linux-kernel - [PATCH v3 3/5] phy: qcom-qmp-pcie: add endpoint support for sa8775p

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Message-Id: <1697715430-30820-4-git-send-email-quic_msarkar@quicinc.com>
Date:   Thu, 19 Oct 2023 17:07:08 +0530
From:   Mrinmay Sarkar <quic_msarkar@...cinc.com>
To:     agross@...nel.org, andersson@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, conor+dt@...nel.org,
        konrad.dybcio@...aro.org, mani@...nel.org
Cc:     quic_shazhuss@...cinc.com, quic_nitegupt@...cinc.com,
        quic_ramkri@...cinc.com, quic_nayiluri@...cinc.com,
        dmitry.baryshkov@...aro.org, robh@...nel.org,
        quic_krichai@...cinc.com, quic_vbadigan@...cinc.com,
        quic_parass@...cinc.com, Mrinmay Sarkar <quic_msarkar@...cinc.com>,
        Lorenzo Pieralisi <lpieralisi@...nel.org>,
        Krzysztof Wilczyński <kw@...ux.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        Vinod Koul <vkoul@...nel.org>, linux-arm-msm@...r.kernel.org,
        linux-pci@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, mhi@...ts.linux.dev,
        linux-phy@...ts.infradead.org
Subject: [PATCH v3 3/5] phy: qcom-qmp-pcie: add endpoint support for sa8775p

Add support for dual lane end point mode PHY found on sa8755p platform.

Signed-off-by: Mrinmay Sarkar <quic_msarkar@...cinc.com>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c      | 37 +++++++++++++++++++++++++++
 drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5_20.h |  2 ++
 2 files changed, 39 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index a63ca74..b64598a 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -2147,6 +2147,34 @@ static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x4_pcie_rc_serdes_alt_tbl[]
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CLK_SELECT, 0x34),
 };
 
+static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BG_TIMER, 0x02),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYS_CLK_CTRL, 0x07),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE0, 0x27),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE1, 0x0a),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE0, 0x17),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_RCTRL_MODE1, 0x19),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE1, 0x03),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SYSCLK_EN_SEL, 0x00),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN0_MODE0, 0xfb),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN1_MODE0, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN0_MODE1, 0xfb),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_INTEGLOOP_GAIN1_MODE1, 0x01),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CMN_MODE, 0x14),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE0, 0xff),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE0, 0x04),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP1_MODE1, 0xff),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_LOCK_CMP2_MODE1, 0x09),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE0, 0x19),
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_DEC_START_MODE1, 0x28),
+};
+
+static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl[] = {
+	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_INSIG_MX_CTRL7, 0x00),
+	QMP_PHY_INIT_CFG(QPHY_V5_20_PCS_INSIG_SW_CTRL7, 0x00),
+};
+
 struct qmp_pcie_offsets {
 	u16 serdes;
 	u16 pcs;
@@ -3043,6 +3071,15 @@ static const struct qmp_phy_cfg sa8775p_qmp_gen4x2_pciephy_cfg = {
 		.pcs_misc_num	= ARRAY_SIZE(sa8775p_qmp_gen4_pcie_rc_pcs_misc_tbl),
 	},
 
+	.tbls_ep = &(const struct qmp_phy_cfg_tbls) {
+		.serdes		= sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl,
+		.serdes_num	= ARRAY_SIZE(sa8775p_qmp_gen4x2_pcie_ep_serdes_alt_tbl),
+		.pcs_misc	= sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl,
+		.pcs_misc_num	= ARRAY_SIZE(sm8450_qmp_gen4x2_pcie_ep_pcs_misc_tbl),
+		.pcs		= sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl,
+		.pcs_num	= ARRAY_SIZE(sa8775p_qmp_gen4x2_pcie_ep_pcs_alt_tbl),
+	},
+
 	.reset_list		= sdm845_pciephy_reset_l,
 	.num_resets		= ARRAY_SIZE(sdm845_pciephy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5_20.h b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5_20.h
index f0754b6..d3ad5b7 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5_20.h
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcs-v5_20.h
@@ -6,6 +6,8 @@
 #ifndef QCOM_PHY_QMP_PCS_V5_20_H_
 #define QCOM_PHY_QMP_PCS_V5_20_H_
 
+#define QPHY_V5_20_PCS_INSIG_SW_CTRL7			0x060
+#define QPHY_V5_20_PCS_INSIG_MX_CTRL7			0x07c
 #define QPHY_V5_20_PCS_G3S2_PRE_GAIN			0x170
 #define QPHY_V5_20_PCS_RX_SIGDET_LVL			0x188
 #define QPHY_V5_20_PCS_EQ_CONFIG2			0x1d8
-- 
2.7.4