[PATCH v2] clk: qcom: clk-rpm: add missing rpm clk for ipq806x

[PATCH v2] clk: qcom: clk-rpm: add missing rpm clk for ipq806x

[Ansuel Smith]

Add missing definition of rpm clk for ipq806x soc

Signed-off-by: John Crispin <john@phrozen.org>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
Acked-by: John Crispin <john@phrozen.org>
---
 .../devicetree/bindings/clock/qcom,rpmcc.txt  |  1 +
 drivers/clk/qcom/clk-rpm.c                    | 35 +++++++++++++++++++
 include/dt-bindings/clock/qcom,rpmcc.h        |  4 +++
 3 files changed, 40 insertions(+)

diff --git a/Documentation/devicetree/bindings/clock/qcom,rpmcc.txt b/Documentation/devicetree/bindings/clock/qcom,rpmcc.txt
index 944719bd586f..4bb2cbeff2b4 100644
--- a/Documentation/devicetree/bindings/clock/qcom,rpmcc.txt
+++ b/Documentation/devicetree/bindings/clock/qcom,rpmcc.txt
@@ -15,6 +15,7 @@ Required properties :
 			"qcom,rpmcc-msm8916", "qcom,rpmcc"
 			"qcom,rpmcc-msm8974", "qcom,rpmcc"
 			"qcom,rpmcc-apq8064", "qcom,rpmcc"
+			"qcom,rpmcc-ipq806x", "qcom,rpmcc"
 			"qcom,rpmcc-msm8996", "qcom,rpmcc"
 			"qcom,rpmcc-msm8998", "qcom,rpmcc"
 			"qcom,rpmcc-qcs404", "qcom,rpmcc"
diff --git a/drivers/clk/qcom/clk-rpm.c b/drivers/clk/qcom/clk-rpm.c
index 9e3110a71f12..f71d228fd6bd 100644
--- a/drivers/clk/qcom/clk-rpm.c
+++ b/drivers/clk/qcom/clk-rpm.c
@@ -543,10 +543,45 @@ static const struct rpm_clk_desc rpm_clk_apq8064 = {
 	.num_clks = ARRAY_SIZE(apq8064_clks),
 };
 
