| Message ID | 20180330074751.25987-4-boris.brezillon@bootlin.com |
|---|---|
| State | New |
| Headers | show |
| Series | Add the I3C subsystem | expand |
On Fri, Mar 30, 2018 at 09:47:44AM +0200, Boris Brezillon wrote: > Document sysfs files/directories/symlinks exposed by the I3C subsystem. > > Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> > --- > Changes in v2: > - new patch > --- > Documentation/ABI/testing/sysfs-bus-i3c | 95 +++++++++++++++++++++++++++++++++ > 1 file changed, 95 insertions(+) > create mode 100644 Documentation/ABI/testing/sysfs-bus-i3c > > diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c > new file mode 100644 > index 000000000000..5e88cc093e0e > --- /dev/null > +++ b/Documentation/ABI/testing/sysfs-bus-i3c > @@ -0,0 +1,95 @@ > +What: /sys/bus/i3c/devices/i3c-<bus-id> > +KernelVersion: 4.16 Wrong kernel versions :) -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Greg, On Sun, 29 Apr 2018 15:37:00 +0200 Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote: > On Fri, Mar 30, 2018 at 09:47:44AM +0200, Boris Brezillon wrote: > > Document sysfs files/directories/symlinks exposed by the I3C subsystem. > > > > Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> > > --- > > Changes in v2: > > - new patch > > --- > > Documentation/ABI/testing/sysfs-bus-i3c | 95 +++++++++++++++++++++++++++++++++ > > 1 file changed, 95 insertions(+) > > create mode 100644 Documentation/ABI/testing/sysfs-bus-i3c > > > > diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c > > new file mode 100644 > > index 000000000000..5e88cc093e0e > > --- /dev/null > > +++ b/Documentation/ABI/testing/sysfs-bus-i3c > > @@ -0,0 +1,95 @@ > > +What: /sys/bus/i3c/devices/i3c-<bus-id> > > +KernelVersion: 4.16 > > Wrong kernel versions :) I'll fix that. Thanks, Boris -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Greg, On Sun, Apr 29, 2018 at 3:37 PM, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote: > On Fri, Mar 30, 2018 at 09:47:44AM +0200, Boris Brezillon wrote: >> Document sysfs files/directories/symlinks exposed by the I3C subsystem. >> >> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> >> --- >> Changes in v2: >> - new patch >> --- >> Documentation/ABI/testing/sysfs-bus-i3c | 95 +++++++++++++++++++++++++++++++++ >> 1 file changed, 95 insertions(+) >> create mode 100644 Documentation/ABI/testing/sysfs-bus-i3c >> >> diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c >> new file mode 100644 >> index 000000000000..5e88cc093e0e >> --- /dev/null >> +++ b/Documentation/ABI/testing/sysfs-bus-i3c >> @@ -0,0 +1,95 @@ >> +What: /sys/bus/i3c/devices/i3c-<bus-id> >> +KernelVersion: 4.16 > > Wrong kernel versions :) Do you update these when backporting to stable? ;-) Gr{oetje,eeting}s, Geert
On Wed, May 02, 2018 at 11:47:49AM +0200, Geert Uytterhoeven wrote: > Hi Greg, > > On Sun, Apr 29, 2018 at 3:37 PM, Greg Kroah-Hartman > <gregkh@linuxfoundation.org> wrote: > > On Fri, Mar 30, 2018 at 09:47:44AM +0200, Boris Brezillon wrote: > >> Document sysfs files/directories/symlinks exposed by the I3C subsystem. > >> > >> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> > >> --- > >> Changes in v2: > >> - new patch > >> --- > >> Documentation/ABI/testing/sysfs-bus-i3c | 95 +++++++++++++++++++++++++++++++++ > >> 1 file changed, 95 insertions(+) > >> create mode 100644 Documentation/ABI/testing/sysfs-bus-i3c > >> > >> diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c > >> new file mode 100644 > >> index 000000000000..5e88cc093e0e > >> --- /dev/null > >> +++ b/Documentation/ABI/testing/sysfs-bus-i3c > >> @@ -0,0 +1,95 @@ > >> +What: /sys/bus/i3c/devices/i3c-<bus-id> > >> +KernelVersion: 4.16 > > > > Wrong kernel versions :) > > Do you update these when backporting to stable? ;-) I'm not adding new features/subsystems to stable :) -- To unsubscribe from this list: send the line "unsubscribe linux-gpio" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
