[PATCH RESEND v2 0/7] vf610: Add USB support

[PATCH RESEND v2 0/7] vf610: Add USB support

[Stefan Agner]

This patchset adds USB support for Vybrid VF610 SoC. It extends the
clock framework to support the USB PHY cocks, extends the device
tree files and adds support for the non-core registers in the
usbmisc_imx driver.

This patchset needs the eSDHC registers length fix available in
Shawn's for-next branch, since that overlapped by chance the USB
areas.

The whole patchset proved to be working on a Colibri VF61 and
Freescale Tower VF65GS10. The first USB controller runs in
peripheral mode. I could successfully use RNDIS, however with some
stability issues: Suddenly the other side was not reachable anymore
and the interface needed to brought down and back up again. I'm
still investigating this.

The second USB controller, running in USB host mode, showed errors
when connecting devices behind a USB hub:

[  215.163507] usb usb1-port1: cannot reset (err = -32)
[  215.170498] usb usb1-port1: cannot reset (err = -32)
[  215.185120] usb usb1-port1: cannot reset (err = -32)
[  215.191345] usb usb1-port1: cannot reset (err = -32)
[  215.202487] usb usb1-port1: cannot reset (err = -32)
[  215.207718] usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
[  215.219317] usb usb1-port1: unable to enumerate USB device

By extending the PHY driver with the MXS_PHY_NEED_IP_FIX flag, this
issue is resolved.

Resend, also added Felipe Balbi this time, sorry about that. I think
I only miss the Ack/Review from you here and then things should be
fine.

Changes in v2:
- Extended usbmisc_imx to support multiple instances
- Update DT documentation and compatible strings where necessary
- Add USB PHY flag MXS_PHY_NEED_IP_FIX
- Added patches to enable USB on Tower

Stefan Agner (7):
  ARM: dts: vf610: Add USB PHY and controller
  ARM: imx: clk-vf610: Add USBPHY clocks
  usb: phy: mxs: Add VF610 USB PHY support
  ARM: dts: vf610: Add usbmisc for non-core registers
  chipidea: usbmisc_imx: Add USB support for VF610 SoCs
  ARM: dts: vf610-colibri: Add USB support
  ARM: dts: vf610-twr: Add USB support

 Documentation/devicetree/bindings/usb/mxs-phy.txt  |  1 +
 .../devicetree/bindings/usb/usbmisc-imx.txt        |  1 +
 arch/arm/boot/dts/vf610-colibri.dts                | 10 ++++
 arch/arm/boot/dts/vf610-twr.dts                    | 10 ++++
 arch/arm/boot/dts/vf610.dtsi                       | 60 ++++++++++++++++++++--
 arch/arm/mach-imx/clk-vf610.c                      | 12 ++++-
 drivers/usb/chipidea/ci_hdrc_imx.c                 |  8 +++
 drivers/usb/chipidea/ci_hdrc_imx.h                 |  1 +
 drivers/usb/chipidea/usbmisc_imx.c                 | 52 +++++++++++++++----
 drivers/usb/phy/phy-mxs-usb.c                      |  6 +++
 include/dt-bindings/clock/vf610-clock.h            |  5 +-
 11 files changed, 149 insertions(+), 17 deletions(-)

-- 
2.0.4

[PATCH RESEND v2 1/7] ARM: dts: vf610: Add USB PHY and controller

[Stefan Agner]

This adds USB PHY and USB controller nodes. Vybrid SoCs have two
independent USB cores which each supports DR (dual role). However,
real OTG is not supported since the OTG ID pin is not available.

The PHYs are located within the anadig register range, hence we need
to change the length of the anadig registers.

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 arch/arm/boot/dts/vf610.dtsi | 46 +++++++++++++++++++++++++++++++++++++++++---
 1 file changed, 43 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/vf610.dtsi b/arch/arm/boot/dts/vf610.dtsi
index 6a6190c..f36acb5 100644
--- a/arch/arm/boot/dts/vf610.dtsi
+++ b/arch/arm/boot/dts/vf610.dtsi
@@ -25,6 +25,8 @@
 		gpio2 = &gpio3;
 		gpio3 = &gpio4;
 		gpio4 = &gpio5;
+		usbphy0 = &usbphy0;
+		usbphy1 = &usbphy1;
 	};
 
 	cpus {
@@ -285,9 +287,25 @@
 				gpio-ranges = <&iomuxc 0 128 7>;
 			};
 
