[PATCH 00/13] phy: qcom-qmp-usb: fix sc8280xp binding

[PATCH 00/13] phy: qcom-qmp-usb: fix sc8280xp binding

[Johan Hovold]

This series fixes the USB PHY devicetree binding for SC8280XP and adds
support for the new updated binding to the driver.

The first half of the series clean up the driver in preparation for
supporting SC8280XP and its new binding that drops the legacy child node
and the (incomplete) description of register subregions.

The other QMP bindings suffer from similar problems and the PCIe and UFS
drivers are being fixed here:

        https://lore.kernel.org/lkml/20221021110947.28103-1-johan+linaro@kernel.org/
	https://lore.kernel.org/lkml/20221024090041.19574-1-johan+linaro@kernel.org/

and a follow-on series will do corresponding changes to the combo QMP
bindings and driver.

Note that these patches depend on the linux-phy next branch of today and
the following two series:

 1. [PATCH v2 00/14] phy: qcom-qmp: further prep cleanups

    https://lore.kernel.org/lkml/20221012081241.18273-1-johan+linaro@kernel.org

 2. [PATCH 00/20] phy: qcom-qmp: further prep fixes and cleanups (set 3)

    https://lore.kernel.org/lkml/20221012084846.24003-1-johan+linaro@kernel.org

Johan


Johan Hovold (13):
  phy: qcom-qmp-usb: fix sc8280xp PCS_USB offset
  phy: qcom-qmp-usb: sort device-id table
  phy: qcom-qmp-usb: move device-id table
  phy: qcom-qmp-usb: move pm ops
  phy: qcom-qmp-usb: merge driver data
  phy: qcom-qmp-usb: clean up device-tree parsing
  phy: qcom-qmp-usb: clean up probe initialisation
  phy: qcom-qmp-usb: rename PHY ops structure
  phy: qcom-qmp-usb: clean up PHY init
  dt-bindings: phy: qcom,qmp-usb: rename current bindings
  dt-bindings: phy: qcom,qmp-usb: fix sc8280xp binding
  phy: qcom-qmp-usb: restructure PHY creation
  phy: qcom-qmp-usb: add support for updated sc8280xp binding

 ...phy.yaml => qcom,msm8996-qmp-usb-phy.yaml} |  20 +-
 .../phy/qcom,sc8280xp-qmp-usb-phy.yaml        | 105 ++++
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c       | 532 +++++++++---------
 3 files changed, 368 insertions(+), 289 deletions(-)
 rename Documentation/devicetree/bindings/phy/{qcom,qmp-usb-phy.yaml => qcom,msm8996-qmp-usb-phy.yaml} (95%)
 create mode 100644 Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml

-- 
2.37.3

[PATCH 01/13] phy: qcom-qmp-usb: fix sc8280xp PCS_USB offset

[Johan Hovold]

The PCS_USB register block lives at an offset of 0x1000 from the PCS
region on SC8280XP so add the missing offset to avoid corrupting
unrelated registers on runtime suspend.

Note that the current binding is broken as it does not describe the
PCS_USB region and the PCS register size does not cover PCS_USB and the
regions in between. As Linux currently maps full pages, simply adding
the offset to driver works until the binding has been fixed.

Fixes: c0c7769cdae2 ("phy: qcom-qmp: Add SC8280XP USB3 UNI phy")
Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index d0c433197080..82af28f4a91b 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1682,6 +1682,7 @@ static const struct qmp_phy_cfg sc8280xp_usb3_uniphy_cfg = {
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v4_usb3phy_regs_layout,
+	.pcs_usb_offset		= 0x1000,
 };
 
 static const struct qmp_phy_cfg qmp_v3_usb3_uniphy_cfg = {
-- 
2.37.3

Re: [PATCH 01/13] phy: qcom-qmp-usb: fix sc8280xp PCS_USB offset

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> The PCS_USB register block lives at an offset of 0x1000 from the PCS
> region on SC8280XP so add the missing offset to avoid corrupting
> unrelated registers on runtime suspend.
> 
> Note that the current binding is broken as it does not describe the
> PCS_USB region and the PCS register size does not cover PCS_USB and the
> regions in between. As Linux currently maps full pages, simply adding
> the offset to driver works until the binding has been fixed.
> 
> Fixes: c0c7769cdae2 ("phy: qcom-qmp: Add SC8280XP USB3 UNI phy")
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 1 +
>   1 file changed, 1 insertion(+)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 02/13] phy: qcom-qmp-usb: sort device-id table

[Johan Hovold]

Sort the device-id table by compatible string to make it easier to find
and add new entries.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 26 ++++++++++++-------------
 1 file changed, 13 insertions(+), 13 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index 82af28f4a91b..41a4548f3f99 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2503,14 +2503,20 @@ int qmp_usb_create(struct device *dev, struct device_node *np, int id,
 
 static const struct of_device_id qmp_usb_of_match_table[] = {
 	{
+		.compatible = "qcom,ipq6018-qmp-usb3-phy",
+		.data = &ipq8074_usb3phy_cfg,
+	}, {
 		.compatible = "qcom,ipq8074-qmp-usb3-phy",
 		.data = &ipq8074_usb3phy_cfg,
 	}, {
 		.compatible = "qcom,msm8996-qmp-usb3-phy",
 		.data = &msm8996_usb3phy_cfg,
 	}, {
-		.compatible = "qcom,ipq6018-qmp-usb3-phy",
-		.data = &ipq8074_usb3phy_cfg,
+		.compatible = "qcom,msm8998-qmp-usb3-phy",
+		.data = &msm8998_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,qcm2290-qmp-usb3-phy",
+		.data = &qcm2290_usb3phy_cfg,
 	}, {
 		.compatible = "qcom,sc7180-qmp-usb3-phy",
 		.data = &sc7180_usb3phy_cfg,
@@ -2527,8 +2533,11 @@ static const struct of_device_id qmp_usb_of_match_table[] = {
 		.compatible = "qcom,sdm845-qmp-usb3-uni-phy",
 		.data = &qmp_v3_usb3_uniphy_cfg,
 	}, {
-		.compatible = "qcom,msm8998-qmp-usb3-phy",
-		.data = &msm8998_usb3phy_cfg,
+		.compatible = "qcom,sdx55-qmp-usb3-uni-phy",
+		.data = &sdx55_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sdx65-qmp-usb3-uni-phy",
+		.data = &sdx65_usb3_uniphy_cfg,
 	}, {
 		.compatible = "qcom,sm8150-qmp-usb3-phy",
 		.data = &sm8150_usb3phy_cfg,
@@ -2541,12 +2550,6 @@ static const struct of_device_id qmp_usb_of_match_table[] = {
 	}, {
 		.compatible = "qcom,sm8250-qmp-usb3-uni-phy",
 		.data = &sm8250_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sdx55-qmp-usb3-uni-phy",
-		.data = &sdx55_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sdx65-qmp-usb3-uni-phy",
-		.data = &sdx65_usb3_uniphy_cfg,
 	}, {
 		.compatible = "qcom,sm8350-qmp-usb3-phy",
 		.data = &sm8350_usb3phy_cfg,
@@ -2556,9 +2559,6 @@ static const struct of_device_id qmp_usb_of_match_table[] = {
 	}, {
 		.compatible = "qcom,sm8450-qmp-usb3-phy",
 		.data = &sm8350_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,qcm2290-qmp-usb3-phy",
-		.data = &qcm2290_usb3phy_cfg,
 	},
 	{ },
 };
-- 
2.37.3

Re: [PATCH 02/13] phy: qcom-qmp-usb: sort device-id table

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Sort the device-id table by compatible string to make it easier to find
> and add new entries.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 26 ++++++++++++-------------
>   1 file changed, 13 insertions(+), 13 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 03/13] phy: qcom-qmp-usb: move device-id table

[Johan Hovold]

Move the device-id table below probe() and next to the driver structure
to keep the driver callback functions grouped together.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 126 ++++++++++++------------
 1 file changed, 63 insertions(+), 63 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index 41a4548f3f99..4591128743c7 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2501,69 +2501,6 @@ int qmp_usb_create(struct device *dev, struct device_node *np, int id,
 	return 0;
 }
 
-static const struct of_device_id qmp_usb_of_match_table[] = {
-	{
-		.compatible = "qcom,ipq6018-qmp-usb3-phy",
-		.data = &ipq8074_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,ipq8074-qmp-usb3-phy",
-		.data = &ipq8074_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,msm8996-qmp-usb3-phy",
-		.data = &msm8996_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,msm8998-qmp-usb3-phy",
-		.data = &msm8998_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,qcm2290-qmp-usb3-phy",
-		.data = &qcm2290_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,sc7180-qmp-usb3-phy",
-		.data = &sc7180_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,sc8180x-qmp-usb3-phy",
-		.data = &sm8150_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,sc8280xp-qmp-usb3-uni-phy",
-		.data = &sc8280xp_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sdm845-qmp-usb3-phy",
-		.data = &qmp_v3_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,sdm845-qmp-usb3-uni-phy",
-		.data = &qmp_v3_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sdx55-qmp-usb3-uni-phy",
-		.data = &sdx55_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sdx65-qmp-usb3-uni-phy",
-		.data = &sdx65_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sm8150-qmp-usb3-phy",
-		.data = &sm8150_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,sm8150-qmp-usb3-uni-phy",
-		.data = &sm8150_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sm8250-qmp-usb3-phy",
-		.data = &sm8250_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,sm8250-qmp-usb3-uni-phy",
-		.data = &sm8250_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sm8350-qmp-usb3-phy",
-		.data = &sm8350_usb3phy_cfg,
-	}, {
-		.compatible = "qcom,sm8350-qmp-usb3-uni-phy",
-		.data = &sm8350_usb3_uniphy_cfg,
-	}, {
-		.compatible = "qcom,sm8450-qmp-usb3-phy",
-		.data = &sm8350_usb3phy_cfg,
-	},
-	{ },
-};
-MODULE_DEVICE_TABLE(of, qmp_usb_of_match_table);
-
 static const struct dev_pm_ops qmp_usb_pm_ops = {
 	SET_RUNTIME_PM_OPS(qmp_usb_runtime_suspend,
 			   qmp_usb_runtime_resume, NULL)
@@ -2665,6 +2602,69 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	return ret;
 }
 
