| Message ID | 1448008509-8913-5-git-send-email-agross@codeaurora.org (mailing list archive) |
|---|---|
| State | Not Applicable, archived |
| Delegated to: | Andy Gross |
| Headers | show |
On Fri, Nov 20, 2015 at 02:35:09AM -0600, Andy Gross wrote: > This patch adds documentation for the optional syscon-tcsr property in the > Qualcomm DWC3 node. The syscon-tcsr specifies the register and bit used to > configure the TCSR USB phy mux register. > > Signed-off-by: Andy Gross <agross@codeaurora.org> Acked-by: Rob Herring <robh@kernel.org> > --- > Documentation/devicetree/bindings/usb/qcom,dwc3.txt | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > index ca164e7..dfa222d 100644 > --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > @@ -8,6 +8,10 @@ Required properties: > "core" Master/Core clock, have to be >= 125 MHz for SS > operation and >= 60MHz for HS operation > > +Optional properties: > +- syscon-tcsr Specifies TCSR handle, register offset, and bit position for > + configuring the phy mux setting. > + > Optional clocks: > "iface" System bus AXI clock. Not present on all platforms > "sleep" Sleep clock, used when USB3 core goes into low > @@ -22,6 +26,11 @@ Documentation/devicetree/bindings/phy/qcom,dwc3-usb-phy.txt > > Example device nodes: > > + tcsr: syscon@1a400000 { > + compatible = "qcom,tcsr-ipq8064", "syscon"; > + reg = <0x1a400000 0x100>; > + }; > + > hs_phy: phy@100f8800 { > compatible = "qcom,dwc3-hs-usb-phy"; > reg = <0x100f8800 0x30>; > @@ -51,6 +60,8 @@ Example device nodes: > > ranges; > > + syscon-tcsr = <&tcsr 0xb0 0x1>; > + > status = "ok"; > > dwc3@10000000 { > -- > The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, > hosted by The Linux Foundation > > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html -- To unsubscribe from this list: send the line "unsubscribe linux-arm-msm" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi, Andy Gross <agross@codeaurora.org> writes: > This patch adds documentation for the optional syscon-tcsr property in the > Qualcomm DWC3 node. The syscon-tcsr specifies the register and bit used to > configure the TCSR USB phy mux register. > > Signed-off-by: Andy Gross <agross@codeaurora.org> > --- > Documentation/devicetree/bindings/usb/qcom,dwc3.txt | 11 +++++++++++ > 1 file changed, 11 insertions(+) > > diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > index ca164e7..dfa222d 100644 > --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > @@ -8,6 +8,10 @@ Required properties: > "core" Master/Core clock, have to be >= 125 MHz for SS > operation and >= 60MHz for HS operation > > +Optional properties: > +- syscon-tcsr Specifies TCSR handle, register offset, and bit position for > + configuring the phy mux setting. oh, it's a PHY mux ? I don't think it should be part of any dwc3-* glue layer then. By the time we reach dwc3, the mux should be properly configured. Kishon, any ideas ?
On Fri, Nov 20, 2015 at 09:08:46AM -0600, Felipe Balbi wrote: > > Hi, > > Andy Gross <agross@codeaurora.org> writes: > > This patch adds documentation for the optional syscon-tcsr property in the > > Qualcomm DWC3 node. The syscon-tcsr specifies the register and bit used to > > configure the TCSR USB phy mux register. > > > > Signed-off-by: Andy Gross <agross@codeaurora.org> > > --- > > Documentation/devicetree/bindings/usb/qcom,dwc3.txt | 11 +++++++++++ > > 1 file changed, 11 insertions(+) > > > > diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > > index ca164e7..dfa222d 100644 > > --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > > +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt > > @@ -8,6 +8,10 @@ Required properties: > > "core" Master/Core clock, have to be >= 125 MHz for SS > > operation and >= 60MHz for HS operation > > > > +Optional properties: > > +- syscon-tcsr Specifies TCSR handle, register offset, and bit position for > > + configuring the phy mux setting. > > oh, it's a PHY mux ? I don't think it should be part of any dwc3-* glue > layer then. By the time we reach dwc3, the mux should be properly > configured. > > Kishon, any ideas ? > > -- > balbi The only issue with putting it at the phy layer is that i'd have redundant syscon entries for each pair of phys, unless i group them somehow in dt. The only other issue I can think of is that in the downstream kernels, they do this before messing with the configuration of the dwc3. So long as the phys do their thing before the dwc3 (phys latched before config), we're ok.
diff --git a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt index ca164e7..dfa222d 100644 --- a/Documentation/devicetree/bindings/usb/qcom,dwc3.txt +++ b/Documentation/devicetree/bindings/usb/qcom,dwc3.txt @@ -8,6 +8,10 @@ Required properties: "core" Master/Core clock, have to be >= 125 MHz for SS operation and >= 60MHz for HS operation +Optional properties: +- syscon-tcsr Specifies TCSR handle, register offset, and bit position for + configuring the phy mux setting. + Optional clocks: "iface" System bus AXI clock. Not present on all platforms "sleep" Sleep clock, used when USB3 core goes into low @@ -22,6 +26,11 @@ Documentation/devicetree/bindings/phy/qcom,dwc3-usb-phy.txt Example device nodes: + tcsr: syscon@1a400000 { + compatible = "qcom,tcsr-ipq8064", "syscon"; + reg = <0x1a400000 0x100>; + }; + hs_phy: phy@100f8800 { compatible = "qcom,dwc3-hs-usb-phy"; reg = <0x100f8800 0x30>; @@ -51,6 +60,8 @@ Example device nodes: ranges; + syscon-tcsr = <&tcsr 0xb0 0x1>; + status = "ok"; dwc3@10000000 {
This patch adds documentation for the optional syscon-tcsr property in the Qualcomm DWC3 node. The syscon-tcsr specifies the register and bit used to configure the TCSR USB phy mux register. Signed-off-by: Andy Gross <agross@codeaurora.org> --- Documentation/devicetree/bindings/usb/qcom,dwc3.txt | 11 +++++++++++ 1 file changed, 11 insertions(+)