-			anatop@40050000 {
-				compatible = "fsl,vf610-anatop";
-				reg = <0x40050000 0x1000>;
+			anatop: anatop@40050000 {
+				compatible = "fsl,vf610-anatop", "syscon";
+				reg = <0x40050000 0x400>;
+			};
+
+			usbphy0: usbphy@40050800 {
+				compatible = "fsl,vf610-usbphy";
+				reg = <0x40050800 0x400>;
+				interrupts = <0 50 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clks VF610_CLK_USBPHY0>;
+				fsl,anatop = <&anatop>;
+			};
+
+			usbphy1: usbphy@40050c00 {
+				compatible = "fsl,vf610-usbphy";
+				reg = <0x40050c00 0x400>;
+				interrupts = <0 51 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clks VF610_CLK_USBPHY1>;
+				fsl,anatop = <&anatop>;
 			};
 
 			i2c0: i2c@40066000 {
@@ -309,6 +327,18 @@
 				reg = <0x4006b000 0x1000>;
 				#clock-cells = <1>;
 			};
+
+			usbdev0: usb@40034000 {
+				compatible = "fsl,vf610-usb", "fsl,imx27-usb";
+				reg = <0x40034000 0x800>;
+				interrupts = <0 75 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clks VF610_CLK_USBC0>;
+				fsl,usbphy = <&usbphy0>;
+				dr_mode = "peripheral";
+				status = "disabled";
+			};
+
+
 		};
 
 		aips1: aips-bus@40080000 {
@@ -371,6 +401,16 @@
 				status = "disabled";
 			};
 
+			usbh1: usb@400b4000 {
+				compatible = "fsl,vf610-usb", "fsl,imx27-usb";
+				reg = <0x400b4000 0x800>;
+				interrupts = <0 76 IRQ_TYPE_LEVEL_HIGH>;
+				clocks = <&clks VF610_CLK_USBC1>;
+				fsl,usbphy = <&usbphy1>;
+				dr_mode = "host";
+				status = "disabled";
+			};
+
 			ftm: ftm@400b8000 {
 				compatible = "fsl,ftm-timer";
 				reg = <0x400b8000 0x1000 0x400b9000 0x1000>;
-- 
2.0.4

[PATCH RESEND v2 2/7] ARM: imx: clk-vf610: Add USBPHY clocks

[Stefan Agner]

This commit adds PLL7 which is required for USBPHY1. It also adds
the USB PHY and USB Controller clocks and the gates to enable them.

Acked-by: Jingchang Lu <jingchang.lu@freescale.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 arch/arm/mach-imx/clk-vf610.c           | 12 ++++++++++--
 include/dt-bindings/clock/vf610-clock.h |  5 ++++-
 2 files changed, 14 insertions(+), 3 deletions(-)

diff --git a/arch/arm/mach-imx/clk-vf610.c b/arch/arm/mach-imx/clk-vf610.c
index 22dc3ee..159c5c4 100644
--- a/arch/arm/mach-imx/clk-vf610.c
+++ b/arch/arm/mach-imx/clk-vf610.c
@@ -58,6 +58,8 @@
 #define PFD_PLL1_BASE		(anatop_base + 0x2b0)
 #define PFD_PLL2_BASE		(anatop_base + 0x100)
 #define PFD_PLL3_BASE		(anatop_base + 0xf0)
+#define PLL3_CTRL		(anatop_base + 0x10)
+#define PLL7_CTRL		(anatop_base + 0x20)
 
 static void __iomem *anatop_base;
 static void __iomem *ccm_base;
@@ -148,6 +150,9 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
 	clk[VF610_CLK_PLL5_MAIN] = imx_clk_fixed_factor("pll5_main", "fast_clk_sel", 125, 6);
 	/* pll6: default 960Mhz */
 	clk[VF610_CLK_PLL6_MAIN] = imx_clk_fixed_factor("pll6_main", "fast_clk_sel", 40, 1);
+	/* pll7: USB1 PLL at 480MHz */
+	clk[VF610_CLK_PLL7_MAIN] = imx_clk_pllv3(IMX_PLLV3_USB,	"pll7_main", "fast_clk_sel", PLL7_CTRL, 0x2);
+
 	clk[VF610_CLK_PLL1_PFD_SEL] = imx_clk_mux("pll1_pfd_sel", CCM_CCSR, 16, 3, pll1_sels, 5);
 	clk[VF610_CLK_PLL2_PFD_SEL] = imx_clk_mux("pll2_pfd_sel", CCM_CCSR, 19, 3, pll2_sels, 5);
 	clk[VF610_CLK_SYS_SEL] = imx_clk_mux("sys_sel", CCM_CCSR, 0, 3, sys_sels, ARRAY_SIZE(sys_sels));
@@ -160,8 +165,11 @@ static void __init vf610_clocks_init(struct device_node *ccm_node)
 	clk[VF610_CLK_PLL4_MAIN_DIV] = clk_register_divider_table(NULL, "pll4_main_div", "pll4_main", 0, CCM_CACRR, 6, 3, 0, pll4_main_div_table, &imx_ccm_lock);
 	clk[VF610_CLK_PLL6_MAIN_DIV] = imx_clk_divider("pll6_main_div", "pll6_main", CCM_CACRR, 21, 1);
 