+static const struct of_device_id qmp_usb_of_match_table[] = {
+	{
+		.compatible = "qcom,ipq6018-qmp-usb3-phy",
+		.data = &ipq8074_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,ipq8074-qmp-usb3-phy",
+		.data = &ipq8074_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,msm8996-qmp-usb3-phy",
+		.data = &msm8996_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,msm8998-qmp-usb3-phy",
+		.data = &msm8998_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,qcm2290-qmp-usb3-phy",
+		.data = &qcm2290_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,sc7180-qmp-usb3-phy",
+		.data = &sc7180_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,sc8180x-qmp-usb3-phy",
+		.data = &sm8150_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,sc8280xp-qmp-usb3-uni-phy",
+		.data = &sc8280xp_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sdm845-qmp-usb3-phy",
+		.data = &qmp_v3_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,sdm845-qmp-usb3-uni-phy",
+		.data = &qmp_v3_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sdx55-qmp-usb3-uni-phy",
+		.data = &sdx55_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sdx65-qmp-usb3-uni-phy",
+		.data = &sdx65_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sm8150-qmp-usb3-phy",
+		.data = &sm8150_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,sm8150-qmp-usb3-uni-phy",
+		.data = &sm8150_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sm8250-qmp-usb3-phy",
+		.data = &sm8250_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,sm8250-qmp-usb3-uni-phy",
+		.data = &sm8250_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sm8350-qmp-usb3-phy",
+		.data = &sm8350_usb3phy_cfg,
+	}, {
+		.compatible = "qcom,sm8350-qmp-usb3-uni-phy",
+		.data = &sm8350_usb3_uniphy_cfg,
+	}, {
+		.compatible = "qcom,sm8450-qmp-usb3-phy",
+		.data = &sm8350_usb3phy_cfg,
+	},
+	{ },
+};
+MODULE_DEVICE_TABLE(of, qmp_usb_of_match_table);
+
 static struct platform_driver qmp_usb_driver = {
 	.probe		= qmp_usb_probe,
 	.driver = {
-- 
2.37.3

Re: [PATCH 03/13] phy: qcom-qmp-usb: move device-id table

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Move the device-id table below probe() and next to the driver structure
> to keep the driver callback functions grouped together.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 126 ++++++++++++------------
>   1 file changed, 63 insertions(+), 63 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 04/13] phy: qcom-qmp-usb: move pm ops

[Johan Hovold]

Move the PM ops structure next to the implementation to keep the driver
callbacks grouped.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index 4591128743c7..f28883e0d21e 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2280,6 +2280,11 @@ static int __maybe_unused qmp_usb_runtime_resume(struct device *dev)
 	return 0;
 }
 
+static const struct dev_pm_ops qmp_usb_pm_ops = {
+	SET_RUNTIME_PM_OPS(qmp_usb_runtime_suspend,
+			   qmp_usb_runtime_resume, NULL)
+};
+
 static int qmp_usb_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 {
 	struct qcom_qmp *qmp = dev_get_drvdata(dev);
@@ -2501,11 +2506,6 @@ int qmp_usb_create(struct device *dev, struct device_node *np, int id,
 	return 0;
 }
 
-static const struct dev_pm_ops qmp_usb_pm_ops = {
-	SET_RUNTIME_PM_OPS(qmp_usb_runtime_suspend,
-			   qmp_usb_runtime_resume, NULL)
-};
-
 static int qmp_usb_probe(struct platform_device *pdev)
 {
 	struct qcom_qmp *qmp;
-- 
2.37.3

Re: [PATCH 04/13] phy: qcom-qmp-usb: move pm ops

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Move the PM ops structure next to the implementation to keep the driver
> callbacks grouped.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 10 +++++-----
>   1 file changed, 5 insertions(+), 5 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 05/13] phy: qcom-qmp-usb: merge driver data

[Johan Hovold]

The USB QMP PHY driver only manages a single PHY so merge the old
qcom_qmp and qmp_phy structures and drop the PHY array.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 239 ++++++++++--------------
 1 file changed, 96 insertions(+), 143 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index f28883e0d21e..e009d63260e7 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1453,60 +1453,30 @@ struct qmp_phy_cfg {
 	unsigned int pcs_usb_offset;
 };
 
-/**
- * struct qmp_phy - per-lane phy descriptor
- *
- * @phy: generic phy
- * @cfg: phy specific configuration
- * @serdes: iomapped memory space for phy's serdes (i.e. PLL)
- * @tx: iomapped memory space for lane's tx
- * @rx: iomapped memory space for lane's rx
- * @pcs: iomapped memory space for lane's pcs
- * @tx2: iomapped memory space for second lane's tx (in dual lane PHYs)
- * @rx2: iomapped memory space for second lane's rx (in dual lane PHYs)
- * @pcs_misc: iomapped memory space for lane's pcs_misc
- * @pcs_usb: iomapped memory space for lane's pcs_usb
- * @pipe_clk: pipe clock
- * @qmp: QMP phy to which this lane belongs
- * @mode: current PHY mode
- */
-struct qmp_phy {
-	struct phy *phy;
+struct qmp_usb {
+	struct device *dev;
+
 	const struct qmp_phy_cfg *cfg;
+
 	void __iomem *serdes;
+	void __iomem *pcs;
+	void __iomem *pcs_misc;
+	void __iomem *pcs_usb;
 	void __iomem *tx;
 	void __iomem *rx;
-	void __iomem *pcs;
 	void __iomem *tx2;
 	void __iomem *rx2;
-	void __iomem *pcs_misc;
-	void __iomem *pcs_usb;
-	struct clk *pipe_clk;
-	struct qcom_qmp *qmp;
-	enum phy_mode mode;
-};
 
-/**
- * struct qcom_qmp - structure holding QMP phy block attributes
- *
- * @dev: device
- * @dp_com: iomapped memory space for phy's dp_com control block
- *
- * @clks: array of clocks required by phy
- * @resets: array of resets required by phy
- * @vregs: regulator supplies bulk data
- *
- * @phys: array of per-lane phy descriptors
- */
-struct qcom_qmp {
-	struct device *dev;
 	void __iomem *dp_com;
 
+	struct clk *pipe_clk;
 	struct clk_bulk_data *clks;
 	struct reset_control_bulk_data *resets;
 	struct regulator_bulk_data *vregs;
 
-	struct qmp_phy **phys;
+	enum phy_mode mode;
+
+	struct phy *phy;
 };
 
 static inline void qphy_setbits(void __iomem *base, u32 offset, u32 val)
@@ -1976,10 +1946,10 @@ static void qmp_usb_configure(void __iomem *base,
 	qmp_usb_configure_lane(base, tbl, num, 0xff);
 }
 
-static int qmp_usb_serdes_init(struct qmp_phy *qphy)
+static int qmp_usb_serdes_init(struct qmp_usb *qmp)
 {
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
-	void __iomem *serdes = qphy->serdes;
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	void __iomem *serdes = qmp->serdes;
 	const struct qmp_phy_init_tbl *serdes_tbl = cfg->serdes_tbl;
 	int serdes_tbl_num = cfg->serdes_tbl_num;
 
@@ -1990,10 +1960,9 @@ static int qmp_usb_serdes_init(struct qmp_phy *qphy)
 
 static int qmp_usb_init(struct phy *phy)
 {
-	struct qmp_phy *qphy = phy_get_drvdata(phy);
-	struct qcom_qmp *qmp = qphy->qmp;
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
-	void __iomem *pcs = qphy->pcs;
+	struct qmp_usb *qmp = phy_get_drvdata(phy);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	void __iomem *pcs = qmp->pcs;
 	void __iomem *dp_com = qmp->dp_com;
 	int ret;
 
@@ -2056,9 +2025,8 @@ static int qmp_usb_init(struct phy *phy)
 
 static int qmp_usb_exit(struct phy *phy)
 {
-	struct qmp_phy *qphy = phy_get_drvdata(phy);
-	struct qcom_qmp *qmp = qphy->qmp;
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
+	struct qmp_usb *qmp = phy_get_drvdata(phy);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
 
 	reset_control_bulk_assert(cfg->num_resets, qmp->resets);
 
