On Fri, Jan 31, 2014 at 12:15:26PM -0600, Felipe Balbi wrote:
> Hi,
>
> On Fri, Jan 31, 2014 at 07:12:36PM +0100, Andre Heider wrote:
> > Hi,
> >
> > On Mon, Jan 13, 2014 at 01:50:09PM -0800, Paul Zimmerman wrote:
> > > The DWC2 driver should now be in good enough shape to move out of
> > > staging. I have stress tested it overnight on RPI running mass
> > > storage and Ethernet transfers in parallel, and for several days
> > > on our proprietary PCI-based platform.
> > >
> > > Signed-off-by: Paul Zimmerman <pa...@synopsys.com>
> > > ---
> > > v4: Also change directory path in MAINTAINERS
> > >
> > > Greg,
> > > I believe I have addressed all of the feedback since I last
> > > submitted this. Is there still time to do this before you
> > > close your trees?
> > >
> > > MAINTAINERS | 2 +-
> > > drivers/staging/Kconfig | 2 --
> > > drivers/staging/Makefile | 1 -
> > > drivers/staging/dwc2/TODO | 33
> > > -------------------------------
> > > drivers/usb/Kconfig | 2 ++
> > > drivers/usb/Makefile | 1 +
> > > drivers/{staging => usb}/dwc2/Kconfig | 0
> > > drivers/{staging => usb}/dwc2/Makefile | 0
> > > drivers/{staging => usb}/dwc2/core.c | 0
> > > drivers/{staging => usb}/dwc2/core.h | 0
> > > drivers/{staging => usb}/dwc2/core_intr.c | 0
> > > drivers/{staging => usb}/dwc2/hcd.c | 0
> > > drivers/{staging => usb}/dwc2/hcd.h | 0
> > > drivers/{staging => usb}/dwc2/hcd_ddma.c | 0
> > > drivers/{staging => usb}/dwc2/hcd_intr.c | 0
> > > drivers/{staging => usb}/dwc2/hcd_queue.c | 0
> > > drivers/{staging => usb}/dwc2/hw.h | 0
> > > drivers/{staging => usb}/dwc2/pci.c | 0
> > > drivers/{staging => usb}/dwc2/platform.c | 0
> > > 19 files changed, 4 insertions(+), 37 deletions(-)
> > > delete mode 100644 drivers/staging/dwc2/TODO
> > > rename drivers/{staging => usb}/dwc2/Kconfig (100%)
> > > rename drivers/{staging => usb}/dwc2/Makefile (100%)
> > > rename drivers/{staging => usb}/dwc2/core.c (100%)
> > > rename drivers/{staging => usb}/dwc2/core.h (100%)
> > > rename drivers/{staging => usb}/dwc2/core_intr.c (100%)
> > > rename drivers/{staging => usb}/dwc2/hcd.c (100%)
> > > rename drivers/{staging => usb}/dwc2/hcd.h (100%)
> > > rename drivers/{staging => usb}/dwc2/hcd_ddma.c (100%)
> > > rename drivers/{staging => usb}/dwc2/hcd_intr.c (100%)
> > > rename drivers/{staging => usb}/dwc2/hcd_queue.c (100%)
> > > rename drivers/{staging => usb}/dwc2/hw.h (100%)
> > > rename drivers/{staging => usb}/dwc2/pci.c (100%)
> > > rename drivers/{staging => usb}/dwc2/platform.c (100%)
> >
> > this looks just fine, but for whatever reason it breaks sdhci on my rpi.
> > With today's Linus' master the dwc2 controller seems to initialize fine,
> > but I get this upon boot:
> >
> > [ 1.783316] sdhci-bcm2835 20300000.sdhci: sdhci_pltfm_init failed -12
> > [ 1.794820] sdhci-bcm2835: probe of 20300000.sdhci failed with error -12
> >
> > That is:
> >
> > struct sdhci_host *sdhci_pltfm_init(struct platform_device
> > *pdev,
> > const struct
> > sdhci_pltfm_data *pdata,
> > size_t priv_size)
> > {
> > ...
> >
> > iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
> > if (!iomem) {
> > ret = -ENOMEM;
> > goto err;
> > }
> >
> > ...
> >
> > So far it's 100% reproducible. No further infos since my root device
> > went away. Same behavior with bcm2835_defconfig.
> >
> > Bisecting points to this commit, and if I move this driver back to
> > staging (revert 197ba5f406cc) usb and sdhci are both working properly.
> >
> > Without the revert, this patch on top...
> >
> > diff --git a/drivers/usb/dwc2/platform.c b/drivers/usb/dwc2/platform.c
> > index d01d0d3..eaba547 100644
> > --- a/drivers/usb/dwc2/platform.c
> > +++ b/drivers/usb/dwc2/platform.c
> > @@ -124,6 +124,9 @@ static int dwc2_driver_probe(struct platform_device
> > *dev)
> > int retval;
> > int irq;
> >
> > + if (usb_disabled())
> > + return -ENODEV;
> > +
> > match = of_match_device(dwc2_of_match_table, &dev->dev);
> > if (match && match->data) {
> > params = match->data;
> >
> > ...and "nousb" in the cmdline (with crashes without the patch), sdhci works
> > again. I don't see any obvious clues, any idea what's going on?
>
> wait, what ? How can a driver rename cause sdhci to die ? Your error is
> because you don't have that resource as part of your platform_device.
>
> -ECONFUSED. Have you really bisected it down to Paul's patch ?
This silly move doesn't trigger the sdhci ENOMEM:
diff --git a/arch/arm/boot/dts/bcm2835.dtsi b/arch/arm/boot/dts/bcm2835.dtsi
index b021c96..f739b80 100644
--- a/arch/arm/boot/dts/bcm2835.dtsi
+++ b/arch/arm/boot/dts/bcm2835.dtsi
@@ -100,6 +100,12 @@
status = "disabled";
};
+ usb {
+ compatible = "brcm,bcm2835-usb";
+ reg = <0x7e980000 0x10000>;
+ interrupts = <1 9>;
+ };
+
sdhci: sdhci {
compatible = "brcm,bcm2835-sdhci";
reg = <0x7e300000 0x100>;
@@ -107,12 +113,6 @@
clocks = <&clk_mmc>;
status = "disabled";
};
-
- usb {
- compatible = "brcm,bcm2835-usb";
- reg = <0x7e980000 0x10000>;
- interrupts = <1 9>;
- };
};
clocks {
Maybe there's some kind of race, or something even messing at the .dtb
at runtime?
Regards,
Andre
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