From: Rob Herring <robh@kernel.org> To: Stephen Boyd <stephen.boyd@linaro.org> Cc: linux-usb@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-arm-msm@vger.kernel.org, Andy Gross <andy.gross@linaro.org>, Bjorn Andersson <bjorn.andersson@linaro.org>, Neil Armstrong <narmstrong@baylibre.com>, Arnd Bergmann <arnd@arndb.de>, Felipe Balbi <balbi@kernel.org>, Greg Kroah-Hartman <gregkh@linuxfoundation.org>, Heikki Krogerus <heikki.krogerus@linux.intel.com>, devicetree@vger.kernel.org Subject: Re: [PATCH 02/21] usb: ulpi: Support device discovery via DT Date: Tue, 28 Jun 2016 15:56:42 -0500 [thread overview] Message-ID: <20160628205642.GP3737@rob-hp-laptop> (raw) In-Reply-To: <20160626072838.28082-3-stephen.boyd@linaro.org> On Sun, Jun 26, 2016 at 12:28:19AM -0700, Stephen Boyd wrote: > The qcom HSIC ulpi phy doesn't have any bits set in the vendor or > product id ulpi registers. This makes it impossible to make a > ulpi driver match against the id registers. Add support to > discover the ulpi phys via DT to help alleviate this problem. > We'll look for a ulpi bus node underneath the device registering > the ulpi viewport (or the parent of that device to support > chipidea's device layout) and then match up the phy node > underneath that with the ulpi device that's created. > > The side benefit of this is that we can use standard DT > properties in the phy node like clks, regulators, gpios, etc. > because we don't have firmware like ACPI to turn these things on > for us. And we can use the DT phy binding to point our phy > consumer to the phy provider. > > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> > Cc: <devicetree@vger.kernel.org> > Cc: Rob Herring <robh+dt@kernel.org> > Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> > --- > Documentation/devicetree/bindings/usb/ulpi.txt | 20 +++++++++ > drivers/usb/common/ulpi.c | 56 +++++++++++++++++++++++++- > 2 files changed, 74 insertions(+), 2 deletions(-) > create mode 100644 Documentation/devicetree/bindings/usb/ulpi.txt > > diff --git a/Documentation/devicetree/bindings/usb/ulpi.txt b/Documentation/devicetree/bindings/usb/ulpi.txt > new file mode 100644 > index 000000000000..ca179dc4bd50 > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/ulpi.txt > @@ -0,0 +1,20 @@ > +ULPI bus binding > +---------------- > + > +Phys that are behind a ULPI connection can be described with the following > +binding. The host controller shall have a "ulpi" named node as a child, and > +that node shall have one enabled node underneath it representing the ulpi > +device on the bus. This needs to co-exist with the USB bus binding which has the controller ports for the child nodes. Maybe use the phy binding? > + > +EXAMPLE > +------- > + > +usb { > + compatible = "vendor,usb-controller"; > + > + ulpi { > + phy { > + compatible = "vendor,phy"; > + }; > + }; > +};
WARNING: multiple messages have this Message-ID (diff)
From: robh@kernel.org (Rob Herring) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 02/21] usb: ulpi: Support device discovery via DT Date: Tue, 28 Jun 2016 15:56:42 -0500 [thread overview] Message-ID: <20160628205642.GP3737@rob-hp-laptop> (raw) In-Reply-To: <20160626072838.28082-3-stephen.boyd@linaro.org> On Sun, Jun 26, 2016 at 12:28:19AM -0700, Stephen Boyd wrote: > The qcom HSIC ulpi phy doesn't have any bits set in the vendor or > product id ulpi registers. This makes it impossible to make a > ulpi driver match against the id registers. Add support to > discover the ulpi phys via DT to help alleviate