@@ -2071,19 +2039,18 @@ static int qmp_usb_exit(struct phy *phy)
 
 static int qmp_usb_power_on(struct phy *phy)
 {
-	struct qmp_phy *qphy = phy_get_drvdata(phy);
-	struct qcom_qmp *qmp = qphy->qmp;
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
-	void __iomem *tx = qphy->tx;
-	void __iomem *rx = qphy->rx;
-	void __iomem *pcs = qphy->pcs;
+	struct qmp_usb *qmp = phy_get_drvdata(phy);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	void __iomem *tx = qmp->tx;
+	void __iomem *rx = qmp->rx;
+	void __iomem *pcs = qmp->pcs;
 	void __iomem *status;
 	unsigned int val;
 	int ret;
 
-	qmp_usb_serdes_init(qphy);
+	qmp_usb_serdes_init(qmp);
 
-	ret = clk_prepare_enable(qphy->pipe_clk);
+	ret = clk_prepare_enable(qmp->pipe_clk);
 	if (ret) {
 		dev_err(qmp->dev, "pipe_clk enable failed err=%d\n", ret);
 		return ret;
@@ -2093,12 +2060,12 @@ static int qmp_usb_power_on(struct phy *phy)
 	qmp_usb_configure_lane(tx, cfg->tx_tbl, cfg->tx_tbl_num, 1);
 
 	if (cfg->lanes >= 2)
-		qmp_usb_configure_lane(qphy->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);
+		qmp_usb_configure_lane(qmp->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);
 
 	qmp_usb_configure_lane(rx, cfg->rx_tbl, cfg->rx_tbl_num, 1);
 
 	if (cfg->lanes >= 2)
-		qmp_usb_configure_lane(qphy->rx2, cfg->rx_tbl, cfg->rx_tbl_num, 2);
+		qmp_usb_configure_lane(qmp->rx2, cfg->rx_tbl, cfg->rx_tbl_num, 2);
 
 	qmp_usb_configure(pcs, cfg->pcs_tbl, cfg->pcs_tbl_num);
 
@@ -2122,27 +2089,27 @@ static int qmp_usb_power_on(struct phy *phy)
 	return 0;
 
 err_disable_pipe_clk:
-	clk_disable_unprepare(qphy->pipe_clk);
+	clk_disable_unprepare(qmp->pipe_clk);
 
 	return ret;
 }
 
 static int qmp_usb_power_off(struct phy *phy)
 {
-	struct qmp_phy *qphy = phy_get_drvdata(phy);
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
+	struct qmp_usb *qmp = phy_get_drvdata(phy);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
 
-	clk_disable_unprepare(qphy->pipe_clk);
+	clk_disable_unprepare(qmp->pipe_clk);
 
 	/* PHY reset */
-	qphy_setbits(qphy->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
+	qphy_setbits(qmp->pcs, cfg->regs[QPHY_SW_RESET], SW_RESET);
 
 	/* stop SerDes and Phy-Coding-Sublayer */
-	qphy_clrbits(qphy->pcs, cfg->regs[QPHY_START_CTRL],
+	qphy_clrbits(qmp->pcs, cfg->regs[QPHY_START_CTRL],
 			SERDES_START | PCS_START);
 
 	/* Put PHY into POWER DOWN state: active low */
-	qphy_clrbits(qphy->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
+	qphy_clrbits(qmp->pcs, cfg->regs[QPHY_PCS_POWER_DOWN_CONTROL],
 			SW_PWRDN);
 
 	return 0;
@@ -2175,22 +2142,22 @@ static int qmp_usb_disable(struct phy *phy)
 
 static int qmp_usb_set_mode(struct phy *phy, enum phy_mode mode, int submode)
 {
-	struct qmp_phy *qphy = phy_get_drvdata(phy);
+	struct qmp_usb *qmp = phy_get_drvdata(phy);
 
-	qphy->mode = mode;
+	qmp->mode = mode;
 
 	return 0;
 }
 
-static void qmp_usb_enable_autonomous_mode(struct qmp_phy *qphy)
+static void qmp_usb_enable_autonomous_mode(struct qmp_usb *qmp)
 {
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
-	void __iomem *pcs_usb = qphy->pcs_usb ?: qphy->pcs;
-	void __iomem *pcs_misc = qphy->pcs_misc;
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	void __iomem *pcs_usb = qmp->pcs_usb ?: qmp->pcs;
+	void __iomem *pcs_misc = qmp->pcs_misc;
 	u32 intr_mask;
 
-	if (qphy->mode == PHY_MODE_USB_HOST_SS ||
-	    qphy->mode == PHY_MODE_USB_DEVICE_SS)
+	if (qmp->mode == PHY_MODE_USB_HOST_SS ||
+	    qmp->mode == PHY_MODE_USB_DEVICE_SS)
 		intr_mask = ARCVR_DTCT_EN | ALFPS_DTCT_EN;
 	else
 		intr_mask = ARCVR_DTCT_EN | ARCVR_DTCT_EVENT_SEL;
@@ -2211,11 +2178,11 @@ static void qmp_usb_enable_autonomous_mode(struct qmp_phy *qphy)
 		qphy_clrbits(pcs_misc, QPHY_V3_PCS_MISC_CLAMP_ENABLE, CLAMP_EN);
 }
 
-static void qmp_usb_disable_autonomous_mode(struct qmp_phy *qphy)
+static void qmp_usb_disable_autonomous_mode(struct qmp_usb *qmp)
 {
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
-	void __iomem *pcs_usb = qphy->pcs_usb ?: qphy->pcs;
-	void __iomem *pcs_misc = qphy->pcs_misc;
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	void __iomem *pcs_usb = qmp->pcs_usb ?: qmp->pcs;
+	void __iomem *pcs_misc = qmp->pcs_misc;
 
 	/* Disable i/o clamp_n on resume for normal mode */
 	if (pcs_misc)
@@ -2231,20 +2198,19 @@ static void qmp_usb_disable_autonomous_mode(struct qmp_phy *qphy)
 
 static int __maybe_unused qmp_usb_runtime_suspend(struct device *dev)
 {
-	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
+	struct qmp_usb *qmp = dev_get_drvdata(dev);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
 
-	dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qphy->mode);
+	dev_vdbg(dev, "Suspending QMP phy, mode:%d\n", qmp->mode);
 
-	if (!qphy->phy->init_count) {
+	if (!qmp->phy->init_count) {
 		dev_vdbg(dev, "PHY not initialized, bailing out\n");
 		return 0;
 	}
 
-	qmp_usb_enable_autonomous_mode(qphy);
+	qmp_usb_enable_autonomous_mode(qmp);
 
-	clk_disable_unprepare(qphy->pipe_clk);
+	clk_disable_unprepare(qmp->pipe_clk);
 	clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
 
 	return 0;
@@ -2252,14 +2218,13 @@ static int __maybe_unused qmp_usb_runtime_suspend(struct device *dev)
 
 static int __maybe_unused qmp_usb_runtime_resume(struct device *dev)
 {
-	struct qcom_qmp *qmp = dev_get_drvdata(dev);
-	struct qmp_phy *qphy = qmp->phys[0];
-	const struct qmp_phy_cfg *cfg = qphy->cfg;
+	struct qmp_usb *qmp = dev_get_drvdata(dev);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
 	int ret = 0;
 
-	dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qphy->mode);
+	dev_vdbg(dev, "Resuming QMP phy, mode:%d\n", qmp->mode);
 
-	if (!qphy->phy->init_count) {
+	if (!qmp->phy->init_count) {
 		dev_vdbg(dev, "PHY not initialized, bailing out\n");
 		return 0;
 	}
@@ -2268,14 +2233,14 @@ static int __maybe_unused qmp_usb_runtime_resume(struct device *dev)
 	if (ret)
 		return ret;
 
-	ret = clk_prepare_enable(qphy->pipe_clk);
+	ret = clk_prepare_enable(qmp->pipe_clk);
 	if (ret) {
 		dev_err(dev, "pipe_clk enable failed, err=%d\n", ret);
 		clk_bulk_disable_unprepare(cfg->num_clks, qmp->clks);
 		return ret;
 	}
 
-	qmp_usb_disable_autonomous_mode(qphy);
+	qmp_usb_disable_autonomous_mode(qmp);
 
 	return 0;
 }
@@ -2287,7 +2252,7 @@ static const struct dev_pm_ops qmp_usb_pm_ops = {
 
 static int qmp_usb_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 {
-	struct qcom_qmp *qmp = dev_get_drvdata(dev);
+	struct qmp_usb *qmp = dev_get_drvdata(dev);
 	int num = cfg->num_vregs;
 	int i;
 
@@ -2303,7 +2268,7 @@ static int qmp_usb_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 
 static int qmp_usb_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 {
-	struct qcom_qmp *qmp = dev_get_drvdata(dev);
+	struct qmp_usb *qmp = dev_get_drvdata(dev);
 	int i;
 	int ret;
 
@@ -2324,7 +2289,7 @@ static int qmp_usb_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 
 static int qmp_usb_clk_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 {
-	struct qcom_qmp *qmp = dev_get_drvdata(dev);
+	struct qmp_usb *qmp = dev_get_drvdata(dev);
 	int num = cfg->num_clks;
 	int i;
 