-	clk[VF610_CLK_USBC0] = imx_clk_gate2("usbc0", "pll3_main", CCM_CCGR1, CCM_CCGRx_CGn(4));
-	clk[VF610_CLK_USBC1] = imx_clk_gate2("usbc1", "pll3_main", CCM_CCGR7, CCM_CCGRx_CGn(4));
+	clk[VF610_CLK_USBPHY0] = imx_clk_gate("usbphy0", "pll3_main", PLL3_CTRL, 6);
+	clk[VF610_CLK_USBPHY1] = imx_clk_gate("usbphy1", "pll7_main", PLL7_CTRL, 6);
+
+	clk[VF610_CLK_USBC0] = imx_clk_gate2("usbc0", "ipg_bus", CCM_CCGR1, CCM_CCGRx_CGn(4));
+	clk[VF610_CLK_USBC1] = imx_clk_gate2("usbc1", "ipg_bus", CCM_CCGR7, CCM_CCGRx_CGn(4));
 
 	clk[VF610_CLK_QSPI0_SEL] = imx_clk_mux("qspi0_sel", CCM_CSCMR1, 22, 2, qspi_sels, 4);
 	clk[VF610_CLK_QSPI0_EN] = imx_clk_gate("qspi0_en", "qspi0_sel", CCM_CSCDR3, 4);
diff --git a/include/dt-bindings/clock/vf610-clock.h b/include/dt-bindings/clock/vf610-clock.h
index a916029..6593757 100644
--- a/include/dt-bindings/clock/vf610-clock.h
+++ b/include/dt-bindings/clock/vf610-clock.h
@@ -164,6 +164,9 @@
 #define VF610_CLK_DMAMUX1		151
 #define VF610_CLK_DMAMUX2		152
 #define VF610_CLK_DMAMUX3		153
-#define VF610_CLK_END			154
+#define VF610_CLK_PLL7_MAIN		154
+#define VF610_CLK_USBPHY0		155
+#define VF610_CLK_USBPHY1		156
+#define VF610_CLK_END			157
 
 #endif /* __DT_BINDINGS_CLOCK_VF610_H */
-- 
2.0.4

[PATCH RESEND v2 3/7] usb: phy: mxs: Add VF610 USB PHY support

[Stefan Agner]

This adds support for the USB PHY in Vybrid VF610. We assume that
the disconnection without VBUS is also needed for Vybrid.

Tests showed, without MXS_PHY_NEED_IP_FIX, enumeration of devices
behind a USB Hub fails with errors:

[  215.163507] usb usb1-port1: cannot reset (err = -32)
[  215.170498] usb usb1-port1: cannot reset (err = -32)
[  215.185120] usb usb1-port1: cannot reset (err = -32)
[  215.191345] usb usb1-port1: cannot reset (err = -32)
[  215.202487] usb usb1-port1: cannot reset (err = -32)
[  215.207718] usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
[  215.219317] usb usb1-port1: unable to enumerate USB device

Hence we also enable the MXS_PHY_NEED_IP_FIX flag.

Acked-by: Peter Chen <peter.chen@freescale.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 Documentation/devicetree/bindings/usb/mxs-phy.txt | 1 +
 drivers/usb/phy/phy-mxs-usb.c                     | 6 ++++++
 2 files changed, 7 insertions(+)

diff --git a/Documentation/devicetree/bindings/usb/mxs-phy.txt b/Documentation/devicetree/bindings/usb/mxs-phy.txt
index cef181a..fe3eed8 100644
--- a/Documentation/devicetree/bindings/usb/mxs-phy.txt
+++ b/Documentation/devicetree/bindings/usb/mxs-phy.txt
@@ -5,6 +5,7 @@ Required properties:
 	* "fsl,imx23-usbphy" for imx23 and imx28
 	* "fsl,imx6q-usbphy" for imx6dq and imx6dl
 	* "fsl,imx6sl-usbphy" for imx6sl
+	* "fsl,vf610-usbphy" for Vybrid vf610
   "fsl,imx23-usbphy" is still a fallback for other strings
 - reg: Should contain registers location and length
 - interrupts: Should contain phy interrupt
diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
index c42bdf0..8c2f23b 100644
--- a/drivers/usb/phy/phy-mxs-usb.c
+++ b/drivers/usb/phy/phy-mxs-usb.c
@@ -125,10 +125,16 @@ static const struct mxs_phy_data imx6sl_phy_data = {
 		MXS_PHY_NEED_IP_FIX,
 };
 
