diff options
Diffstat (limited to 'target/linux/bcm4908/patches-5.4/702-net-dsa-bcm_sf2-quick-fix-for-RGMII-reg-access-on-BC.patch')
| -rw-r--r-- | target/linux/bcm4908/patches-5.4/702-net-dsa-bcm_sf2-quick-fix-for-RGMII-reg-access-on-BC.patch | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/target/linux/bcm4908/patches-5.4/702-net-dsa-bcm_sf2-quick-fix-for-RGMII-reg-access-on-BC.patch b/target/linux/bcm4908/patches-5.4/702-net-dsa-bcm_sf2-quick-fix-for-RGMII-reg-access-on-BC.patch new file mode 100644 index 0000000000..2d88cf353b --- /dev/null +++ b/target/linux/bcm4908/patches-5.4/702-net-dsa-bcm_sf2-quick-fix-for-RGMII-reg-access-on-BC.patch @@ -0,0 +1,109 @@ +From 7e2dc41c745f6d9c571919d98abed2d783fce8fb Mon Sep 17 00:00:00 2001 +From: =?UTF-8?q?Rafa=C5=82=20Mi=C5=82ecki?= <rafal@milecki.pl> +Date: Sun, 14 Mar 2021 22:43:32 +0100 +Subject: [PATCH] net: dsa: bcm_sf2: quick fix for RGMII reg access on BCM4908 +MIME-Version: 1.0 +Content-Type: text/plain; charset=UTF-8 +Content-Transfer-Encoding: 8bit + +BCM4908 has only 1 RGMII register and it's used for port 7. + +Signed-off-by: Rafał Miłecki <rafal@milecki.pl> +--- + drivers/net/dsa/bcm_sf2.c | 30 +++++++++++++++++++++++------- + drivers/net/dsa/bcm_sf2_regs.h | 1 + + 2 files changed, 24 insertions(+), 7 deletions(-) + +--- a/drivers/net/dsa/bcm_sf2.c ++++ b/drivers/net/dsa/bcm_sf2.c +@@ -543,10 +543,19 @@ static void bcm_sf2_sw_mac_config(struct + struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); + u32 id_mode_dis = 0, port_mode; + u32 reg, offset; ++ u32 rgmii_ctrl; + + if (port == core_readl(priv, CORE_IMP0_PRT_ID)) + return; + ++ if (priv->type == BCM4908_DEVICE_ID) { ++ if (port != 7) ++ return; ++ rgmii_ctrl = REG_RGMII_11_CNTRL; ++ } else { ++ rgmii_ctrl = REG_RGMII_CNTRL_P(port); ++ } ++ + if (priv->type == BCM4908_DEVICE_ID || + priv->type == BCM7445_DEVICE_ID) + offset = CORE_STS_OVERRIDE_GMIIP_PORT(port); +@@ -574,7 +583,7 @@ static void bcm_sf2_sw_mac_config(struct + /* Clear id_mode_dis bit, and the existing port mode, let + * RGMII_MODE_EN bet set by mac_link_{up,down} + */ +- reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); ++ reg = reg_readl(priv, rgmii_ctrl); + reg &= ~ID_MODE_DIS; + reg &= ~(PORT_MODE_MASK << PORT_MODE_SHIFT); + reg &= ~(RX_PAUSE_EN | TX_PAUSE_EN); +@@ -589,7 +598,7 @@ static void bcm_sf2_sw_mac_config(struct + reg |= RX_PAUSE_EN; + } + +- reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); ++ reg_writel(priv, reg, rgmii_ctrl); + + force_link: + /* Force link settings detected from the PHY */ +@@ -615,6 +624,7 @@ static void bcm_sf2_sw_mac_link_set(stru + phy_interface_t interface, bool link) + { + struct bcm_sf2_priv *priv = bcm_sf2_to_priv(ds); ++ u32 rgmii_ctrl; + u32 reg; + + if (!phy_interface_mode_is_rgmii(interface) && +@@ -622,13 +632,21 @@ static void bcm_sf2_sw_mac_link_set(stru + interface != PHY_INTERFACE_MODE_REVMII) + return; + ++ if (priv->type == BCM4908_DEVICE_ID) { ++ if (port != 7) ++ return; ++ rgmii_ctrl = REG_RGMII_11_CNTRL; ++ } else { ++ rgmii_ctrl = REG_RGMII_CNTRL_P(port); ++ } ++ + /* If the link is down, just disable the interface to conserve power */ +- reg = reg_readl(priv, REG_RGMII_CNTRL_P(port)); ++ reg = reg_readl(priv, rgmii_ctrl); + if (link) + reg |= RGMII_MODE_EN; + else + reg &= ~RGMII_MODE_EN; +- reg_writel(priv, reg, REG_RGMII_CNTRL_P(port)); ++ reg_writel(priv, reg, rgmii_ctrl); + } + + static void bcm_sf2_sw_mac_link_down(struct dsa_switch *ds, int port, +@@ -999,9 +1017,7 @@ static const u16 bcm_sf2_4908_reg_offset + [REG_PHY_REVISION] = 0x14, + [REG_SPHY_CNTRL] = 0x24, + [REG_CROSSBAR] = 0xc8, +- [REG_RGMII_0_CNTRL] = 0xe0, +- [REG_RGMII_1_CNTRL] = 0xec, +- [REG_RGMII_2_CNTRL] = 0xf8, ++ [REG_RGMII_11_CNTRL] = 0x014c, + [REG_LED_0_CNTRL] = 0x40, + [REG_LED_1_CNTRL] = 0x4c, + [REG_LED_2_CNTRL] = 0x58, +--- a/drivers/net/dsa/bcm_sf2_regs.h ++++ b/drivers/net/dsa/bcm_sf2_regs.h +@@ -21,6 +21,7 @@ enum bcm_sf2_reg_offs { + REG_RGMII_0_CNTRL, + REG_RGMII_1_CNTRL, + REG_RGMII_2_CNTRL, ++ REG_RGMII_11_CNTRL, + REG_LED_0_CNTRL, + REG_LED_1_CNTRL, + REG_LED_2_CNTRL, |