+/* ipq806x */
+DEFINE_CLK_RPM(ipq806x, afab_clk, afab_a_clk, QCOM_RPM_APPS_FABRIC_CLK);
+DEFINE_CLK_RPM(ipq806x, cfpb_clk, cfpb_a_clk, QCOM_RPM_CFPB_CLK);
+DEFINE_CLK_RPM(ipq806x, daytona_clk, daytona_a_clk, QCOM_RPM_DAYTONA_FABRIC_CLK);
+DEFINE_CLK_RPM(ipq806x, ebi1_clk, ebi1_a_clk, QCOM_RPM_EBI1_CLK);
+DEFINE_CLK_RPM(ipq806x, sfab_clk, sfab_a_clk, QCOM_RPM_SYS_FABRIC_CLK);
+DEFINE_CLK_RPM(ipq806x, sfpb_clk, sfpb_a_clk, QCOM_RPM_SFPB_CLK);
+DEFINE_CLK_RPM(ipq806x, nss_fabric_0_clk, nss_fabric_0_a_clk, QCOM_RPM_NSS_FABRIC_0_CLK);
+DEFINE_CLK_RPM(ipq806x, nss_fabric_1_clk, nss_fabric_1_a_clk, QCOM_RPM_NSS_FABRIC_1_CLK);
+
+static struct clk_rpm *ipq806x_clks[] = {
+	[RPM_APPS_FABRIC_CLK] = &ipq806x_afab_clk,
+	[RPM_APPS_FABRIC_A_CLK] = &ipq806x_afab_a_clk,
+	[RPM_CFPB_CLK] = &ipq806x_cfpb_clk,
+	[RPM_CFPB_A_CLK] = &ipq806x_cfpb_a_clk,
+	[RPM_DAYTONA_FABRIC_CLK] = &ipq806x_daytona_clk,
+	[RPM_DAYTONA_FABRIC_A_CLK] = &ipq806x_daytona_a_clk,
+	[RPM_EBI1_CLK] = &ipq806x_ebi1_clk,
+	[RPM_EBI1_A_CLK] = &ipq806x_ebi1_a_clk,
+	[RPM_SYS_FABRIC_CLK] = &ipq806x_sfab_clk,
+	[RPM_SYS_FABRIC_A_CLK] = &ipq806x_sfab_a_clk,
+	[RPM_SFPB_CLK] = &ipq806x_sfpb_clk,
+	[RPM_SFPB_A_CLK] = &ipq806x_sfpb_a_clk,
+	[RPM_NSS_FABRIC_0_CLK] = &ipq806x_nss_fabric_0_clk,
+	[RPM_NSS_FABRIC_0_A_CLK] = &ipq806x_nss_fabric_0_a_clk,
+	[RPM_NSS_FABRIC_1_CLK] = &ipq806x_nss_fabric_1_clk,
+	[RPM_NSS_FABRIC_1_A_CLK] = &ipq806x_nss_fabric_1_a_clk,
+};
+
+static const struct rpm_clk_desc rpm_clk_ipq806x = {
+	.clks = ipq806x_clks,
+	.num_clks = ARRAY_SIZE(ipq806x_clks),
+};
+
 static const struct of_device_id rpm_clk_match_table[] = {
 	{ .compatible = "qcom,rpmcc-msm8660", .data = &rpm_clk_msm8660 },
 	{ .compatible = "qcom,rpmcc-apq8060", .data = &rpm_clk_msm8660 },
 	{ .compatible = "qcom,rpmcc-apq8064", .data = &rpm_clk_apq8064 },
+	{ .compatible = "qcom,rpmcc-ipq806x", .data = &rpm_clk_ipq806x },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, rpm_clk_match_table);
diff --git a/include/dt-bindings/clock/qcom,rpmcc.h b/include/dt-bindings/clock/qcom,rpmcc.h
index 8e3095720552..ae74c43c485d 100644
--- a/include/dt-bindings/clock/qcom,rpmcc.h
+++ b/include/dt-bindings/clock/qcom,rpmcc.h
@@ -37,6 +37,10 @@
 #define RPM_XO_A0				27
 #define RPM_XO_A1				28
 #define RPM_XO_A2				29
+#define RPM_NSS_FABRIC_0_CLK			30
+#define RPM_NSS_FABRIC_0_A_CLK			31
+#define RPM_NSS_FABRIC_1_CLK			32
+#define RPM_NSS_FABRIC_1_A_CLK			33
 
 /* SMD RPM clocks */
 #define RPM_SMD_XO_CLK_SRC				0
-- 
2.25.0

Re: [PATCH v2] clk: qcom: clk-rpm: add missing rpm clk for ipq806x

[Rob Herring]

On Wed, 26 Feb 2020 22:48:12 +0100, Ansuel Smith wrote:
> Add missing definition of rpm clk for ipq806x soc
> 
> Signed-off-by: John Crispin <john@phrozen.org>
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> Acked-by: John Crispin <john@phrozen.org>
> ---
>  .../devicetree/bindings/clock/qcom,rpmcc.txt  |  1 +
>  drivers/clk/qcom/clk-rpm.c                    | 35 +++++++++++++++++++
>  include/dt-bindings/clock/qcom,rpmcc.h        |  4 +++
>  3 files changed, 40 insertions(+)
> 

Acked-by: Rob Herring <robh@kernel.org>

[PATCH v9 1/2] net: mdio: add ipq8064 mdio driver

[Ansuel Smith]

Currently ipq806x soc use generic bitbang driver to
comunicate with the gmac ethernet interface.
Add a dedicated driver created by chunkeey to fix this.

Co-developed-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
Changes in v9:
- Use device_node_to_regmap instead of 
  syscon_node_to_regmap

Changes in v8:
- Drop syscon_regmap_lookup_by_phandle and make
  clock definition in dts mandatory

Changes in v7:
- Add myself as module author and copyright
- Reduced usleep_range to 8-10 as suggested by chunkeey

Changes in v6:
- Fix error in commit description
- Add co-developed tag

Changes in v5:
- Rename define to more rappresentative name

Changes in v4:
- Fix wrong print value in dev_err

Changes in v3:
- Fix wrong return logic on error

Changes in v2:
- Use regmap_read_poll_timeout
- Reject clause 45

 drivers/net/phy/Kconfig        |   8 ++
 drivers/net/phy/Makefile       |   1 +
 drivers/net/phy/mdio-ipq8064.c | 166 +++++++++++++++++++++++++++++++++
 3 files changed, 175 insertions(+)
 create mode 100644 drivers/net/phy/mdio-ipq8064.c

diff --git a/drivers/net/phy/Kconfig b/drivers/net/phy/Kconfig
index 9dabe03a668c..ec2a5493a7e8 100644
--- a/drivers/net/phy/Kconfig
+++ b/drivers/net/phy/Kconfig
@@ -157,6 +157,14 @@ config MDIO_I2C
 
 	  This is library mode.
 