@@ -2361,7 +2326,7 @@ static void phy_clk_release_provider(void *res)
  *    clk  |   +-------+   |                   +-----+
  *         +---------------+
  */
-static int phy_pipe_clk_register(struct qcom_qmp *qmp, struct device_node *np)
+static int phy_pipe_clk_register(struct qmp_usb *qmp, struct device_node *np)
 {
 	struct clk_fixed_rate *fixed;
 	struct clk_init_data init = { };
@@ -2420,13 +2385,11 @@ static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np,
 	return devm_of_iomap(dev, np, index, NULL);
 }
 
-static
-int qmp_usb_create(struct device *dev, struct device_node *np, int id,
+static int qmp_usb_create(struct device *dev, struct device_node *np,
 			void __iomem *serdes, const struct qmp_phy_cfg *cfg)
 {
-	struct qcom_qmp *qmp = dev_get_drvdata(dev);
+	struct qmp_usb *qmp = dev_get_drvdata(dev);
 	struct phy *generic_phy;
-	struct qmp_phy *qphy;
 	bool exclusive = true;
 	int ret;
 
@@ -2439,81 +2402,75 @@ int qmp_usb_create(struct device *dev, struct device_node *np, int id,
 	if (of_device_is_compatible(dev->of_node, "qcom,sm8350-qmp-usb3-uni-phy"))
 		exclusive = false;
 
-	qphy = devm_kzalloc(dev, sizeof(*qphy), GFP_KERNEL);
-	if (!qphy)
-		return -ENOMEM;
-
-	qphy->cfg = cfg;
-	qphy->serdes = serdes;
+	qmp->cfg = cfg;
+	qmp->serdes = serdes;
 	/*
 	 * Get memory resources for the PHY:
 	 * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2.
 	 * For dual lane PHYs: tx2 -> 3, rx2 -> 4, pcs_misc (optional) -> 5
 	 * For single lane PHYs: pcs_misc (optional) -> 3.
 	 */
-	qphy->tx = devm_of_iomap(dev, np, 0, NULL);
-	if (IS_ERR(qphy->tx))
-		return PTR_ERR(qphy->tx);
+	qmp->tx = devm_of_iomap(dev, np, 0, NULL);
+	if (IS_ERR(qmp->tx))
+		return PTR_ERR(qmp->tx);
 
-	qphy->rx = devm_of_iomap(dev, np, 1, NULL);
-	if (IS_ERR(qphy->rx))
-		return PTR_ERR(qphy->rx);
+	qmp->rx = devm_of_iomap(dev, np, 1, NULL);
+	if (IS_ERR(qmp->rx))
+		return PTR_ERR(qmp->rx);
 
-	qphy->pcs = qmp_usb_iomap(dev, np, 2, exclusive);
-	if (IS_ERR(qphy->pcs))
-		return PTR_ERR(qphy->pcs);
+	qmp->pcs = qmp_usb_iomap(dev, np, 2, exclusive);
+	if (IS_ERR(qmp->pcs))
+		return PTR_ERR(qmp->pcs);
 
 	if (cfg->pcs_usb_offset)
-		qphy->pcs_usb = qphy->pcs + cfg->pcs_usb_offset;
+		qmp->pcs_usb = qmp->pcs + cfg->pcs_usb_offset;
 
 	if (cfg->lanes >= 2) {
-		qphy->tx2 = devm_of_iomap(dev, np, 3, NULL);
-		if (IS_ERR(qphy->tx2))
-			return PTR_ERR(qphy->tx2);
+		qmp->tx2 = devm_of_iomap(dev, np, 3, NULL);
+		if (IS_ERR(qmp->tx2))
+			return PTR_ERR(qmp->tx2);
 
-		qphy->rx2 = devm_of_iomap(dev, np, 4, NULL);
-		if (IS_ERR(qphy->rx2))
-			return PTR_ERR(qphy->rx2);
+		qmp->rx2 = devm_of_iomap(dev, np, 4, NULL);
+		if (IS_ERR(qmp->rx2))
+			return PTR_ERR(qmp->rx2);
 
-		qphy->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
+		qmp->pcs_misc = devm_of_iomap(dev, np, 5, NULL);
 	} else {
-		qphy->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
+		qmp->pcs_misc = devm_of_iomap(dev, np, 3, NULL);
 	}
 
-	if (IS_ERR(qphy->pcs_misc)) {
+	if (IS_ERR(qmp->pcs_misc)) {
 		dev_vdbg(dev, "PHY pcs_misc-reg not used\n");
-		qphy->pcs_misc = NULL;
+		qmp->pcs_misc = NULL;
 	}
 
-	qphy->pipe_clk = devm_get_clk_from_child(dev, np, NULL);
-	if (IS_ERR(qphy->pipe_clk)) {
-		return dev_err_probe(dev, PTR_ERR(qphy->pipe_clk),
-				     "failed to get lane%d pipe clock\n", id);
+	qmp->pipe_clk = devm_get_clk_from_child(dev, np, NULL);
+	if (IS_ERR(qmp->pipe_clk)) {
+		return dev_err_probe(dev, PTR_ERR(qmp->pipe_clk),
+				     "failed to get pipe clock\n");
 	}
 
 	generic_phy = devm_phy_create(dev, np, &qmp_usb_ops);
 	if (IS_ERR(generic_phy)) {
 		ret = PTR_ERR(generic_phy);
-		dev_err(dev, "failed to create qphy %d\n", ret);
+		dev_err(dev, "failed to create PHY: %d\n", ret);
 		return ret;
 	}
 
-	qphy->phy = generic_phy;
-	qphy->qmp = qmp;
-	qmp->phys[id] = qphy;
-	phy_set_drvdata(generic_phy, qphy);
+	qmp->phy = generic_phy;
+	phy_set_drvdata(generic_phy, qmp);
 
 	return 0;
 }
 
 static int qmp_usb_probe(struct platform_device *pdev)
 {
-	struct qcom_qmp *qmp;
 	struct device *dev = &pdev->dev;
 	struct device_node *child;
 	struct phy_provider *phy_provider;
 	void __iomem *serdes;
 	const struct qmp_phy_cfg *cfg = NULL;
+	struct qmp_usb *qmp;
 	int num, id;
 	int ret;
 
@@ -2555,10 +2512,6 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	if (num > 1)
 		return -EINVAL;
 
-	qmp->phys = devm_kcalloc(dev, num, sizeof(*qmp->phys), GFP_KERNEL);
-	if (!qmp->phys)
-		return -ENOMEM;
-
 	pm_runtime_set_active(dev);
 	ret = devm_pm_runtime_enable(dev);
 	if (ret)
@@ -2572,7 +2525,7 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	id = 0;
 	for_each_available_child_of_node(dev->of_node, child) {
 		/* Create per-lane phy */
-		ret = qmp_usb_create(dev, child, id, serdes, cfg);
+		ret = qmp_usb_create(dev, child, serdes, cfg);
 		if (ret) {
 			dev_err(dev, "failed to create lane%d phy, %d\n",
 				id, ret);
-- 
2.37.3

Re: [PATCH 05/13] phy: qcom-qmp-usb: merge driver data

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> The USB QMP PHY driver only manages a single PHY so merge the old
> qcom_qmp and qmp_phy structures and drop the PHY array.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 239 ++++++++++--------------
>   1 file changed, 96 insertions(+), 143 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 06/13] phy: qcom-qmp-usb: clean up device-tree parsing

[Johan Hovold]

Since the QMP driver split there will be at most a single child node so
drop the obsolete iteration construct.

While at it, drop the verbose error logging that would have been
printed also on probe deferrals.

Note that there's no need to check if there are additional child nodes
(the kernel is not a devicetree validator), but let's return an error if
there are no child nodes at all for now.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 40 ++++++++-----------------
 1 file changed, 12 insertions(+), 28 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index e009d63260e7..ccb834a08d5b 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2471,7 +2471,6 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	void __iomem *serdes;
 	const struct qmp_phy_cfg *cfg = NULL;
 	struct qmp_usb *qmp;
-	int num, id;
 	int ret;
 
 	qmp = devm_kzalloc(dev, sizeof(*qmp), GFP_KERNEL);
@@ -2507,44 +2506,29 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	num = of_get_available_child_count(dev->of_node);
-	/* do we have a rogue child node ? */
-	if (num > 1)
+	child = of_get_next_available_child(dev->of_node, NULL);
+	if (!child)
 		return -EINVAL;
 
 	pm_runtime_set_active(dev);
 	ret = devm_pm_runtime_enable(dev);
 	if (ret)
-		return ret;
+		goto err_node_put;
 	/*
 	 * Prevent runtime pm from being ON by default. Users can enable
 	 * it using power/control in sysfs.
 	 */
 	pm_runtime_forbid(dev);
 
-	id = 0;
-	for_each_available_child_of_node(dev->of_node, child) {
-		/* Create per-lane phy */
-		ret = qmp_usb_create(dev, child, serdes, cfg);
-		if (ret) {
-			dev_err(dev, "failed to create lane%d phy, %d\n",
-				id, ret);
-			goto err_node_put;
-		}
-
-		/*
-		 * Register the pipe clock provided by phy.
-		 * See function description to see details of this pipe clock.
-		 */
-		ret = phy_pipe_clk_register(qmp, child);
-		if (ret) {
-			dev_err(qmp->dev,
-				"failed to register pipe clock source\n");
-			goto err_node_put;
-		}
-
-		id++;
-	}
+	ret = qmp_usb_create(dev, child, serdes, cfg);
+	if (ret)
+		goto err_node_put;
+
+	ret = phy_pipe_clk_register(qmp, child);
+	if (ret)
+		goto err_node_put;
+
+	of_node_put(child);
 
