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phy: qcom: phy-qcom-snps-eusb2: Add support for eUSB2 repeater

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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>
This commit is contained in:
Neil Armstrong 2023-02-08 21:01:58 +02:00 committed by Vinod Koul
parent 56d77c9a10
commit 3584f6392f
1 changed files with 18 additions and 1 deletions
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19
drivers/phy/qualcomm/phy-qcom-snps-eusb2.c
View file

@ -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);