| Message ID | 1417393247-4479-12-git-send-email-christophe-h.ricard@st.com (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Mon, Dec 01, 2014 at 12:20:43AM +0000, Christophe Ricard wrote: > st33zp24 tpm can be seen as a trivial i2c device as other i2c tpm. > However several other properties needs to be documented such as lpcpd. > > Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> > Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> > --- > .../devicetree/bindings/security/tpm/st33zp24.txt | 36 ++++++++++++++++++++++ > 1 file changed, 36 insertions(+) > create mode 100644 Documentation/devicetree/bindings/security/tpm/st33zp24.txt > > diff --git a/Documentation/devicetree/bindings/security/tpm/st33zp24.txt b/Documentation/devicetree/bindings/security/tpm/st33zp24..txt > new file mode 100644 > index 0000000..eb48222 > --- /dev/null > +++ b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt > @@ -0,0 +1,36 @@ > +* STMicroelectronics SAS. ST33ZP24 TPM SoC > + > +Required properties: > +- compatible: Should be "st,st33zp24_i2c". s/_/-/ in property names and compatible strings, please. > +- clock-frequency: I²C work frequency. > +- reg: address on the bus > + > +Optional ST33ZP24 Properties: > +- interrupt-parent: phandle for the interrupt gpio controller > +- interrupts: GPIO interrupt to which the chip is connected > +- lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 state. > +If set vps must present when the platform is going into sleep/hibernate mode. What is 'vps'? Mark. > + > +Optional SoC Specific Properties: > +- pinctrl-names: Contains only one value - "default". > +- pintctrl-0: Specifies the pin control groups used for this controller. > + > +Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2): > + > +&i2c2 { > + > + status = "okay"; > + > + st33zp24: st33zp24@13 { > + > + compatible = "st,st33zp24_i2c"; > + > + reg = <0x013>; > + clock-frequency = <400000>; > + > + interrupt-parent = <&gpio5>; > + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; > + > + lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>; > + }; > +}; > -- > 2.1.0 > > -- > 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 > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk
Hi Mark, Does st,st33zp24-i2c as a compatible string would fit better here ? VPS stands for Voltage power supply. I think i should rephrase it: "If set, power must be present when the platform is going into sleep/hibernate mode." Would it be ok ? Best Regards Christophe 2014-12-01 11:46 GMT+01:00 Mark Rutland <mark.rutland@arm.com>: > On Mon, Dec 01, 2014 at 12:20:43AM +0000, Christophe Ricard wrote: > > st33zp24 tpm can be seen as a trivial i2c device as other i2c tpm. > > However several other properties needs to be documented such as lpcpd. > > > > Reviewed-by: Jason Gunthorpe <jgunthorpe@obsidianresearch.com> > > Signed-off-by: Christophe Ricard <christophe-h.ricard@st.com> > > --- > > .../devicetree/bindings/security/tpm/st33zp24.txt | 36 > ++++++++++++++++++++++ > > 1 file changed, 36 insertions(+) > > create mode 100644 > Documentation/devicetree/bindings/security/tpm/st33zp24.txt > > > > diff --git a/Documentation/devicetree/bindings/security/tpm/st33zp24.txt > b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt > > new file mode 100644 > > index 0000000..eb48222 > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt > > @@ -0,0 +1,36 @@ > > +* STMicroelectronics SAS. ST33ZP24 TPM SoC > > + > > +Required properties: > > +- compatible: Should be "st,st33zp24_i2c". > > s/_/-/ in property names and compatible strings, please. > > > +- clock-frequency: I²C work frequency. > > +- reg: address on the bus > > + > > +Optional ST33ZP24 Properties: > > +- interrupt-parent: phandle for the interrupt gpio controller > > +- interrupts: GPIO interrupt to which the chip is connected > > +- lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 > state. > > +If set vps must present when the platform is going into sleep/hibernate > mode. > > What is 'vps'? > > Mark. > > > + > > +Optional SoC Specific Properties: > > +- pinctrl-names: Contains only one value - "default". > > +- pintctrl-0: Specifies the pin control groups used for this controller. > > + > > +Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2): > > + > > +&i2c2 { > > + > > + status = "okay"; > > + > > + st33zp24: st33zp24@13 { > > + > > + compatible = "st,st33zp24_i2c"; > > + > > + reg = <0x013>; > > + clock-frequency = <400000>; > > + > > + interrupt-parent = <&gpio5>; > > + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; > > + > > + lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>; > > + }; > > +}; > > -- > > 2.1.0 > > > > -- > > 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 > > > ------------------------------------------------------------------------------ Download BIRT iHub F-Type - The Free Enterprise-Grade BIRT Server from Actuate! Instantly Supercharge Your Business Reports and Dashboards with Interactivity, Sharing, Native Excel Exports, App Integration & more Get technology previously reserved for billion-dollar corporations, FREE http://pubads.g.doubleclick.net/gampad/clk?id=157005751&iu=/4140/ostg.clktrk
diff --git a/Documentation/devicetree/bindings/security/tpm/st33zp24.txt b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt new file mode 100644 index 0000000..eb48222 --- /dev/null +++ b/Documentation/devicetree/bindings/security/tpm/st33zp24.txt @@ -0,0 +1,36 @@ +* STMicroelectronics SAS. ST33ZP24 TPM SoC + +Required properties: +- compatible: Should be "st,st33zp24_i2c". +- clock-frequency: I²C work frequency. +- reg: address on the bus + +Optional ST33ZP24 Properties: +- interrupt-parent: phandle for the interrupt gpio controller +- interrupts: GPIO interrupt to which the chip is connected +- lpcpd-gpios: Output GPIO pin used for ST33ZP24 power management D1/D2 state. +If set vps must present when the platform is going into sleep/hibernate mode. + +Optional SoC Specific Properties: +- pinctrl-names: Contains only one value - "default". +- pintctrl-0: Specifies the pin control groups used for this controller. + +Example (for ARM-based BeagleBoard xM with ST33ZP24 on I2C2): + +&i2c2 { + + status = "okay"; + + st33zp24: st33zp24@13 { + + compatible = "st,st33zp24_i2c"; + + reg = <0x013>; + clock-frequency = <400000>; + + interrupt-parent = <&gpio5>; + interrupts = <7 IRQ_TYPE_LEVEL_HIGH>; + + lpcpd-gpios = <&gpio5 15 GPIO_ACTIVE_HIGH>; + }; +};