[PATCH v3 0/4] USB Host support for OMAP5 uEVM (for 3.14)

[PATCH v3 0/4] USB Host support for OMAP5 uEVM (for 3.14)

[Roger Quadros]

Hi Benoit & Tony,

This patchset brings up USB Host ports and Ethernet port on
the OMAP5 uEVM board.

It depends on the TI Clock DT conversion patches [1].

[1] - http://article.gmane.org/gmane.linux.ports.arm.kernel/289895

cheers,
-roger

Roger Quadros (4):
  ARM: dts: OMAP5: Add 60MHz clock reference to USB Host module
  ARM: dts: omap4-panda: Provide USB PHY clock
  ARM: dts: omap5-uevm: Provide USB PHY clock
  ARM: OMAP2+: Remove legacy_init_ehci_clk()

 arch/arm/boot/dts/omap4-panda-common.dtsi |  8 ++------
 arch/arm/boot/dts/omap5-uevm.dts          |  8 ++------
 arch/arm/boot/dts/omap5.dtsi              |  2 ++
 arch/arm/mach-omap2/pdata-quirks.c        | 16 ----------------
 4 files changed, 6 insertions(+), 28 deletions(-)

-- 
1.8.3.2

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[PATCH v3 1/4] ARM: dts: OMAP5: Add 60MHz clock reference to USB Host module

[Roger Quadros]

USB Host driver (drivers/mfd/omap-usb-host.c) expects the 60MHz
reference clock to be named "init_60m_fclk". Provide this
information.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/boot/dts/omap5.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
index 2f12a47..e0ab379 100644
--- a/arch/arm/boot/dts/omap5.dtsi
+++ b/arch/arm/boot/dts/omap5.dtsi
@@ -765,6 +765,8 @@
 			#address-cells = <1>;
 			#size-cells = <1>;
 			ranges;
+			clocks = <&l3init_60m_fclk>;
+			clock-names = "init_60m_fclk";
 
 			usbhsohci: ohci@4a064800 {
 				compatible = "ti,ohci-omap3", "usb-ohci";
-- 
1.8.3.2

Re: [PATCH v3 1/4] ARM: dts: OMAP5: Add 60MHz clock reference to USB Host module

[Arnd Bergmann]

On Tuesday 07 January 2014, Roger Quadros wrote:
> USB Host driver (drivers/mfd/omap-usb-host.c) expects the 60MHz
> reference clock to be named "init_60m_fclk". Provide this
> information.
> 
> Signed-off-by: Roger Quadros <rogerq@ti.com>
> ---
>  arch/arm/boot/dts/omap5.dtsi | 2 ++
>  1 file changed, 2 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
> index 2f12a47..e0ab379 100644
> --- a/arch/arm/boot/dts/omap5.dtsi
> +++ b/arch/arm/boot/dts/omap5.dtsi
> @@ -765,6 +765,8 @@
>                         #address-cells = <1>;
>                         #size-cells = <1>;
>                         ranges;
> +                       clocks = <&l3init_60m_fclk>;
> +                       clock-names = "init_60m_fclk";
>  
>                         usbhsohci: ohci@4a064800 {
>                                 compatible = "ti,ohci-omap3", "usb-ohci";

The bindings/mfd/omap-usb-host.txt file doesn't document any clocks.
Please create another patch to document the clock names in this binding
before you start putting them into the dtsi file. So far the clock
names are an implementation detail of Linux as they are not part
of the binding, and with your patch it becomes part of the ABI.

	Arnd

Re: [PATCH v3 1/4] ARM: dts: OMAP5: Add 60MHz clock reference to USB Host module

[Roger Quadros]

On 01/07/2014 08:43 PM, Arnd Bergmann wrote:
> On Tuesday 07 January 2014, Roger Quadros wrote:
>> USB Host driver (drivers/mfd/omap-usb-host.c) expects the 60MHz
>> reference clock to be named "init_60m_fclk". Provide this
>> information.
>>
>> Signed-off-by: Roger Quadros <rogerq-l0cyMroinI0@public.gmane.org>
>> ---
>>  arch/arm/boot/dts/omap5.dtsi | 2 ++
>>  1 file changed, 2 insertions(+)
>>
>> diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
>> index 2f12a47..e0ab379 100644
>> --- a/arch/arm/boot/dts/omap5.dtsi
>> +++ b/arch/arm/boot/dts/omap5.dtsi
>> @@ -765,6 +765,8 @@
>>                         #address-cells = <1>;
>>                         #size-cells = <1>;
>>                         ranges;
>> +                       clocks = <&l3init_60m_fclk>;
>> +                       clock-names = "init_60m_fclk";
>>  
>>                         usbhsohci: ohci@4a064800 {
>>                                 compatible = "ti,ohci-omap3", "usb-ohci";
> 
> The bindings/mfd/omap-usb-host.txt file doesn't document any clocks.
> Please create another patch to document the clock names in this binding
> before you start putting them into the dtsi file. So far the clock
> names are an implementation detail of Linux as they are not part
> of the binding, and with your patch it becomes part of the ABI.
> 
Right. I'll re-post the series.

