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From:   Marek Szyprowski <m.szyprowski@samsung.com>
To:     linux-usb@vger.kernel.org, linux-samsung-soc@vger.kernel.org
Cc:     linux-kernel@vger.kernel.org, Vinod Koul <vkoul@kernel.org>,
        Kishon Vijay Abraham I <kishon@ti.com>,
        Marek Szyprowski <m.szyprowski@samsung.com>,
        Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>,
        Krzysztof Kozlowski <krzk@kernel.org>
Subject: [PATCH RESEND] phy: exynos5-usbdrd: Calibrating makes sense only
 for USB2.0 PHY
Date:   Wed,  8 Jul 2020 15:38:00 +0200
Message-Id: <20200708133800.3336-1-m.szyprowski@samsung.com>
Content-Type: text/plain; charset="utf-8"
CMS-TYPE: 201P
References: <CGME20200708133811eucas1p1df7b92d7e0ba512c5a7ecdb948edbfcf@eucas1p1.samsung.com>
Sender: linux-kernel-owner@vger.kernel.org
Precedence: bulk

PHY calibration is needed only for USB2.0 (UTMI) PHY, so skip calling
calibration code when phy_calibrate() is called for USB3.0 (PIPE3) PHY.

Fixes: d8c80bb3b55b ("phy: exynos5-usbdrd: Calibrate LOS levels for exynos5420/5800")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
---
 drivers/phy/samsung/phy-exynos5-usbdrd.c | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/samsung/phy-exynos5-usbdrd.c b/drivers/phy/samsung/phy-exynos5-usbdrd.c
index 646259bee909..f07edd80d2f3 100644
--- a/drivers/phy/samsung/phy-exynos5-usbdrd.c
+++ b/drivers/phy/samsung/phy-exynos5-usbdrd.c
@@ -714,7 +714,9 @@ static int exynos5_usbdrd_phy_calibrate(struct phy *phy)
 	struct phy_usb_instance *inst = phy_get_drvdata(phy);
 	struct exynos5_usbdrd_phy *phy_drd = to_usbdrd_phy(inst);
 
-	return exynos5420_usbdrd_phy_calibrate(phy_drd);
+	if (inst->phy_cfg->id == EXYNOS5_DRDPHY_UTMI)
+		return exynos5420_usbdrd_phy_calibrate(phy_drd);
+	return 0;
 }
 
 static const struct phy_ops exynos5_usbdrd_phy_ops = {
-- 
2.17.1