| Message ID | 1464520323-19531-3-git-send-email-carlo@caione.org (mailing list archive) |
|---|---|
| State | Superseded, archived |
| Headers | show |
On Sun, May 29, 2016 at 01:12:02PM +0200, Carlo Caione wrote: > From: Carlo Caione <carlo@endlessm.com> > > Add the binding documentation for the Amlogic secure monitor driver. > > Signed-off-by: Carlo Caione <carlo@endlessm.com> > --- > .../bindings/firmware/meson/meson_sm.txt | 33 ++++++++++++++++++++++ > 1 file changed, 33 insertions(+) > create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt > > diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt > new file mode 100644 > index 0000000..6f0b5bc > --- /dev/null > +++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt > @@ -0,0 +1,33 @@ > +* Amlogic Secure Monitor > + > +In the Amlogic SoCs the Secure Monitor code is used to provide access to the > +NVMEM, enable JTAG, set USB boot, etc... > + > +Required properties for the secure monitor node: > +- compatible: Should be "amlogic,meson-gxbb-sm" > + > +Example: > + > + firmware { > + compatible = "simple-bus"; Drop this. Sorry, but no abusing simple-bus to get automagic creation of your platform device. > + > + sm: secure-monitor { > + compatible = "amlogic,meson-gxbb-sm"; > + }; > + }; > + > +Example of the node using the secure monitor: > + > + #include <dt-bindings/firmware/meson-sm.h> > + > + ... > + > + efuse: efuse { > + compatible = "amlogic,meson-gxbb-efuse"; > + secure-monitor = <&sm>; Why do you need this? Given there can only be one node, just use of_find_compatible_node(); > + #address-cells = <1>; > + #size-cells = <1>; > + > + ... > + }; > + > -- > 2.7.4 >
On 02/06/16 12:14, Rob Herring wrote: > On Sun, May 29, 2016 at 01:12:02PM +0200, Carlo Caione wrote: > > From: Carlo Caione <carlo@endlessm.com> > > > > Add the binding documentation for the Amlogic secure monitor driver. > > > > Signed-off-by: Carlo Caione <carlo@endlessm.com> > > --- > > .../bindings/firmware/meson/meson_sm.txt | 33 ++++++++++++++++++++++ > > 1 file changed, 33 insertions(+) > > create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt > > > > diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt > > new file mode 100644 > > index 0000000..6f0b5bc > > --- /dev/null > > +++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt > > @@ -0,0 +1,33 @@ > > +* Amlogic Secure Monitor > > + > > +In the Amlogic SoCs the Secure Monitor code is used to provide access to the > > +NVMEM, enable JTAG, set USB boot, etc... > > + > > +Required properties for the secure monitor node: > > +- compatible: Should be "amlogic,meson-gxbb-sm" > > + > > +Example: > > + > > + firmware { > > + compatible = "simple-bus"; > > Drop this. Sorry, but no abusing simple-bus to get automagic creation of > your platform device. Sounds reasonable. I can hook this up to some *_initcall. What about introducing a new FIRMWARE_OF_DECLARE() ? Cheers,
On Fri, Jun 3, 2016 at 4:25 AM, Carlo Caione <carlo@caione.org> wrote: > On 02/06/16 12:14, Rob Herring wrote: >> On Sun, May 29, 2016 at 01:12:02PM +0200, Carlo Caione wrote: >> > From: Carlo Caione <carlo@endlessm.com> >> > >> > Add the binding documentation for the Amlogic secure monitor driver. >> > >> > Signed-off-by: Carlo Caione <carlo@endlessm.com> >> > --- >> > .../bindings/firmware/meson/meson_sm.txt | 33 ++++++++++++++++++++++ >> > 1 file changed, 33 insertions(+) >> > create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt >> > >> > diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt >> > new file mode 100644 >> > index 0000000..6f0b5bc >> > --- /dev/null >> > +++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt >> > @@ -0,0 +1,33 @@ >> > +* Amlogic Secure Monitor >> > + >> > +In the Amlogic SoCs the Secure Monitor code is used to provide access to the >> > +NVMEM, enable JTAG, set USB boot, etc... >> > + >> > +Required properties for the secure monitor node: >> > +- compatible: Should be "amlogic,meson-gxbb-sm" >> > + >> > +Example: >> > + >> > + firmware { >> > + compatible = "simple-bus"; >> >> Drop this. Sorry, but no abusing simple-bus to get automagic creation of >> your platform device. > > Sounds reasonable. I can hook this up to some *_initcall. What about > introducing a new FIRMWARE_OF_DECLARE() ? Please don't add FIRMWARE_OF_DECLARE unless it needs to be early. Rob
On 02/06/16 12:14, Rob Herring wrote: > On Sun, May 29, 2016 at 01:12:02PM +0200, Carlo Caione wrote: [...] > > +Example of the node using the secure monitor: > > + > > + #include <dt-bindings/firmware/meson-sm.h> > > + > > + ... > > + > > + efuse: efuse { > > + compatible = "amlogic,meson-gxbb-efuse"; > > + secure-monitor = <&sm>; > > Why do you need this? Given there can only be one node, just use > of_find_compatible_node(); of_find_compatible_node() in the driver works fine if we have only one possible compatible property for the secure-monitor node. In this case we have a different compatible property for each SoC (GXBB in this case) so I think having the phandle in the DT is still the best thing to do. Any thought on this Rob?
diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt new file mode 100644 index 0000000..6f0b5bc --- /dev/null +++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt @@ -0,0 +1,33 @@ +* Amlogic Secure Monitor + +In the Amlogic SoCs the Secure Monitor code is used to provide access to the +NVMEM, enable JTAG, set USB boot, etc... + +Required properties for the secure monitor node: +- compatible: Should be "amlogic,meson-gxbb-sm" + +Example: + + firmware { + compatible = "simple-bus"; + + sm: secure-monitor { + compatible = "amlogic,meson-gxbb-sm"; + }; + }; + +Example of the node using the secure monitor: + + #include <dt-bindings/firmware/meson-sm.h> + + ... + + efuse: efuse { + compatible = "amlogic,meson-gxbb-efuse"; + secure-monitor = <&sm>; + #address-cells = <1>; + #size-cells = <1>; + + ... + }; +