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 
-- 
2.37.3

Re: [PATCH 06/13] phy: qcom-qmp-usb: clean up device-tree parsing

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Since the QMP driver split there will be at most a single child node so
> drop the obsolete iteration construct.
> 
> While at it, drop the verbose error logging that would have been
> printed also on probe deferrals.
> 
> Note that there's no need to check if there are additional child nodes
> (the kernel is not a devicetree validator), but let's return an error if
> there are no child nodes at all for now.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 40 ++++++++-----------------
>   1 file changed, 12 insertions(+), 28 deletions(-)
> 

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 07/13] phy: qcom-qmp-usb: clean up probe initialisation

[Johan Hovold]

Stop abusing the driver data pointer and instead pass the driver state
structure directly to the initialisation helpers during probe.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 46 ++++++++++++-------------
 1 file changed, 22 insertions(+), 24 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index ccb834a08d5b..2e603831e45e 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2250,9 +2250,10 @@ static const struct dev_pm_ops qmp_usb_pm_ops = {
 			   qmp_usb_runtime_resume, NULL)
 };
 
-static int qmp_usb_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
+static int qmp_usb_vreg_init(struct qmp_usb *qmp)
 {
-	struct qmp_usb *qmp = dev_get_drvdata(dev);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	struct device *dev = qmp->dev;
 	int num = cfg->num_vregs;
 	int i;
 
@@ -2266,9 +2267,10 @@ static int qmp_usb_vreg_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 	return devm_regulator_bulk_get(dev, num, qmp->vregs);
 }
 
-static int qmp_usb_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
+static int qmp_usb_reset_init(struct qmp_usb *qmp)
 {
-	struct qmp_usb *qmp = dev_get_drvdata(dev);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	struct device *dev = qmp->dev;
 	int i;
 	int ret;
 
@@ -2287,9 +2289,10 @@ static int qmp_usb_reset_init(struct device *dev, const struct qmp_phy_cfg *cfg)
 	return 0;
 }
 
-static int qmp_usb_clk_init(struct device *dev, const struct qmp_phy_cfg *cfg)
+static int qmp_usb_clk_init(struct qmp_usb *qmp)
 {
-	struct qmp_usb *qmp = dev_get_drvdata(dev);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	struct device *dev = qmp->dev;
 	int num = cfg->num_clks;
 	int i;
 
@@ -2385,10 +2388,10 @@ static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np,
 	return devm_of_iomap(dev, np, index, NULL);
 }
 
-static int qmp_usb_create(struct device *dev, struct device_node *np,
-			void __iomem *serdes, const struct qmp_phy_cfg *cfg)
+static int qmp_usb_create(struct qmp_usb *qmp, struct device_node *np)
 {
-	struct qmp_usb *qmp = dev_get_drvdata(dev);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	struct device *dev = qmp->dev;
 	struct phy *generic_phy;
 	bool exclusive = true;
 	int ret;
@@ -2402,8 +2405,6 @@ static int qmp_usb_create(struct device *dev, struct device_node *np,
 	if (of_device_is_compatible(dev->of_node, "qcom,sm8350-qmp-usb3-uni-phy"))
 		exclusive = false;
 
-	qmp->cfg = cfg;
-	qmp->serdes = serdes;
 	/*
 	 * Get memory resources for the PHY:
 	 * Resources are indexed as: tx -> 0; rx -> 1; pcs -> 2.
@@ -2468,8 +2469,6 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	struct device *dev = &pdev->dev;
 	struct device_node *child;
 	struct phy_provider *phy_provider;
-	void __iomem *serdes;
-	const struct qmp_phy_cfg *cfg = NULL;
 	struct qmp_usb *qmp;
 	int ret;
 
@@ -2478,31 +2477,30 @@ static int qmp_usb_probe(struct platform_device *pdev)
 		return -ENOMEM;
 
 	qmp->dev = dev;
-	dev_set_drvdata(dev, qmp);
 
-	cfg = of_device_get_match_data(dev);
-	if (!cfg)
+	qmp->cfg = of_device_get_match_data(dev);
+	if (!qmp->cfg)
 		return -EINVAL;
 
-	serdes = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(serdes))
-		return PTR_ERR(serdes);
+	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(qmp->serdes))
+		return PTR_ERR(qmp->serdes);
 
-	if (cfg->has_phy_dp_com_ctrl) {
+	if (qmp->cfg->has_phy_dp_com_ctrl) {
 		qmp->dp_com = devm_platform_ioremap_resource(pdev, 1);
 		if (IS_ERR(qmp->dp_com))
 			return PTR_ERR(qmp->dp_com);
 	}
 
-	ret = qmp_usb_clk_init(dev, cfg);
+	ret = qmp_usb_clk_init(qmp);
 	if (ret)
 		return ret;
 
-	ret = qmp_usb_reset_init(dev, cfg);
+	ret = qmp_usb_reset_init(qmp);
 	if (ret)
 		return ret;
 
-	ret = qmp_usb_vreg_init(dev, cfg);
+	ret = qmp_usb_vreg_init(qmp);
 	if (ret)
 		return ret;
 
@@ -2520,7 +2518,7 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	 */
 	pm_runtime_forbid(dev);
 
-	ret = qmp_usb_create(dev, child, serdes, cfg);
+	ret = qmp_usb_create(qmp, child);
 	if (ret)
 		goto err_node_put;
 
-- 
2.37.3

Re: [PATCH 07/13] phy: qcom-qmp-usb: clean up probe initialisation

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Stop abusing the driver data pointer and instead pass the driver state
> structure directly to the initialisation helpers during probe.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 46 ++++++++++++-------------
>   1 file changed, 22 insertions(+), 24 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 08/13] phy: qcom-qmp-usb: rename PHY ops structure

[Johan Hovold]

Rename the PHY operation structure so that it has a "phy_ops" suffix and
move it next to the implementation.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index 2e603831e45e..4a7b961d2965 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2149,6 +2149,13 @@ static int qmp_usb_set_mode(struct phy *phy, enum phy_mode mode, int submode)
 	return 0;
 }
 
+static const struct phy_ops qmp_usb_phy_ops = {
+	.init		= qmp_usb_enable,
+	.exit		= qmp_usb_disable,
+	.set_mode	= qmp_usb_set_mode,
+	.owner		= THIS_MODULE,
+};
+
 static void qmp_usb_enable_autonomous_mode(struct qmp_usb *qmp)
 {
 	const struct qmp_phy_cfg *cfg = qmp->cfg;
@@ -2366,13 +2373,6 @@ static int phy_pipe_clk_register(struct qmp_usb *qmp, struct device_node *np)
 	return devm_add_action_or_reset(qmp->dev, phy_clk_release_provider, np);
 }
 
-static const struct phy_ops qmp_usb_ops = {
-	.init		= qmp_usb_enable,
-	.exit		= qmp_usb_disable,
-	.set_mode	= qmp_usb_set_mode,
-	.owner		= THIS_MODULE,
-};
-
 static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np,
 					int index, bool exclusive)
 {
@@ -2451,7 +2451,7 @@ static int qmp_usb_create(struct qmp_usb *qmp, struct device_node *np)
 				     "failed to get pipe clock\n");
 	}
 
-	generic_phy = devm_phy_create(dev, np, &qmp_usb_ops);
+	generic_phy = devm_phy_create(dev, np, &qmp_usb_phy_ops);
 	if (IS_ERR(generic_phy)) {
 		ret = PTR_ERR(generic_phy);
 		dev_err(dev, "failed to create PHY: %d\n", ret);
-- 
2.37.3

Re: [PATCH 08/13] phy: qcom-qmp-usb: rename PHY ops structure

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Rename the PHY operation structure so that it has a "phy_ops" suffix and
> move it next to the implementation.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 16 ++++++++--------
>   1 file changed, 8 insertions(+), 8 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 09/13] phy: qcom-qmp-usb: clean up PHY init

[Johan Hovold]

Clean up the PHY initialisation somewhat by programming both tx and rx
for the second lane after the first lane.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index 4a7b961d2965..d5e62cfd93f8 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2058,14 +2058,12 @@ static int qmp_usb_power_on(struct phy *phy)
 
 	/* Tx, Rx, and PCS configurations */
 	qmp_usb_configure_lane(tx, cfg->tx_tbl, cfg->tx_tbl_num, 1);
-
-	if (cfg->lanes >= 2)
-		qmp_usb_configure_lane(qmp->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);
-
 	qmp_usb_configure_lane(rx, cfg->rx_tbl, cfg->rx_tbl_num, 1);
 
-	if (cfg->lanes >= 2)
+	if (cfg->lanes >= 2) {
+		qmp_usb_configure_lane(qmp->tx2, cfg->tx_tbl, cfg->tx_tbl_num, 2);
 		qmp_usb_configure_lane(qmp->rx2, cfg->rx_tbl, cfg->rx_tbl_num, 2);
+	}
 
 	qmp_usb_configure(pcs, cfg->pcs_tbl, cfg->pcs_tbl_num);
 
-- 
2.37.3

Re: [PATCH 09/13] phy: qcom-qmp-usb: clean up PHY init

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Clean up the PHY initialisation somewhat by programming both tx and rx
> for the second lane after the first lane.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 8 +++-----
>   1 file changed, 3 insertions(+), 5 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 10/13] dt-bindings: phy: qcom,qmp-usb: rename current bindings

[Johan Hovold]

The current QMP USB PHY bindings are based on the original MSM8996
binding which provided multiple PHYs per IP block and these in turn were
described by child nodes.