+static const struct mxs_phy_data vf610_phy_data = {
+	.flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
+		MXS_PHY_NEED_IP_FIX,
+};
+
 static const struct of_device_id mxs_phy_dt_ids[] = {
 	{ .compatible = "fsl,imx6sl-usbphy", .data = &imx6sl_phy_data, },
 	{ .compatible = "fsl,imx6q-usbphy", .data = &imx6q_phy_data, },
 	{ .compatible = "fsl,imx23-usbphy", .data = &imx23_phy_data, },
+	{ .compatible = "fsl,vf610-usbphy", .data = &vf610_phy_data, },
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);
-- 
2.0.4

[PATCH RESEND v2 4/7] ARM: dts: vf610: Add usbmisc for non-core registers

[Stefan Agner]

Add device tree node for usbmisc which controls the non-core USB
registers. This is required to use the property to disable the over-
current detection.

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 arch/arm/boot/dts/vf610.dtsi | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/vf610.dtsi b/arch/arm/boot/dts/vf610.dtsi
index f36acb5..a49d739 100644
--- a/arch/arm/boot/dts/vf610.dtsi
+++ b/arch/arm/boot/dts/vf610.dtsi
@@ -334,11 +334,17 @@
 				interrupts = <0 75 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks VF610_CLK_USBC0>;
 				fsl,usbphy = <&usbphy0>;
+				fsl,usbmisc = <&usbmisc0 0>;
 				dr_mode = "peripheral";
 				status = "disabled";
 			};
 
-
+			usbmisc0: usb@40034800 {
+				#index-cells = <1>;
+				compatible = "fsl,vf610-usbmisc";
+				reg = <0x40034800 0x200>;
+				clocks = <&clks VF610_CLK_USBC0>;
+			};
 		};
 
 		aips1: aips-bus@40080000 {
@@ -407,10 +413,18 @@
 				interrupts = <0 76 IRQ_TYPE_LEVEL_HIGH>;
 				clocks = <&clks VF610_CLK_USBC1>;
 				fsl,usbphy = <&usbphy1>;
+				fsl,usbmisc = <&usbmisc1 0>;
 				dr_mode = "host";
 				status = "disabled";
 			};
 
+			usbmisc1: usb@400b4800 {
+				#index-cells = <1>;
+				compatible = "fsl,vf610-usbmisc";
+				reg = <0x400b4800 0x200>;
+				clocks = <&clks VF610_CLK_USBC1>;
+			};
+
 			ftm: ftm@400b8000 {
 				compatible = "fsl,ftm-timer";
 				reg = <0x400b8000 0x1000 0x400b9000 0x1000>;
-- 
2.0.4

[PATCH RESEND v2 5/7] chipidea: usbmisc_imx: Add USB support for VF610 SoCs

[Stefan Agner]

This adds Vybrid VF610 SoC support. The IP is very similar to i.MX6,
however, the non-core registers are spread in two different register
areas. Hence we support multiple instances of the USB misc driver
and add the driver instance to the imx_usbmisc_data structure.

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 .../devicetree/bindings/usb/usbmisc-imx.txt        |  1 +
 drivers/usb/chipidea/ci_hdrc_imx.c                 |  8 ++++
 drivers/usb/chipidea/ci_hdrc_imx.h                 |  1 +
 drivers/usb/chipidea/usbmisc_imx.c                 | 52 +++++++++++++++++-----
 4 files changed, 51 insertions(+), 11 deletions(-)

diff --git a/Documentation/devicetree/bindings/usb/usbmisc-imx.txt b/Documentation/devicetree/bindings/usb/usbmisc-imx.txt
index 97ce94e..c101a4b 100644
--- a/Documentation/devicetree/bindings/usb/usbmisc-imx.txt
+++ b/Documentation/devicetree/bindings/usb/usbmisc-imx.txt
@@ -4,6 +4,7 @@ Required properties:
 - #index-cells: Cells used to descibe usb controller index. Should be <1>
 - compatible: Should be one of below:
 	"fsl,imx6q-usbmisc" for imx6q
+	"fsl,vf610-usbmisc" for Vybrid vf610
 - reg: Should contain registers location and length
 
