| Message ID | 20190410053728.17374-1-lokeshvutla@ti.com (mailing list archive) |
|---|---|
| Headers | show |
| Series | soc: ti: k3-am654: Allow for exclusive and shared device requests | expand |
Hi Rob, Tero, On 10/04/19 11:07 AM, Lokesh Vutla wrote: > Sysfw provides an option for requesting exclusive access for a > device using the flags MSG_FLAG_DEVICE_EXCLUSIVE. If this flag is > not used, the device is meant to be shared across hosts. Once a device > is requested from a host with this flag set, any request to this > device from a different host will be nacked by sysfw. > > Current tisci firmware and pm drivers always requests for device with > exclusive permissions set. But this is not be true for certain devices > that are expcted to be shared across different host contexts. > So add support for getting the shared or exclusive permissions from DT > and request firmware accordingly. > If there are no comments on this series, can this be merged? Thanks and regards, Lokesh > Changes since v2: > - Added macros for new power-domain cell > - Rebased on top of v5.1-rc4 > - Updated commit messages. > > Lokesh Vutla (5): > firmware: ti_sci: Allow for device shared and exclusive requests > dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared > access > soc: ti: ti_sci_pm_domains: Add support for exclusive and shared > access > soc: ti: ti_sci_pm_domains: Switch to SPDX Licensing > arm64: dts: ti: k3-am654: Update the power domain cells > > .../bindings/soc/ti/sci-pm-domain.txt | 11 ++++- > MAINTAINERS | 1 + > arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 32 ++++++------- > arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi | 10 ++--- > arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi | 6 +-- > arch/arm64/boot/dts/ti/k3-am65.dtsi | 1 + > drivers/firmware/ti_sci.c | 45 ++++++++++++++++++- > drivers/soc/ti/ti_sci_pm_domains.c | 33 +++++++++----- > include/dt-bindings/soc/ti,sci_pm_domain.h | 9 ++++ > include/linux/soc/ti/ti_sci_protocol.h | 3 ++ > 10 files changed, 112 insertions(+), 39 deletions(-) > create mode 100644 include/dt-bindings/soc/ti,sci_pm_domain.h >
Sysfw provides an option for requesting exclusive access for a device using the flags MSG_FLAG_DEVICE_EXCLUSIVE. If this flag is not used, the device is meant to be shared across hosts. Once a device is requested from a host with this flag set, any request to this device from a different host will be nacked by sysfw. Current tisci firmware and pm drivers always requests for device with exclusive permissions set. But this is not be true for certain devices that are expcted to be shared across different host contexts. So add support for getting the shared or exclusive permissions from DT and request firmware accordingly. Changes since v2: - Added macros for new power-domain cell - Rebased on top of v5.1-rc4 - Updated commit messages. Lokesh Vutla (5): firmware: ti_sci: Allow for device shared and exclusive requests dt-bindings: ti_sci_pm_domains: Add support for exclusive and shared access soc: ti: ti_sci_pm_domains: Add support for exclusive and shared access soc: ti: ti_sci_pm_domains: Switch to SPDX Licensing arm64: dts: ti: k3-am654: Update the power domain cells .../bindings/soc/ti/sci-pm-domain.txt | 11 ++++- MAINTAINERS | 1 + arch/arm64/boot/dts/ti/k3-am65-main.dtsi | 32 ++++++------- arch/arm64/boot/dts/ti/k3-am65-mcu.dtsi | 10 ++--- arch/arm64/boot/dts/ti/k3-am65-wakeup.dtsi | 6 +-- arch/arm64/boot/dts/ti/k3-am65.dtsi | 1 + drivers/firmware/ti_sci.c | 45 ++++++++++++++++++- drivers/soc/ti/ti_sci_pm_domains.c | 33 +++++++++----- include/dt-bindings/soc/ti,sci_pm_domain.h | 9 ++++ include/linux/soc/ti/ti_sci_protocol.h | 3 ++ 10 files changed, 112 insertions(+), 39 deletions(-) create mode 100644 include/dt-bindings/soc/ti,sci_pm_domain.h