linux-kernel - [PATCH v11 2/4] phy: qcom-qmp-usb: add support for updated qcm2290 / sm6115 binding

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Message-Id: <20230516150511.2346357-3-bhupesh.sharma@linaro.org>
Date:   Tue, 16 May 2023 20:35:09 +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,
        dmitry.baryshkov@...aro.org
Subject: [PATCH v11 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. Note that the
binding now does not describe every register subregion and instead
the driver holds the corresponding offsets.

While at it also include support for PCS_MISC region which was left
out earlier.

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 6f2798bbe513..466f0a56c82e 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1513,9 +1513,13 @@ static const struct qmp_phy_init_tbl sa8775p_usb3_uniphy_pcs_tbl[] = {
 struct qmp_usb_offsets {
 	u16 serdes;
 	u16 pcs;
+	u16 pcs_misc;
 	u16 pcs_usb;
 	u16 tx;
 	u16 rx;
+	/* for PHYs with >= 2 lanes */
+	u16 tx2;
+	u16 rx2;
 };
 
 /* struct qmp_phy_cfg - per-PHY initialization config */
@@ -1668,6 +1672,16 @@ static const struct qmp_usb_offsets qmp_usb_offsets_ipq9574 = {
 	.rx		= 0x400,
 };
 
+static const struct qmp_usb_offsets qmp_usb_offsets_v3 = {
+	.serdes		= 0,
+	.pcs		= 0xc00,
+	.pcs_misc	= 0xa00,
+	.tx		= 0x200,
+	.rx		= 0x400,
+	.tx2		= 0x600,
+	.rx2		= 0x800,
+};
+
 static const struct qmp_usb_offsets qmp_usb_offsets_v5 = {
 	.serdes		= 0,
 	.pcs		= 0x0200,
@@ -2076,6 +2090,8 @@ 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,
@@ -2647,10 +2663,16 @@ static int qmp_usb_parse_dt(struct qmp_usb *qmp)
 
 	qmp->serdes = base + offs->serdes;
 	qmp->pcs = base + offs->pcs;
+	qmp->pcs_misc = base + offs->pcs_misc;
 	qmp->pcs_usb = base + offs->pcs_usb;
 	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->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