From mboxrd@z Thu Jan 1 00:00:00 1970 From: Thierry Reding Subject: [PATCH v3 01/12] dt-bindings: mailbox: Add Tegra HSP binding Date: Fri, 19 Aug 2016 19:32:22 +0200 Message-ID: <20160819173233.13260-2-thierry.reding@gmail.com> References: <20160819173233.13260-1-thierry.reding@gmail.com> Return-path: In-Reply-To: <20160819173233.13260-1-thierry.reding-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> Sender: linux-tegra-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: Thierry Reding Cc: Timo Alho , Peter De Schrijver , Sivaram Nair , Joseph Lo , linux-tegra-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org, devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org List-Id: linux-tegra@vger.kernel.org From: Joseph Lo 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 Acked-by: Stephen Warren Acked-by: Rob Herring Acked-by: Jon Hunter Signed-off-by: Thierry Reding --- .../bindings/mailbox/nvidia,tegra186-hsp.txt | 52 ++++++++++++++++++++++ include/dt-bindings/mailbox/tegra186-hsp.h | 24 ++++++++++ 2 files changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt create mode 100644 include/dt-bindings/mailbox/tegra186-hsp.h diff --git a/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt b/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt new file mode 100644 index 000000000000..b99d25fc2f26 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt @@ -0,0 +1,52 @@ +NVIDIA Tegra Hardware Synchronization Primitives (HSP) + +The HSP modules are used for the processors to share resources and communicate +together. It provides a set of hardware synchronization primitives for +interprocessor communication. So the interprocessor communication (IPC) +protocols can use hardware synchronization primitives, when operating between +two processors not in an SMP relationship. + +The features that HSP supported are shared mailboxes, shared semaphores, +arbitrated semaphores and doorbells. + +Required properties: +- name : Should be hsp +- compatible + Array of strings. + one of: + - "nvidia,tegra186-hsp" +- reg : Offset and length of the register set for the device. +- interrupt-names + Array of strings. + Contains a list of names for the interrupts described by the interrupt + property. May contain the following entries, in any order: + - "doorbell" + Users of this binding MUST look up entries in the interrupt property + by name, using this interrupt-names property to do so. +- interrupts + Array of interrupt specifiers. + Must contain one entry per entry in the interrupt-names property, + in a matching order. +- #mbox-cells : Should be 2. + +The mbox specifier of the "mboxes" property in the client node should +contain two data. The first one should be the HSP type and the second +one should be the ID that the client is going to use. Those information +can be found in the following file. + +- . + +Example: + +hsp_top0: hsp@3c00000 { + compatible = "nvidia,tegra186-hsp"; + reg = <0x0 0x03c00000 0x0 0xa0000>; + interrupts = ; + interrupt-names = "doorbell"; + #mbox-cells = <2>; +}; + +client { + ... + mboxes = <&hsp_top0 TEGRA_HSP_MBOX_TYPE_DB TEGRA_HSP_DB_MASTER_XXX>; +}; diff --git a/include/dt-bindings/mailbox/tegra186-hsp.h b/include/dt-bindings/mailbox/tegra186-hsp.h new file mode 100644 index 000000000000..f5d66e5f5f10 --- /dev/null +++ b/include/dt-bindings/mailbox/tegra186-hsp.h @@ -0,0 +1,24 @@ +/* + * This header provides constants for binding nvidia,tegra186-hsp. + */ + +#ifndef _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H +#define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H + +/* + * These define the type of mailbox that is to be used (doorbell, shared + * mailbox, shared semaphore or arbitrated semaphore). + */ +#define TEGRA_HSP_MBOX_TYPE_DB 0x0 +#define TEGRA_HSP_MBOX_TYPE_SM 0x1 +#define TEGRA_HSP_MBOX_TYPE_SS 0x2 +#define TEGRA_HSP_MBOX_TYPE_AS 0x3 + +/* + * These defines represent the bit associated with the