This adds support for the USB2 PHY found in the Amlogic A1 SoC Family.
It supports host mode only.
Signed-off-by: Hanjie Lin <hanjie.lin@xxxxxxxxxxx>
Signed-off-by: Yue Wang <yue.wang@xxxxxxxxxxx>
---
drivers/phy/amlogic/phy-meson-g12a-usb2.c | 102 ++++++++++++++++++++++--------
1 file changed, 74 insertions(+), 28 deletions(-)
diff --git a/drivers/phy/amlogic/phy-meson-g12a-usb2.c b/drivers/phy/amlogic/phy-meson-g12a-usb2.c
index 9065ffc..2c242d3 100644
--- a/drivers/phy/amlogic/phy-meson-g12a-usb2.c
+++ b/drivers/phy/amlogic/phy-meson-g12a-usb2.c
@@ -146,11 +146,18 @@
#define RESET_COMPLETE_TIME 1000
#define PLL_RESET_COMPLETE_TIME 100
+enum {
+ MESON_USB2_PHY_VERSION_10 = 0,
+ MESON_USB2_PHY_VERSION_11,
+ MESON_USB2_PHY_VERSION_COUNT,
+};
+
struct phy_meson_g12a_usb2_priv {
struct device *dev;
struct regmap *regmap;
struct clk *clk;
struct reset_control *reset;
+ int phy_version;
};
static const struct regmap_config phy_meson_g12a_usb2_regmap_conf = {
@@ -192,18 +199,33 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
FIELD_PREP(PHY_CTRL_R17_MPLL_FILTER_PVT2, 2) |
FIELD_PREP(PHY_CTRL_R17_MPLL_FILTER_PVT1, 9));
- regmap_write(priv->regmap, PHY_CTRL_R18,
- FIELD_PREP(PHY_CTRL_R18_MPLL_LKW_SEL, 1) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_LK_W, 9) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_LK_S, 0x27) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_PFD_GAIN, 1) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_ROU, 7) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_DATA_SEL, 3) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_BIAS_ADJ, 1) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_BB_MODE, 0) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_ALPHA, 3) |
- FIELD_PREP(PHY_CTRL_R18_MPLL_ADJ_LDO, 1) |
- PHY_CTRL_R18_MPLL_ACG_RANGE);
+ if (priv->phy_version == MESON_USB2_PHY_VERSION_10)
+ regmap_write(priv->regmap, PHY_CTRL_R18,
+ FIELD_PREP(PHY_CTRL_R18_MPLL_LKW_SEL, 1) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_LK_W, 9) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_LK_S, 0x27) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_PFD_GAIN, 1) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_ROU, 7) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_DATA_SEL, 3) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_BIAS_ADJ, 1) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_BB_MODE, 0) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_ALPHA, 3) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_ADJ_LDO, 1) |
+ PHY_CTRL_R18_MPLL_ACG_RANGE);
+ else if (priv->phy_version == MESON_USB2_PHY_VERSION_11)
+ regmap_write(priv->regmap, PHY_CTRL_R18,
+ FIELD_PREP(PHY_CTRL_R18_MPLL_LKW_SEL, 1) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_LK_W, 9) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_LK_S, 0x27) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_PFD_GAIN, 1) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_ROU, 7) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_DATA_SEL, 3) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_BIAS_ADJ, 1) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_BB_MODE, 0) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_ALPHA, 3) |
+ FIELD_PREP(PHY_CTRL_R18_MPLL_ADJ_LDO, 1) |
+ PHY_CTRL_R18_MPLL_ACG_RANGE |
+ PHY_CTRL_R18_MPLL_DCO_CLK_SEL);
udelay(PLL_RESET_COMPLETE_TIME);
@@ -227,13 +249,24 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
