linux-kernel - [PATCH v2 2/6] phy: qcom-qmp-combo: fix sdm845 reset

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Date:   Mon, 14 Nov 2022 09:13:42 +0100
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@...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>, stable@...r.kernel.org
Subject: [PATCH v2 2/6] phy: qcom-qmp-combo: fix sdm845 reset

The SDM845 has two resets but the DP configuration erroneously described
only one.

In case the DP part of the PHY is initialised before the USB part (e.g.
depending on probe order), then only the first reset would be asserted.

Add a dedicated configuration for SDM845 rather than reuse the
incompatible SC7180 configuration.

Fixes: d88497fb6bbd ("phy: qualcomm: phy-qcom-qmp: add support for combo USB3+DP phy on SDM845")
Cc: stable@...r.kernel.org	# 6.1
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Johan Hovold <johan+linaro@...nel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-combo.c | 39 ++++++++++++++++++++++-
 1 file changed, 38 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
index bb38b18258ca..cc53e2f99121 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-combo.c
@@ -1084,9 +1084,46 @@ static const struct qmp_phy_cfg sdm845_usb3phy_cfg = {
 	.has_pwrdn_delay	= true,
 };
 
+static const struct qmp_phy_cfg sdm845_dpphy_cfg = {
+	.type			= PHY_TYPE_DP,
+	.lanes			= 2,
+
+	.serdes_tbl		= qmp_v3_dp_serdes_tbl,
+	.serdes_tbl_num		= ARRAY_SIZE(qmp_v3_dp_serdes_tbl),
+	.tx_tbl			= qmp_v3_dp_tx_tbl,
+	.tx_tbl_num		= ARRAY_SIZE(qmp_v3_dp_tx_tbl),
+
+	.serdes_tbl_rbr		= qmp_v3_dp_serdes_tbl_rbr,
+	.serdes_tbl_rbr_num	= ARRAY_SIZE(qmp_v3_dp_serdes_tbl_rbr),
+	.serdes_tbl_hbr		= qmp_v3_dp_serdes_tbl_hbr,
+	.serdes_tbl_hbr_num	= ARRAY_SIZE(qmp_v3_dp_serdes_tbl_hbr),
+	.serdes_tbl_hbr2	= qmp_v3_dp_serdes_tbl_hbr2,
+	.serdes_tbl_hbr2_num	= ARRAY_SIZE(qmp_v3_dp_serdes_tbl_hbr2),
+	.serdes_tbl_hbr3	= qmp_v3_dp_serdes_tbl_hbr3,
+	.serdes_tbl_hbr3_num	= ARRAY_SIZE(qmp_v3_dp_serdes_tbl_hbr3),
+
+	.swing_hbr_rbr		= &qmp_dp_v3_voltage_swing_hbr_rbr,
+	.pre_emphasis_hbr_rbr	= &qmp_dp_v3_pre_emphasis_hbr_rbr,
+	.swing_hbr3_hbr2	= &qmp_dp_v3_voltage_swing_hbr3_hbr2,
+	.pre_emphasis_hbr3_hbr2 = &qmp_dp_v3_pre_emphasis_hbr3_hbr2,
+
+	.clk_list		= qmp_v3_phy_clk_l,
+	.num_clks		= ARRAY_SIZE(qmp_v3_phy_clk_l),
+	.reset_list		= msm8996_usb3phy_reset_l,
+	.num_resets		= ARRAY_SIZE(msm8996_usb3phy_reset_l),
+	.vreg_list		= qmp_phy_vreg_l,
+	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
+	.regs			= qmp_v3_usb3phy_regs_layout,
+
+	.dp_aux_init = qcom_qmp_v3_phy_dp_aux_init,
+	.configure_dp_tx = qcom_qmp_v3_phy_configure_dp_tx,
+	.configure_dp_phy = qcom_qmp_v3_phy_configure_dp_phy,
+	.calibrate_dp_phy = qcom_qmp_v3_dp_phy_calibrate,
+};
+
 static const struct qmp_phy_combo_cfg sdm845_usb3dpphy_cfg = {
 	.usb_cfg                = &sdm845_usb3phy_cfg,
-	.dp_cfg                 = &sc7180_dpphy_cfg,
+	.dp_cfg                 = &sdm845_dpphy_cfg,
 };
 
 static const struct qmp_phy_cfg sm8150_usb3phy_cfg = {
-- 
2.37.4