Hi Greg, On Wed, May 2, 2018 at 1:10 PM, Greg Kroah-Hartman <gregkh@linuxfoundation.org> wrote: > On Wed, May 02, 2018 at 11:47:49AM +0200, Geert Uytterhoeven wrote: >> On Sun, Apr 29, 2018 at 3:37 PM, Greg Kroah-Hartman >> <gregkh@linuxfoundation.org> wrote: >> > On Fri, Mar 30, 2018 at 09:47:44AM +0200, Boris Brezillon wrote: >> >> Document sysfs files/directories/symlinks exposed by the I3C subsystem. >> >> >> >> Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> >> >> --- >> >> Changes in v2: >> >> - new patch >> >> --- >> >> Documentation/ABI/testing/sysfs-bus-i3c | 95 +++++++++++++++++++++++++++++++++ >> >> 1 file changed, 95 insertions(+) >> >> create mode 100644 Documentation/ABI/testing/sysfs-bus-i3c >> >> >> >> diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c >> >> new file mode 100644 >> >> index 000000000000..5e88cc093e0e >> >> --- /dev/null >> >> +++ b/Documentation/ABI/testing/sysfs-bus-i3c >> >> @@ -0,0 +1,95 @@ >> >> +What: /sys/bus/i3c/devices/i3c-<bus-id> >> >> +KernelVersion: 4.16 >> > >> > Wrong kernel versions :) >> >> Do you update these when backporting to stable? ;-) > > I'm not adding new features/subsystems to stable :) True. So let's leave that for the LTSI patch monkey ;-) Gr{oetje,eeting}s, Geert
diff --git a/Documentation/ABI/testing/sysfs-bus-i3c b/Documentation/ABI/testing/sysfs-bus-i3c new file mode 100644 index 000000000000..5e88cc093e0e --- /dev/null +++ b/Documentation/ABI/testing/sysfs-bus-i3c @@ -0,0 +1,95 @@ +What: /sys/bus/i3c/devices/i3c-<bus-id> +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + An I3C bus. This directory will contain one sub-directory per + I3C device present on the bus. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/current_master +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + Expose the master that owns the bus (<bus-id>-<master-pid>) at + the time this file is read. Note that bus ownership can change + overtime, so there's no guarantee that when the read() call + returns, the value returned is still valid. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/mode +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + I3C bus mode. Can be "pure", "mixed-fast" or "mixed-slow". See + the I3C specification for a detailed description of what each + of these modes implies. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/i3c_scl_frequency +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + The frequency (expressed in Hz) of the SCL signal when + operating in I3C SDR mode. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/i2c_scl_frequency +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + The frequency (expressed in Hz) of the SCL signal when + operating in I2C mode. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid> +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + An I3C device present on I3C bus identified by <bus-id>. Note + that all devices are represented including the master driving + the bus. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>/address +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + Dynamic address assigned to device <bus-id>-<device-pid>. This + address may change if the bus is re-initialized. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>/bcr +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + BCR stands for Bus Characteristics Register and express the + device capabilities in term of speed, maximum read/write + length, etc. See the I3C specification for more details. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>/dcr +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + DCR stands for Device Characteristics Register and express the + device capabilities in term of exposed features. See the I3C + specification for more details. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>/pid +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + PID stands for Provisional ID and is used to uniquely identify + a device on a bus. This PID contains information about the + vendor, the part and an instance ID so that several devices of + the same type can be connected on the same bus. + See the I3C specification for more details. + +What: /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>/hdrcap +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + Expose the HDR (High Data Rate) capabilities of a device. + Returns a list of supported HDR mode, each element is separated + by space. Modes can be "hdr-ddr", "hdr-tsp" and "hdr-tsl". + See the I3C specification for more details about these HDR + modes. + +What: /sys/bus/i3c/devices/<bus-id>-<device-pid> +KernelVersion: 4.16 +Contact: linux-i3c@vger.kernel.org +Description: + These directories are just symbolic links to + /sys/bus/i3c/devices/i3c-<bus-id>/<bus-id>-<device-pid>.
Document sysfs files/directories/symlinks exposed by the I3C subsystem. Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com> --- Changes in v2: - new patch --- Documentation/ABI/testing/sysfs-bus-i3c | 95 +++++++++++++++++++++++++++++++++ 1 file changed, 95 insertions(+) create mode 100644 Documentation/ABI/testing/sysfs-bus-i3c