this problem. > We'll look for a ulpi bus node underneath the device registering > the ulpi viewport (or the parent of that device to support > chipidea's device layout) and then match up the phy node > underneath that with the ulpi device that's created. > > The side benefit of this is that we can use standard DT > properties in the phy node like clks, regulators, gpios, etc. > because we don't have firmware like ACPI to turn these things on > for us. And we can use the DT phy binding to point our phy > consumer to the phy provider. > > Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> > Cc: Heikki Krogerus <heikki.krogerus@linux.intel.com> > Cc: <devicetree@vger.kernel.org> > Cc: Rob Herring <robh+dt@kernel.org> > Signed-off-by: Stephen Boyd <stephen.boyd@linaro.org> > --- > Documentation/devicetree/bindings/usb/ulpi.txt | 20 +++++++++ > drivers/usb/common/ulpi.c | 56 +++++++++++++++++++++++++- > 2 files changed, 74 insertions(+), 2 deletions(-) > create mode 100644 Documentation/devicetree/bindings/usb/ulpi.txt > > diff --git a/Documentation/devicetree/bindings/usb/ulpi.txt b/Documentation/devicetree/bindings/usb/ulpi.txt > new file mode 100644 > index 000000000000..ca179dc4bd50 > --- /dev/null > +++ b/Documentation/devicetree/bindings/usb/ulpi.txt > @@ -0,0 +1,20 @@ > +ULPI bus binding > +---------------- > + > +Phys that are behind a ULPI connection can be described with the following > +binding. The host controller shall have a "ulpi" named node as a child, and > +that node shall have one enabled node underneath it representing the ulpi > +device on the bus. This needs to co-exist with the USB bus binding which has the controller ports for the child nodes. Maybe use the phy binding? > + > +EXAMPLE > +------- > + > +usb { > + compatible = "vendor,usb-controller"; > + > + ulpi { > + phy { > + compatible = "vendor,phy"; > + }; > + }; > +};
next prev parent reply other threads:[~2016-06-28 20:56 UTC|newest] Thread overview: 214+ messages / expand[flat|nested] mbox.gz Atom feed top 2016-06-26 7:28 [PATCH 00/21] Support qcom's HSIC USB and rewrite USB2 HS phy support Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 01/21] of: device: Support loading a module with OF based modalias Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-28 4:17 ` Bjorn Andersson 2016-06-28 4:17 ` Bjorn Andersson 2016-06-28 4:39 ` Rob Herring [not found] ` <20160626072838.28082-1-stephen.boyd-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2016-06-26 7:28 ` [PATCH 02/21] usb: ulpi: Support device discovery via DT Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd [not found] ` <20160626072838.28082-3-stephen.boyd-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2016-06-27 4:21 ` kbuild test robot 2016-06-27 4:21 ` kbuild test robot 2016-06-27 4:21 ` kbuild test robot 2016-06-27 14:34 ` Heikki Krogerus 2016-06-27 14:34 ` Heikki Krogerus 2016-06-27 22:10 ` Stephen Boyd 2016-06-27 22:10 ` Stephen Boyd 2016-06-28 11:42 ` Heikki Krogerus 2016-06-28 11:42 ` Heikki Krogerus 2016-06-28 18:27 ` Stephen Boyd 2016-06-28 18:27 ` Stephen Boyd 2016-06-29 1:53 ` Peter Chen 2016-06-29 1:53 ` Peter Chen 2016-06-28 20:56 ` Rob Herring [this message] 2016-06-28 20:56 ` Rob Herring 2016-06-28 22:09 ` Stephen Boyd 2016-06-28 22:09 ` Stephen Boyd 2016-07-01 0:59 ` Rob Herring 2016-07-01 0:59 ` Rob Herring 2016-07-01 0:59 ` Rob Herring 2016-07-06 6:16 ` Stephen Boyd 2016-07-06 6:16 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 03/21] usb: ulpi: Avoid reading/writing in device