linux-kernel - [PATCH v9 2/4] phy: qcom-qmp-usb: add support for updated qcm2290 / sm6115 binding

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Date:   Tue,  2 May 2023 00:54:30 +0530
From:   Bhupesh Sharma <bhupesh.sharma@...aro.org>
To:     linux-arm-msm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-phy@...ts.infradead.org
Cc:     agross@...nel.org, linux-kernel@...r.kernel.org,
        andersson@...nel.org, bhupesh.sharma@...aro.org,
        bhupesh.linux@...il.com, krzysztof.kozlowski@...aro.org,
        robh+dt@...nel.org, konrad.dybcio@...aro.org, kishon@...nel.org,
        vkoul@...nel.org, krzysztof.kozlowski+dt@...aro.org
Subject: [PATCH v9 2/4] phy: qcom-qmp-usb: add support for updated qcm2290 / sm6115 binding

Add support for the new qcm2290 / sm6115 binding.

The USB QMP phy on these devices supports 2 lanes. Also note that the
binding now does not describe every register subregion and instead
the driver holds the corresponding offsets. This also includes
the PCS_MISC region.

Signed-off-by: Bhupesh Sharma <bhupesh.sharma@...aro.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index a49711c5a63d..aa143c081805 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1414,6 +1414,10 @@ struct qmp_usb_offsets {
 	u16 pcs_usb;
 	u16 tx;
 	u16 rx;
+	/* for PHYs with >= 2 lanes */
+	u16 tx2;
+	u16 rx2;
+	u16 pcs_misc;
 };
 
 /* struct qmp_phy_cfg - per-PHY initialization config */
@@ -1558,6 +1562,16 @@ static const char * const qmp_phy_vreg_l[] = {
 	"vdda-phy", "vdda-pll",
 };
 
+static const struct qmp_usb_offsets qmp_usb_offsets_v3 = {
+	.serdes		= 0,
+	.pcs		= 0xc00,
+	.tx		= 0x200,
+	.rx		= 0x400,
+	.tx2		= 0x600,
+	.rx2		= 0x800,
+	.pcs_misc	= 0xa00,
+};
+
 static const struct qmp_usb_offsets qmp_usb_offsets_v5 = {
 	.serdes		= 0,
 	.pcs		= 0x0200,
@@ -1922,6 +1936,8 @@ static const struct qmp_phy_cfg sm8350_usb3_uniphy_cfg = {
 static const struct qmp_phy_cfg qcm2290_usb3phy_cfg = {
 	.lanes			= 2,
 
+	.offsets		= &qmp_usb_offsets_v3,
+
 	.serdes_tbl		= qcm2290_usb3_serdes_tbl,
 	.serdes_tbl_num		= ARRAY_SIZE(qcm2290_usb3_serdes_tbl),
 	.tx_tbl			= qcm2290_usb3_tx_tbl,
@@ -2497,6 +2513,12 @@ static int qmp_usb_parse_dt(struct qmp_usb *qmp)
 	qmp->tx = base + offs->tx;
 	qmp->rx = base + offs->rx;
 
+	if (cfg->lanes >= 2) {
+		qmp->tx2 = base + offs->tx2;
+		qmp->rx2 = base + offs->rx2;
+		qmp->pcs_misc = base + offs->pcs_misc;
+	}
+
 	qmp->pipe_clk = devm_clk_get(dev, "pipe");
 	if (IS_ERR(qmp->pipe_clk)) {
 		return dev_err_probe(dev, PTR_ERR(qmp->pipe_clk),
-- 
2.38.1