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* dt-bindings: mailbox: omap: Update bindings for TI K3 SoCsSuman Anna2019-07-101-9/+50
| | | | | | | | | | | | The TI K3 AM65x and J721E family of SoCs have a new Mailbox IP that is based on the existing Mailbox IP present in OMAP architecture based SoCs. Update the existing OMAP Mailbox bindings for this new IP present on TI K3 AM65x and J721E SoCs. The same compatible from AM65x SoCs is reused for J721E SoCs. Signed-off-by: Suman Anna <s-anna@ti.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: mailbox: Document armada-3700-rwtm-mailbox bindingMarek Behun2019-05-091-0/+16
| | | | | | | | | This adds device tree binding documentation for the rWTM BIU mailbox driver on the Armada 37xx SOC (EspressoBin, Turris Mox). Signed-off-by: Marek Behun <marek.behun@nic.cz> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: mailbox: Add Xilinx IPI MailboxWendy Liang2019-03-061-0/+127
| | | | | | | | | | Xilinx ZynqMP IPI(Inter Processor Interrupt) is a hardware block in ZynqMP SoC used for the communication between various processor systems. Signed-off-by: Wendy Liang <wendy.liang@xilinx.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: tegra186-hsp: Add shared mailboxesMikko Perttunen2018-12-211-5/+25
| | | | | | | | | | | | | | | | | | | | | | Shared mailboxes are a mechanism to transport data from one processor in the system to another. They are bidirectional links with both a producer and a consumer. Interrupts are used to let the consumer know when data was written to the mailbox by the producer, and to let the producer know when the consumer has read the data from the mailbox. These interrupts are mapped to one or more "shared interrupts". Typically each processor in the system owns one of these shared interrupts. Add documentation to the device tree bindings about how clients can use mailbox specifiers to request a specific shared mailbox and select which direction they drive. Also document how to specify the shared interrupts in addition to the existing doorbell interrupt. Signed-off-by: Mikko Perttunen <mperttunen@nvidia.com> Acked-by: Jon Hunter <jonathanh@nvidia.com> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: qcom: Add QCS404 APPS Global compatibleBjorn Andersson2018-09-291-0/+1
| | | | | | | | | | Add support for the QCS404 APPS Global block with IPC register at offset 8. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Vinod Koul <vkoul@kernel.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Merge tag 'mailbox-v4.19' of ↵Linus Torvalds2018-08-163-0/+161
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox updates from Jassi Brar: - xgene: potential null pointer fix - omap: switch to spdx license and use of_device_get_match_data() to match data - ti-msgmgr: cleanup and optimisation. New TI specific feature - secure proxy thread. - mediatek: add driver for CMDQ controller. - nxp: add driver for MU controller * tag 'mailbox-v4.19' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox: Add support for i.MX messaging unit dt-bindings: mailbox: imx-mu: add generic MU channel support dt-bindings: arm: fsl: add mu binding doc mailbox: add MODULE_LICENSE() for mtk-cmdq-mailbox.c mailbox: mediatek: Add Mediatek CMDQ driver dt-bindings: soc: Add documentation for the MediaTek GCE unit mailbox: ti-msgmgr: Add support for Secure Proxy dt-bindings: mailbox: Add support for secure proxy threads mailbox: ti-msgmgr: Move the memory region name to descriptor mailbox: ti-msgmgr: Change message count mask to be descriptor based mailbox: ti-msgmgr: Allocate Rx channel resources only on request mailbox: ti-msgmgr: Get rid of unused structure members mailbox/omap: use of_device_get_match_data() to get match data mailbox/omap: switch to SPDX license identifier mailbox: xgene-slimpro: Fix potential NULL pointer dereference
| * dt-bindings: mailbox: imx-mu: add generic MU channel supportOleksij Rempel2018-08-151-3/+23
| | | | | | | | | | | | | | | | | | Each MU has four pairs of rx/tx data register with four rx/tx interrupts which can also be used as a separate channel. Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * dt-bindings: arm: fsl: add mu binding docDong Aisheng2018-08-151-0/+34