creation with OF devices Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 14/21] usb: chipidea: msm: Add proper clk and reset support Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 7:02 ` Peter Chen 2016-06-29 7:02 ` Peter Chen 2016-06-26 7:28 ` [PATCH 20/21] phy: Add support for Qualcomm's USB HSIC phy Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-28 8:49 ` Neil Armstrong 2016-06-28 8:49 ` Neil Armstrong 2016-06-28 21:58 ` Stephen Boyd 2016-06-28 21:58 ` Stephen Boyd 2016-06-28 21:58 ` Stephen Boyd 2016-06-29 9:16 ` Neil Armstrong 2016-06-29 9:16 ` Neil Armstrong 2016-06-29 9:16 ` Neil Armstrong [not found] ` <57739203.9000601-rdvid1DuHRBWk0Htik3J/w@public.gmane.org> 2016-06-29 18:54 ` Stephen Boyd 2016-06-29 18:54 ` Stephen Boyd 2016-06-29 18:54 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 21/21] phy: Add support for Qualcomm's USB HS phy Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-28 3:09 ` [PATCH 00/21] Support qcom's HSIC USB and rewrite USB2 HS phy support John Stultz 2016-06-28 3:09 ` John Stultz 2016-06-28 3:09 ` John Stultz 2016-06-28 8:34 ` Stephen Boyd 2016-06-28 8:34 ` Stephen Boyd 2016-07-02 6:03 ` John Stultz 2016-07-02 6:03 ` John Stultz 2016-07-02 6:03 ` John Stultz 2016-07-05 19:22 ` Stephen Boyd 2016-07-05 19:22 ` Stephen Boyd 2016-07-05 19:33 ` John Stultz 2016-07-05 19:33 ` John Stultz 2016-07-05 19:33 ` John Stultz 2016-06-26 7:28 ` [PATCH 04/21] usb: chipidea: Only read/write OTGSC from one place Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-27 8:04 ` Jun Li 2016-06-27 8:04 ` Jun Li 2016-06-27 8:04 ` Jun Li [not found] ` <AM4PR04MB213088094DF074BB5CB3DD0689210-WOempg8NbQQzjTQnahXoOs9NdZoXdze2vxpqHgZTriW3zl9H0oFU5g@public.gmane.org> 2016-06-27 19:07 ` Stephen Boyd 2016-06-27 19:07 ` Stephen Boyd 2016-06-27 19:07 ` Stephen Boyd 2016-06-28 9:36 ` Peter Chen 2016-06-28 9:36 ` Peter Chen 2016-06-28 9:36 ` Peter Chen 2016-06-28 22:10 ` Stephen Boyd 2016-06-28 22:10 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 05/21] usb: chipidea: Handle extcon events properly Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-28 10:01 ` Peter Chen 2016-06-28 10:01 ` Peter Chen 2016-06-26 7:28 ` [PATCH 06/21] usb: chipidea: Initialize and reinitialize phy later Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 2:30 ` Peter Chen 2016-06-29 2:30 ` Peter Chen 2016-06-30 1:23 ` Stephen Boyd 2016-06-30 1:23 ` Stephen Boyd 2016-06-30 1:22 ` Peter Chen 2016-06-30 1:22 ` Peter Chen 2016-06-26 7:28 ` [PATCH 07/21] usb: chipidea: Notify of reset when switching into host mode Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 08/21] usb: chipidea: Kick OTG state machine for AVVIS with vbus extcon Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd [not found] ` <20160626072838.28082-9-stephen.boyd-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2016-06-29 3:09 ` Peter Chen 2016-06-29 3:09 ` Peter Chen 2016-06-29 3:09 ` Peter Chen 2016-06-30 1:19 ` Stephen Boyd 2016-06-30 1:19 ` Stephen Boyd 2016-06-30 1:26 ` Peter Chen 2016-06-30 1:26 ` Peter Chen 2016-06-30 1:26 ` Peter Chen 2016-06-30 1:50 ` Jun Li 2016-06-30 1:50 ` Jun Li 2016-06-30 1:50 ` Jun Li 2016-06-26 7:28 ` [PATCH 09/21] usb: chipidea: Add support for ULPI PHY bus Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 6:26 ` Peter Chen 2016-06-29 6:26 ` Peter Chen 2016-06-30 1:29 ` Stephen Boyd 2016-06-30 1:29 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 10/21] usb: chipidea: msm: Rely on core to override AHBBURST Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 