On 02-02-23, 15:38, Abel Vesa wrote:
> From: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
>
> 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@xxxxxxxxxx>
> Signed-off-by: Abel Vesa <abel.vesa@xxxxxxxxxx>
> Signed-off-by: Neil Armstrong <neil.armstrong@xxxxxxxxxx>
> ---
> drivers/phy/qualcomm/phy-qcom-snps-eusb2.c | 18 +++++++++++++++++-
> 1 file changed, 17 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c b/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c
> index 23ec162cc3bd..8d972d49732b 100644
> --- a/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c
> +++ b/drivers/phy/qualcomm/phy-qcom-snps-eusb2.c
> @@ -128,6 +128,8 @@ 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)
> @@ -136,7 +138,7 @@ 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,
> @@ -235,6 +237,12 @@ 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);
> @@ -342,6 +350,8 @@ 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;
> }
>
> @@ -386,6 +396,12 @@ 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_phy_get(dev, "eusb2-repeater");
> + if (IS_ERR(phy->repeater))
> + return dev_err_probe(dev, PTR_ERR(phy->repeater),
> + "failed to get repeater\n");
That implies repeater is assumed to be there for all designs, how about
older devices, they may not have a repeater?
> +
> 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);
> --
> 2.34.1
--
~Vinod