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The Messaging Unit module enables two processors within the SoC to communicate and coordinate by passing messages (e.g. data, status and control) through the MU interface. Cc: Shawn Guo <shawnguo@kernel.org> Cc: Sascha Hauer <kernel@pengutronix.de> Cc: Fabio Estevam <fabio.estevam@nxp.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Dong Aisheng <aisheng.dong@nxp.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * dt-bindings: soc: Add documentation for the MediaTek GCE unitHoulong Wei2018-08-031-0/+57
| | | | | | | | | | | | | | | | | | | | This adds documentation for the MediaTek Global Command Engine (GCE) unit found in MT8173 SoCs. Signed-off-by: Houlong Wei <houlong.wei@mediatek.com> Signed-off-by: HS Liao <hs.liao@mediatek.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
| * dt-bindings: mailbox: Add support for secure proxy threadsNishanth Menon2018-08-031-0/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Secure Proxy is another communication scheme in Texas Instrument's devices intended to provide an unique communication path from various processors in the System on Chip(SoC) to a central System Controller. Secure proxy is, in effect, an evolution of current generation Message Manager hardware block found in K2G devices. However the following changes have taken place: Secure Proxy instance exposes "threads" or "proxies" which is primary representation of "a" communication channel. Each thread is preconfigured by System controller configuration based on SoC usage requirements. Secure proxy by itself represents a single "queue" of communication but allows the proxies to be independently operated. Each Secure proxy thread can uniquely have their own error and threshold interrupts allowing for more fine control of IRQ handling. Provide an hardware description of the same for device tree representation. See AM65x Technical Reference Manual (SPRUID7, April 2018) for further details: http://www.ti.com/lit/pdf/spruid7 Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Nishanth Menon <nm@ti.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* | dt-bindings: remove 'interrupt-parent' from bindingsRob Herring2018-07-251-1/+0
|/ | | | | | | | | | | | 'interrupt-parent' is often documented as part of define bindings, but it is really outside the scope of a device binding. It's never required in a given node as it is often inherited from a parent node. Or it can be implicit if a parent node is an 'interrupt-controller' node. So remove it from all the binding files. Cc: Mark Rutland <mark.rutland@arm.com> Cc: devicetree@vger.kernel.org Signed-off-by: Rob Herring <robh@kernel.org>
* dt-bindings: mailbox: Add APSS shared binding for SDM845 SoCsSibi Sankar2018-06-061-0/+1
| | | | | | | | | Include SDM845 APSS shared to the list of possible bindings Signed-off-by: Sibi Sankar <sibis@codeaurora.org> Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: qcom: Add msm8998 hmss compatibleBjorn Andersson2018-06-061-0/+1
| | | | | | | | | The Qualcomm MSM8998 platform has a APCS HMSS GLOBAL block, add the compatible for this. Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: mailbox: add STMicroelectronics STM32 IPCC bindingFabien Dessenne2018-06-061-0/+47
| | | | | | | | | | Add a binding for the STMicroelectronics STM32 IPCC block exposing a mailbox mechanism between two processors. Signed-off-by: Fabien Dessenne <fabien.dessenne@st.com> Signed-off-by: Ludovic Barre <ludovic.barre@st.com> Reviewed-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Merge tag 'mailbox-v4.17' of ↵Linus Torvalds2018-04-061-0/+51
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox updates from Jassi Brar: - New Hi3660 mailbox driver - Fix TEGRA Kconfig warning - Broadcom: use dma_pool_zalloc instead of dma_pool_alloc+memset * tag 'mailbox-v4.17' of git://git.linaro.org/landing-teams/working/fujitsu/integration: mailbox: Add support for Hi3660 mailbox dt-bindings: mailbox: Introduce Hi3660 controller binding mailbox: tegra: relax TEGRA_HSP_MBOX Kconfig dependencies maillbox: bcm-flexrm-mailbox: Use dma_pool_zalloc()
| * dt-bindings: mailbox: Introduce Hi3660 controller bindingLeo Yan2018-03-201-0/+51
| | | | | | | | | | | | | | | | | | | | Introduce a binding for the Hi3660 mailbox controller, the mailbox is used within application processor (AP), communication processor (CP), HIFI and MCU, etc. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* | dt-bindings: mailbox: add support for mailbox client shared memorySudeep Holla2018-02-281-0/+28