 Examples:
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.c b/drivers/usb/chipidea/ci_hdrc_imx.c
index 2e58f8d..9af12b4 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.c
+++ b/drivers/usb/chipidea/ci_hdrc_imx.c
@@ -54,6 +54,7 @@ struct ci_hdrc_imx_data {
 
 static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
 {
+	struct platform_device *misc_pdev;
 	struct device_node *np = dev->of_node;
 	struct of_phandle_args args;
 	struct imx_usbmisc_data *data;
@@ -79,8 +80,15 @@ static struct imx_usbmisc_data *usbmisc_get_init_data(struct device *dev)
 	}
 
 	data->index = args.args[0];
+
+	misc_pdev = of_find_device_by_node(args.np);
 	of_node_put(args.np);
 
+	if (!misc_pdev)
+		return ERR_PTR(-EPROBE_DEFER);
+
+	data->dev = &misc_pdev->dev;
+
 	if (of_find_property(np, "disable-over-current", NULL))
 		data->disable_oc = 1;
 
diff --git a/drivers/usb/chipidea/ci_hdrc_imx.h b/drivers/usb/chipidea/ci_hdrc_imx.h
index 996ec93..4ed828f 100644
--- a/drivers/usb/chipidea/ci_hdrc_imx.h
+++ b/drivers/usb/chipidea/ci_hdrc_imx.h
@@ -13,6 +13,7 @@
 #define __DRIVER_USB_CHIPIDEA_CI_HDRC_IMX_H
 
 struct imx_usbmisc_data {
+	struct device *dev;
 	int index;
 
 	unsigned int disable_oc:1; /* over current detect disabled */
diff --git a/drivers/usb/chipidea/usbmisc_imx.c b/drivers/usb/chipidea/usbmisc_imx.c
index 85293b8..926c997 100644
--- a/drivers/usb/chipidea/usbmisc_imx.c
+++ b/drivers/usb/chipidea/usbmisc_imx.c
@@ -57,6 +57,8 @@
 
 #define MX6_BM_OVER_CUR_DIS		BIT(7)
 
+#define VF610_OVER_CUR_DIS		BIT(7)
+
 struct usbmisc_ops {
 	/* It's called once when probe a usb device */
 	int (*init)(struct imx_usbmisc_data *data);
@@ -71,10 +73,9 @@ struct imx_usbmisc {
 	const struct usbmisc_ops *ops;
 };
 
-static struct imx_usbmisc *usbmisc;
-
 static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
 {
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 	unsigned long flags;
 	u32 val = 0;
 
@@ -108,6 +109,7 @@ static int usbmisc_imx25_init(struct imx_usbmisc_data *data)
 
 static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
 {
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 	void __iomem *reg;
 	unsigned long flags;
 	u32 val;
@@ -130,6 +132,7 @@ static int usbmisc_imx25_post(struct imx_usbmisc_data *data)
 
 static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
 {
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 	unsigned long flags;
 	u32 val;
 
@@ -160,6 +163,7 @@ static int usbmisc_imx27_init(struct imx_usbmisc_data *data)
 
 static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
 {
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 	void __iomem *reg = NULL;
 	unsigned long flags;
 	u32 val = 0;
@@ -204,6 +208,7 @@ static int usbmisc_imx53_init(struct imx_usbmisc_data *data)
 
 static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
 {
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
 	unsigned long flags;
 	u32 reg;
 
@@ -221,6 +226,26 @@ static int usbmisc_imx6q_init(struct imx_usbmisc_data *data)
 	return 0;
 }
 
+static int usbmisc_vf610_init(struct imx_usbmisc_data *data)
+{
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+	u32 reg;
+
+	/*
+	 * Vybrid only has one misc register set, but in two different
+	 * areas. These is reflected in two instances of this driver.
+	 */
+	if (data->index >= 1)
+		return -EINVAL;
+
+	if (data->disable_oc) {
+		reg = readl(usbmisc->base);
+		writel(reg | VF610_OVER_CUR_DIS, usbmisc->base);
+	}
+
+	return 0;
+}
+
 static const struct usbmisc_ops imx25_usbmisc_ops = {
 	.init = usbmisc_imx25_init,
 	.post = usbmisc_imx25_post,
@@ -238,10 +263,14 @@ static const struct usbmisc_ops imx6q_usbmisc_ops = {
 	.init = usbmisc_imx6q_init,
 };
 
