| Message ID | 20191002080051.11142-7-jckuo@nvidia.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
| Series | Add Tegra194 XUSB host and pad controller support | expand |
On Wed, Oct 02, 2019 at 04:00:51PM +0800, JC Kuo wrote: > This commit enables XUSB host and pad controller in Tegra194 > P2972-0000 board. > > Signed-off-by: JC Kuo <jckuo@nvidia.com> > --- > .../arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 31 +++++++++- > .../boot/dts/nvidia/tegra194-p2972-0000.dts | 59 +++++++++++++++++++ > 2 files changed, 89 insertions(+), 1 deletion(-) > > diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi > index 4c38426a6969..cb236edc6a0d 100644 > --- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi > +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi > @@ -229,7 +229,7 @@ > regulator-max-microvolt = <3300000>; > }; > > - ldo5 { > + vdd_usb_3v3: ldo5 { > regulator-name = "VDD_USB_3V3"; > regulator-min-microvolt = <3300000>; > regulator-max-microvolt = <3300000>; > @@ -313,5 +313,34 @@ > regulator-boot-on; > enable-active-low; > }; > + > + vdd_5v_sata: regulator@4 { > + compatible = "regulator-fixed"; > + reg = <4>; > + > + regulator-name = "vdd-5v-sata"; Please keep capitalization of regulator names consistent. We use all-caps and underscores for the others (which mirrors the names in the schematics), so please stick with that for this one as well. Also, I'm wondering if perhaps you can clarify something here. My understanding is that SATA functionality is provided via a controller on the PCI bus. Why is it that we route the 5 V SATA power to the USB port? Oh wait... this is one of those eSATAp (hybrid) ports that can take either eSATA or USB, right? Do we need any additional setup to switch between eSATA and USB modes? Or is this all done in hardware? That is, if I plug in an eSATA, does it automatically hotplug detect the device as SATA and if I plug in a USB device, does it automatically detect it as USB? > + regulator-min-microvolt = <5000000>; > + regulator-max-microvolt = <5000000>; > + gpio = <&gpio TEGRA194_MAIN_GPIO(Z, 1) GPIO_ACTIVE_LOW>; This will actually cause a warning on boot. For fixed regulators the polarity of the enable GPIO is not specified in the GPIO specifier. Instead you're supposed to use the boolean enable-active-high property to specify if the enable GPIO is active-high. By default the enable GPIO is considered to be active-low. The GPIO specifier needs to have the GPIO_ACTIVE_HIGH flag set regardless for backwards-compatibilitiy reasons. Note that regulator@3 above your new entry does this wrongly, but next-20191002 should have a fix for that. > + }; > + }; > + > + padctl@3520000 { Don't forget to move this into /cbb as well to match the changes to patch 5/6. > + avdd-usb-supply = <&vdd_usb_3v3>; > + vclamp-usb-supply = <&vdd_1v8ao>; > + ports { Blank line between the above two for better readability. > + usb2-1 { > + vbus-supply = <&vdd_5v0_sys>; > + }; > + usb2-3 { Same here and below. > + vbus-supply = <&vdd_5v_sata>; > + }; > + usb3-0 { > + vbus-supply = <&vdd_5v0_sys>; > + }; > + usb3-3 { > + vbus-supply = <&vdd_5v0_sys>; > + }; > + }; > }; > }; > diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts > index d47cd8c4dd24..410221927dfa 100644 > --- a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts > +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts > @@ -222,4 +222,63 @@ > }; > }; > }; > + > + padctl@3520000 { Same comment as above. Move this into /cbb. > + status = "okay"; > + > + pads { > + usb2 { > + lanes { > + usb2-1 { > + status = "okay"; > + }; > + usb2-2 { And blank lines for readability here and below. > + status = "okay"; > + }; > + usb2-3 { > + status = "okay"; > + }; > + }; > + }; > + usb3 { > + lanes { > + usb3-0 { > + status = "okay"; > + }; > + usb3-3 { > + status = "okay"; > + }; > + }; > + }; > + }; > + > + ports { > + usb2-1 { > + mode = "host"; > + status = "okay"; > + }; > + usb2-3 { > + mode = "host"; > + status = "okay"; > + }; > + usb3-0 { > + nvidia,usb2-companion = <1>; > + status = "okay"; > + }; > + usb3-3 { > + nvidia,usb2-companion = <3>; > + nvidia,disable-gen2; > + status = "okay"; > + }; > + }; > + }; > + > + tegra_xhci: xhci@3610000 { Also needs to move into /cbb. Also, you can drop the tegra_xhci label here since we never reference the controller from elsewhere. Also make sure to update the name here to match the changes in 5/6. Thierry > + status = "okay"; > + phys = <&{/padctl@3520000/pads/usb2/lanes/usb2-1}>, > + <&{/padctl@3520000/pads/usb2/lanes/usb2-3}>, > + <&{/padctl@3520000/pads/usb3/lanes/usb3-0}>, > + <&{/padctl@3520000/pads/usb3/lanes/usb3-3}>; > + phy-names = "usb2-1", "usb2-3", "usb3-0", "usb3-3"; > + }; > }; > -- > 2.17.1 >