Later QMP USB PHY blocks only provide a single PHY and the remnant child
node does not really reflect the hardware.

The original MSM8996 binding also ended up describing the individual
register blocks as belonging to either the wrapper node or the PHY child
nodes.

This is an unnecessary level of detail which has lead to problems when
later IP blocks using different register layouts have been forced to fit
the original mould rather than updating the binding. The bindings are
arguable also incomplete as they only the describe register blocks used
by the current Linux drivers (e.g. does not include the per lane PCS
registers).

In preparation for adding new bindings for SC8280XP which further
bindings can be based on, rename the current bindings after MSM8996 and
add a reference to the SC8280XP bindings.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 ...qcom,qmp-usb-phy.yaml => qcom,msm8996-qmp-usb-phy.yaml} | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)
 rename Documentation/devicetree/bindings/phy/{qcom,qmp-usb-phy.yaml => qcom,msm8996-qmp-usb-phy.yaml} (97%)

diff --git a/Documentation/devicetree/bindings/phy/qcom,qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
similarity index 97%
rename from Documentation/devicetree/bindings/phy/qcom,qmp-usb-phy.yaml
rename to Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
index 7acb4b7de7f9..a72e96f241d1 100644
--- a/Documentation/devicetree/bindings/phy/qcom,qmp-usb-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
@@ -1,10 +1,10 @@
 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
 %YAML 1.2
 ---
-$id: http://devicetree.org/schemas/phy/qcom,qmp-usb-phy.yaml#
+$id: http://devicetree.org/schemas/phy/qcom,msm8996-qmp-usb-phy.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#
 
-title: Qualcomm QMP PHY controller (USB)
+title: Qualcomm QMP PHY controller (USB, MSM8996)
 
 maintainers:
   - Vinod Koul <vkoul@kernel.org>
@@ -13,6 +13,9 @@ description:
   QMP PHY controller supports physical layer functionality for a number of
   controllers on Qualcomm chipsets, such as, PCIe, UFS, and USB.
 
+  Note that these bindings are for SoCs up to SC8180X. For newer SoCs, see
+  qcom,sc8280xp-qmp-usb-phy.yaml.
+
 properties:
   compatible:
     enum:
-- 
2.37.3

Re: [PATCH 10/13] dt-bindings: phy: qcom,qmp-usb: rename current bindings

[Krzysztof Kozlowski]

On 24/10/2022 06:06, Johan Hovold wrote:
> The current QMP USB PHY bindings are based on the original MSM8996
> binding which provided multiple PHYs per IP block and these in turn were
> described by child nodes.
> 
> Later QMP USB PHY blocks only provide a single PHY and the remnant child
> node does not really reflect the hardware.
> 
> The original MSM8996 binding also ended up describing the individual
> register blocks as belonging to either the wrapper node or the PHY child
> nodes.
> 
> This is an unnecessary level of detail which has lead to problems when
> later IP blocks using different register layouts have been forced to fit
> the original mould rather than updating the binding. The bindings are
> arguable also incomplete as they only the describe register blocks used
> by the current Linux drivers (e.g. does not include the per lane PCS
> registers).
> 
> In preparation for adding new bindings for SC8280XP which further
> bindings can be based on, rename the current bindings after MSM8996 and
> add a reference to the SC8280XP bindings.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>


Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Best regards,
Krzysztof

[PATCH 11/13] dt-bindings: phy: qcom,qmp-usb: fix sc8280xp binding

[Johan Hovold]

The current QMP USB PHY bindings are based on the original MSM8996 PCIe
PHY binding which provided multiple PHYs per IP block and these in turn
were described by child nodes.

The QMP USB PHY block only provide a single PHY and the remnant child
node does not really reflect the hardware.

The original MSM8996 binding also ended up describing the individual
register blocks as belonging to either the wrapper node or the PHY child
nodes.

This is an unnecessary level of detail which has lead to problems when
later IP blocks using different register layouts have been forced to fit
the original mould rather than updating the binding. The bindings are
arguable also incomplete as they only the describe register blocks used
by the current Linux drivers (e.g. does not include the per lane PCS
registers).

Note that PCS_USB region is also not described by the current bindings
despite being used by the driver and this has led to people increasing
the size of the PCS region in the devicetree so that it includes PCS_USB
registers even though other regions like TX and RX may lie in between.

Add a new binding for the QMP USB PHYs found on SC8280XP which further
bindings can be based on.

Note that this also fixes the SC8280XP "phy_phy" reset name.

Also note that the current binding is simply removed instead of being
deprecated as it was only recently merged and support for SC8280XP is
still under development. And, specifically, there is no support in
mainline for the multiport controller that uses these PHYs.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 .../phy/qcom,msm8996-qmp-usb-phy.yaml         |  13 ---
 .../phy/qcom,sc8280xp-qmp-usb-phy.yaml        | 105 ++++++++++++++++++
 2 files changed, 105 insertions(+), 13 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml

diff --git a/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
index a72e96f241d1..874c32b75428 100644
--- a/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
+++ b/Documentation/devicetree/bindings/phy/qcom,msm8996-qmp-usb-phy.yaml
@@ -26,7 +26,6 @@ properties:
       - qcom,qcm2290-qmp-usb3-phy
       - qcom,sc7180-qmp-usb3-phy
       - qcom,sc8180x-qmp-usb3-phy
-      - qcom,sc8280xp-qmp-usb3-uni-phy
       - qcom,sdm845-qmp-usb3-phy
       - qcom,sdm845-qmp-usb3-uni-phy
       - qcom,sdx55-qmp-usb3-uni-phy
@@ -204,7 +203,6 @@ allOf:
         compatible:
           contains:
             enum:
-              - qcom,sc8280xp-qmp-usb3-uni-phy
               - qcom,sm8150-qmp-usb3-phy
               - qcom,sm8150-qmp-usb3-uni-phy
               - qcom,sm8250-qmp-usb3-uni-phy
@@ -271,16 +269,6 @@ allOf:
             - const: phy_phy
             - const: phy
 
-  - if:
-      properties:
-        compatible:
-          contains:
-            enum:
-              - qcom,sc8280xp-qmp-usb3-uni-phy
-    then:
-      required:
-        - power-domains
-
   - if:
       properties:
         compatible:
@@ -352,7 +340,6 @@ allOf:
           contains:
             enum:
               - qcom,msm8996-qmp-usb3-phy
-              - qcom,sc8280xp-qmp-usb3-uni-phy
               - qcom,sm8250-qmp-usb3-uni-phy
               - qcom,sm8350-qmp-usb3-uni-phy
     then:
diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
new file mode 100644
index 000000000000..95ee81d782f9
--- /dev/null
+++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
@@ -0,0 +1,105 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/phy/qcom,sc8280xp-qmp-usb-phy.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm QMP PHY controller (USB, SC8280XP)
+
+maintainers:
+  - Vinod Koul <vkoul@kernel.org>
+
+description:
+  The QMP PHY controller supports physical layer functionality for a number of
+  controllers on Qualcomm chipsets, such as, PCIe, UFS, and USB.
+
+properties:
+  compatible:
+    enum:
+      - qcom,sc8280xp-qmp-usb3-uni-phy
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 5
+
+  clock-names:
+    items:
+      - const: aux
+      - const: ref_clk_src
+      - const: ref
+      - const: com_aux
+      - const: pipe
+
+  power-domains:
+    maxItems: 1
+
+  resets:
+    maxItems: 2
+
+  reset-names:
+    items:
+      - const: phy
+      - const: phy_phy
+
+  vdda-phy-supply: true
+
+  vdda-pll-supply: true
+
+  "#clock-cells":
+    const: 0
+
+  clock-output-names:
+    maxItems: 1
+
+  "#phy-cells":
+    const: 0
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - power-domains
+  - resets
+  - reset-names
+  - vdda-phy-supply
+  - vdda-pll-supply
+  - "#clock-cells"
+  - clock-output-names
+  - "#phy-cells"
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-sc8280xp.h>
+    #include <dt-bindings/clock/qcom,rpmh.h>
+
+    phy@88ef000 {
+      compatible = "qcom,sc8280xp-qmp-usb3-uni-phy";
+      reg = <0x088ef000 0x2000>;
+
+      clocks = <&gcc GCC_USB3_MP_PHY_AUX_CLK>,
+               <&rpmhcc RPMH_CXO_CLK>,
+               <&gcc GCC_USB3_MP0_CLKREF_CLK>,
+               <&gcc GCC_USB3_MP_PHY_COM_AUX_CLK>,
+               <&gcc GCC_USB3_MP_PHY_PIPE_0_CLK>;
+      clock-names = "aux", "ref_clk_src", "ref", "com_aux",
+                    "pipe";
+
+      power-domains = <&gcc USB30_MP_GDSC>;
+
+      resets = <&gcc GCC_USB3_UNIPHY_MP0_BCR>,
+               <&gcc GCC_USB3UNIPHY_PHY_MP0_BCR>;
+      reset-names = "phy", "phy_phy";
+
+      vdda-phy-supply = <&vreg_l3a>;
+      vdda-pll-supply = <&vreg_l5a>;
+
+      #clock-cells = <0>;
+      clock-output-names = "usb2_phy0_pipe_clk";
+
+      #phy-cells = <0>;
+    };
-- 
2.37.3

Re: [PATCH 11/13] dt-bindings: phy: qcom,qmp-usb: fix sc8280xp binding

[Krzysztof Kozlowski]

On 24/10/2022 06:06, Johan Hovold wrote:
> The current QMP USB PHY bindings are based on the original MSM8996 PCIe
> PHY binding which provided multiple PHYs per IP block and these in turn
> were described by child nodes.
> 
> The QMP USB PHY block only provide a single PHY and the remnant child
> node does not really reflect the hardware.
> 
> The original MSM8996 binding also ended up describing the individual
> register blocks as belonging to either the wrapper node or the PHY child
> nodes.
> 

(...)

