| Message ID | 1498492513-29771-1-git-send-email-sudeep.holla@arm.com |
|---|---|
| Headers | show |
| Series | firmware: ARM System Control and Management Interface(SCMI) support | expand |
On Mon, Jun 26, 2017 at 04:55:05PM +0100, Sudeep Holla wrote: > Many users of the mailbox controllers depend on the shared memory between the > two end points to exchange the main data while using simple doorbell mechanism > to alert the end points of the presence of a message. "dt-bindings: mailbox: ..." for the subject. > > This patch defines device tree bindings to represent such shared memory in a > generic way. > > Cc: Rob Herring <robh+dt@kernel.org> > Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> > --- > .../devicetree/bindings/mailbox/mailbox.txt | 28 ++++++++++++++++++++++ > 1 file changed, 28 insertions(+) Otherwise, Acked-by: Rob Herring <robh@kernel.org> -- 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
On 28/06/17 23:56, Rob Herring wrote: > On Mon, Jun 26, 2017 at 04:55:05PM +0100, Sudeep Holla wrote: >> Many users of the mailbox controllers depend on the shared memory between the >> two end points to exchange the main data while using simple doorbell mechanism >> to alert the end points of the presence of a message. > > "dt-bindings: mailbox: ..." for the subject. > Fixed locally now. >> >> This patch defines device tree bindings to represent such shared memory in a >> generic way. >> >> Cc: Rob Herring <robh+dt@kernel.org> >> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> >> --- >> .../devicetree/bindings/mailbox/mailbox.txt | 28 ++++++++++++++++++++++ >> 1 file changed, 28 insertions(+) > > Otherwise, > > Acked-by: Rob Herring <robh@kernel.org> > Thanks -- Regards, Sudeep -- 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
Hi all, Let me begin admitting that we are introducing yet another protocol to achieve same things as many existing protocols like ARM SCPI, TI SCI, QCOM RPM, Nvidia Tegra BPMP, and so on. All I can say is that this new ARM System Control and Management Interface(SCMI) is more flexible and easily extensible than any of the existing ones. Many vendors were involved in the making of this formal specification and is now officially published[1]. There is a strong trend in the industry to provide micro-controllers in systems to abstract various power, or other system management tasks. These controllers usually have similar interfaces, both in terms of the functions that are provided by them, and in terms of how requests are communicated to them. This specification is to standardise and avoid (any further) fragmentation in the design of such interface by various vendors. This patch set is intended to get feedback on the design and structure of the code. This is not complete and not fully tested due to non-availability of firmware with full feature set at this time. It currently doesn't support notification, asynchronous/delayed response, perf/power statistics region and sensor register region to name a few. I have borrowed some of the ideas of message allocation/management from TI SCI. I had previously posted RFC[2]. Changes RFC->v1: - Add generic mailbox binding for shared memory(Rob H) - Dropped compatibles per protocol(Suggested by Matt S) - Dropped lot of unnecessary pointer casting(Arnd B) - Dropped packing of structures(Arnd B) - Few other changes/additions based initial testing with firmware providing SCMI interface to OSPM -- Regards, Sudeep [1] http://infocenter.arm.com/help/topic/com.arm.doc.den0056a/index.html Sudeep Holla (9): Documentation: dt-bindings: add support for mailbox client shared memory Documentation: add DT binding for ARM System Control and Management Interface(SCMI) protocol firmware: arm_scmi: add basic driver infrastructure for SCMI firmware: arm_scmi: add common infrastructure and support for base protocol firmware: arm_scmi: add initial support for performance protocol firmware: arm_scmi: add initial support for clock protocol firmware: arm_scmi: add initial support for power protocol firmware: arm_scmi: add initial support for sensor protocol firmware: arm_scmi: probe and initialise all the supported protocols Documentation/devicetree/bindings/arm/arm,scmi.txt | 175 +++++ .../devicetree/bindings/mailbox/mailbox.txt | 28 + drivers/firmware/Kconfig | 21 + drivers/firmware/Makefile | 1 + drivers/firmware/arm_scmi/Makefile | 2 + drivers/firmware/arm_scmi/base.c | 293 +++++++ drivers/firmware/arm_scmi/clock.c | 339 ++++++++ drivers/firmware/arm_scmi/common.h | 126 +++ drivers/firmware/arm_scmi/driver.c | 869 +++++++++++++++++++++ drivers/firmware/arm_scmi/perf.c | 511 ++++++++++++ drivers/firmware/arm_scmi/power.c | 242 ++++++ drivers/firmware/arm_scmi/sensors.c | 286 +++++++ include/linux/scmi_protocol.h | 215 +++++ 13 files changed, 3108 insertions(+) create mode 100644 Documentation/devicetree/bindings/arm/arm,scmi.txt create mode 100644 drivers/firmware/arm_scmi/Makefile create mode 100644 drivers/firmware/arm_scmi/base.c create mode 100644 drivers/firmware/arm_scmi/clock.c create mode 100644 drivers/firmware/arm_scmi/common.h create mode 100644 drivers/firmware/arm_scmi/driver.c create mode 100644 drivers/firmware/arm_scmi/perf.c create mode 100644 drivers/firmware/arm_scmi/power.c create mode 100644 drivers/firmware/arm_scmi/sensors.c create mode 100644 include/linux/scmi_protocol.h -- 2.7.4 -- 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