linux-kernel - Re: [PATCH v2 8/8] ARM: dts: omap5: add dwc3 core dt data

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Message-ID: <20130306091942.GJ28587@arwen.pp.htv.fi>
Date:	Wed, 6 Mar 2013 11:19:43 +0200
From:	Felipe Balbi <balbi@...com>
To:	kishon <kishon@...com>
CC:	<balbi@...com>, <grant.likely@...retlab.ca>,
	<rob.herring@...xeda.com>, <rob@...dley.net>, <b-cousson@...com>,
	<tony@...mide.com>, <linux@....linux.org.uk>,
	<devicetree-discuss@...ts.ozlabs.org>, <linux-doc@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <linux-usb@...r.kernel.org>,
	<linux-omap@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v2 8/8] ARM: dts: omap5: add dwc3 core dt data

Hi,

On Wed, Mar 06, 2013 at 02:25:48PM +0530, kishon wrote:
> Hi,
> 
> On Tuesday 05 March 2013 08:09 PM, Felipe Balbi wrote:
> >Hi,
> >
> >On Tue, Mar 05, 2013 at 08:07:03PM +0530, Kishon Vijay Abraham I wrote:
> >>Add dwc3 core dt data as a subnode to dwc3 omap glue data in omap5 dt
> >>data file. The information for the entered data node is available @
> >>Documentation/devicetree/bindings/usb/dwc3.txt
> >>
> >>Signed-off-by: Kishon Vijay Abraham I <kishon@...com>
> >>---
> >>  arch/arm/boot/dts/omap5.dtsi |    7 +++++++
> >>  1 file changed, 7 insertions(+)
> >>
> >>diff --git a/arch/arm/boot/dts/omap5.dtsi b/arch/arm/boot/dts/omap5.dtsi
> >>index c4eb2ec..24dd69f 100644
> >>--- a/arch/arm/boot/dts/omap5.dtsi
> >>+++ b/arch/arm/boot/dts/omap5.dtsi
> >>@@ -514,6 +514,13 @@
> >>  			#size-cells = <1>;
> >>  			utmi-mode = <2>;
> >>  			ranges;
> >>+			dwc3@...30000 {
> >>+				compatible = "synopsys,dwc3";
> >>+				reg = <0x4a030000 0x1000>;
> >>+				interrupts = <0 92 4>;
> >>+				usb-phy = <&usb2_phy>, <&usb3_phy>;
> >>+				tx-fifo-resize;
> >
> >I think this should be merged with previous patch. Also, we need to
> >check whether tx-fifo-resize is needed with ES2 or not ;-)
> 
> yeah. ES2 works without tx-fifo-resize.

Great, I guess we can deprecate that attribute. Can you check if ES2
still works with:

diff --git a/drivers/usb/dwc3/gadget.c b/drivers/usb/dwc3/gadget.c
index 82e160e..cad0131 100644
--- a/drivers/usb/dwc3/gadget.c
+++ b/drivers/usb/dwc3/gadget.c
@@ -2029,6 +2029,8 @@ static void dwc3_gadget_usb3_phy_suspend(struct dwc3 *dwc, int suspend)
 {
 	u32			reg;
 
+	return;
+
 	reg = dwc3_readl(dwc->regs, DWC3_GUSB3PIPECTL(0));
 
 	if (suspend)
@@ -2043,6 +2045,8 @@ static void dwc3_gadget_usb2_phy_suspend(struct dwc3 *dwc, int suspend)
 {
 	u32			reg;
 
+	return;
+
 	reg = dwc3_readl(dwc->regs, DWC3_GUSB2PHYCFG(0));
 
 	if (suspend)


starting on 1.94a (IIRC) core was supposed to control PHYs directly and
since there's nobody in linux mainline using any version prior to 1.94a,
we could drop that too.

-- 
balbi

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