linux-kernel - [PATCH v2 01/13] phy: qcom-qmp-usb: fix sc8280xp PCS

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Message-Id: <20221028134407.19300-2-johan+linaro@kernel.org>
Date:   Fri, 28 Oct 2022 15:43:55 +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>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        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 v2 01/13] phy: qcom-qmp-usb: fix sc8280xp PCS_USB offset

The PCS_USB register block lives at an offset of 0x1000 from the PCS
region on SC8280XP so add the missing offset to avoid corrupting
unrelated registers on runtime suspend.

Note that the current binding is broken as it does not describe the
PCS_USB region and the PCS register size does not cover PCS_USB and the
regions in between. As Linux currently maps full pages, simply adding
the offset to driver works until the binding has been fixed.

Fixes: c0c7769cdae2 ("phy: qcom-qmp: Add SC8280XP USB3 UNI phy")
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index d0c433197080..82af28f4a91b 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1682,6 +1682,7 @@ static const struct qmp_phy_cfg sc8280xp_usb3_uniphy_cfg = {
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v4_usb3phy_regs_layout,
+	.pcs_usb_offset		= 0x1000,
 };
 
 static const struct qmp_phy_cfg qmp_v3_usb3_uniphy_cfg = {
-- 
2.37.3