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 <tho...@reifferscheid.org> Acked-by: Andy Gross <andy.gr...@linaro.org> --- Changes sinve v4: * Consult author and fix the BIT value Changes since v3: * Revert v1/v2 * Set SSUSB_CTRL_TEST_POWERDOWN instead * Test and clear the bit during ss init Changes since v2: * be more verbose Changes since v1: * be more verbose in explaining the mistake .../ipq806x/patches-4.9/0032-phy-add-qcom-dwc3-phy.patch | 14 +++++++++++--- 1 file changed, 11 insertions(+), 3 deletions(-) diff --git a/target/linux/ipq806x/patches-4.9/0032-phy-add-qcom-dwc3-phy.patch b/target/linux/ipq806x/patches-4.9/0032-phy-add-qcom-dwc3-phy.patch index 39e918f..261836e 100644 --- a/target/linux/ipq806x/patches-4.9/0032-phy-add-qcom-dwc3-phy.patch +++ b/target/linux/ipq806x/patches-4.9/0032-phy-add-qcom-dwc3-phy.patch @@ -39,7 +39,7 @@ Signed-off-by: Andy Gross <agr...@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 <agr...@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 <agr...@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 <agr...@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; +} -- 2.1.4 _______________________________________________ Lede-dev mailing list Lede-dev@lists.infradead.org http://lists.infradead.org/mailman/listinfo/lede-dev