6 +114,7 @@ const char pch_driver_version[] = DRV_VERSION;
#define MINNOW_PHY_RESET_GPIO 13
static unsigned int copybreak __read_mostly = PCH_GBE_COPYBREAK_DEFAULT;
+static bool is_rgmii __read_mostly = 1;
static int pch_gbe_mdio_read(struct net_device *netdev, int addr, int reg);
static void pch_gbe_mdio_write(struct net_device *netdev, int addr, int reg,
@@ -369,9 +370,7 @@ static void pch_gbe_mac_reset_hw(struct pch_gbe_hw *hw)
/* Read the MAC address. and store to the private data */
pch_gbe_mac_read_mac_addr(hw);
iowrite32(PCH_GBE_ALL_RST, &hw->reg->RESET);
-#ifdef PCH_GBE_MAC_IFOP_RGMII
iowrite32(PCH_GBE_MODE_GMII_ETHER, &hw->reg->MODE);
-#endif
pch_gbe_wait_clr_bit(&hw->reg->RESET, PCH_GBE_ALL_RST);
/* Setup the receive addresses */
pch_gbe_mac_mar_set(hw, hw->mac.addr, 0);
@@ -1039,26 +1038,26 @@ static void pch_gbe_set_rgmii_ctrl(struct pch_gbe_adapter *adapter, u16 speed,
unsigned long rgmii = 0;
/* Set the RGMII control. */
-#ifdef PCH_GBE_MAC_IFOP_RGMII
- switch (speed) {
- case SPEED_10:
- rgmii = (PCH_GBE_RGMII_RATE_2_5M |
- PCH_GBE_MAC_RGMII_CTRL_SETTING);
- break;
- case SPEED_100:
- rgmii = (PCH_GBE_RGMII_RATE_25M |
- PCH_GBE_MAC_RGMII_CTRL_SETTING);
- break;
- case SPEED_1000:
- rgmii = (PCH_GBE_RGMII_RATE_125M |
- PCH_GBE_MAC_RGMII_CTRL_SETTING);
- break;
- }
- iowrite32(rgmii, &hw->reg->RGMII_CTRL);
-#else /* GMII */
- rgmii = 0;
+ if (hw->phy.is_rgmii) {
+ switch (speed) {
+ case SPEED_10:
+ rgmii = (PCH_GBE_RGMII_RATE_2_5M |
+ PCH_GBE_MAC_RGMII_CTRL_SETTING);
+ break;
+ case SPEED_100:
+ rgmii = (PCH_GBE_RGMII_RATE_25M |
+ PCH_GBE_MAC_RGMII_CTRL_SETTING);
+ break;
+ case SPEED_1000:
+ rgmii = (PCH_GBE_RGMII_RATE_125M |
+ PCH_GBE_MAC_RGMII_CTRL_SETTING);
+ break;
+ }
+ } else
+ /* GMII */
+ rgmii = 0;
+
iowrite32(rgmii, &hw->reg->RGMII_CTRL);
-#endif
}
static void pch_gbe_set_mode(struct pch_gbe_adapter *adapter, u16 speed,
u16 duplex)
@@ -2629,6 +2628,8 @@ static int pch_gbe_probe(struct pci_dev *pdev,
if (adapter->pdata && adapter->pdata->platform_init)
adapter->pdata->platform_init(pdev);
+ adapter->hw.phy.is_rgmii = is_rgmii;
+
adapter->ptp_pdev = pci_get_bus_and_slot(adapter->pdev->bus->number,
PCI_DEVFN(12, 4));
@@ -2841,4 +2842,8 @@ module_param(copybreak, uint, 0644);
MODULE_PARM_DESC(copybreak,
"Maximum size of packet that is copied to a new buffer on receive");
+module_param(is_rgmii, bool, 0644);
+MODULE_PARM_DESC(is_rgmii,
+ "Selection of RGMII/GMII PHY mode. true: RGMII (default). false: GMII");
+
/* pch_gbe_main.c */
diff --git a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_phy.h b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_phy.h
index 95ad015..1c1e711 100644
--- a/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_phy.h
+++ b/drivers/net/ethernet/oki-semi/pch_gbe/pch_gbe_phy.h
@@ -21,7 +21,6 @@
#define PCH_GBE_PHY_REGS_LEN 32
#define PCH_GBE_PHY_RESET_DELAY_US 10
-#define PCH_GBE_MAC_IFOP_RGMII
s32 pch_gbe_phy_get_id(struct pch_gbe_hw *hw);
s32 pch_gbe_phy_read_reg_miic(struct pch_gbe_hw *hw, u32 offset, u16 *data);
--
1.8.5.5
--
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