linux-kernel - [PATCH v1 1/2] phy: qcom-qmp-pcie: add x4 lane EP support for sa8775p

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Date:   Tue,  7 Nov 2023 18:34:52 +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, robh+dt@...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, quic_schintav@...cinc.com,
        quic_shijjose@...cinc.com,
        Mrinmay Sarkar <quic_msarkar@...cinc.com>,
        Vinod Koul <vkoul@...nel.org>,
        Kishon Vijay Abraham I <kishon@...nel.org>,
        linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-phy@...ts.infradead.org
Subject: [PATCH v1 1/2] phy: qcom-qmp-pcie: add x4 lane EP support for sa8775p

Add support for x4 lane end point mode PHY found on sa8755p platform.
Reusing existing serdes and pcs_misc table for EP and moved
BIAS_EN_CLKBUFLR_EN register from RC serdes table to common serdes
table as this register is part of both RC and EP.

Signed-off-by: Mrinmay Sarkar <quic_msarkar@...cinc.com>
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 9 ++++++++-
 1 file changed, 8 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index b64598a..7114b4e 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -2099,6 +2099,7 @@ static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x4_pcie_pcs_alt_tbl[] = {
 };
 
 static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x4_pcie_serdes_alt_tbl[] = {
+	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIAS_EN_CLKBUFLR_EN, 0x1c),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_IVCO, 0x0f),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE0, 0x36),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_PLL_CCTRL_MODE1, 0x36),
@@ -2125,7 +2126,6 @@ static const struct qmp_phy_init_tbl sa8775p_qmp_gen4x4_pcie_rc_serdes_alt_tbl[]
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE2_MODE0, 0x07),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE1_MODE1, 0x97),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_SSC_STEP_SIZE2_MODE1, 0x0c),
-	QMP_PHY_INIT_CFG(QSERDES_V5_COM_BIAS_EN_CLKBUFLR_EN, 0x1c),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CLK_ENABLE1, 0x90),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE0, 0x06),
 	QMP_PHY_INIT_CFG(QSERDES_V5_COM_CP_CTRL_MODE1, 0x06),
@@ -3114,6 +3114,13 @@ static const struct qmp_phy_cfg sa8775p_qmp_gen4x4_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),
+	},
+
 	.reset_list		= sdm845_pciephy_reset_l,
 	.num_resets		= ARRAY_SIZE(sdm845_pciephy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
-- 
2.7.4