>      then:
> diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
> new file mode 100644
> index 000000000000..95ee81d782f9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml

Filename based on compatible, so in this case
"qcom,sc8280xp-qmp-usb3-uni-phy.yaml", unless it's like the PCI case?


Best regards,
Krzysztof

Re: [PATCH 11/13] dt-bindings: phy: qcom,qmp-usb: fix sc8280xp binding

[Johan Hovold]

On Thu, Oct 27, 2022 at 10:15:45PM -0400, Krzysztof Kozlowski wrote:
> On 24/10/2022 06:06, Johan Hovold wrote:
> > The current QMP USB PHY bindings are based on the original MSM8996 PCIe
> > PHY binding which provided multiple PHYs per IP block and these in turn
> > were described by child nodes.
> > 
> > The QMP USB PHY block only provide a single PHY and the remnant child
> > node does not really reflect the hardware.
> > 
> > The original MSM8996 binding also ended up describing the individual
> > register blocks as belonging to either the wrapper node or the PHY child
> > nodes.
> > 
> 
> (...)
> 
> >      then:
> > diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
> > new file mode 100644
> > index 000000000000..95ee81d782f9
> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
> 
> Filename based on compatible, so in this case
> "qcom,sc8280xp-qmp-usb3-uni-phy.yaml", unless it's like the PCI case?

Yes, you're right. Thanks for catching that. This should be the only
sc8280xp USB PHY compatible so the file name should be updates as you
suggested.

I'll wait a bit and see if Vinod has any comments before respinning this
series.

Johan

Re: [PATCH 11/13] dt-bindings: phy: qcom,qmp-usb: fix sc8280xp binding

[Johan Hovold]

On Fri, Oct 28, 2022 at 08:09:11AM +0200, Johan Hovold wrote:
> On Thu, Oct 27, 2022 at 10:15:45PM -0400, Krzysztof Kozlowski wrote:
> > On 24/10/2022 06:06, Johan Hovold wrote:
> > > The current QMP USB PHY bindings are based on the original MSM8996 PCIe
> > > PHY binding which provided multiple PHYs per IP block and these in turn
> > > were described by child nodes.
> > > 
> > > The QMP USB PHY block only provide a single PHY and the remnant child
> > > node does not really reflect the hardware.
> > > 
> > > The original MSM8996 binding also ended up describing the individual
> > > register blocks as belonging to either the wrapper node or the PHY child
> > > nodes.
> > > 
> > 
> > (...)
> > 
> > >      then:
> > > diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
> > > new file mode 100644
> > > index 000000000000..95ee81d782f9
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
> > 
> > Filename based on compatible, so in this case
> > "qcom,sc8280xp-qmp-usb3-uni-phy.yaml", unless it's like the PCI case?
> 
> Yes, you're right. Thanks for catching that. This should be the only
> sc8280xp USB PHY compatible so the file name should be updates as you
> suggested.

Looks like I missed the '3' in 'usb3' in the previous patch as well.

Johan

Re: [PATCH 11/13] dt-bindings: phy: qcom,qmp-usb: fix sc8280xp binding

[Vinod Koul]

On 28-10-22, 08:09, Johan Hovold wrote:
> On Thu, Oct 27, 2022 at 10:15:45PM -0400, Krzysztof Kozlowski wrote:
> > On 24/10/2022 06:06, Johan Hovold wrote:
> > > The current QMP USB PHY bindings are based on the original MSM8996 PCIe
> > > PHY binding which provided multiple PHYs per IP block and these in turn
> > > were described by child nodes.
> > > 
> > > The QMP USB PHY block only provide a single PHY and the remnant child
> > > node does not really reflect the hardware.
> > > 
> > > The original MSM8996 binding also ended up describing the individual
> > > register blocks as belonging to either the wrapper node or the PHY child
> > > nodes.
> > > 
> > 
> > (...)
> > 
> > >      then:
> > > diff --git a/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
> > > new file mode 100644
> > > index 000000000000..95ee81d782f9
> > > --- /dev/null
> > > +++ b/Documentation/devicetree/bindings/phy/qcom,sc8280xp-qmp-usb-phy.yaml
> > 
> > Filename based on compatible, so in this case
> > "qcom,sc8280xp-qmp-usb3-uni-phy.yaml", unless it's like the PCI case?
> 
> Yes, you're right. Thanks for catching that. This should be the only
> sc8280xp USB PHY compatible so the file name should be updates as you
> suggested.
> 
> I'll wait a bit and see if Vinod has any comments before respinning this
> series.

lgtm, pls respin


-- 
~Vinod

[PATCH 12/13] phy: qcom-qmp-usb: restructure PHY creation

[Johan Hovold]

In preparation for supporting devicetree bindings which do not use a
child node, move the PHY creation to probe() proper and parse the serdes
and dp_com resources in what is now the legacy devicetree helper.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 46 ++++++++++++-------------
 1 file changed, 22 insertions(+), 24 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index d5e62cfd93f8..3f5e22b1d29e 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -2386,13 +2386,22 @@ static void __iomem *qmp_usb_iomap(struct device *dev, struct device_node *np,
 	return devm_of_iomap(dev, np, index, NULL);
 }
 
-static int qmp_usb_create(struct qmp_usb *qmp, struct device_node *np)
+static int qmp_usb_parse_dt_legacy(struct qmp_usb *qmp, struct device_node *np)
 {
+	struct platform_device *pdev = to_platform_device(qmp->dev);
 	const struct qmp_phy_cfg *cfg = qmp->cfg;
 	struct device *dev = qmp->dev;
-	struct phy *generic_phy;
 	bool exclusive = true;
-	int ret;
+
+	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(qmp->serdes))
+		return PTR_ERR(qmp->serdes);
+
+	if (cfg->has_phy_dp_com_ctrl) {
+		qmp->dp_com = devm_platform_ioremap_resource(pdev, 1);
+		if (IS_ERR(qmp->dp_com))
+			return PTR_ERR(qmp->dp_com);
+	}
 
 	/*
 	 * FIXME: These bindings should be fixed to not rely on overlapping
@@ -2449,16 +2458,6 @@ static int qmp_usb_create(struct qmp_usb *qmp, struct device_node *np)
 				     "failed to get pipe clock\n");
 	}
 
-	generic_phy = devm_phy_create(dev, np, &qmp_usb_phy_ops);
-	if (IS_ERR(generic_phy)) {
-		ret = PTR_ERR(generic_phy);
-		dev_err(dev, "failed to create PHY: %d\n", ret);
-		return ret;
-	}
-
-	qmp->phy = generic_phy;
-	phy_set_drvdata(generic_phy, qmp);
-
 	return 0;
 }
 
@@ -2480,16 +2479,6 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	if (!qmp->cfg)
 		return -EINVAL;
 
-	qmp->serdes = devm_platform_ioremap_resource(pdev, 0);
-	if (IS_ERR(qmp->serdes))
-		return PTR_ERR(qmp->serdes);
-
-	if (qmp->cfg->has_phy_dp_com_ctrl) {
-		qmp->dp_com = devm_platform_ioremap_resource(pdev, 1);
-		if (IS_ERR(qmp->dp_com))
-			return PTR_ERR(qmp->dp_com);
-	}
-
 	ret = qmp_usb_clk_init(qmp);
 	if (ret)
 		return ret;
@@ -2516,7 +2505,7 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	 */
 	pm_runtime_forbid(dev);
 
-	ret = qmp_usb_create(qmp, child);
+	ret = qmp_usb_parse_dt_legacy(qmp, child);
 	if (ret)
 		goto err_node_put;
 
@@ -2524,6 +2513,15 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	if (ret)
 		goto err_node_put;
 
+	qmp->phy = devm_phy_create(dev, child, &qmp_usb_phy_ops);
+	if (IS_ERR(qmp->phy)) {
+		ret = PTR_ERR(qmp->phy);
+		dev_err(dev, "failed to create PHY: %d\n", ret);
+		goto err_node_put;
+	}
+
+	phy_set_drvdata(qmp->phy, qmp);
+
 	of_node_put(child);
 
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
-- 
2.37.3

Re: [PATCH 12/13] phy: qcom-qmp-usb: restructure PHY creation

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> In preparation for supporting devicetree bindings which do not use a
> child node, move the PHY creation to probe() proper and parse the serdes
> and dp_com resources in what is now the legacy devicetree helper.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 46 ++++++++++++-------------
>   1 file changed, 22 insertions(+), 24 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

[PATCH 13/13] phy: qcom-qmp-usb: add support for updated sc8280xp binding

[Johan Hovold]

Add support for the new SC8280XP binding.

