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-rw-r--r--target/linux/ramips/patches-5.10/710-at803x.patch149
1 files changed, 149 insertions, 0 deletions
diff --git a/target/linux/ramips/patches-5.10/710-at803x.patch b/target/linux/ramips/patches-5.10/710-at803x.patch
new file mode 100644
index 0000000000..2b0407d525
--- /dev/null
+++ b/target/linux/ramips/patches-5.10/710-at803x.patch
@@ -0,0 +1,149 @@
+From 924453aa9d2324e5611f8e2b71df746d8f0c79f1 Mon Sep 17 00:00:00 2001
+From: =?UTF-8?q?Ren=C3=A9=20van=20Dorst?= <opensource@vdorst.com>
+Date: Fri, 13 Nov 2020 16:11:32 +0100
+Subject: [PATCH] net: phy: at803x: add support for SFP module in
+ RGMII-to-x-base mode
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+Signed-off-by: René van Dorst <opensource@vdorst.com>
+---
+ drivers/net/phy/at803x.c | 91 ++++++++++++++++++++++++++++++++++++++++
+ 1 file changed, 91 insertions(+)
+
+--- a/drivers/net/phy/at803x.c
++++ b/drivers/net/phy/at803x.c
+@@ -20,6 +20,8 @@
+ #include <linux/regulator/driver.h>
+ #include <linux/regulator/consumer.h>
+ #include <dt-bindings/net/qca-ar803x.h>
++#include <linux/sfp.h>
++#include <linux/phylink.h>
+
+ #define AT803X_SPECIFIC_FUNCTION_CONTROL 0x10
+ #define AT803X_SFC_ASSERT_CRS BIT(11)
+@@ -83,9 +85,18 @@
+
+ #define AT803X_MODE_CFG_MASK 0x0F
+ #define AT803X_MODE_CFG_SGMII 0x01
++#define AT803X_MODE_CFG_BX1000_RGMII_50 0x02
++#define AT803X_MODE_CFG_BX1000_RGMII_75 0x03
++#define AT803X_MODE_FIBER 0x01
++#define AT803X_MODE_COPPER 0x00
+
+ #define AT803X_PSSR 0x11 /*PHY-Specific Status Register*/
+ #define AT803X_PSSR_MR_AN_COMPLETE 0x0200
++#define PSSR_LINK BIT(10)
++#define PSSR_SYNC_STATUS BIT(8)
++#define PSSR_DUPLEX BIT(13)
++#define PSSR_SPEED_1000 BIT(15)
++#define PSSR_SPEED_100 BIT(14)
+
+ #define AT803X_DEBUG_REG_0 0x00
+ #define AT803X_DEBUG_RX_CLK_DLY_EN BIT(15)
+@@ -505,10 +516,72 @@ static int at803x_parse_dt(struct phy_de
+ return 0;
+ }
+
++static int at803x_mode(struct phy_device *phydev)
++{
++ int mode;
++
++ mode = phy_read(phydev, AT803X_REG_CHIP_CONFIG) & AT803X_MODE_CFG_MASK;
++
++ if (mode == AT803X_MODE_CFG_BX1000_RGMII_50 ||
++ mode == AT803X_MODE_CFG_BX1000_RGMII_75)
++ return AT803X_MODE_FIBER;
++ return AT803X_MODE_COPPER;
++}
++
++static int at803x_sfp_insert(void *upstream, const struct sfp_eeprom_id *id)
++{
++ __ETHTOOL_DECLARE_LINK_MODE_MASK(at803x_support) = { 0, };
++ __ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, };
++ struct phy_device *phydev = upstream;
++ phy_interface_t iface;
++
++ phylink_set(at803x_support, 1000baseX_Full);
++ /* AT803x only support 1000baseX but SGMII works fine when module runs
++ * at 1Gbit.
++ */
++ phylink_set(at803x_support, 1000baseT_Full);
++
++ sfp_parse_support(phydev->sfp_bus, id, support);
++
++ // Limit to interfaces that both sides support
++ linkmode_and(support, support, at803x_support);
++
++ if (linkmode_empty(support))
++ goto unsupported_mode;
++
++ iface = sfp_select_interface(phydev->sfp_bus, support);
++
++ if (iface != PHY_INTERFACE_MODE_SGMII &&
++ iface != PHY_INTERFACE_MODE_1000BASEX)
++ goto unsupported_mode;
++
++ dev_info(&phydev->mdio.dev, "SFP interface %s", phy_modes(iface));
++
++ return 0;
++
++unsupported_mode:
++ dev_info(&phydev->mdio.dev, "incompatible SFP module inserted;"
++ "Only SGMII at 1Gbit/1000BASEX are supported!\n");
++ return -EINVAL;
++}
++
++static const struct sfp_upstream_ops at803x_sfp_ops = {
++ .attach = phy_sfp_attach,
++ .detach = phy_sfp_detach,
++ .module_insert = at803x_sfp_insert,
++};
++
+ static int at803x_probe(struct phy_device *phydev)
+ {
+ struct device *dev = &phydev->mdio.dev;
+ struct at803x_priv *priv;
++ int ret;
++
++ if (at803x_mode(phydev) == AT803X_MODE_FIBER) {
++ ret = phy_sfp_probe(phydev, &at803x_sfp_ops);
++ if (ret < 0)
++ return ret;
++ }
+
+ priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL);
+ if (!priv)
+@@ -709,6 +782,10 @@ static int at803x_read_status(struct phy
+ {
+ int ss, err, old_link = phydev->link;
+
++ /* Handle (Fiber) SGMII to RGMII mode */
++ if (at803x_mode(phydev) == AT803X_MODE_FIBER)
++ return genphy_c37_read_status(phydev);
++
+ /* Update the link, but return if there was an error */
+ err = genphy_update_link(phydev);
+ if (err)
+@@ -809,6 +886,12 @@ static int at803x_config_aneg(struct phy
+ {
+ int ret;
+
++ /* Handle (Fiber) SerDes to RGMII mode */
++ if (at803x_mode(phydev) == AT803X_MODE_FIBER) {
++ pr_warn("%s: fiber\n", __func__);
++ return genphy_c37_config_aneg(phydev);
++ }
++
+ ret = at803x_config_mdix(phydev, phydev->mdix_ctrl);
+ if (ret < 0)
+ return ret;
+@@ -1120,6 +1203,7 @@ static struct phy_driver at803x_driver[]
+ .suspend = at803x_suspend,
+ .resume = at803x_resume,
+ /* PHY_GBIT_FEATURES */
++ .config_aneg = at803x_config_aneg,
+ .read_status = at803x_read_status,
+ .aneg_done = at803x_aneg_done,
+ .ack_interrupt = &at803x_ack_interrupt,