6:32 ` Peter Chen 2016-06-29 6:32 ` Peter Chen 2016-06-29 18:59 ` Stephen Boyd 2016-06-29 18:59 ` Stephen Boyd 2016-06-30 1:18 ` Peter Chen 2016-06-30 1:18 ` Peter Chen 2016-06-30 1:18 ` Peter Chen 2016-06-30 1:41 ` Stephen Boyd 2016-06-30 1:41 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 11/21] usb: chipidea: msm: Use hw_write_id_reg() instead of writel directly Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 6:37 ` Peter Chen 2016-06-29 6:37 ` Peter Chen 2016-06-26 7:28 ` [PATCH 12/21] usb: chipidea: msm: Keep device runtime enabled Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 6:46 ` Peter Chen 2016-06-29 6:46 ` Peter Chen 2016-06-30 0:43 ` Stephen Boyd 2016-06-30 0:43 ` Stephen Boyd 2016-06-30 1:39 ` Peter Chen 2016-06-30 1:39 ` Peter Chen 2016-06-30 20:30 ` Stephen Boyd 2016-06-30 20:30 ` Stephen Boyd 2016-07-01 3:20 ` Peter Chen 2016-07-01 3:20 ` Peter Chen 2016-06-26 7:28 ` [PATCH 13/21] usb: chipidea: msm: Allow core to get usb phy Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 6:48 ` Peter Chen 2016-06-29 6:48 ` Peter Chen 2016-06-29 11:34 ` Peter Chen 2016-06-29 11:34 ` Peter Chen 2016-06-29 19:31 ` Stephen Boyd 2016-06-29 19:31 ` Stephen Boyd 2016-06-30 1:43 ` Peter Chen 2016-06-30 1:43 ` Peter Chen 2016-06-30 1:43 ` Peter Chen 2016-06-26 7:28 ` [PATCH 15/21] usb: chipidea: msm: Mux over secondary phy at the right time Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd [not found] ` <20160626072838.28082-16-stephen.boyd-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org> 2016-06-28 4:51 ` Bjorn Andersson 2016-06-28 4:51 ` Bjorn Andersson 2016-06-28 4:51 ` Bjorn Andersson 2016-06-28 8:39 ` Stephen Boyd 2016-06-28 8:39 ` Stephen Boyd 2016-06-29 8:08 ` Peter Chen 2016-06-29 8:08 ` Peter Chen 2016-06-29 19:28 ` Stephen Boyd 2016-06-29 19:28 ` Stephen Boyd 2016-06-30 1:52 ` Peter Chen 2016-06-30 1:52 ` Peter Chen 2016-06-30 1:35 ` Stephen Boyd 2016-06-30 1:35 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 16/21] usb: chipidea: msm: Restore wrapper settings after reset Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 8:26 ` Peter Chen 2016-06-29 8:26 ` Peter Chen 2016-06-29 19:13 ` Stephen Boyd 2016-06-29 19:13 ` Stephen Boyd 2016-06-30 8:54 ` Peter Chen 2016-06-30 8:54 ` Peter Chen 2016-06-30 16:24 ` Stephen Boyd 2016-06-30 16:24 ` Stephen Boyd 2016-06-30 16:24 ` Stephen Boyd 2016-06-26 7:28 ` [PATCH 17/21] usb: chipidea: msm: Make platform data driver local instead of global Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-29 11:29 ` Peter Chen 2016-06-29 11:29 ` Peter Chen 2016-06-29 19:17 ` Stephen Boyd 2016-06-29 19:17 ` Stephen Boyd 2016-06-30 9:08 ` Peter Chen 2016-06-30 9:08 ` Peter Chen 2016-06-26 7:28 ` [PATCH 18/21] usb: chipidea: msm: Add reset controller for PHY POR bit Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-27 3:41 ` kbuild test robot 2016-06-27 3:41 ` kbuild test robot 2016-06-27 4:51 ` kbuild test robot 2016-06-27 4:51 ` kbuild test robot 2016-06-27 7:50 ` kbuild test robot 2016-06-27 7:50 ` kbuild test robot 2016-06-28 1:27 ` Stephen Boyd 2016-06-28 1:27 ` Stephen Boyd 2016-06-29 11:45 ` Peter Chen 2016-06-29 11:45 ` Peter Chen 2016-06-26 7:28 ` [PATCH 19/21] usb: chipidea: msm: Be silent on probe defer errors Stephen Boyd 2016-06-26 7:28 ` Stephen Boyd 2016-06-30 1:06 ` Peter Chen 2016-06-30 1:06 ` Peter Chen 2016-06-30 1:06 ` Peter Chen 2016-06-30 1:26 ` Stephen Boyd 2016-06-30 1:26 ` Stephen Boyd
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