linux-kernel - [PATCH v3 4/4] phy: qcom: phy-qcom-snps-eusb2: Update init sequence per HPG 1.0.2

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Message-Id: <20250715-sm7635-eusb-phy-v3-4-6c3224085eb6@fairphone.com>
Date: Tue, 15 Jul 2025 09:29:37 +0200
From: Luca Weiss <luca.weiss@...rphone.com>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Wesley Cheng <quic_wcheng@...cinc.com>, 
 Vinod Koul <vkoul@...nel.org>, Kishon Vijay Abraham I <kishon@...nel.org>, 
 Abel Vesa <abel.vesa@...aro.org>
Cc: ~postmarketos/upstreaming@...ts.sr.ht, phone-devel@...r.kernel.org, 
 linux-arm-msm@...r.kernel.org, linux-usb@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
 linux-phy@...ts.infradead.org, Luca Weiss <luca.weiss@...rphone.com>
Subject: [PATCH v3 4/4] phy: qcom: phy-qcom-snps-eusb2: Update init
 sequence per HPG 1.0.2

The eUSB2 HPG version 1.0.2 asks to clear bits [7:1] on all targets.
Implement that change in the driver to follow.

See also https://lore.kernel.org/linux-arm-msm/7d073433-f254-4d75-a68b-d184f900294a@oss.qualcomm.com/

Signed-off-by: Luca Weiss <luca.weiss@...rphone.com>
---
 drivers/phy/phy-snps-eusb2.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/phy/phy-snps-eusb2.c b/drivers/phy/phy-snps-eusb2.c
index e232b8b4d29100b8fee9e913e2124788af09f2aa..90b3da79900467dccbbec226db1cc83297ce8834 100644
--- a/drivers/phy/phy-snps-eusb2.c
+++ b/drivers/phy/phy-snps-eusb2.c
@@ -392,7 +392,7 @@ static int qcom_snps_eusb2_hsphy_init(struct phy *p)
 
 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_1,
 				    PHY_CFG_PLL_CPBIAS_CNTRL_MASK,
-				    FIELD_PREP(PHY_CFG_PLL_CPBIAS_CNTRL_MASK, 0x1));
+				    FIELD_PREP(PHY_CFG_PLL_CPBIAS_CNTRL_MASK, 0x0));
 
 	snps_eusb2_hsphy_write_mask(phy->base, QCOM_USB_PHY_CFG_CTRL_4,
 				    PHY_CFG_PLL_INT_CNTRL_MASK,

-- 
2.50.1