|/ | | | | | | | | | | | | 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. This patch defines device tree bindings to represent such shared memory in a generic way. Cc: Mark Rutland <mark.rutland@arm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
* Merge tag 'mailbox-v4.16' of ↵Linus Torvalds2018-02-041-0/+18
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox updates from Jassi Brar: "Misc driver changes only: - TI-MsgMgr: Fix print format for a printk - TI-MSgMgr: SPDX license switch for the driver - QCOM-IPC: Convert driver to use regmap - QCOM-IPC: Spawn sibling clock device from mailbox driver" * tag 'mailbox-v4.16' of git://git.linaro.org/landing-teams/working/fujitsu/integration: dt-bindings: mailbox: qcom: Document the APCS clock binding mailbox: qcom: Create APCS child device for clock controller mailbox: qcom: Convert APCS IPC driver to use regmap mailbox: ti-msgmgr: Use %zu for size_t print format mailbox: ti-msgmgr: Switch to SPDX Licensing
| * dt-bindings: mailbox: qcom: Document the APCS clock bindingGeorgi Djakov2018-02-041-0/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | Update the binding documentation for APCS to mention that the APCS hardware block also expose a clock controller functionality. The APCS clock controller is a mux and half-integer divider. It has the main CPU PLL as an input and provides the clock for the application CPU. Signed-off-by: Georgi Djakov <georgi.djakov@linaro.org> Reviewed-by: Rob Herring <robh@kernel.org> Acked-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* | dt-bindings: Use lower case hex in unit-addressesRob Herring2017-12-261-1/+1
| | | | | | | | | | | | | | | | | | | | | | DT unit addresses should be lower case hex. Fix all the binding examples. Converted with the following command from Krzysztof Kozlowski: sed -e 's/@\([a-fA-F0-9_-]*\) {/@\L\1 {/' -i $(find Documentation/devicetree/bindings -name '*.txt') Signed-off-by: Rob Herring <robh@kernel.org>
* | dt-bindings: mailbox: ti,message-manager: Fix interrupt name errorNishanth Menon2017-12-151-2/+2
|/ | | | | | | | | | | | | Message Manager's mailbox interrupts are queue based and not proxy specific. The interrupt names are wrong in the binding, however correctly reflected in the example provided. Remove the relation to proxy ID in the documentation of binding. Existing device tree descriptions follow the correct conventions already and documentation update has been missed. Signed-off-by: Nishanth Menon <nm@ti.com> Reviewed-by: Lokesh Vutla <lokeshvutla@ti.com> Signed-off-by: Rob Herring <robh@kernel.org>
* dt-bindings: Remove leading 0x from bindings notationMathieu Malaterre2017-12-062-4/+4
| | | | | | | | | | | | | | | | Improve the binding example by removing all the leading 0x to fix the following dtc warnings: Warning (unit_address_format): Node /XXX unit name should not have leading "0x" Converted using the following command: find Documentation/devicetree/bindings -name "*.txt" -exec sed -i -e 's/([^ ])\@0x([0-9a-f])/$1\@$2/g' {} + This is a follow up to commit 48c926cd3414 Signed-off-by: Mathieu Malaterre <malat@debian.org> Signed-off-by: Rob Herring <robh@kernel.org>
* dt-bindings: Remove leading zeros from bindings notationMarco Franchi2017-11-091-1/+1
| | | | | | | | | | | | | | | | Improve the binding example by removing all the leading zeros to fix the following dtc warnings: Warning (unit_address_format): Node /XXX unit name should not have leading 0s Converted using the following command: perl -p -i -e 's/\@0+([0-9a-f])/\@$1/g' `find ./Documentation/devicetree/bindings "*.txt"` Some unnecessary changes were manually fixed. Signed-off-by: Marco Franchi <marco.franchi@nxp.com> Signed-off-by: Rob Herring <robh@kernel.org>
* dt-bindings: mailbox: Introduce Qualcomm APCS global bindingBjorn Andersson2017-06-141-0/+46
| | | | | | | | | Introduce a binding for the Qualcomm APCS global block, exposing a mailbox for invoking interrupts on remote processors in the system. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: Add DT bindings info for FlexRM ring managerAnup Patel2017-03-281-0/+59
| | | | | | | | | | | This patch adds device tree bindings document for the FlexRM ring manager found on Broadcom iProc SoCs. Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Anup Patel <anup.patel@broadcom.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: mailbox: Update doc with NSP PDC/mailbox supportSteve Lin2017-03-281-2/+4
