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From: Marc Gonzalez <marc.w.gonzalez@free.fr>
To: Kishon Vijay Abraham <kishon@ti.com>,
	Bjorn Andersson <bjorn.andersson@linaro.org>,
	Vivek Gautam <vivek.gautam@codeaurora.org>
Cc: MSM <linux-arm-msm@vger.kernel.org>, LKML <linux-kernel@vger.kernel.org>
Subject: [PATCH v1] phy: qcom-qmp: Raise qcom_qmp_phy_enable() polling delay
Date: Thu, 13 Jun 2019 13:32:08 +0200
Message-ID: <92d97c68-d226-6290-37d6-f46f42ea604b@free.fr> (raw)

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@free.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

             reply index

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-13 11:32 Marc Gonzalez [this message]
2019-06-14  9:50 ` Vivek Gautam
2019-06-14 12:38   ` Marc Gonzalez
2019-06-20  6:25     ` Kishon Vijay Abraham I
2019-06-24 11:55       ` Marc Gonzalez
2019-06-24 15:52 ` Doug Anderson

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