+static const struct usbmisc_ops vf610_usbmisc_ops = {
+	.init = usbmisc_vf610_init,
+};
+
 int imx_usbmisc_init(struct imx_usbmisc_data *data)
 {
-	if (!usbmisc)
-		return -EPROBE_DEFER;
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+
 	if (!usbmisc->ops->init)
 		return 0;
 	return usbmisc->ops->init(data);
@@ -250,8 +279,8 @@ EXPORT_SYMBOL_GPL(imx_usbmisc_init);
 
 int imx_usbmisc_init_post(struct imx_usbmisc_data *data)
 {
-	if (!usbmisc)
-		return -EPROBE_DEFER;
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(data->dev);
+
 	if (!usbmisc->ops->post)
 		return 0;
 	return usbmisc->ops->post(data);
@@ -283,6 +312,10 @@ static const struct of_device_id usbmisc_imx_dt_ids[] = {
 		.compatible = "fsl,imx6q-usbmisc",
 		.data = &imx6q_usbmisc_ops,
 	},
+	{
+		.compatible = "fsl,vf610-usbmisc",
+		.data = &vf610_usbmisc_ops,
+	},
 	{ /* sentinel */ }
 };
 MODULE_DEVICE_TABLE(of, usbmisc_imx_dt_ids);
@@ -294,9 +327,6 @@ static int usbmisc_imx_probe(struct platform_device *pdev)
 	int ret;
 	struct of_device_id *tmp_dev;
 
-	if (usbmisc)
-		return -EBUSY;
-
 	data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL);
 	if (!data)
 		return -ENOMEM;
@@ -325,15 +355,15 @@ static int usbmisc_imx_probe(struct platform_device *pdev)
 	tmp_dev = (struct of_device_id *)
 		of_match_device(usbmisc_imx_dt_ids, &pdev->dev);
 	data->ops = (const struct usbmisc_ops *)tmp_dev->data;
-	usbmisc = data;
+	platform_set_drvdata(pdev, data);
 
 	return 0;
 }
 
 static int usbmisc_imx_remove(struct platform_device *pdev)
 {
+	struct imx_usbmisc *usbmisc = dev_get_drvdata(&pdev->dev);
 	clk_disable_unprepare(usbmisc->clk);
-	usbmisc = NULL;
 	return 0;
 }
 
-- 
2.0.4

[PATCH RESEND v2 6/7] ARM: dts: vf610-colibri: Add USB support

[Stefan Agner]

Add USB support for Colibri VF61 modules. The Colibri standard pinout
defines a pin for USB over-current. However, due to lack of pinmux
options, the USB hosts over-current protection signal of the Colibri
standard could not be connected to the PHY's over-current protection.
Hence we need to disable the over-current functionality of the USB
controller.

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 arch/arm/boot/dts/vf610-colibri.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/vf610-colibri.dts b/arch/arm/boot/dts/vf610-colibri.dts
index aecc7db..f2a950d 100644
--- a/arch/arm/boot/dts/vf610-colibri.dts
+++ b/arch/arm/boot/dts/vf610-colibri.dts
@@ -69,6 +69,16 @@
 	status = "okay";
 };
 
+&usbdev0 {
+	disable-over-current;
+	status = "okay";
+};
+
+&usbh1 {
+	disable-over-current;
+	status = "okay";
+};
+
 &iomuxc {
 	vf610-colibri {
 		pinctrl_esdhc1: esdhc1grp {
-- 
2.0.4

[PATCH RESEND v2 7/7] ARM: dts: vf610-twr: Add USB support

[Stefan Agner]

Add USB support for Freescale Vybrid tower. The USB hosts over-current
protection signal is not connected is not connected to the PHY's over-
current protection, hence we need to disable it.

Signed-off-by: Stefan Agner <stefan@agner.ch>
---
 arch/arm/boot/dts/vf610-twr.dts | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/arch/arm/boot/dts/vf610-twr.dts b/arch/arm/boot/dts/vf610-twr.dts
index 11d7334..c709dc3 100644
--- a/arch/arm/boot/dts/vf610-twr.dts
+++ b/arch/arm/boot/dts/vf610-twr.dts
@@ -265,3 +265,13 @@
 	pinctrl-0 = <&pinctrl_uart1>;
 	status = "okay";
 };
+
+&usbdev0 {
+	disable-over-current;
+	status = "okay";
+};
+
+&usbh1 {
+	disable-over-current;
+	status = "okay";
+};
-- 
2.0.4

Re: [PATCH RESEND v2 7/7] ARM: dts: vf610-twr: Add USB support

[Sergei Shtylyov]

Hello.

On 08/19/2014 12:07 AM, Stefan Agner wrote:

> Add USB support for Freescale Vybrid tower. The USB hosts over-current
> protection signal is not connected is not connected to the PHY's over-

    Yes, we all understood that it's not connected, no need to repeat. ;-)

> current protection, hence we need to disable it.

