From: Biju Das <biju.das.jz@bp.renesas.com>
To: "David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: Biju Das <biju.das.jz@bp.renesas.com>,
Sergey Shtylyov <s.shtylyov@omp.ru>,
Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>,
netdev@vger.kernel.org, linux-renesas-soc@vger.kernel.org,
Geert Uytterhoeven <geert+renesas@glider.be>,
Chris Paterson <Chris.Paterson2@renesas.com>,
Biju Das <biju.das@bp.renesas.com>
Subject: [PATCH net-next v5] ravb: Add RZ/G2L MII interface support
Date: Wed, 14 Sep 2022 20:26:04 +0100 [thread overview]
Message-ID: <20220914192604.265859-1-biju.das.jz@bp.renesas.com> (raw)
EMAC IP found on RZ/G2L Gb ethernet supports MII interface.
This patch adds support for selecting MII interface mode.
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v4->v5:
* Reorderd enum CXR35_BIT from LSB to MSB
v3->v4:
* Dropped CXR35_HALFCYC_CLKSW1000 enum
* Added CXR35_HALFCYC_CLKSW, CXR35_SEL_XMII and CXR35_SEL_XMII_RGMII
enum.
v2->v3:
* Documented CXR35_HALFCYC_CLKSW1000 and CXR35_SEL_XMII_MII enum.
v1->v2:
* Fixed spaces->Tab around CXR35 description.
---
drivers/net/ethernet/renesas/ravb.h | 8 ++++++++
drivers/net/ethernet/renesas/ravb_main.c | 8 +++++++-
2 files changed, 15 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/renesas/ravb.h b/drivers/net/ethernet/renesas/ravb.h
index b980bce763d3..e0f8276cffed 100644
--- a/drivers/net/ethernet/renesas/ravb.h
+++ b/drivers/net/ethernet/renesas/ravb.h
@@ -189,6 +189,7 @@ enum ravb_reg {
PSR = 0x0528,
PIPR = 0x052c,
CXR31 = 0x0530, /* RZ/G2L only */
+ CXR35 = 0x0540, /* RZ/G2L only */
MPR = 0x0558,
PFTCR = 0x055c,
PFRCR = 0x0560,
@@ -965,6 +966,13 @@ enum CXR31_BIT {
CXR31_SEL_LINK1 = 0x00000008,
};
+enum CXR35_BIT {
+ CXR35_SEL_XMII = 0x00000003,
+ CXR35_SEL_XMII_RGMII = 0x00000000,
+ CXR35_SEL_XMII_MII = 0x00000002,
+ CXR35_HALFCYC_CLKSW = 0xffff0000,
+};
+
enum CSR0_BIT {
CSR0_TPE = 0x00000010,
CSR0_RPE = 0x00000020,
diff --git a/drivers/net/ethernet/renesas/ravb_main.c b/drivers/net/ethernet/renesas/ravb_main.c
index b357ac4c56c5..421c8ff1ce1f 100644
--- a/drivers/net/ethernet/renesas/ravb_main.c
+++ b/drivers/net/ethernet/renesas/ravb_main.c
@@ -540,7 +540,13 @@ static void ravb_emac_init_gbeth(struct net_device *ndev)
/* E-MAC interrupt enable register */
ravb_write(ndev, ECSIPR_ICDIP, ECSIPR);
- ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1, CXR31_SEL_LINK0);
+ if (priv->phy_interface == PHY_INTERFACE_MODE_MII) {
+ ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1, 0);
+ ravb_write(ndev, (1000 << 16) | CXR35_SEL_XMII_MII, CXR35);
+ } else {
+ ravb_modify(ndev, CXR31, CXR31_SEL_LINK0 | CXR31_SEL_LINK1,
+ CXR31_SEL_LINK0);
+ }
}
static void ravb_emac_init_rcar(struct net_device *ndev)
--
2.25.1
next reply other threads:[~2022-09-14 19:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-14 19:26 Biju Das [this message]
2022-09-15 16:14 ` [PATCH net-next v5] ravb: Add RZ/G2L MII interface support Sergey Shtylyov
2022-09-20 15:50 ` patchwork-bot+netdevbpf
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