given master ID in the + * doorbell registers. + */ +#define TEGRA_HSP_DB_MASTER_CCPLEX 17 +#define TEGRA_HSP_DB_MASTER_BPMP 19 + +#endif -- 2.9.0 From mboxrd@z Thu Jan 1 00:00:00 1970 From: thierry.reding@gmail.com (Thierry Reding) Date: Fri, 19 Aug 2016 19:32:22 +0200 Subject: [PATCH v3 01/12] dt-bindings: mailbox: Add Tegra HSP binding In-Reply-To: <20160819173233.13260-1-thierry.reding@gmail.com> References: <20160819173233.13260-1-thierry.reding@gmail.com> Message-ID: <20160819173233.13260-2-thierry.reding@gmail.com> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Joseph Lo 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 Acked-by: Stephen Warren Acked-by: Rob Herring Acked-by: Jon Hunter Signed-off-by: Thierry Reding --- .../bindings/mailbox/nvidia,tegra186-hsp.txt | 52 ++++++++++++++++++++++ include/dt-bindings/mailbox/tegra186-hsp.h | 24 ++++++++++ 2 files changed, 76 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt create mode 100644 include/dt-bindings/mailbox/tegra186-hsp.h diff --git a/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt b/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt new file mode 100644 index 000000000000..b99d25fc2f26 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/nvidia,tegra186-hsp.txt @@ -0,0 +1,52 @@ +NVIDIA Tegra Hardware Synchronization Primitives (HSP) + +The HSP modules are used for the processors to share resources and communicate +together. It provides a set of hardware synchronization primitives for +interprocessor communication. So the interprocessor communication (IPC) +protocols can use hardware synchronization primitives, when operating between +two processors not in an SMP relationship. + +The features that HSP supported are shared mailboxes, shared semaphores, +arbitrated semaphores and doorbells. + +Required properties: +- name : Should be hsp +- compatible + Array of strings. + one of: + - "nvidia,tegra186-hsp" +- reg : Offset and length of the register set for the device. +- interrupt-names + Array of strings. + Contains a list of names for the interrupts described by the interrupt + property. May contain the following entries, in any order: + - "doorbell" + Users of this binding MUST look up entries in the interrupt property + by name, using this interrupt-names property to do so. +- interrupts + Array of interrupt specifiers. + Must contain one entry per entry in the interrupt-names property, + in a matching order. +- #mbox-cells : Should be 2. + +The mbox specifier of the "mboxes" property in the client node should +contain two data. The first one should be the HSP type and the second +one should be the ID that the client is going to use. Those information +can be found in the following file. + +- . + +Example: + +hsp_top0: hsp at 3c00000 { + compatible = "nvidia,tegra186-hsp"; + reg = <0x0 0x03c00000 0x0 0xa0000>; + interrupts = ; + interrupt-names = "doorbell"; + #mbox-cells = <2>; +}; + +client { + ... + mboxes = <&hsp_top0 TEGRA_HSP_MBOX_TYPE_DB TEGRA_HSP_DB_MASTER_XXX>; +}; diff --git a/include/dt-bindings/mailbox/tegra186-hsp.h b/include/dt-bindings/mailbox/tegra186-hsp.h new file mode 100644 index 000000000000..f5d66e5f5f10 --- /dev/null +++ b/include/dt-bindings/mailbox/tegra186-hsp.h @@ -0,0 +1,24 @@ +/* + * This header provides constants for binding nvidia,tegra186-hsp. + */ + +#ifndef _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H +#define _DT_BINDINGS_MAILBOX_TEGRA186_HSP_H + +/* + * These define the type of mailbox that is to be used (doorbell, shared + * mailbox, shared semaphore or arbitrated semaphore). + */ +#define TEGRA_HSP_MBOX_TYPE_DB 0x0 +#define TEGRA_HSP_MBOX_TYPE_SM 0x1 +#define TEGRA_HSP_MBOX_TYPE_SS 0x2 +#define TEGRA_HSP_MBOX_TYPE_AS 0x3 + +/* + * These defines represent the bit associated with the given master ID in the + * doorbell registers. + */ +#define TEGRA_HSP_DB_MASTER_CCPLEX 17 +#define TEGRA_HSP_DB_MASTER_BPMP 19 + +#endif -- 2.9.0