linux-kernel - [PATCH 06/10] phy: qcom: ipq5332: Add support for g3x1 and g3x2 PCIe PHYs

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Message-ID: <20231214062847.2215542-7-quic_ipkumar@quicinc.com>
Date:   Thu, 14 Dec 2023 11:58:43 +0530
From:   Praveenkumar I <quic_ipkumar@...cinc.com>
To:     <agross@...nel.org>, <andersson@...nel.org>,
        <konrad.dybcio@...aro.org>, <mturquette@...libre.com>,
        <sboyd@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <bhelgaas@...gle.com>, <lpieralisi@...nel.org>, <kw@...ux.com>,
        <vkoul@...nel.org>, <kishon@...nel.org>, <mani@...nel.org>,
        <quic_nsekar@...cinc.com>, <quic_srichara@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-pci@...r.kernel.org>, <linux-phy@...ts.infradead.org>
CC:     <quic_varada@...cinc.com>, <quic_devipriy@...cinc.com>,
        <quic_kathirav@...cinc.com>, <quic_anusha@...cinc.com>
Subject: [PATCH 06/10] phy: qcom: ipq5332: Add support for g3x1 and g3x2 PCIe PHYs

Add support for single-lane and dual-lane PCIe UNIPHY found on
Qualcomm IPQ5332 platform. This UNIPHY is similar to the one
present in Qualcomm IPQ5018.

Signed-off-by: Praveenkumar I <quic_ipkumar@...cinc.com>
---
This patch depends on the below series which adds PCIe support in
Qualcomm IPQ5018
https://lore.kernel.org/all/20231003120846.28626-1-quic_nsekar@quicinc.com/

 .../phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c  | 44 +++++++++++++++++++
 1 file changed, 44 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c b/drivers/phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c
index 9f9a03faf6fa..aa71b85eb50e 100644
--- a/drivers/phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c
+++ b/drivers/phy/qualcomm/phy-qcom-uniphy-pcie-28lp.c
@@ -34,6 +34,10 @@
 #define SSCG_CTRL_REG_6		0xb0
 #define PCS_INTERNAL_CONTROL_2	0x2d8
 
+#define PHY_CFG_PLLCFG				0x220
+#define PHY_CFG_EIOS_DTCT_REG			0x3e4
+#define PHY_CFG_GEN3_ALIGN_HOLDOFF_TIME		0x3e8
+
 #define PHY_MODE_FIXED		0x1
 
 enum qcom_uniphy_pcie_type {
@@ -112,6 +116,21 @@ static const struct uniphy_regs ipq5018_regs[] = {
 	},
 };
 
+static const struct uniphy_regs ipq5332_regs[] = {
+	{
+		.offset = PHY_CFG_PLLCFG,
+		.val = 0x30,
+	},
+	{
+		.offset = PHY_CFG_EIOS_DTCT_REG,
+		.val = 0x53ef,
+	},
+	{
+		.offset = PHY_CFG_GEN3_ALIGN_HOLDOFF_TIME,
+		.val = 0xCf,
+	},
+};
+
 static const struct uniphy_pcie_data ipq5018_2x2_data = {
 	.lanes		= 2,
 	.lane_offset	= 0x800,
@@ -121,6 +140,23 @@ static const struct uniphy_pcie_data ipq5018_2x2_data = {
 	.pipe_clk_rate	= 125000000,
 };
 
+static const struct uniphy_pcie_data ipq5332_x2_data = {
+	.lanes		= 2,
+	.lane_offset	= 0x800,
+	.phy_type	= PHY_TYPE_PCIE_GEN3,
+	.init_seq	= ipq5332_regs,
+	.init_seq_num	= ARRAY_SIZE(ipq5332_regs),
+	.pipe_clk_rate	= 250000000,
+};
+
+static const struct uniphy_pcie_data ipq5332_x1_data = {
+	.lanes		= 1,
+	.phy_type	= PHY_TYPE_PCIE_GEN3,
+	.init_seq	= ipq5332_regs,
+	.init_seq_num	= ARRAY_SIZE(ipq5332_regs),
+	.pipe_clk_rate	= 250000000,
+};
+
 static void qcom_uniphy_pcie_init(struct qcom_uniphy_pcie *phy)
 {
 	const struct uniphy_pcie_data *data = phy->data;
@@ -270,6 +306,14 @@ static const struct of_device_id qcom_uniphy_pcie_id_table[] = {
 		.compatible = "qcom,ipq5018-uniphy-pcie-gen2x2",
 		.data = &ipq5018_2x2_data,
 	},
+	{
+		.compatible = "qcom,ipq5332-uniphy-pcie-gen3x2",
+		.data = &ipq5332_x2_data,
+	},
+	{
+		.compatible = "qcom,ipq5332-uniphy-pcie-gen3x1",
+		.data = &ipq5332_x1_data,
+	},
 	{ /* Sentinel */ },
 };
 MODULE_DEVICE_TABLE(of, qcom_uniphy_pcie_id_table);
-- 
2.34.1