linux-kernel - [PATCH 09/20] phy: qcom-qmp-combo: increase status polling period

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Message-Id: <20221012085002.24099-9-johan+linaro@kernel.org>
Date:   Wed, 12 Oct 2022 10:49:51 +0200
From:   Johan Hovold <johan+linaro@...nel.org>
To:     Vinod Koul <vkoul@...nel.org>
Cc:     Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...ainline.org>,
        Kishon Vijay Abraham I <kishon@...com>,
        Dmitry Baryshkov <dmitry.baryshkov@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org,
        linux-kernel@...r.kernel.org,
        Johan Hovold <johan+linaro@...nel.org>
Subject: [PATCH 09/20] phy: qcom-qmp-combo: increase status polling period

It typically takes between one and two milliseconds for the PHY to
become ready after starting it. Increase the tight 3--10 us polling
period to the more reasonable 51--200 us.

Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index e312cad6d9c2..0071c73ac1c8 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -2052,7 +2052,7 @@ static int qmp_combo_power_on(struct phy *phy)
 		qphy_setbits(pcs, cfg->regs[QPHY_START_CTRL], cfg->start_ctrl);
 
 		status = pcs + cfg->regs[QPHY_PCS_STATUS];
-		ret = readl_poll_timeout(status, val, !(val & PHYSTATUS), 10,
+		ret = readl_poll_timeout(status, val, !(val & PHYSTATUS), 200,
 					 PHY_INIT_COMPLETE_TIMEOUT);
 		if (ret) {
 			dev_err(qmp->dev, "phy initialization timed-out\n");
-- 
2.35.1