openwrt/target/linux/bcm63xx/patches-4.19/408-bcm63xx_enet-enable-rgmii-clock-on-external-ports.patch

From d8237d704fc25eb2fc25ef4403608b78c6a6d4be Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
Date: Sun, 15 Jul 2012 20:08:57 +0200
Subject: [PATCH 54/81] bcm63xx_enet: enable rgmii clock on external ports

---
 arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h |   13 +++++++++++++
 drivers/net/ethernet/broadcom/bcm63xx_enet.c      |   12 ++++++++++++
 2 files changed, 25 insertions(+), 0 deletions(-)

--- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
+++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_regs.h
@@ -968,6 +968,19 @@
 #define ENETSW_PORTOV_FDX_MASK		(1 << 1)
 #define ENETSW_PORTOV_LINKUP_MASK	(1 << 0)
 
+/* Port RGMII control register */
+#define ENETSW_RGMII_CTRL_REG(x)	(0x60 + (x))
+#define ENETSW_RGMII_CTRL_GMII_CLK_EN	(1 << 7)
+#define ENETSW_RGMII_CTRL_MII_OVERRIDE_EN (1 << 6)
+#define ENETSW_RGMII_CTRL_MII_MODE_MASK	(3 << 4)
+#define ENETSW_RGMII_CTRL_RGMII_MODE	(0 << 4)
+#define ENETSW_RGMII_CTRL_MII_MODE	(1 << 4)
+#define ENETSW_RGMII_CTRL_RVMII_MODE	(2 << 4)
+#define ENETSW_RGMII_CTRL_TIMING_SEL_EN	(1 << 0)
+
+/* Port RGMII timing register */
+#define ENETSW_RGMII_TIMING_REG(x)	(0x68 + (x))
+
 /* MDIO control register */
 #define ENETSW_MDIOC_REG		(0xb0)
 #define ENETSW_MDIOC_EXT_MASK		(1 << 16)
--- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
+++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
@@ -2185,6 +2185,18 @@ static int bcm_enetsw_open(struct net_de
 		priv->sw_port_link[i] = 0;
 	}
 
+	/* enable external ports */
+	for (i = ENETSW_RGMII_PORT0; i < priv->num_ports; i++) {
+		u8 rgmii_ctrl;
+
+		if (!priv->used_ports[i].used)
+			continue;
+
+		rgmii_ctrl = enetsw_readb(priv, ENETSW_RGMII_CTRL_REG(i));
+		rgmii_ctrl |= ENETSW_RGMII_CTRL_GMII_CLK_EN;
+		enetsw_writeb(priv, rgmii_ctrl, ENETSW_RGMII_CTRL_REG(i));
+	}
+
 	/* reset mib */
 	val = enetsw_readb(priv, ENETSW_GMCR_REG);
 	val |= ENETSW_GMCR_RST_MIB_MASK;