FIELD_PREP(PHY_CTRL_R20_USB2_BGR_VREF_4_0, 0) |
FIELD_PREP(PHY_CTRL_R20_USB2_BGR_DBG_1_0, 0));
- regmap_write(priv->regmap, PHY_CTRL_R4,
- FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_7_0, 0xf) |
- FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_15_8, 0xf) |
- FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_23_16, 0xf) |
- PHY_CTRL_R4_TEST_BYPASS_MODE_EN |
- FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_1_0, 0) |
- FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_3_2, 0));
+ if (priv->phy_version == MESON_USB2_PHY_VERSION_10)
+ regmap_write(priv->regmap, PHY_CTRL_R4,
+ FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_7_0, 0xf) |
+ FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_15_8, 0xf) |
+ FIELD_PREP(PHY_CTRL_R4_CALIB_CODE_23_16, 0xf) |
+ PHY_CTRL_R4_TEST_BYPASS_MODE_EN |
+ FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_1_0, 0) |
+ FIELD_PREP(PHY_CTRL_R4_I_C2L_BIAS_TRIM_3_2, 0));
+ else if (priv->phy_version == MESON_USB2_PHY_VERSION_11) {
+ regmap_write(priv->regmap, PHY_CTRL_R21,
+ PHY_CTRL_R21_USB2_CAL_ACK_EN |
+ PHY_CTRL_R21_USB2_TX_STRG_PD |
+ FIELD_PREP(PHY_CTRL_R21_USB2_OTG_ACA_TRIM_1_0, 2));
+
+ /* Analog Settings */
+ regmap_write(priv->regmap, PHY_CTRL_R13,
+ FIELD_PREP(PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET, 7));
+ }
/* Tuning Disconnect Threshold */
regmap_write(priv->regmap, PHY_CTRL_R3,
@@ -241,11 +274,13 @@ static int phy_meson_g12a_usb2_init(struct phy *phy)
FIELD_PREP(PHY_CTRL_R3_HSDIC_REF, 1) |
FIELD_PREP(PHY_CTRL_R3_DISC_THRESH, 3));
- /* Analog Settings */
- regmap_write(priv->regmap, PHY_CTRL_R14, 0);
- regmap_write(priv->regmap, PHY_CTRL_R13,
- PHY_CTRL_R13_UPDATE_PMA_SIGNALS |
- FIELD_PREP(PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET, 7));
+ if (priv->phy_version == MESON_USB2_PHY_VERSION_10) {
+ /* Analog Settings */
+ regmap_write(priv->regmap, PHY_CTRL_R14, 0);
+ regmap_write(priv->regmap, PHY_CTRL_R13,
+ PHY_CTRL_R13_UPDATE_PMA_SIGNALS |
+ FIELD_PREP(PHY_CTRL_R13_MIN_COUNT_FOR_SYNC_DET, 7));
+ }
return 0;
}
@@ -271,6 +306,7 @@ static int phy_meson_g12a_usb2_probe(struct platform_device *pdev)
struct resource *res;
struct phy_meson_g12a_usb2_priv *priv;
struct phy *phy;
+ struct device_node *np = dev->of_node;
void __iomem *base;
int ret;
@@ -286,14 +322,23 @@ static int phy_meson_g12a_usb2_probe(struct platform_device *pdev)
if (IS_ERR(base))
return PTR_ERR(base);
+ if (of_device_is_compatible(np, "amlogic,g12a-usb2-phy"))
+ priv->phy_version = MESON_USB2_PHY_VERSION_10;
+ else if (of_device_is_compatible(np, "amlogic,a1-usb2-phy"))
+ priv->phy_version = MESON_USB2_PHY_VERSION_11;
+ else
+ return -EINVAL;
+
priv->regmap = devm_regmap_init_mmio(dev, base,
&phy_meson_g12a_usb2_regmap_conf);
if (IS_ERR(priv->regmap))
return PTR_ERR(priv->regmap);
- priv->clk = devm_clk_get(dev, "xtal");
- if (IS_ERR(priv->clk))
- return PTR_ERR(priv->clk);
+ if (priv->phy_version == MESON_USB2_PHY_VERSION_10) {
+ priv->clk = devm_clk_get(dev, "xtal");
+ if (IS_ERR(priv->clk))
+ return PTR_ERR(priv->clk);
+ }
priv->reset = devm_reset_control_get(dev, "phy");
if (IS_ERR(priv->reset))
@@ -322,7 +367,8 @@ static int phy_meson_g12a_usb2_probe(struct platform_device *pdev)
static const struct of_device_id phy_meson_g12a_usb2_of_match[] = {
{ .compatible = "amlogic,g12a-usb2-phy", },
- { },
+ { .compatible = "amlogic,a1-usb2-phy", },
+ { /* Sentinel */ }
};
MODULE_DEVICE_TABLE(of, phy_meson_g12a_usb2_of_match);
--
2.7.4