+config MDIO_IPQ8064
+	tristate "Qualcomm IPQ8064 MDIO interface support"
+	depends on HAS_IOMEM && OF_MDIO
+	depends on MFD_SYSCON
+	help
+	  This driver supports the MDIO interface found in the network
+	  interface units of the IPQ8064 SoC
+
 config MDIO_MOXART
 	tristate "MOXA ART MDIO interface support"
 	depends on ARCH_MOXART || COMPILE_TEST
diff --git a/drivers/net/phy/Makefile b/drivers/net/phy/Makefile
index fe5badf13b65..8f02bd2089f3 100644
--- a/drivers/net/phy/Makefile
+++ b/drivers/net/phy/Makefile
@@ -36,6 +36,7 @@ obj-$(CONFIG_MDIO_CAVIUM)	+= mdio-cavium.o
 obj-$(CONFIG_MDIO_GPIO)		+= mdio-gpio.o
 obj-$(CONFIG_MDIO_HISI_FEMAC)	+= mdio-hisi-femac.o
 obj-$(CONFIG_MDIO_I2C)		+= mdio-i2c.o
+obj-$(CONFIG_MDIO_IPQ8064)	+= mdio-ipq8064.o
 obj-$(CONFIG_MDIO_MOXART)	+= mdio-moxart.o
 obj-$(CONFIG_MDIO_MSCC_MIIM)	+= mdio-mscc-miim.o
 obj-$(CONFIG_MDIO_OCTEON)	+= mdio-octeon.o
diff --git a/drivers/net/phy/mdio-ipq8064.c b/drivers/net/phy/mdio-ipq8064.c
new file mode 100644
index 000000000000..1bd18857e1c5
--- /dev/null
+++ b/drivers/net/phy/mdio-ipq8064.c
@@ -0,0 +1,166 @@
+// SPDX-License-Identifier: GPL-2.0
+/* Qualcomm IPQ8064 MDIO interface driver
+ *
+ * Copyright (C) 2019 Christian Lamparter <chunkeey@gmail.com>
+ * Copyright (C) 2020 Ansuel Smith <ansuelsmth@gmail.com>
+ */
+
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/regmap.h>
+#include <linux/of_mdio.h>
+#include <linux/phy.h>
+#include <linux/platform_device.h>
+#include <linux/mfd/syscon.h>
+
+/* MII address register definitions */
+#define MII_ADDR_REG_ADDR                       0x10
+#define MII_BUSY                                BIT(0)
+#define MII_WRITE                               BIT(1)
+#define MII_CLKRANGE_60_100M                    (0 << 2)
+#define MII_CLKRANGE_100_150M                   (1 << 2)
+#define MII_CLKRANGE_20_35M                     (2 << 2)
+#define MII_CLKRANGE_35_60M                     (3 << 2)
+#define MII_CLKRANGE_150_250M                   (4 << 2)
+#define MII_CLKRANGE_250_300M                   (5 << 2)
+#define MII_CLKRANGE_MASK			GENMASK(4, 2)
+#define MII_REG_SHIFT				6
+#define MII_REG_MASK				GENMASK(10, 6)
+#define MII_ADDR_SHIFT				11
+#define MII_ADDR_MASK				GENMASK(15, 11)
+
+#define MII_DATA_REG_ADDR                       0x14
+
+#define MII_MDIO_DELAY_USEC                     (1000)
+#define MII_MDIO_RETRY_MSEC                     (10)
+
+struct ipq8064_mdio {
+	struct regmap *base; /* NSS_GMAC0_BASE */
+};
+
+static int
+ipq8064_mdio_wait_busy(struct ipq8064_mdio *priv)
+{
+	u32 busy;
+
+	return regmap_read_poll_timeout(priv->base, MII_ADDR_REG_ADDR, busy,
+					!(busy & MII_BUSY), MII_MDIO_DELAY_USEC,
+					MII_MDIO_RETRY_MSEC * USEC_PER_MSEC);
+}
+
+static int
+ipq8064_mdio_read(struct mii_bus *bus, int phy_addr, int reg_offset)
+{
