MLK-20158-3 usb: phy: mxs: add wakeup enable for imx7ulp
This wakeup setting can enable USB wakeup function even the controller's power is lost, and both A7 and M4 are in VLLS mode. Signed-off-by: Peter Chen <peter.chen@nxp.com>pull/10/head
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bdd5bc98ae
commit
f294866e53
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@ -159,6 +159,10 @@
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#define DCD_SDP_PORT BIT(16)
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#define DCD_CDP_PORT BIT(17)
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#define DCD_DCP_PORT (BIT(16) | BIT(17))
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/* System Integration Module (SIM) Registers */
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#define SIM_GPR1 0x30
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#define USB_PHY_VLLS_WAKEUP_EN BIT(0)
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#define to_mxs_phy(p) container_of((p), struct mxs_phy, phy)
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@ -263,6 +267,7 @@ struct mxs_phy {
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struct clk *clk;
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const struct mxs_phy_data *data;
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struct regmap *regmap_anatop;
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struct regmap *regmap_sim;
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int port_id;
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u32 tx_reg_set;
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u32 tx_reg_mask;
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@ -1014,6 +1019,17 @@ static int mxs_phy_probe(struct platform_device *pdev)
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}
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}
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/* Currently, only imx7ulp has SIM module */
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if (of_get_property(np, "nxp,sim", NULL)) {
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mxs_phy->regmap_sim = syscon_regmap_lookup_by_phandle
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(np, "nxp,sim");
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if (IS_ERR(mxs_phy->regmap_sim)) {
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dev_dbg(&pdev->dev,
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"failed to find regmap for sim\n");
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return PTR_ERR(mxs_phy->regmap_sim);
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}
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}
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/* Precompute which bits of the TX register are to be updated, if any */
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if (!of_property_read_u32(np, "fsl,tx-cal-45-dn-ohms", &val) &&
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val >= MXS_PHY_TX_CAL45_MIN && val <= MXS_PHY_TX_CAL45_MAX) {
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@ -1107,6 +1123,22 @@ static int mxs_phy_remove(struct platform_device *pdev)
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}
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#ifdef CONFIG_PM_SLEEP
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static void mxs_phy_wakeup_enable(struct mxs_phy *mxs_phy, bool on)
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{
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u32 mask = USB_PHY_VLLS_WAKEUP_EN;
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/* If the SoCs don't have SIM, quit */
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if (!mxs_phy->regmap_sim)
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return;
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if (on) {
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regmap_update_bits(mxs_phy->regmap_sim, SIM_GPR1, mask, mask);
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udelay(500);
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} else {
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regmap_update_bits(mxs_phy->regmap_sim, SIM_GPR1, mask, 0);
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}
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}
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static void mxs_phy_enable_ldo_in_suspend(struct mxs_phy *mxs_phy, bool on)
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{
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unsigned int reg;
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@ -1139,8 +1171,10 @@ static int mxs_phy_system_suspend(struct device *dev)
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{
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struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
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if (device_may_wakeup(dev))
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if (device_may_wakeup(dev)) {
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mxs_phy_enable_ldo_in_suspend(mxs_phy, true);
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mxs_phy_wakeup_enable(mxs_phy, true);
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}
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return 0;
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}
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@ -1149,8 +1183,10 @@ static int mxs_phy_system_resume(struct device *dev)
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{
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struct mxs_phy *mxs_phy = dev_get_drvdata(dev);
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if (device_may_wakeup(dev))
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if (device_may_wakeup(dev)) {
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mxs_phy_enable_ldo_in_suspend(mxs_phy, false);
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mxs_phy_wakeup_enable(mxs_phy, false);
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}
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return 0;
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}
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