| | | | | | | | | | Update the DT bindings documentation to reflect the new NSP version of PDC driver compatibility string. Signed-off-by: Steve Lin <steven.lin1@broadcom.com> Acked-by: Jon Mason <jon.mason@broadcom.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Merge tag 'armsoc-drivers' of ↵Linus Torvalds2016-12-151-0/+52
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc Pull ARM SoC driver updates from Arnd Bergmann: "Driver updates for ARM SoCs, including a couple of newly added drivers: - A new driver for the power management controller on TI Keystone - Support for the prerelease "SCPI" firmware protocol that ended up being shipped by Amlogic in their GXBB SoC. - A soc_device can now be matched using a glob from inside the kernel, when another driver wants to know the specific chip it is running on and cannot find out from DT, firmware or hardware. - Renesas SoCs now support identification through the soc_device interface, both in user space and kernel. - Renesas r8a7743 and r8a7745 gain support for their system controller - A new checking module for the ARM "PSCI" (not to be confused with "SCPI" mentioned above) firmware interface. - A new driver for the Tegra GMI memory interface - Support for the Tegra firmware interfaces with their power management controllers As usual, the updates for the reset controller framework are merged here, as they tend to touch multiple SoCs as well, including a new driver for the Oxford (now Broadcom) OX820 chip and the Tegra bpmp interface. The existing drivers for Atmel, Qualcomm, NVIDIA, TI Davinci, and Rockchips SoCs see some further updates" * tag 'armsoc-drivers' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (76 commits) misc: sram: remove useless #ifdef drivers: psci: Allow PSCI node to be disabled drivers: psci: PSCI checker module soc: renesas: Identify SoC and register with the SoC bus firmware: qcom: scm: Return PTR_ERR when devm_clk_get fails firmware: qcom: scm: Remove core, iface and bus clocks dependency dt-bindings: firmware: scm: Add MSM8996 DT bindings memory: da8xx-ddrctl: drop the call to of_flat_dt_get_machine_name() bus: da8xx-mstpri: drop the call to of_flat_dt_get_machine_name() ARM: shmobile: Document DT bindings for Product Register soc: renesas: rcar-sysc: add R8A7745 support reset: Add Tegra BPMP reset driver dt-bindings: firmware: Allow child nodes inside the Tegra BPMP dt-bindings: Add power domains to Tegra BPMP firmware firmware: tegra: Add BPMP support firmware: tegra: Add IVC library dt-bindings: firmware: Add bindings for Tegra BPMP mailbox: tegra-hsp: Use after free in tegra_hsp_remove_doorbells() mailbox: Add Tegra HSP driver firmware: arm_scpi: add support for pre-v1.0 SCPI compatible ...
| * dt-bindings: mailbox: Add Tegra HSP bindingJoseph Lo2016-11-151-0/+52
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add DT binding for the Hardware Synchronization Primitives (HSP). The HSP is designed for the processors to share resources and communicate with one another. A set of hardware synchronization primitives for interprocessor communication (IPC) is provided. IPC protocols can use use these hardware synchronization primitives when operating between processors in an AMP configuration. Signed-off-by: Joseph Lo <josephl@nvidia.com> Acked-by: Stephen Warren <swarren@nvidia.com> Acked-by: Rob Herring <robh@kernel.org> Acked-by: Jon Hunter <jonathanh@nvidia.com> Signed-off-by: Thierry Reding <treding@nvidia.com>
* | DT: binding: bcm2835-mbox: fix address typo in exampleStefan Wahren2016-10-311-1/+1
|/ | | | | | | | | | | The address of the mailbox node in the example has a typo. So fix it accordingly. Signed-off-by: Stefan Wahren <stefan.wahren@i2se.com> Fixes: d4b5c782b9f4 ("dt/bindings: Add binding for the BCM2835 mailbox driver") Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Eric Anholt <eric@anholt.net>
* dt-bindings: mailbox: Add Amlogic Meson MHU BindingsNeil Armstrong2016-09-071-0/+34
| | | | | | Signed-off-by: Neil Armstrong <narmstrong@baylibre.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: add bindings documentation for PDC driver.Rob Rice2016-07-281-0/+23
| | | | | | | | | | | | Add the device tree binding documentation for the PDC hardware in Broadcom iProc SoCs. Signed-off-by: Rob Rice <rob.rice@broadcom.com> Acked-by: Rob Herring <robh@kernel.org> Reviewed-by: Ray Jui <ray.jui@broadcom.com> Reviewed-by: Anup Patel <anup.patel@broadcom.com> Reviewed-by: Scott Branden <scott.branden@broadcom.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Documentation: dt: mailbox: Add TI Message ManagerNishanth Menon2016-03-211-0/+50
