On Tue, Jun 19, 2018 at 2:06 PM, Can Guo <cang@xxxxxxxxxxxxxx> wrote:
> All PHYs should be powered on before register configuration starts. And
> only PCIe PHYs need an extra power control before deasserts reset state.
>
> Signed-off-by: Can Guo <cang@xxxxxxxxxxxxxx>
> ---
> drivers/phy/qualcomm/phy-qcom-qmp.c | 19 ++++++++++++-------
> 1 file changed, 12 insertions(+), 7 deletions(-)
>
> diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
> index 97ef942..ccb8578 100644
> --- a/drivers/phy/qualcomm/phy-qcom-qmp.c
> +++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
> @@ -935,10 +935,12 @@ static void qcom_qmp_phy_configure(void __iomem *base,
> }
> }
>
> -static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp)
> +static int qcom_qmp_phy_com_init(struct qmp_phy *qphy)
> {
> + struct qcom_qmp *qmp = qphy->qmp;
> const struct qmp_phy_cfg *cfg = qmp->cfg;
> void __iomem *serdes = qmp->serdes;
> + void __iomem *pcs = qphy->pcs;
> void __iomem *dp_com = qmp->dp_com;
> int ret, i;
>
> @@ -979,10 +981,6 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp)
> goto err_rst;
> }
>
> - if (cfg->has_phy_com_ctrl)
> - qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
> - SW_PWRDN);
> -
> if (cfg->has_phy_dp_com_ctrl) {
> qphy_setbits(dp_com, QPHY_V3_DP_COM_POWER_DOWN_CTRL,
> SW_PWRDN);
> @@ -1000,6 +998,12 @@ static int qcom_qmp_phy_com_init(struct qcom_qmp *qmp)
> SW_USB3PHY_RESET_MUX | SW_USB3PHY_RESET);
> }
>
> + if (cfg->has_phy_com_ctrl)
> + qphy_setbits(serdes, cfg->regs[QPHY_COM_POWER_DOWN_CONTROL],
> + SW_PWRDN);
> + else
> + qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
> +
> /* Serdes configuration */
> qcom_qmp_phy_configure(serdes, cfg->regs, cfg->serdes_tbl,
> cfg->serdes_tbl_num);
> @@ -1090,7 +1094,7 @@ static int qcom_qmp_phy_init(struct phy *phy)
>
> dev_vdbg(qmp->dev, "Initializing QMP phy\n");
>
> - ret = qcom_qmp_phy_com_init(qmp);
> + ret = qcom_qmp_phy_com_init(qphy);
> if (ret)
> return ret;
>
> @@ -1127,7 +1131,8 @@ static int qcom_qmp_phy_init(struct phy *phy)
> * Pull out PHY from POWER DOWN state.
> * This is active low enable signal to power-down PHY.
> */
> - qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
> + if(cfg->type == PHY_TYPE_PCIE)
> + qphy_setbits(pcs, QPHY_POWER_DOWN_CONTROL, cfg->pwrdn_ctrl);
>
> if (cfg->has_pwrdn_delay)
> usleep_range(cfg->pwrdn_delay_min, cfg->pwrdn_delay_max);
> --
> The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
> a Linux Foundation Collaborative Project
>
Looks good.
Reviewed-by: Vivek Gautam <vivek.gautam@xxxxxxxxxxxxxx>
Best regards
Vivek
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