AcoSail/kernel_optimize_test
8
0
Fork 0
forked from luck/tmp_suning_uos_patched
Code Pull Requests Activity

dt-bindings: mailbox: Add devicetree binding for Qcom IPCC

Browse Source 
Add devicetree YAML binding for Qualcomm Inter-Processor Communication
Controller (IPCC) block.

Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Signed-off-by: Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
This commit is contained in:
Manivannan Sadhasivam 2020-05-20 14:18:52 +05:30 committed by Jassi Brar
parent 445aeeb569
commit a01822e94e
2 changed files with 113 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

80
Documentation/devicetree/bindings/mailbox/qcom-ipcc.yaml Normal file
View File

@ -0,0 +1,80 @@
# SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/mailbox/qcom-ipcc.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Qualcomm Technologies, Inc. Inter-Processor Communication Controller
maintainers:
- Manivannan Sadhasivam <manivannan.sadhasivam@linaro.org>
description:
The Inter-Processor Communication Controller (IPCC) is a centralized hardware
to route interrupts across various subsystems. It involves a three-level
addressing scheme called protocol, client and signal. For example, consider an
entity on the Application Processor Subsystem (APSS) that wants to listen to
Modem's interrupts via Shared Memory Point to Point (SMP2P) interface. In such
a case, the client would be Modem (client-id is 2) and the signal would be
SMP2P (signal-id is 2). The SMP2P itself falls under the Multiprocessor (MPROC)
protocol (protocol-id is 0). Refer include/dt-bindings/mailbox/qcom-ipcc.h
for the list of such IDs.
properties:
compatible:
items:
- enum:
- qcom,sm8250-ipcc
- const: qcom,ipcc
reg:
maxItems: 1
interrupts:
maxItems: 1
interrupt-controller: true
"#interrupt-cells":
const: 3
description:
The first cell is the client-id, the second cell is the signal-id and the
third cell is the interrupt type.
"#mbox-cells":
const: 2
description:
The first cell is the client-id, and the second cell is the signal-id.
required:
- compatible
- reg
- interrupts
- interrupt-controller
- "#interrupt-cells"
- "#mbox-cells"
additionalProperties: false
examples:
- |
#include <dt-bindings/interrupt-controller/arm-gic.h>
#include <dt-bindings/mailbox/qcom-ipcc.h>
mailbox@408000 {
compatible = "qcom,sm8250-ipcc", "qcom,ipcc";
reg = <0x408000 0x1000>;
interrupts = <GIC_SPI 229 IRQ_TYPE_LEVEL_HIGH>;
interrupt-controller;
#interrupt-cells = <3>;
#mbox-cells = <2>;
};
smp2p-modem {
compatible = "qcom,smp2p";
interrupts-extended = <&ipcc_mproc IPCC_CLIENT_MPSS
IPCC_MPROC_SIGNAL_SMP2P IRQ_TYPE_EDGE_RISING>;
mboxes = <&ipcc_mproc IPCC_CLIENT_MPSS IPCC_MPROC_SIGNAL_SMP2P>;
/* Other SMP2P fields */
};

33
include/dt-bindings/mailbox/qcom-ipcc.h Normal file
View File

@ -0,0 +1,33 @@
/* SPDX-License-Identifier: GPL-2.0 OR BSD-2-Clause */
/*
* Copyright (c) 2018-2020, The Linux Foundation. All rights reserved.
*/
#ifndef __DT_BINDINGS_MAILBOX_IPCC_H
#define __DT_BINDINGS_MAILBOX_IPCC_H
/* Signal IDs for MPROC protocol */
#define IPCC_MPROC_SIGNAL_GLINK_QMP 0
#define IPCC_MPROC_SIGNAL_SMP2P 2
#define IPCC_MPROC_SIGNAL_PING 3
/* Client IDs */
#define IPCC_CLIENT_AOP 0
#define IPCC_CLIENT_TZ 1
#define IPCC_CLIENT_MPSS 2
#define IPCC_CLIENT_LPASS 3
#define IPCC_CLIENT_SLPI 4
#define IPCC_CLIENT_SDC 5
#define IPCC_CLIENT_CDSP 6
#define IPCC_CLIENT_NPU 7
#define IPCC_CLIENT_APSS 8
#define IPCC_CLIENT_GPU 9
#define IPCC_CLIENT_CVP 10
#define IPCC_CLIENT_CAM 11
#define IPCC_CLIENT_VPU 12
#define IPCC_CLIENT_PCIE0 13
#define IPCC_CLIENT_PCIE1 14
#define IPCC_CLIENT_PCIE2 15
#define IPCC_CLIENT_SPSS 16
#endif