| | | | | | | | | | | | | | Message Manager is a hardware block used to communicate with various processor systems within certain Texas Instrument's Keystone generation SoCs. This hardware engine is used to transfer messages from various compute entities(or processors) within the SoC. It is designed to be self contained without needing software initialization for operation. Signed-off-by: Nishanth Menon <nm@ti.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: rockchip-mailbox: Add mailbox controller document on Rockchip SoCsCaesar Wang2016-03-111-0/+32
| | | | | | | | | This add the necessary binding documentation for mailbox found on RK3368 SoC. Signed-off-by: Caesar Wang <wxt@rock-chips.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt-bindings: mailbox: Document Hi6220 mailbox driverLeo Yan2016-03-041-0/+74
| | | | | | | | Document DT binding for Hisilicon Hi6220 mailbox driver. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: mailbox-test: fix the compatible stringSudeep Holla2016-03-041-1/+1
| | | | | | | | | | Underscores are usually forbidden in the compatible strings. So lets remove it before the first users of this is seen. Acked-by: Rob Herring <robh@kernel.org> Acked-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Documentation: mailbox: Add APM X-Gene SLIMpro mailbox dts documentationDuc Dang2016-02-151-0/+35
| | | | | | | | | | This adds the APM X-Gene SLIMpro mailbox device tree node documentation. Signed-off-by: Feng Kan <fkan@apm.com> Signed-off-by: Duc Dang <dhdang@apm.com> Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox/omap: Add ti,mbox-send-noirq quirk to fix AM33xx CPU IdleDave Gerlach2015-10-231-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The mailbox framework controls the transmission queue and requires either its controller implementations or clients to run the state machine for the Tx queue. The OMAP mailbox controller uses a Tx-ready interrupt as the equivalent of a Tx-done interrupt to run this Tx queue state-machine. The WkupM3 processor on AM33xx and AM43xx SoCs is used to offload certain PM tasks, like doing the necessary operations for Device PM suspend/resume or for entering lower c-states during cpuidle. The CPUIdle on AM33xx requires the messages to be sent without having to trigger the Tx-ready interrupts, as the interrupt would immediately terminate the CPUIdle operation. Support for this has been added by introducing a DT quirk, "ti,mbox-send-noirq" and using it to modify the normal OMAP mailbox controller behavior on the sub-mailboxes used to communicate with the WkupM3 remote processor. This also requires the wkup_m3_ipc driver to adjust its mailbox usage logic to run the Tx state machine. NOTE: - AM43xx does not communicate with WkupM3 for CPU Idle, so is not affected by this behavior. But, it uses the same IPC driver for PM suspend/resume functionality, so requires the quirk as well, because of changes to the common wkup_m3_ipc driver. Signed-off-by: Dave Gerlach <d-gerlach@ti.com> [s-anna@ti.com: revise logic and update comments/patch description] Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: dt: Supply bindings for ST's Mailbox IPLee Jones2015-10-171-0/+51
| | | | | Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt: mailbox: Remove 'mbox-names property is discouraged' message from bindingLee Jones2015-06-111-8/+2
| | | | | | | | | A new API call has been introduced which allows channels to be requested by name. This new call uses the 'mbox-names' property, so users need no further discouragement from supplying it. Signed-off-by: Lee Jones <lee.jones@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* dt/bindings: Add binding for the BCM2835 mailbox driverLubomir Rintel2015-06-091-0/+26
| | | | | | | | | | | | | | This patch was split out of Lubomir's original mailbox patch by Eric Anholt, and the required properties documentation and examples have been filled out more completely and updated for the driver being changed to expose a single channel. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Signed-off-by: Craig McGeachie <slapdau@yahoo.com.au> Signed-off-by: Eric Anholt <eric@anholt.net> Acked-by: Lee Jones <lee.jones@linaro.org> Acked-by: Stephen Warren <swarren@wwwdotorg.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* mailbox: arm_mhu: add driver for ARM MHU controllerJassi Brar2015-03-171-0/+43