> Signed-off-by: Stefan Agner <stefan@agner.ch>

WBR, Sergei

Re: [PATCH RESEND v2 0/7] vf610: Add USB support

[Peter Chen]

On Mon, Aug 18, 2014 at 10:07:10PM +0200, Stefan Agner wrote:
> This patchset adds USB support for Vybrid VF610 SoC. It extends the
> clock framework to support the USB PHY cocks, extends the device
> tree files and adds support for the non-core registers in the
> usbmisc_imx driver.
> 
> This patchset needs the eSDHC registers length fix available in
> Shawn's for-next branch, since that overlapped by chance the USB
> areas.
> 
> The whole patchset proved to be working on a Colibri VF61 and
> Freescale Tower VF65GS10. The first USB controller runs in
> peripheral mode. I could successfully use RNDIS, however with some
> stability issues: Suddenly the other side was not reachable anymore
> and the interface needed to brought down and back up again. I'm
> still investigating this.
> 
> The second USB controller, running in USB host mode, showed errors
> when connecting devices behind a USB hub:
> 
> [  215.163507] usb usb1-port1: cannot reset (err = -32)
> [  215.170498] usb usb1-port1: cannot reset (err = -32)
> [  215.185120] usb usb1-port1: cannot reset (err = -32)
> [  215.191345] usb usb1-port1: cannot reset (err = -32)
> [  215.202487] usb usb1-port1: cannot reset (err = -32)
> [  215.207718] usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
> [  215.219317] usb usb1-port1: unable to enumerate USB device
> 
> By extending the PHY driver with the MXS_PHY_NEED_IP_FIX flag, this
> issue is resolved.
> 
> Resend, also added Felipe Balbi this time, sorry about that. I think
> I only miss the Ack/Review from you here and then things should be
> fine.
> 
> Changes in v2:
> - Extended usbmisc_imx to support multiple instances
> - Update DT documentation and compatible strings where necessary
> - Add USB PHY flag MXS_PHY_NEED_IP_FIX
> - Added patches to enable USB on Tower
> 
> Stefan Agner (7):
>   ARM: dts: vf610: Add USB PHY and controller
>   ARM: imx: clk-vf610: Add USBPHY clocks
>   usb: phy: mxs: Add VF610 USB PHY support
>   ARM: dts: vf610: Add usbmisc for non-core registers
>   chipidea: usbmisc_imx: Add USB support for VF610 SoCs

This driver change is already at my tree, but it is too late
for 3.17-rc1 when you sent, so I sent it to greg for v3.18.

Peter

>   ARM: dts: vf610-colibri: Add USB support
>   ARM: dts: vf610-twr: Add USB support
> 
>  Documentation/devicetree/bindings/usb/mxs-phy.txt  |  1 +
>  .../devicetree/bindings/usb/usbmisc-imx.txt        |  1 +
>  arch/arm/boot/dts/vf610-colibri.dts                | 10 ++++
>  arch/arm/boot/dts/vf610-twr.dts                    | 10 ++++
>  arch/arm/boot/dts/vf610.dtsi                       | 60 ++++++++++++++++++++--
>  arch/arm/mach-imx/clk-vf610.c                      | 12 ++++-
>  drivers/usb/chipidea/ci_hdrc_imx.c                 |  8 +++
>  drivers/usb/chipidea/ci_hdrc_imx.h                 |  1 +
>  drivers/usb/chipidea/usbmisc_imx.c                 | 52 +++++++++++++++----
>  drivers/usb/phy/phy-mxs-usb.c                      |  6 +++
>  include/dt-bindings/clock/vf610-clock.h            |  5 +-
>  11 files changed, 149 insertions(+), 17 deletions(-)
> 
> -- 
> 2.0.4
> 

-- 
Best Regards,
Peter Chen

Re: [PATCH RESEND v2 7/7] ARM: dts: vf610-twr: Add USB support

[Shawn Guo]

On Tue, Aug 19, 2014 at 12:24:37AM +0400, Sergei Shtylyov wrote:
> Hello.
> 
> On 08/19/2014 12:07 AM, Stefan Agner wrote:
> 
> >Add USB support for Freescale Vybrid tower. The USB hosts over-current
> >protection signal is not connected is not connected to the PHY's over-
> 
>    Yes, we all understood that it's not connected, no need to repeat. ;-)

I will fix it up when applying.

Shawn

Re: [PATCH RESEND v2 0/7] vf610: Add USB support

[Shawn Guo]

On Mon, Aug 18, 2014 at 10:07:10PM +0200, Stefan Agner wrote:
> Stefan Agner (7):
>   ARM: dts: vf610: Add USB PHY and controller
>   ARM: imx: clk-vf610: Add USBPHY clocks
...
>   ARM: dts: vf610: Add usbmisc for non-core registers
...
>   ARM: dts: vf610-colibri: Add USB support
>   ARM: dts: vf610-twr: Add USB support

Applied these 5 patches, thanks.

