linux-kernel - [PATCH v1] phy: qcom-qmp: Raise qcom_qmp_phy

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Date:   Thu, 13 Jun 2019 13:32:08 +0200
From:   Marc Gonzalez <marc.w.gonzalez@...e.fr>
To:     Kishon Vijay Abraham <kishon@...com>,
        Bjorn Andersson <bjorn.andersson@...aro.org>,
        Vivek Gautam <vivek.gautam@...eaurora.org>
Cc:     MSM <linux-arm-msm@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: [PATCH v1] phy: qcom-qmp: Raise qcom_qmp_phy_enable() polling delay

readl_poll_timeout() calls usleep_range() to sleep between reads.
usleep_range() doesn't work efficiently for tiny values.

Raise the polling delay in qcom_qmp_phy_enable() to bring it in line
with the delay in qcom_qmp_phy_com_init().

Signed-off-by: Marc Gonzalez <marc.w.gonzalez@...e.fr>
---
Vivek, do you remember why you didn't use the same delay value in
qcom_qmp_phy_enable) and qcom_qmp_phy_com_init() ?
---
 drivers/phy/qualcomm/phy-qcom-qmp.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp.c b/drivers/phy/qualcomm/phy-qcom-qmp.c
index bb522b915fa9..34ff6434da8f 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp.c
@@ -1548,7 +1548,7 @@ static int qcom_qmp_phy_enable(struct phy *phy)
 	status = pcs + cfg->regs[QPHY_PCS_READY_STATUS];
 	mask = cfg->mask_pcs_ready;
 
-	ret = readl_poll_timeout(status, val, val & mask, 1,
+	ret = readl_poll_timeout(status, val, val & mask, 10,
 				 PHY_INIT_COMPLETE_TIMEOUT);
 	if (ret) {
 		dev_err(qmp->dev, "phy initialization timed-out\n");
-- 
2.17.1