[PATCH v2 4/4] net: dsa: b53: add BCM63268 RGMII configuration

Álvaro Fernández Rojas
2023-03-21T17:35:17Z

BCM63268 requires special RGMII configuration to work.

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
---
v2: no changes.

drivers/net/dsa/b53/b53_common.c | 6 +++++-
drivers/net/dsa/b53/b53_regs.h | 1 +
2 files changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/net/dsa/b53/b53_common.c b/drivers/net/dsa/b53/b53_common.c
index 97327d7a6760..1f9b251a5452 100644
--- a/drivers/net/dsa/b53/b53_common.c
+++ b/drivers/net/dsa/b53/b53_common.c
@@ -1240,8 +1240,12 @@ static void b53_adjust_63xx_rgmii(struct dsa_switch *ds, int port,
break;
}

- if (port != dev->imp_port)
+ if (port != dev->imp_port) {
+ if (is63268(dev))
+ rgmii_ctrl |= RGMII_CTRL_MII_OVERRIDE;
+
rgmii_ctrl |= RGMII_CTRL_ENABLE_GMII;
+ }

b53_write8(dev, B53_CTRL_PAGE, off, rgmii_ctrl);

diff --git a/drivers/net/dsa/b53/b53_regs.h b/drivers/net/dsa/b53/b53_regs.h
index b2c539a42154..bfbcb66bef66 100644
--- a/drivers/net/dsa/b53/b53_regs.h
+++ b/drivers/net/dsa/b53/b53_regs.h
@@ -138,6 +138,7 @@

#define B53_RGMII_CTRL_IMP 0x60
#define RGMII_CTRL_ENABLE_GMII BIT(7)
+#define RGMII_CTRL_MII_OVERRIDE BIT(6)
#define RGMII_CTRL_TIMING_SEL BIT(2)
#define RGMII_CTRL_DLL_RXC BIT(1)
#define RGMII_CTRL_DLL_TXC BIT(0)
--
2.30.2