linux-kernel - [PATCH v3] phy: qcom: qmp-pcie: Configure all tables on port B PHY

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Message-Id: <20240805-phy-qcom-qmp-pcie-write-all-tbls-second-port-v3-1-6967c6bf61d1@linaro.org>
Date: Mon, 05 Aug 2024 19:45:18 +0300
From: Abel Vesa <abel.vesa@...aro.org>
To: Vinod Koul <vkoul@...nel.org>, 
 Kishon Vijay Abraham I <kishon@...nel.org>
Cc: Johan Hovold <johan+linaro@...nel.org>, 
 Dmitry Baryshkov <dmitry.baryshkov@...aro.org>, 
 linux-arm-msm@...r.kernel.org, linux-phy@...ts.infradead.org, 
 linux-kernel@...r.kernel.org, Qiang Yu <quic_qianyu@...cinc.com>, 
 Abel Vesa <abel.vesa@...aro.org>
Subject: [PATCH v3] phy: qcom: qmp-pcie: Configure all tables on port B PHY

From: Qiang Yu <quic_qianyu@...cinc.com>

Currently, only the RX and TX tables are written to the second PHY
(port B) when the 4-lanes mode is configured, but according to Qualcomm
internal documentation, the pcs, pcs_misc, serdes and ln_shrd tables need
to be written as well.

Signed-off-by: Qiang Yu <quic_qianyu@...cinc.com>
Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@...aro.org>
Signed-off-by: Abel Vesa <abel.vesa@...aro.org>
---
Changes in v3:
- Rebased on phy/next
- Fetched Dmitry's R-b tag
- Link to v2: https://lore.kernel.org/r/20240801-phy-qcom-qmp-pcie-write-all-tbls-second-port-v2-1-6e53c701e87e@linaro.org

Changes in v2:
- Reordered tables as Johan has suggested
- Link to v1: https://lore.kernel.org/r/20240726-phy-qcom-qmp-pcie-write-all-tbls-second-port-v1-1-751b9ee01184@linaro.org
---
 drivers/phy/qualcomm/phy-qcom-qmp-pcie.c | 14 +++++++++++++-
 1 file changed, 13 insertions(+), 1 deletion(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
index 4b4a10f7f6d6..a7e2ce0c500d 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-pcie.c
@@ -3669,18 +3669,30 @@ static void qmp_pcie_init_port_b(struct qmp_pcie *qmp, const struct qmp_phy_cfg_
 {
 	const struct qmp_phy_cfg *cfg = qmp->cfg;
 	const struct qmp_pcie_offsets *offs = cfg->offsets;
-	void __iomem *tx3, *rx3, *tx4, *rx4;
+	void __iomem *serdes, *tx3, *rx3, *tx4, *rx4, *pcs, *pcs_misc, *ln_shrd;
 
+	serdes = qmp->port_b + offs->serdes;
 	tx3 = qmp->port_b + offs->tx;
 	rx3 = qmp->port_b + offs->rx;
 	tx4 = qmp->port_b + offs->tx2;
 	rx4 = qmp->port_b + offs->rx2;
+	pcs = qmp->port_b + offs->pcs;
+	pcs_misc = qmp->port_b + offs->pcs_misc;
+	ln_shrd = qmp->port_b + offs->ln_shrd;
+
+	qmp_configure(qmp->dev, serdes, tbls->serdes, tbls->serdes_num);
+	qmp_configure(qmp->dev, serdes, cfg->serdes_4ln_tbl, cfg->serdes_4ln_num);
 
 	qmp_configure_lane(qmp->dev, tx3, tbls->tx, tbls->tx_num, 1);
 	qmp_configure_lane(qmp->dev, rx3, tbls->rx, tbls->rx_num, 1);
 
 	qmp_configure_lane(qmp->dev, tx4, tbls->tx, tbls->tx_num, 2);
 	qmp_configure_lane(qmp->dev, rx4, tbls->rx, tbls->rx_num, 2);
+
+	qmp_configure(qmp->dev, pcs, tbls->pcs, tbls->pcs_num);
+	qmp_configure(qmp->dev, pcs_misc, tbls->pcs_misc, tbls->pcs_misc_num);
+
+	qmp_configure(qmp->dev, ln_shrd, tbls->ln_shrd, tbls->ln_shrd_num);
 }
 
 static void qmp_pcie_init_registers(struct qmp_pcie *qmp, const struct qmp_phy_cfg_tbls *tbls)

---
base-commit: d6dbc9f56c3a70e915625b6f1887882c23dc5c91
change-id: 20240725-phy-qcom-qmp-pcie-write-all-tbls-second-port-8efeced876bf

Best regards,
-- 
Abel Vesa <abel.vesa@...aro.org>