Note that the binding does not try to describe every register subregion
and instead the driver holds the corresponding offsets. This includes
the PCS_USB region which was initially overlooked.

Note that the driver will no longer accept the old binding due to the
fixed "phy_phy" reset name.

Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
---
 drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 82 ++++++++++++++++++++-----
 1 file changed, 67 insertions(+), 15 deletions(-)

diff --git a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
index 3f5e22b1d29e..372f9853c749 100644
--- a/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
+++ b/drivers/phy/qualcomm/phy-qcom-qmp-usb.c
@@ -1414,10 +1414,20 @@ static const struct qmp_phy_init_tbl sc8280xp_usb3_uniphy_pcs_tbl[] = {
 	QMP_PHY_INIT_CFG(QPHY_V5_PCS_REFGEN_REQ_CONFIG1, 0x21),
 };
 
+struct qmp_usb_offsets {
+	u16 serdes;
+	u16 pcs;
+	u16 pcs_usb;
+	u16 tx;
+	u16 rx;
+};
+
 /* struct qmp_phy_cfg - per-PHY initialization config */
 struct qmp_phy_cfg {
 	int lanes;
 
+	const struct qmp_usb_offsets *offsets;
+
 	/* Init sequence for PHY blocks - serdes, tx, rx, pcs */
 	const struct qmp_phy_init_tbl *serdes_tbl;
 	int serdes_tbl_num;
@@ -1548,6 +1558,14 @@ static const char * const qmp_phy_vreg_l[] = {
 	"vdda-phy", "vdda-pll",
 };
 
+static const struct qmp_usb_offsets qmp_usb_offsets_v5 = {
+	.serdes		= 0,
+	.pcs		= 0x0200,
+	.pcs_usb	= 0x1200,
+	.tx		= 0x0e00,
+	.rx		= 0x1000,
+};
+
 static const struct qmp_phy_cfg ipq8074_usb3phy_cfg = {
 	.lanes			= 1,
 
@@ -1637,6 +1655,8 @@ static const struct qmp_phy_cfg sc7180_usb3phy_cfg = {
 static const struct qmp_phy_cfg sc8280xp_usb3_uniphy_cfg = {
 	.lanes			= 1,
 
+	.offsets		= &qmp_usb_offsets_v5,
+
 	.serdes_tbl		= sc8280xp_usb3_uniphy_serdes_tbl,
 	.serdes_tbl_num		= ARRAY_SIZE(sc8280xp_usb3_uniphy_serdes_tbl),
 	.tx_tbl			= sc8280xp_usb3_uniphy_tx_tbl,
@@ -1647,12 +1667,11 @@ static const struct qmp_phy_cfg sc8280xp_usb3_uniphy_cfg = {
 	.pcs_tbl_num		= ARRAY_SIZE(sc8280xp_usb3_uniphy_pcs_tbl),
 	.clk_list		= qmp_v4_phy_clk_l,
 	.num_clks		= ARRAY_SIZE(qmp_v4_phy_clk_l),
-	.reset_list		= msm8996_usb3phy_reset_l,
-	.num_resets		= ARRAY_SIZE(msm8996_usb3phy_reset_l),
+	.reset_list		= qcm2290_usb3phy_reset_l,
+	.num_resets		= ARRAY_SIZE(qcm2290_usb3phy_reset_l),
 	.vreg_list		= qmp_phy_vreg_l,
 	.num_vregs		= ARRAY_SIZE(qmp_phy_vreg_l),
 	.regs			= qmp_v4_usb3phy_regs_layout,
-	.pcs_usb_offset		= 0x1000,
 };
 
 static const struct qmp_phy_cfg qmp_v3_usb3_uniphy_cfg = {
@@ -2461,11 +2480,41 @@ static int qmp_usb_parse_dt_legacy(struct qmp_usb *qmp, struct device_node *np)
 	return 0;
 }
 
+static int qmp_usb_parse_dt(struct qmp_usb *qmp)
+{
+	struct platform_device *pdev = to_platform_device(qmp->dev);
+	const struct qmp_phy_cfg *cfg = qmp->cfg;
+	const struct qmp_usb_offsets *offs = cfg->offsets;
+	struct device *dev = qmp->dev;
+	void __iomem *base;
+
+	if (!offs)
+		return -EINVAL;
+
+	base = devm_platform_ioremap_resource(pdev, 0);
+	if (IS_ERR(base))
+		return PTR_ERR(base);
+
+	qmp->serdes = base + offs->serdes;
+	qmp->pcs = base + offs->pcs;
+	qmp->pcs_usb = base + offs->pcs_usb;
+	qmp->tx = base + offs->tx;
+	qmp->rx = base + offs->rx;
+
+	qmp->pipe_clk = devm_clk_get(dev, "pipe");
+	if (IS_ERR(qmp->pipe_clk)) {
+		return dev_err_probe(dev, PTR_ERR(qmp->pipe_clk),
+				     "failed to get pipe clock\n");
+	}
+
+	return 0;
+}
+
 static int qmp_usb_probe(struct platform_device *pdev)
 {
 	struct device *dev = &pdev->dev;
-	struct device_node *child;
 	struct phy_provider *phy_provider;
+	struct device_node *np;
 	struct qmp_usb *qmp;
 	int ret;
 
@@ -2491,9 +2540,16 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	child = of_get_next_available_child(dev->of_node, NULL);
-	if (!child)
-		return -EINVAL;
+	/* Check for legacy binding with child node. */
+	np = of_get_next_available_child(dev->of_node, NULL);
+	if (np) {
+		ret = qmp_usb_parse_dt_legacy(qmp, np);
+	} else {
+		np = of_node_get(dev->of_node);
+		ret = qmp_usb_parse_dt(qmp);
+	}
+	if (ret)
+		goto err_node_put;
 
 	pm_runtime_set_active(dev);
 	ret = devm_pm_runtime_enable(dev);
@@ -2505,15 +2561,11 @@ static int qmp_usb_probe(struct platform_device *pdev)
 	 */
 	pm_runtime_forbid(dev);
 
-	ret = qmp_usb_parse_dt_legacy(qmp, child);
-	if (ret)
-		goto err_node_put;
-
-	ret = phy_pipe_clk_register(qmp, child);
+	ret = phy_pipe_clk_register(qmp, np);
 	if (ret)
 		goto err_node_put;
 
-	qmp->phy = devm_phy_create(dev, child, &qmp_usb_phy_ops);
+	qmp->phy = devm_phy_create(dev, np, &qmp_usb_phy_ops);
 	if (IS_ERR(qmp->phy)) {
 		ret = PTR_ERR(qmp->phy);
 		dev_err(dev, "failed to create PHY: %d\n", ret);
@@ -2522,14 +2574,14 @@ static int qmp_usb_probe(struct platform_device *pdev)
 
 	phy_set_drvdata(qmp->phy, qmp);
 
-	of_node_put(child);
+	of_node_put(np);
 
 	phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
 
 	return PTR_ERR_OR_ZERO(phy_provider);
 
 err_node_put:
-	of_node_put(child);
+	of_node_put(np);
 	return ret;
 }
 
-- 
2.37.3

Re: [PATCH 13/13] phy: qcom-qmp-usb: add support for updated sc8280xp binding

[Dmitry Baryshkov]

On 24/10/2022 13:06, Johan Hovold wrote:
> Add support for the new SC8280XP binding.
> 
> Note that the binding does not try to describe every register subregion
> and instead the driver holds the corresponding offsets. This includes
> the PCS_USB region which was initially overlooked.
> 
> Note that the driver will no longer accept the old binding due to the
> fixed "phy_phy" reset name.
> 
> Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> ---
>   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 82 ++++++++++++++++++++-----
>   1 file changed, 67 insertions(+), 15 deletions(-)

Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

-- 
With best wishes
Dmitry

Re: [PATCH 13/13] phy: qcom-qmp-usb: add support for updated sc8280xp binding

[Johan Hovold]

On Mon, Oct 24, 2022 at 04:35:25PM +0300, Dmitry Baryshkov wrote:
> On 24/10/2022 13:06, Johan Hovold wrote:
> > Add support for the new SC8280XP binding.
> > 
> > Note that the binding does not try to describe every register subregion
> > and instead the driver holds the corresponding offsets. This includes
> > the PCS_USB region which was initially overlooked.
> > 
> > Note that the driver will no longer accept the old binding due to the
> > fixed "phy_phy" reset name.
> > 
> > Signed-off-by: Johan Hovold <johan+linaro@kernel.org>
> > ---
> >   drivers/phy/qualcomm/phy-qcom-qmp-usb.c | 82 ++++++++++++++++++++-----
> >   1 file changed, 67 insertions(+), 15 deletions(-)
> 
> Reviewed-by: Dmitry Baryshkov <dmitry.baryshkov@linaro.org>

Thanks for reviewing, Dmitry!

Johan