diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/747-v5.16-08-net-dsa-qca8k-add-explicit-SGMII-PLL-enable.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/747-v5.16-08-net-dsa-qca8k-add-explicit-SGMII-PLL-enable.patch | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/747-v5.16-08-net-dsa-qca8k-add-explicit-SGMII-PLL-enable.patch b/pkgs/patches-linux-5.15/747-v5.16-08-net-dsa-qca8k-add-explicit-SGMII-PLL-enable.patch new file mode 100644 index 0000000..2b5a84a --- /dev/null +++ b/pkgs/patches-linux-5.15/747-v5.16-08-net-dsa-qca8k-add-explicit-SGMII-PLL-enable.patch @@ -0,0 +1,65 @@ +From bbc4799e8bb6c397e3b3fec13de68e179f5db9ff Mon Sep 17 00:00:00 2001 +From: Ansuel Smith <ansuelsmth@gmail.com> +Date: Thu, 14 Oct 2021 00:39:13 +0200 +Subject: net: dsa: qca8k: add explicit SGMII PLL enable + +Support enabling PLL on the SGMII CPU port. Some device require this +special configuration or no traffic is transmitted and the switch +doesn't work at all. A dedicated binding is added to the CPU node +port to apply the correct reg on mac config. +Fail to correctly configure sgmii with qca8327 switch and warn if pll is +used on qca8337 with a revision greater than 1. + +Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/dsa/qca8k.c | 19 +++++++++++++++++-- + drivers/net/dsa/qca8k.h | 1 + + 2 files changed, 18 insertions(+), 2 deletions(-) + +--- a/drivers/net/dsa/qca8k.c ++++ b/drivers/net/dsa/qca8k.c +@@ -1002,6 +1002,18 @@ qca8k_parse_port_config(struct qca8k_pri + if (of_property_read_bool(port_dn, "qca,sgmii-rxclk-falling-edge")) + priv->sgmii_rx_clk_falling_edge = true; + ++ if (of_property_read_bool(port_dn, "qca,sgmii-enable-pll")) { ++ priv->sgmii_enable_pll = true; ++ ++ if (priv->switch_id == QCA8K_ID_QCA8327) { ++ dev_err(priv->dev, "SGMII PLL should NOT be enabled for qca8327. Aborting enabling"); ++ priv->sgmii_enable_pll = false; ++ } ++ ++ if (priv->switch_revision < 2) ++ dev_warn(priv->dev, "SGMII PLL should NOT be enabled for qca8337 with revision 2 or more."); ++ } ++ + break; + default: + continue; +@@ -1312,8 +1324,11 @@ qca8k_phylink_mac_config(struct dsa_swit + if (ret) + return; + +- val |= QCA8K_SGMII_EN_PLL | QCA8K_SGMII_EN_RX | +- QCA8K_SGMII_EN_TX | QCA8K_SGMII_EN_SD; ++ val |= QCA8K_SGMII_EN_SD; ++ ++ if (priv->sgmii_enable_pll) ++ val |= QCA8K_SGMII_EN_PLL | QCA8K_SGMII_EN_RX | ++ QCA8K_SGMII_EN_TX; + + if (dsa_is_cpu_port(ds, port)) { + /* CPU port, we're talking to the CPU MAC, be a PHY */ +--- a/drivers/net/dsa/qca8k.h ++++ b/drivers/net/dsa/qca8k.h +@@ -266,6 +266,7 @@ struct qca8k_priv { + u8 switch_revision; + bool sgmii_rx_clk_falling_edge; + bool sgmii_tx_clk_falling_edge; ++ bool sgmii_enable_pll; + u8 rgmii_rx_delay[QCA8K_NUM_CPU_PORTS]; /* 0: CPU port0, 1: CPU port6 */ + u8 rgmii_tx_delay[QCA8K_NUM_CPU_PORTS]; /* 0: CPU port0, 1: CPU port6 */ + bool legacy_phy_port_mapping; |