cheers,
-roger
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[PATCH v3 2/4] ARM: dts: omap4-panda: Provide USB PHY clock

[Roger Quadros]

The USB PHY gets its clock from AUXCLK3. Provide this
information.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/boot/dts/omap4-panda-common.dtsi | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/omap4-panda-common.dtsi b/arch/arm/boot/dts/omap4-panda-common.dtsi
index 88c6a05..50b72966 100644
--- a/arch/arm/boot/dts/omap4-panda-common.dtsi
+++ b/arch/arm/boot/dts/omap4-panda-common.dtsi
@@ -83,12 +83,8 @@
 		compatible = "usb-nop-xceiv";
 		reset-gpios = <&gpio2 30 GPIO_ACTIVE_LOW>;   /* gpio_62 */
 		vcc-supply = <&hsusb1_power>;
-	/**
-	 * FIXME:
-	 * put the right clock phandle here when available
-	 *	clocks = <&auxclk3>;
-	 *	clock-names = "main_clk";
-	 */
+		clocks = <&auxclk3_ck>;
+		clock-names = "main_clk";
 		clock-frequency = <19200000>;
 	};
 
-- 
1.8.3.2

[PATCH v3 3/4] ARM: dts: omap5-uevm: Provide USB PHY clock

[Roger Quadros]

The HS USB 2 PHY gets its clock from AUXCLK1. Provide this
information.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/boot/dts/omap5-uevm.dts | 8 ++------
 1 file changed, 2 insertions(+), 6 deletions(-)

diff --git a/arch/arm/boot/dts/omap5-uevm.dts b/arch/arm/boot/dts/omap5-uevm.dts
index 002fa70..3b99ec2 100644
--- a/arch/arm/boot/dts/omap5-uevm.dts
+++ b/arch/arm/boot/dts/omap5-uevm.dts
@@ -31,12 +31,8 @@
 	hsusb2_phy: hsusb2_phy {
 		compatible = "usb-nop-xceiv";
 		reset-gpios = <&gpio3 16 GPIO_ACTIVE_LOW>; /* gpio3_80 HUB_NRESET */
-	/**
-	  * FIXME
-	  * Put the right clock phandle here when available
-	  *	clocks = <&auxclk1>;
-	  *	clock-names = "main_clk";
-	  */
+		clocks = <&auxclk1_ck>;
+		clock-names = "main_clk";
 		clock-frequency = <19200000>;
 	};
 
-- 
1.8.3.2

[PATCH v3 4/4] ARM: OMAP2+: Remove legacy_init_ehci_clk()

[Roger Quadros]

The necessary clock phandle for the EHCI clock is now provided
via device tree so we no longer need this legacy method.

Signed-off-by: Roger Quadros <rogerq@ti.com>
---
 arch/arm/mach-omap2/pdata-quirks.c | 16 ----------------
 1 file changed, 16 deletions(-)

diff --git a/arch/arm/mach-omap2/pdata-quirks.c b/arch/arm/mach-omap2/pdata-quirks.c
index 39f020c..6a4e2d1 100644
--- a/arch/arm/mach-omap2/pdata-quirks.c
+++ b/arch/arm/mach-omap2/pdata-quirks.c
@@ -26,20 +26,6 @@ struct pdata_init {
 	void (*fn)(void);
 };
 
-/*
- * Create alias for USB host PHY clock.
- * Remove this when clock phandle can be provided via DT
- */
-static void __init __used legacy_init_ehci_clk(char *clkname)
-{
-	int ret;
-
-	ret = clk_add_alias("main_clk", NULL, clkname, NULL);
-	if (ret)
-		pr_err("%s:Failed to add main_clk alias to %s :%d\n",
-		       __func__, clkname, ret);
-}
-
 #if IS_ENABLED(CONFIG_WL12XX)
 
 static struct wl12xx_platform_data wl12xx __initdata;
@@ -105,7 +91,6 @@ static void __init omap4_sdp_legacy_init(void)
 static void __init omap4_panda_legacy_init(void)
 {
 	omap4_panda_display_init_of();
-	legacy_init_ehci_clk("auxclk3_ck");
 	legacy_init_wl12xx(WL12XX_REFCLOCK_38, 0, 53);
 }
 #endif
@@ -113,7 +98,6 @@ static void __init omap4_panda_legacy_init(void)
 #ifdef CONFIG_SOC_OMAP5
 static void __init omap5_uevm_legacy_init(void)
 {
-	legacy_init_ehci_clk("auxclk1_ck");
 }
 #endif
 
-- 
1.8.3.2