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| author | Neil Armstrong <neil.armstrong@linaro.org> | 2023-02-08 22:01:58 +0300 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2023-02-16 16:10:27 +0300 |
| commit | 3584f6392f09440769246d4936e1fcbff76ac3bc (patch) | |
| tree | 58569e70d366a754af92ae304d4226a062e33a0f /drivers/phy | |
| parent | 56d77c9a10d97d15b8da900f861bc28b06b84b1c (diff) | |
| download | linux-3584f6392f09440769246d4936e1fcbff76ac3bc.tar.xz | |
phy: qcom: phy-qcom-snps-eusb2: Add support for eUSB2 repeater
For USB 2.0 compliance, eUSB2 needs a repeater. The PHY needs to
initialize and reset it. So add repeater support
Co-developed-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Abel Vesa <abel.vesa@linaro.org>
Signed-off-by: Neil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230208190200.2966723-6-abel.vesa@linaro.org
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/phy')
| -rw-r--r-- | drivers/phy/qualcomm/phy-qcom-snps-eusb2.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c b/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c index 64e835b7ef53..eeaa1eb0e24b 100644 --- a/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c +++ b/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c @@ -130,6 +130,8 @@ struct qcom_snps_eusb2_hsphy { struct regulator_bulk_data vregs[EUSB2_NUM_VREGS]; enum phy_mode mode; + + struct phy *repeater; }; static int qcom_snps_eusb2_hsphy_set_mode(struct phy *p, enum phy_mode mode, int submode) @@ -138,7 +140,7 @@ static int qcom_snps_eusb2_hsphy_set_mode(struct phy *p, enum phy_mode mode, int phy->mode = mode; - return 0; + return phy_set_mode_ext(phy->repeater, mode, submode); } static void qcom_snps_eusb2_hsphy_write_mask(void __iomem *base, u32 offset, @@ -236,6 +238,12 @@ static int qcom_snps_eusb2_hsphy_init(struct phy *p) if (ret) return ret; + ret = phy_init(phy->repeater); + if (ret) { + dev_err(&p->dev, "repeater init failed. %d\n", ret); + goto disable_vreg; + } + ret = clk_prepare_enable(phy->ref_clk); if (ret) { dev_err(&p->dev, "failed to enable ref clock, %d\n", ret); @@ -343,6 +351,8 @@ static int qcom_snps_eusb2_hsphy_exit(struct phy *p) regulator_bulk_disable(ARRAY_SIZE(phy->vregs), phy->vregs); + phy_exit(phy->repeater); + return 0; } @@ -356,6 +366,7 @@ static const struct phy_ops qcom_snps_eusb2_hsphy_ops = { static int qcom_snps_eusb2_hsphy_probe(struct platform_device *pdev) { struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; struct qcom_snps_eusb2_hsphy *phy; struct phy_provider *phy_provider; struct phy *generic_phy; @@ -387,6 +398,12 @@ static int qcom_snps_eusb2_hsphy_probe(struct platform_device *pdev) if (ret) return dev_err_probe(dev, ret, "failed to get regulator supplies\n"); + + phy->repeater = devm_of_phy_get_by_index(dev, np, 0); + if (IS_ERR(phy->repeater)) + return dev_err_probe(dev, PTR_ERR(phy->repeater), + "failed to get repeater\n"); + generic_phy = devm_phy_create(dev, NULL, &qcom_snps_eusb2_hsphy_ops); if (IS_ERR(generic_phy)) { dev_err(dev, "failed to create phy %d\n", ret); |