[RFC/PATCH 08/18] ravb: Add mii_rgmii_selection to struct ravb_hw_info
From: Biju Das <biju.das.jz@bp.renesas.com>
Date: 2021-09-23 14:08:48
Also in:
linux-renesas-soc
Subsystem:
networking drivers, renesas ethernet avb driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Niklas Söderlund, Linus Torvalds
E-MAC on RZ/G2L supports MII/RGMII selection. Add a mii_rgmii_selection feature bit to struct ravb_hw_info to support this for RZ/G2L. Currently only selecting RGMII is supported. Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com> --- drivers/net/ethernet/renesas/ravb.h | 17 +++++++++++++++++ drivers/net/ethernet/renesas/ravb_main.c | 6 ++++++ 2 files changed, 23 insertions(+)
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index bce480fadb91..dfaf3121da44 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h@@ -189,6 +189,8 @@ enum ravb_reg { PIR = 0x0520, PSR = 0x0528, PIPR = 0x052c, + CXR31 = 0x0530, /* Documented for RZ/G2L only */ + CXR35 = 0x0540, /* Documented for RZ/G2L only */ MPR = 0x0558, PFTCR = 0x055c, PFRCR = 0x0560,
@@ -951,6 +953,20 @@ enum RAVB_QUEUE { RAVB_NC, /* Network Control Queue */ }; +enum CXR31_BIT { + CXR31_SEL_LINK0 = 0x00000001, + CXR31_SEL_LINK1 = 0x00000008, +}; + +enum CXR35_BIT { + CXR35_SEL_MODIN = 0x00000100, +}; + +enum CSR0_BIT { + CSR0_TPE = 0x00000010, + CSR0_RPE = 0x00000020, +}; + #define DBAT_ENTRY_NUM 22 #define RX_QUEUE_OFFSET 4 #define NUM_RX_QUEUE 2
@@ -1008,6 +1024,7 @@ struct ravb_hw_info { unsigned ccc_gac:1; /* AVB-DMAC has gPTP support active in config mode */ unsigned multi_tsrq:1; /* AVB-DMAC has MULTI TSRQ */ unsigned magic_pkt:1; /* E-MAC supports magic packet detection */ + unsigned mii_rgmii_selection:1; /* E-MAC supports mii/rgmii selection */ }; struct ravb_private {
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index 529364d8f7fb..5d18681582b9 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c@@ -1128,6 +1128,7 @@ static int ravb_phy_init(struct net_device *ndev) { struct device_node *np = ndev->dev.parent->of_node; struct ravb_private *priv = netdev_priv(ndev); + const struct ravb_hw_info *info = priv->info; struct phy_device *phydev; struct device_node *pn; phy_interface_t iface;
@@ -1173,6 +1174,10 @@ static int ravb_phy_init(struct net_device *ndev) netdev_info(ndev, "limited PHY to 100Mbit/s\n"); } + if (info->mii_rgmii_selection && + priv->phy_interface == PHY_INTERFACE_MODE_RGMII_ID) + ravb_write(ndev, ravb_read(ndev, CXR35) | CXR35_SEL_MODIN, CXR35); + /* 10BASE, Pause and Asym Pause is not supported */ phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Half_BIT); phy_remove_link_mode(phydev, ETHTOOL_LINK_MODE_10baseT_Full_BIT);
@@ -2132,6 +2137,7 @@ static const struct ravb_hw_info rgeth_hw_info = { .aligned_tx = 1, .tx_counters = 1, .no_gptp = 1, + .mii_rgmii_selection = 1, }; static const struct of_device_id ravb_match_table[] = {
--
2.17.1