+	u32 miiaddr = MII_BUSY | MII_CLKRANGE_250_300M;
+	struct ipq8064_mdio *priv = bus->priv;
+	u32 ret_val;
+	int err;
+
+	/* Reject clause 45 */
+	if (reg_offset & MII_ADDR_C45)
+		return -EOPNOTSUPP;
+
+	miiaddr |= ((phy_addr << MII_ADDR_SHIFT) & MII_ADDR_MASK) |
+		   ((reg_offset << MII_REG_SHIFT) & MII_REG_MASK);
+
+	regmap_write(priv->base, MII_ADDR_REG_ADDR, miiaddr);
+	usleep_range(8, 10);
+
+	err = ipq8064_mdio_wait_busy(priv);
+	if (err)
+		return err;
+
+	regmap_read(priv->base, MII_DATA_REG_ADDR, &ret_val);
+	return (int)ret_val;
+}
+
+static int
+ipq8064_mdio_write(struct mii_bus *bus, int phy_addr, int reg_offset, u16 data)
+{
+	u32 miiaddr = MII_WRITE | MII_BUSY | MII_CLKRANGE_250_300M;
+	struct ipq8064_mdio *priv = bus->priv;
+
+	/* Reject clause 45 */
+	if (reg_offset & MII_ADDR_C45)
+		return -EOPNOTSUPP;
+
+	regmap_write(priv->base, MII_DATA_REG_ADDR, data);
+
+	miiaddr |= ((phy_addr << MII_ADDR_SHIFT) & MII_ADDR_MASK) |
+		   ((reg_offset << MII_REG_SHIFT) & MII_REG_MASK);
+
+	regmap_write(priv->base, MII_ADDR_REG_ADDR, miiaddr);
+	usleep_range(8, 10);
+
+	return ipq8064_mdio_wait_busy(priv);
+}
+
+static int
+ipq8064_mdio_probe(struct platform_device *pdev)
+{
+	struct device_node *np = pdev->dev.of_node;
+	struct ipq8064_mdio *priv;
+	struct mii_bus *bus;
+	int ret;
+
+	bus = devm_mdiobus_alloc_size(&pdev->dev, sizeof(*priv));
+	if (!bus)
+		return -ENOMEM;
+
+	bus->name = "ipq8064_mdio_bus";
+	bus->read = ipq8064_mdio_read;
+	bus->write = ipq8064_mdio_write;
+	snprintf(bus->id, MII_BUS_ID_SIZE, "%s-mii", dev_name(&pdev->dev));
+	bus->parent = &pdev->dev;
+
+	priv = bus->priv;
+	priv->base = device_node_to_regmap(np);
+	if (IS_ERR(priv->base)) {
+		if (priv->base == ERR_PTR(-EPROBE_DEFER))
+			return -EPROBE_DEFER;
+
+		dev_err(&pdev->dev, "error getting device regmap, error=%pe\n",
+			priv->base);
+		return PTR_ERR(priv->base);
+	}
+
+	ret = of_mdiobus_register(bus, np);
+	if (ret)
+		return ret;
+
+	platform_set_drvdata(pdev, bus);
+	return 0;
+}
+
+static int
+ipq8064_mdio_remove(struct platform_device *pdev)
+{
+	struct mii_bus *bus = platform_get_drvdata(pdev);
+
+	mdiobus_unregister(bus);
+
+	return 0;
+}
+
+static const struct of_device_id ipq8064_mdio_dt_ids[] = {
+	{ .compatible = "qcom,ipq8064-mdio" },
+	{ }
+};
+MODULE_DEVICE_TABLE(of, ipq8064_mdio_dt_ids);
+
+static struct platform_driver ipq8064_mdio_driver = {
+	.probe = ipq8064_mdio_probe,
+	.remove = ipq8064_mdio_remove,
+	.driver = {
+		.name = "ipq8064-mdio",
+		.of_match_table = ipq8064_mdio_dt_ids,
+	},
+};
+
+module_platform_driver(ipq8064_mdio_driver);
+
+MODULE_DESCRIPTION("Qualcomm IPQ8064 MDIO interface driver");
+MODULE_AUTHOR("Christian Lamparter <chunkeey@gmail.com>");
+MODULE_AUTHOR("Ansuel Smith <ansuelsmth@gmail.com>");
+MODULE_LICENSE("GPL");
-- 
2.25.0