Re: [PATCH RESEND v2 3/7] usb: phy: mxs: Add VF610 USB PHY support

[Stefan Agner]

I think I still miss a Signed-Off-By Felipe Balbi here...

All the rest should make it into 3.18, but USB without PHY is no fun to
use ;-)

Am 2014-08-19 01:37, schrieb Stefan Agner:
> This adds support for the USB PHY in Vybrid VF610. We assume that
> the disconnection without VBUS is also needed for Vybrid.
> 
> Tests showed, without MXS_PHY_NEED_IP_FIX, enumeration of devices
> behind a USB Hub fails with errors:
> 
> [  215.163507] usb usb1-port1: cannot reset (err = -32)
> [  215.170498] usb usb1-port1: cannot reset (err = -32)
> [  215.185120] usb usb1-port1: cannot reset (err = -32)
> [  215.191345] usb usb1-port1: cannot reset (err = -32)
> [  215.202487] usb usb1-port1: cannot reset (err = -32)
> [  215.207718] usb usb1-port1: Cannot enable. Maybe the USB cable is bad?
> [  215.219317] usb usb1-port1: unable to enumerate USB device
> 
> Hence we also enable the MXS_PHY_NEED_IP_FIX flag.
> 
> Acked-by: Peter Chen <peter.chen@freescale.com>
> Signed-off-by: Stefan Agner <stefan@agner.ch>
> ---
>  Documentation/devicetree/bindings/usb/mxs-phy.txt | 1 +
>  drivers/usb/phy/phy-mxs-usb.c                     | 6 ++++++
>  2 files changed, 7 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/usb/mxs-phy.txt
> b/Documentation/devicetree/bindings/usb/mxs-phy.txt
> index cef181a..fe3eed8 100644
> --- a/Documentation/devicetree/bindings/usb/mxs-phy.txt
> +++ b/Documentation/devicetree/bindings/usb/mxs-phy.txt
> @@ -5,6 +5,7 @@ Required properties:
>  	* "fsl,imx23-usbphy" for imx23 and imx28
>  	* "fsl,imx6q-usbphy" for imx6dq and imx6dl
>  	* "fsl,imx6sl-usbphy" for imx6sl
> +	* "fsl,vf610-usbphy" for Vybrid vf610
>    "fsl,imx23-usbphy" is still a fallback for other strings
>  - reg: Should contain registers location and length
>  - interrupts: Should contain phy interrupt
> diff --git a/drivers/usb/phy/phy-mxs-usb.c b/drivers/usb/phy/phy-mxs-usb.c
> index c42bdf0..8c2f23b 100644
> --- a/drivers/usb/phy/phy-mxs-usb.c
> +++ b/drivers/usb/phy/phy-mxs-usb.c
> @@ -125,10 +125,16 @@ static const struct mxs_phy_data imx6sl_phy_data = {
>  		MXS_PHY_NEED_IP_FIX,
>  };
>  
> +static const struct mxs_phy_data vf610_phy_data = {
> +	.flags = MXS_PHY_DISCONNECT_LINE_WITHOUT_VBUS |
> +		MXS_PHY_NEED_IP_FIX,
> +};
> +
>  static const struct of_device_id mxs_phy_dt_ids[] = {
>  	{ .compatible = "fsl,imx6sl-usbphy", .data = &imx6sl_phy_data, },
>  	{ .compatible = "fsl,imx6q-usbphy", .data = &imx6q_phy_data, },
>  	{ .compatible = "fsl,imx23-usbphy", .data = &imx23_phy_data, },
> +	{ .compatible = "fsl,vf610-usbphy", .data = &vf610_phy_data, },
>  	{ /* sentinel */ }
>  };
>  MODULE_DEVICE_TABLE(of, mxs_phy_dt_ids);

Re: [PATCH RESEND v2 3/7] usb: phy: mxs: Add VF610 USB PHY support

[Felipe Balbi]

[-- Attachment #1: Type: text/plain, Size: 402 bytes --]

Hi,

On Mon, Sep 01, 2014 at 06:36:50PM +0530, Stefan Agner wrote:
> I think I still miss a Signed-Off-By Felipe Balbi here...
> 
> All the rest should make it into 3.18, but USB without PHY is no fun to
> use ;-)

this is already in my testing/next

https://git.kernel.org/cgit/linux/kernel/git/balbi/usb.git/commit/?h=testing/next&id=d0ee68b59e6aa33221445dc555efac3736b89026

-- 
balbi

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