| | | | | | | | | Add driver for the ARM Primecell Message-Handling-Unit(MHU) controller. Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org> Signed-off-by: Andy Green <andy.green@linaro.org> Signed-off-by: Vincent Yang <vincent.yang@socionext.com> Signed-off-by: Tetsuya Nuriya <nuriya.tetsuya@socionext.com>
* mailbox: Add Altera mailbox driverLey Foon Tan2015-02-061-0/+49
| | | | | | | The Altera mailbox allows for interprocessor communication. It supports only one channel and work as either sender or receiver. Signed-off-by: Ley Foon Tan <lftan@altera.com>
* mailbox/omap: adapt to the new mailbox frameworkSuman Anna2014-11-271-0/+23
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The OMAP mailbox driver and its existing clients (remoteproc for OMAP4+) are adapted to use the generic mailbox framework. The main changes for the adaptation are: - The tasklet used for Tx is replaced with the state machine from the generic mailbox framework. The workqueue used for processing the received messages stays intact for minimizing the effects on the OMAP mailbox clients. - The existing exported client API, omap_mbox_get, omap_mbox_put and omap_mbox_send_msg are deleted, as the framework provides equivalent functionality. A OMAP-specific omap_mbox_request_channel is added though to support non-DT way of requesting mailboxes. - The OMAP mailbox driver is integrated with the mailbox framework through the proper implementations of mbox_chan_ops, except for .last_tx_done and .peek_data. The OMAP mailbox driver does not need these ops, as it is completely interrupt driven. - The OMAP mailbox driver uses a custom of_xlate controller ops that allows phandles for the pargs specifier instead of indexing to avoid any channel registration order dependencies. - The new framework does not support multiple clients operating on a single channel, so the reference counting logic is simplified. - The remoteproc driver (current client) is adapted to use the new API. The notifier callbacks used within this client is replaced with the regular callbacks from the newer framework. - The exported OMAP mailbox API are limited to omap_mbox_save_ctx, omap_mbox_restore_ctx, omap_mbox_enable_irq & omap_mbox_disable_irq, with the signature modified to take in the new mbox_chan handle instead of the OMAP specific omap_mbox handle. The first 2 will be removed when the OMAP mailbox driver is adapted to runtime_pm. The other exported API omap_mbox_request_channel will be removed once existing legacy users are converted to DT. Signed-off-by: Suman Anna <s-anna@ti.com> Cc: Ohad Ben-Cohen <ohad@wizery.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Merge branch 'mailbox-for-linus' of ↵Linus Torvalds2014-10-211-0/+38
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.linaro.org/landing-teams/working/fujitsu/integration Pull mailbox framework from Jassi Brar: "A framework for Mailbox controllers and clients have been cooking for more than a year now. Everybody in the CC list had been copied on patchset revisions and most of them have made sounds of approval, though just one concrete Reviewed-by. The patchset has also been in linux-next for a couple of weeks now and no conflict has been reported. The framework has the backing of at least 5 platforms, though I can't say if/when they upstream their drivers (some businesses have 'changed')" (Further acked-by by Arnd Bergmann and Suman Anna in the pull request thread) * 'mailbox-for-linus' of git://git.linaro.org/landing-teams/working/fujitsu/integration: dt: mailbox: add generic bindings doc: add documentation for mailbox framework mailbox: Introduce framework for mailbox mailbox: rename pl320-ipc specific mailbox.h
| * dt: mailbox: add generic bindingsJassi Brar2014-10-081-0/+38
| | | | | | | | Define generic bindings for the framework clients to request mailbox channels. Reviewed-by: Mark Brown <broonie@linaro.org> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
* Documentation: dt: add omap mailbox bindingsSuman Anna2014-09-111-0/+108
Add the device tree bindings document for OMAP2+ mailbox. Cc: Rob Herring <robh+dt@kernel.org> Cc: Pawel Moll <pawel.moll@arm.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Ian Campbell <ijc+devicetree@hellion.org.uk> Cc: Kumar Gala <galak@codeaurora.org> Signed-off-by: Suman Anna <s-anna@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
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