phy: ti: phy-j721e-wiz.c: Add usxgmii support in wiz driver

Changes the wiz_p_mac_div_sel() and wiz_mode_select() to
configure serdes for USXGMII.

Adds the support to configure mac_src_sel, refclk_sel and
rxfclk_sel in the LANECTL register and configures the serdes for
usxgmii.

[rogerq] Fix MAC_SRC_SEL to 0x3 for USXGMII as per CSL code.

Signed-off-by: Tanmay Patil <t-patil@ti.com>
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Link: https://lore.kernel.org/r/20220628122255.24265-4-rogerq@kernel.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index 8c10ee8..77accea 100644 (file)
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -129,6 +129,26 @@ static const struct reg_field p0_fullrt_div[WIZ_MAX_LANES] = {
        REG_FIELD(WIZ_LANECTL(3), 22, 23),
 };
 
+static const struct reg_field p0_mac_src_sel[WIZ_MAX_LANES] = {
+       REG_FIELD(WIZ_LANECTL(0), 20, 21),
+       REG_FIELD(WIZ_LANECTL(1), 20, 21),
+       REG_FIELD(WIZ_LANECTL(2), 20, 21),
+       REG_FIELD(WIZ_LANECTL(3), 20, 21),
+};
+
+static const struct reg_field p0_rxfclk_sel[WIZ_MAX_LANES] = {
+       REG_FIELD(WIZ_LANECTL(0), 6, 7),
+       REG_FIELD(WIZ_LANECTL(1), 6, 7),
+       REG_FIELD(WIZ_LANECTL(2), 6, 7),
+       REG_FIELD(WIZ_LANECTL(3), 6, 7),
+};
+
+static const struct reg_field p0_refclk_sel[WIZ_MAX_LANES] = {
+       REG_FIELD(WIZ_LANECTL(0), 18, 19),
+       REG_FIELD(WIZ_LANECTL(1), 18, 19),
+       REG_FIELD(WIZ_LANECTL(2), 18, 19),
+       REG_FIELD(WIZ_LANECTL(3), 18, 19),
+};
 static const struct reg_field p_mac_div_sel0[WIZ_MAX_LANES] = {
        REG_FIELD(WIZ_LANEDIV(0), 16, 22),
        REG_FIELD(WIZ_LANEDIV(1), 16, 22),
@@ -280,6 +300,9 @@ struct wiz {
        struct regmap_field     *p_mac_div_sel0[WIZ_MAX_LANES];
        struct regmap_field     *p_mac_div_sel1[WIZ_MAX_LANES];
        struct regmap_field     *p0_fullrt_div[WIZ_MAX_LANES];
+       struct regmap_field     *p0_mac_src_sel[WIZ_MAX_LANES];
+       struct regmap_field     *p0_rxfclk_sel[WIZ_MAX_LANES];
+       struct regmap_field     *p0_refclk_sel[WIZ_MAX_LANES];
        struct regmap_field     *pma_cmn_refclk_int_mode;
        struct regmap_field     *pma_cmn_refclk_mode;
        struct regmap_field     *pma_cmn_refclk_dig_div;
@@ -326,7 +349,8 @@ static int wiz_p_mac_div_sel(struct wiz *wiz)
 
        for (i = 0; i < num_lanes; i++) {
                if (wiz->lane_phy_type[i] == PHY_TYPE_SGMII ||
-                   wiz->lane_phy_type[i] == PHY_TYPE_QSGMII) {
+                   wiz->lane_phy_type[i] == PHY_TYPE_QSGMII ||
+                   wiz->lane_phy_type[i] == PHY_TYPE_USXGMII) {
                        ret = regmap_field_write(wiz->p_mac_div_sel0[i], 1);
                        if (ret)
                                return ret;
@@ -355,6 +379,13 @@ static int wiz_mode_select(struct wiz *wiz)
                else
                        continue;
 
+               if (wiz->lane_phy_type[i] == PHY_TYPE_USXGMII) {
+                       ret = regmap_field_write(wiz->p0_mac_src_sel[i], 0x3);
+                       ret = regmap_field_write(wiz->p0_rxfclk_sel[i], 0x3);
+                       ret = regmap_field_write(wiz->p0_refclk_sel[i], 0x3);
+                       mode = LANE_MODE_GEN1;
+               }
+
                ret = regmap_field_write(wiz->p_standard_mode[i], mode);
                if (ret)
                        return ret;
@@ -524,6 +555,24 @@ static int wiz_regfield_init(struct wiz *wiz)
                        return PTR_ERR(wiz->p0_fullrt_div[i]);
                }
 
+               wiz->p0_mac_src_sel[i] = devm_regmap_field_alloc(dev, regmap, p0_mac_src_sel[i]);
+               if (IS_ERR(wiz->p0_mac_src_sel[i])) {
+                       dev_err(dev, "P%d_MAC_SRC_SEL reg field init failed\n", i);
+                       return PTR_ERR(wiz->p0_mac_src_sel[i]);
+               }
+
+               wiz->p0_rxfclk_sel[i] = devm_regmap_field_alloc(dev, regmap, p0_rxfclk_sel[i]);
+               if (IS_ERR(wiz->p0_rxfclk_sel[i])) {
+                       dev_err(dev, "P%d_RXFCLK_SEL reg field init failed\n", i);
+                       return PTR_ERR(wiz->p0_rxfclk_sel[i]);
+               }
+
+               wiz->p0_refclk_sel[i] = devm_regmap_field_alloc(dev, regmap, p0_refclk_sel[i]);
+               if (IS_ERR(wiz->p0_refclk_sel[i])) {
+                       dev_err(dev, "P%d_REFCLK_SEL reg field init failed\n", i);
+                       return PTR_ERR(wiz->p0_refclk_sel[i]);
+               }
+
                wiz->p_mac_div_sel0[i] =
                  devm_regmap_field_alloc(dev, regmap, p_mac_div_sel0[i]);
                if (IS_ERR(wiz->p_mac_div_sel0[i])) {