On 10/2/19 6:26 PM, Thierry Reding wrote: > On Wed, Oct 02, 2019 at 04:00:51PM +0800, JC Kuo wrote: >> This commit enables XUSB host and pad controller in Tegra194 >> P2972-0000 board. >> >> Signed-off-by: JC Kuo <jckuo@nvidia.com> >> --- >> .../arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 31 +++++++++- >> .../boot/dts/nvidia/tegra194-p2972-0000.dts | 59 +++++++++++++++++++ >> 2 files changed, 89 insertions(+), 1 deletion(-) >> >> diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi >> index 4c38426a6969..cb236edc6a0d 100644 >> --- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi >> +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi >> @@ -229,7 +229,7 @@ >> regulator-max-microvolt = <3300000>; >> }; >> >> - ldo5 { >> + vdd_usb_3v3: ldo5 { >> regulator-name = "VDD_USB_3V3"; >> regulator-min-microvolt = <3300000>; >> regulator-max-microvolt = <3300000>; >> @@ -313,5 +313,34 @@ >> regulator-boot-on; >> enable-active-low; >> }; >> + >> + vdd_5v_sata: regulator@4 { >> + compatible = "regulator-fixed"; >> + reg = <4>; >> + >> + regulator-name = "vdd-5v-sata"; > > Please keep capitalization of regulator names consistent. We use > all-caps and underscores for the others (which mirrors the names in the > schematics), so please stick with that for this one as well. > Sure. I will fix this. > Also, I'm wondering if perhaps you can clarify something here. My > understanding is that SATA functionality is provided via a controller on > the PCI bus. Why is it that we route the 5 V SATA power to the USB port? > Oh wait... this is one of those eSATAp (hybrid) ports that can take > either eSATA or USB, right? Do we need any additional setup to switch > between eSATA and USB modes? Or is this all done in hardware? That is, > if I plug in an eSATA, does it automatically hotplug detect the device > as SATA and if I plug in a USB device, does it automatically detect it > as USB? > Yes, this 5V supply is for the eSATAp port. eSATA cable will deliver the 5V to SATA device. No SATA/USB switch is required as USB SuperSpeed and PCIE-to-SATA controller each has its own UPHY lane. SATA TX/RX pairs also have dedicated pins at the eSATAp connector. External SATA drive can be hotplug and hardware will detect automatically. >> + regulator-min-microvolt = <5000000>; >> + regulator-max-microvolt = <5000000>; >> + gpio = <&gpio TEGRA194_MAIN_GPIO(Z, 1) GPIO_ACTIVE_LOW>; > > This will actually cause a warning on boot. For fixed regulators the > polarity of the enable GPIO is not specified in the GPIO specifier. > Instead you're supposed to use the boolean enable-active-high property > to specify if the enable GPIO is active-high. By default the enable GPIO > is considered to be active-low. The GPIO specifier needs to have the > GPIO_ACTIVE_HIGH flag set regardless for backwards-compatibilitiy > reasons. > > Note that regulator@3 above your new entry does this wrongly, but > next-20191002 should have a fix for that. > Thanks for the information. I will fix this in the next revision. >> + }; >> + }; >> + >> + padctl@3520000 { > > Don't forget to move this into /cbb as well to match the changes to > patch 5/6. > Sure, will do. >> + avdd-usb-supply = <&vdd_usb_3v3>; >> + vclamp-usb-supply = <&vdd_1v8ao>; >> + ports { > > Blank line between the above two for better readability. > Okay. >> + usb2-1 { >> + vbus-supply = <&vdd_5v0_sys>; >> + }; >> + usb2-3 { > > Same here and below. > >> + vbus-supply = <&vdd_5v_sata>; >> + }; >> + usb3-0 { >> + vbus-supply = <&vdd_5v0_sys>; >> + }; >> + usb3-3 { >> + vbus-supply = <&vdd_5v0_sys>; >> + }; >> + }; >> }; >> }; >> diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts >> index d47cd8c4dd24..410221927dfa 100644 >> --- a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts >> +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts >> @@ -222,4 +222,63 @@ >> }; >> }; >> }; >> + >> + padctl@3520000 { > > Same comment as above. Move this into /cbb. > >> + status = "okay"; >> + >> + pads { >> + usb2 { >> + lanes { >> + usb2-1 { >> + status = "okay"; >> + }; >> + usb2-2 { > > And blank lines for readability here and below. > >> + status = "okay"; >> + }; >> + usb2-3 { >> + status = "okay"; >> + }; >> + }; >> + }; >> + usb3 { >> + lanes { >> + usb3-0 { >> + status = "okay"; >> + }; >> + usb3-3 { >> + status = "okay"; >> + }; >> + }; >> + }; >> + }; >> + >> + ports { >> + usb2-1 { >> + mode = "host"; >> + status = "okay"; >> + }; >> + usb2-3 { >> + mode = "host"; >> + status = "okay"; >> + }; >> + usb3-0 { >> + nvidia,usb2-companion = <1>; >> + status = "okay"; >> + }; >> + usb3-3 { >> + nvidia,usb2-companion = <3>; >> + nvidia,disable-gen2; >> + status = "okay"; >> + }; >> + }; >> + }; >> + >> + tegra_xhci: xhci@3610000 { > > Also needs to move into /cbb. Also, you can drop the tegra_xhci label > here since we never reference the controller from elsewhere. > > Also make sure to update the name here to match the changes in 5/6. > Got it. Thanks for the reminder. > Thierry > >> + status = "okay"; >> + phys = <&{/padctl@3520000/pads/usb2/lanes/usb2-1}>, >> + <&{/padctl@3520000/pads/usb2/lanes/usb2-3}>, >> + <&{/padctl@3520000/pads/usb3/lanes/usb3-0}>, >> + <&{/padctl@3520000/pads/usb3/lanes/usb3-3}>; >> + phy-names = "usb2-1", "usb2-3", "usb3-0", "usb3-3"; >> + }; >> }; >> -- >> 2.17.1 >>
diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi index 4c38426a6969..cb236edc6a0d 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2888.dtsi @@ -229,7 +229,7 @@ regulator-max-microvolt = <3300000>; }; - ldo5 { + vdd_usb_3v3: ldo5 { regulator-name = "VDD_USB_3V3"; regulator-min-microvolt = <3300000>; regulator-max-microvolt = <3300000>; @@ -313,5 +313,34 @@ regulator-boot-on; enable-active-low; }; + + vdd_5v_sata: regulator@4 { + compatible = "regulator-fixed"; + reg = <4>; + + regulator-name = "vdd-5v-sata"; + regulator-min-microvolt = <5000000>; + regulator-max-microvolt = <5000000>; + gpio = <&gpio TEGRA194_MAIN_GPIO(Z, 1) GPIO_ACTIVE_LOW>; + }; + }; + + padctl@3520000 { + avdd-usb-supply = <&vdd_usb_3v3>; + vclamp-usb-supply = <&vdd_1v8ao>; + ports { + usb2-1 { + vbus-supply = <&vdd_5v0_sys>; + }; + usb2-3 { + vbus-supply = <&vdd_5v_sata>; + }; + usb3-0 { + vbus-supply = <&vdd_5v0_sys>; + }; + usb3-3 { + vbus-supply = <&vdd_5v0_sys>; + }; + }; }; }; diff --git a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts index d47cd8c4dd24..410221927dfa 100644 --- a/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts +++ b/arch/arm64/boot/dts/nvidia/tegra194-p2972-0000.dts @@ -222,4 +222,63 @@ }; }; }; + + padctl@3520000 { + status = "okay"; + + pads { + usb2 { + lanes { + usb2-1 { + status = "okay"; + }; + usb2-2 { + status = "okay"; + }; + usb2-3 { + status = "okay"; + }; + }; + }; + usb3 { + lanes { + usb3-0 { + status = "okay"; + }; + usb3-3 { + status = "okay"; + }; + }; + }; + }; + + ports { + usb2-1 { + mode = "host"; + status = "okay"; + }; + usb2-3 { + mode = "host"; + status = "okay"; + }; + usb3-0 { + nvidia,usb2-companion = <1>; + status = "okay"; + }; + usb3-3 { + nvidia,usb2-companion = <3>; + nvidia,disable-gen2; + status = "okay"; + }; + }; + }; + + tegra_xhci: xhci@3610000 { + status = "okay"; + phys = <&{/padctl@3520000/pads/usb2/lanes/usb2-1}>, + <&{/padctl@3520000/pads/usb2/lanes/usb2-3}>, + <&{/padctl@3520000/pads/usb3/lanes/usb3-0}>, + <&{/padctl@3520000/pads/usb3/lanes/usb3-3}>; + phy-names = "usb2-1", "usb2-3", "usb3-0", "usb3-3"; + }; };
This commit enables XUSB host and pad controller in Tegra194 P2972-0000 board. Signed-off-by: JC Kuo <jckuo@nvidia.com> --- .../arm64/boot/dts/nvidia/tegra194-p2888.dtsi | 31 +++++++++- .../boot/dts/nvidia/tegra194-p2972-0000.dts | 59 +++++++++++++++++++ 2 files changed, 89 insertions(+), 1 deletion(-)