[PATCH v9 2/2] dt-bindings: net: Add ipq806x mdio bindings

[Ansuel Smith]

Add documentations for ipq806x mdio driver.

Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
---
Changes in v9:
- Update License
- Drop syscon

Changes in v8:
- Fix error in dtb check
- Remove not needed reset definition from example
- Add include header for ipq806x clocks
- Fix wrong License type

Changes in v7:
- Fix dt_binding_check problem

 .../bindings/net/qcom,ipq8064-mdio.yaml       | 53 +++++++++++++++++++
 1 file changed, 53 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/net/qcom,ipq8064-mdio.yaml

diff --git a/Documentation/devicetree/bindings/net/qcom,ipq8064-mdio.yaml b/Documentation/devicetree/bindings/net/qcom,ipq8064-mdio.yaml
new file mode 100644
index 000000000000..b9f90081046f
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/qcom,ipq8064-mdio.yaml
@@ -0,0 +1,53 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/net/qcom,ipq8064-mdio.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm ipq806x MDIO bus controller
+
+maintainers:
+  - Ansuel Smith <ansuelsmth@gmail.com>
+
+description:
+  The ipq806x soc have a MDIO dedicated controller that is
+  used to communicate with the gmac phy connected.
+
+allOf:
+  - $ref: "mdio.yaml#"
+
+properties:
+  compatible:
+    const: qcom,ipq8064-mdio
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - "#address-cells"
+  - "#size-cells"
+
+examples:
+  - |
+    #include <dt-bindings/clock/qcom,gcc-ipq806x.h>
+
+    mdio0: mdio@37000000 {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        compatible = "qcom,ipq8064-mdio";
+        reg = <0x37000000 0x200000>;
+
+        clocks = <&gcc GMAC_CORE1_CLK>;
+
+        switch@10 {
+            compatible = "qca,qca8337";
+            /* ... */
+        };
+    };
-- 
2.25.0

Re: [PATCH v9 1/2] net: mdio: add ipq8064 mdio driver

[David Miller]

From: Ansuel Smith <ansuelsmth@gmail.com>
Date: Wed,  4 Mar 2020 22:38:32 +0100

> Currently ipq806x soc use generic bitbang driver to
> comunicate with the gmac ethernet interface.
> Add a dedicated driver created by chunkeey to fix this.
> 
> Co-developed-by: Christian Lamparter <chunkeey@gmail.com>
> Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

Applied to net-next.

Re: [PATCH v9 2/2] dt-bindings: net: Add ipq806x mdio bindings

[David Miller]

From: Ansuel Smith <ansuelsmth@gmail.com>
Date: Wed,  4 Mar 2020 22:38:33 +0100

> Add documentations for ipq806x mdio driver.
> 
> Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>

Applied to net-next.

Re: [PATCH v2] clk: qcom: clk-rpm: add missing rpm clk for ipq806x

[Stephen Boyd]

Quoting Rob Herring (2020-03-03 06:59:20)
> On Wed, 26 Feb 2020 22:48:12 +0100, Ansuel Smith wrote:
> > Add missing definition of rpm clk for ipq806x soc
> > 
> > Signed-off-by: John Crispin <john@phrozen.org>
> > Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com>
> > Acked-by: John Crispin <john@phrozen.org>
> > ---
> >  .../devicetree/bindings/clock/qcom,rpmcc.txt  |  1 +
> >  drivers/clk/qcom/clk-rpm.c                    | 35 +++++++++++++++++++
> >  include/dt-bindings/clock/qcom,rpmcc.h        |  4 +++
> >  3 files changed, 40 insertions(+)
> > 
> 
> Acked-by: Rob Herring <robh@kernel.org>

Ansuel, can you send this again and address it To: somebody like me? My
MUA fails at getting emails when they're addressed to nobody.