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ipq8064: Fix dwc3 module unloading

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The patch follows the qualcomm code comments setting
SSUSB_CTRL_TEST_POWERDOWN to 0x1 and is testing and clearing the
bit during USB superspeed PHY init. According to Andy Gross it
needs to be BIT(26).

Signed-off-by: Thomas Reifferscheid <thomas@reifferscheid.org>
Acked-by: Andy Gross <andy.gross@linaro.org>
This commit is contained in:
Thomas Reifferscheid 2017-04-07 12:25:10 +02:00 committed by John Crispin
parent 2db05cd199
commit 8db079a9ff
1 changed files with 11 additions and 3 deletions
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14
target/linux/ipq806x/patches-4.9/0032-phy-add-qcom-dwc3-phy.patch
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@ -39,7 +39,7 @@ Signed-off-by: Andy Gross <agross@codeaurora.org>
+obj-$(CONFIG_PHY_QCOM_DWC3) += phy-qcom-dwc3.o
--- /dev/null
+++ b/drivers/phy/phy-qcom-dwc3.c
@@ -0,0 +1,484 @@
@@ -0,0 +1,492 @@
+/* Copyright (c) 2014-2015, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
@ -99,7 +99,7 @@ Signed-off-by: Andy Gross <agross@codeaurora.org>
+
+/* PHY_CTRL_REG */
+#define SSUSB_CTRL_REF_USE_PAD BIT(28)
+#define SSUSB_CTRL_TEST_POWERDOWN BIT(27)
+#define SSUSB_CTRL_TEST_POWERDOWN BIT(26)
+#define SSUSB_CTRL_LANE0_PWR_PRESENT BIT(24)
+#define SSUSB_CTRL_SS_PHY_EN BIT(8)
+#define SSUSB_CTRL_SS_PHY_RESET BIT(7)
@ -331,6 +331,14 @@ Signed-off-by: Andy Gross <agross@codeaurora.org>
+
+ /* reset phy */
+ data = readl(phy_dwc3->base + SSUSB_PHY_CTRL_REG);
+
+ /* Test and clear SSUSB_CTRL_TEST_POWERDOWN */
+ if (data & SSUSB_CTRL_TEST_POWERDOWN) {
+ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
+ SSUSB_CTRL_TEST_POWERDOWN, 0x0);
+ data = readl(phy_dwc3->base + SSUSB_PHY_CTRL_REG);
+ }
+
+ writel(data | SSUSB_CTRL_SS_PHY_RESET,
+ phy_dwc3->base + SSUSB_PHY_CTRL_REG);
+ usleep_range(2000, 2200);
@ -420,7 +428,7 @@ Signed-off-by: Andy Gross <agross@codeaurora.org>
+ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
+ SSUSB_CTRL_REF_USE_PAD, 0x0);
+ qcom_dwc3_phy_write_readback(phy_dwc3, SSUSB_PHY_CTRL_REG,
+ SSUSB_CTRL_TEST_POWERDOWN, 0x0);
+ SSUSB_CTRL_TEST_POWERDOWN, SSUSB_CTRL_TEST_POWERDOWN);
+
+ return 0;
+}