Commit 3584f639 authored by Neil Armstrong's avatar Neil Armstrong Committed by Vinod Koul
Browse files

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: default avatarAbel Vesa <abel.vesa@linaro.org>
Signed-off-by: default avatarAbel Vesa <abel.vesa@linaro.org>
Signed-off-by: default avatarNeil Armstrong <neil.armstrong@linaro.org>
Link: https://lore.kernel.org/r/20230208190200.2966723-6-abel.vesa@linaro.org


Signed-off-by: default avatarVinod Koul <vkoul@kernel.org>
parent 56d77c9a

drivers/phy/qualcomm/phy-qcom-snps-eusb2.c

+18 −1
Original line number Diff line number Diff line
@@ -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);