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authorKishon Vijay Abraham I <kishon@ti.com>2021-03-10 17:38:37 +0530
committerVinod Koul <vkoul@kernel.org>2021-03-30 23:33:21 +0530
commit6ecac2f8ff1abbae464d6ce451ee07d49cdb2982 (patch)
tree71bed2094db2887acfecb7fc08ee382c707a0b4b /drivers/phy/ti
parent7e52a39f1942b771213678c56002ce90a2f126d2 (diff)
phy: ti: j721e-wiz: Configure full rate divider for AM64
The frequency of the txmclk between PCIe and SERDES has changed to 250MHz from 500MHz. Configure full rate divider for AM64 accordingly. Signed-off-by: Kishon Vijay Abraham I <kishon@ti.com> Link: https://lore.kernel.org/r/20210310120840.16447-4-kishon@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy/ti')
-rw-r--r--drivers/phy/ti/phy-j721e-wiz.c39
1 files changed, 36 insertions, 3 deletions
diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index 5042e256a7e1..f5128f2690a6 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -101,6 +101,13 @@ static const struct reg_field p_standard_mode[WIZ_MAX_LANES] = {
REG_FIELD(WIZ_LANECTL(3), 24, 25),
};
+static const struct reg_field p0_fullrt_div[WIZ_MAX_LANES] = {
+ REG_FIELD(WIZ_LANECTL(0), 22, 23),
+ REG_FIELD(WIZ_LANECTL(1), 22, 23),
+ REG_FIELD(WIZ_LANECTL(2), 22, 23),
+ REG_FIELD(WIZ_LANECTL(3), 22, 23),
+};
+
static const struct reg_field typec_ln10_swap =
REG_FIELD(WIZ_SERDES_TYPEC, 30, 30);
@@ -191,6 +198,7 @@ static const struct wiz_clk_div_sel clk_div_sel[] = {
enum wiz_type {
J721E_WIZ_16G,
J721E_WIZ_10G,
+ AM64_WIZ_10G,
};
#define WIZ_TYPEC_DIR_DEBOUNCE_MIN 100 /* ms */
@@ -208,6 +216,7 @@ struct wiz {
struct regmap_field *p_align[WIZ_MAX_LANES];
struct regmap_field *p_raw_auto_start[WIZ_MAX_LANES];
struct regmap_field *p_standard_mode[WIZ_MAX_LANES];
+ struct regmap_field *p0_fullrt_div[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;
@@ -373,7 +382,7 @@ static int wiz_regfield_init(struct wiz *wiz)
return PTR_ERR(wiz->mux_sel_field[PLL1_REFCLK]);
}
- if (wiz->type == J721E_WIZ_10G)
+ if (wiz->type == J721E_WIZ_10G || wiz->type == AM64_WIZ_10G)
wiz->mux_sel_field[REFCLK_DIG] =
devm_regmap_field_alloc(dev, regmap,
refclk_dig_sel_10g);
@@ -417,6 +426,12 @@ static int wiz_regfield_init(struct wiz *wiz)
i);
return PTR_ERR(wiz->p_standard_mode[i]);
}
+
+ wiz->p0_fullrt_div[i] = devm_regmap_field_alloc(dev, regmap, p0_fullrt_div[i]);
+ if (IS_ERR(wiz->p0_fullrt_div[i])) {
+ dev_err(dev, "P%d_FULLRT_DIV reg field init failed\n", i);
+ return PTR_ERR(wiz->p0_fullrt_div[i]);
+ }
}
wiz->typec_ln10_swap = devm_regmap_field_alloc(dev, regmap,
@@ -718,6 +733,17 @@ static int wiz_phy_reset_assert(struct reset_controller_dev *rcdev,
return ret;
}
+static int wiz_phy_fullrt_div(struct wiz *wiz, int lane)
+{
+ if (wiz->type != AM64_WIZ_10G)
+ return 0;
+
+ if (wiz->lane_phy_type[lane] == PHY_TYPE_PCIE)
+ return regmap_field_write(wiz->p0_fullrt_div[lane], 0x1);
+
+ return 0;
+}
+
static int wiz_phy_reset_deassert(struct reset_controller_dev *rcdev,
unsigned long id)
{
@@ -741,6 +767,10 @@ static int wiz_phy_reset_deassert(struct reset_controller_dev *rcdev,
return ret;
}
+ ret = wiz_phy_fullrt_div(wiz, id - 1);
+ if (ret)
+ return ret;
+
if (wiz->lane_phy_type[id - 1] == PHY_TYPE_DP)
ret = regmap_field_write(wiz->p_enable[id - 1], P_ENABLE);
else
@@ -768,6 +798,9 @@ static const struct of_device_id wiz_id_table[] = {
{
.compatible = "ti,j721e-wiz-10g", .data = (void *)J721E_WIZ_10G
},
+ {
+ .compatible = "ti,am64-wiz-10g", .data = (void *)AM64_WIZ_10G
+ },
{}
};
MODULE_DEVICE_TABLE(of, wiz_id_table);
@@ -900,14 +933,14 @@ static int wiz_probe(struct platform_device *pdev)
wiz->dev = dev;
wiz->regmap = regmap;
wiz->num_lanes = num_lanes;
- if (wiz->type == J721E_WIZ_10G)
+ if (wiz->type == J721E_WIZ_10G || wiz->type == AM64_WIZ_10G)
wiz->clk_mux_sel = clk_mux_sel_10g;
else
wiz->clk_mux_sel = clk_mux_sel_16g;
wiz->clk_div_sel = clk_div_sel;
- if (wiz->type == J721E_WIZ_10G)
+ if (wiz->type == J721E_WIZ_10G || wiz->type == AM64_WIZ_10G)
wiz->clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_10G;
else
wiz->clk_div_sel_num = WIZ_DIV_NUM_CLOCKS_16G;