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Message-Id: <20231218-mbly-reset-v1-1-b4688b916213@bootlin.com>
Date: Mon, 18 Dec 2023 18:16:12 +0100
From: Théo Lebrun <theo.lebrun@...tlin.com>
To: Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
Gregory CLEMENT <gregory.clement@...tlin.com>,
Philipp Zabel <p.zabel@...gutronix.de>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>,
Thomas Bogendoerfer <tsbogend@...ha.franken.de>
Cc: linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
Tawfik Bayouk <tawfik.bayouk@...ileye.com>,
Théo Lebrun <theo.lebrun@...tlin.com>
Subject: [PATCH 1/4] dt-bindings: reset: mobileye,eyeq5-reset: add bindings
Add DT-Schema bindings for the EyeQ5 reset controller.
Signed-off-by: Théo Lebrun <theo.lebrun@...tlin.com>
---
.../bindings/reset/mobileye,eyeq5-reset.yaml | 69 +++++++++++++++++++
MAINTAINERS | 2 +
include/dt-bindings/reset/mobileye,eyeq5-reset.h | 80 ++++++++++++++++++++++
3 files changed, 151 insertions(+)
diff --git a/Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml b/Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml
new file mode 100644
index 000000000000..cab6a75ba59d
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml
@@ -0,0 +1,69 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/mobileye,eyeq5-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mobileye EyeQ5 reset controller
+
+description:
+ The EyeQ5 reset driver handles three reset domains. It is custom to this
+ platform, its registers live in a shared region called OLB.
+
+maintainers:
+ - Grégory Clement <gregory.clement@...tlin.com>
+ - Théo Lebrun <theo.lebrun@...tlin.com>
+ - Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>
+
+properties:
+ $nodename:
+ pattern: "^reset-controller$"
+ description:
+ We have no unique address, we rely on OLB.
+
+ compatible:
+ const: mobileye,eyeq5-reset
+
+ "#reset-cells":
+ const: 2
+ description:
+ The first cell is the domain (0 to 2 inclusive) and the second one is the
+ reset index inside that domain.
+
+ mobileye,olb:
+ $ref: /schemas/types.yaml#/definitions/phandle
+ description:
+ A phandle to the OLB syscon. This is a fallback to using the parent as
+ syscon node.
+
+required:
+ - compatible
+ - "#reset-cells"
+
+additionalProperties: false
+
+examples:
+ - |
+ olb@...000 {
+ compatible = "mobileye,eyeq5-olb", "syscon", "simple-mfd";
+ reg = <0xe00000 0x400>;
+ reg-io-width = <4>;
+
+ reset-controller {
+ compatible = "mobileye,eyeq5-reset";
+ #reset-cells = <2>;
+ };
+ };
+
+ - |
+ olb: olb@...000 {
+ compatible = "mobileye,eyeq5-olb", "syscon", "simple-mfd";
+ reg = <0xe00000 0x400>;
+ reg-io-width = <4>;
+ };
+
+ reset-controller {
+ compatible = "mobileye,eyeq5-reset";
+ #reset-cells = <2>;
+ mobileye,olb = <&olb>;
+ };
diff --git a/MAINTAINERS b/MAINTAINERS
index 4a7bd6b40d74..9096a940b425 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -14553,9 +14553,11 @@ M: Théo Lebrun <theo.lebrun@...tlin.com>
L: linux-mips@...r.kernel.org
S: Maintained
F: Documentation/devicetree/bindings/mips/mobileye.yaml
+F: Documentation/devicetree/bindings/reset/mobileye,eyeq5-reset.yaml
F: arch/mips/boot/dts/mobileye/
F: arch/mips/configs/generic/board-eyeq5.config
F: arch/mips/generic/board-epm5.its.S
+F: include/dt-bindings/reset/mobileye,eyeq5-reset.h
F: include/dt-bindings/soc/mobileye,eyeq5.h
MODULE SUPPORT
diff --git a/include/dt-bindings/reset/mobileye,eyeq5-reset.h b/include/dt-bindings/reset/mobileye,eyeq5-reset.h
new file mode 100644
index 000000000000..ce59fe5409ac
--- /dev/null
+++ b/include/dt-bindings/reset/mobileye,eyeq5-reset.h
@@ -0,0 +1,80 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) */
+/*
+ * Copyright (C) 2023 Mobileye Vision Technologies Ltd.
+ */
+
+#ifndef _DT_BINDINGS_RESET_MOBILEYE_EYEQ5_RESET_H
+#define _DT_BINDINGS_RESET_MOBILEYE_EYEQ5_RESET_H
+
+/* Domain 0 */
+
+/* 0..2 are reserved */
+#define EQ5R_D0_CAN0 3
+#define EQ5R_D0_CAN1 4
+#define EQ5R_D0_CAN2 5
+#define EQ5R_D0_SPI0 6
+#define EQ5R_D0_SPI1 7
+#define EQ5R_D0_SPI2 8
+#define EQ5R_D0_SPI3 9
+#define EQ5R_D0_UART0 10
+#define EQ5R_D0_UART1 11
+#define EQ5R_D0_UART2 12
+#define EQ5R_D0_I2C0 13
+#define EQ5R_D0_I2C1 14
+#define EQ5R_D0_I2C2 15
+#define EQ5R_D0_I2C3 16
+#define EQ5R_D0_I2C4 17
+#define EQ5R_D0_TIMER0 18
+#define EQ5R_D0_TIMER1 19
+#define EQ5R_D0_TIMER2 20
+#define EQ5R_D0_TIMER3 21
+#define EQ5R_D0_TIMER4 22
+#define EQ5R_D0_WD0 23
+#define EQ5R_D0_EXT0 24
+#define EQ5R_D0_EXT1 25
+#define EQ5R_D0_GPIO 26
+#define EQ5R_D0_WD1 27
+/* 28..31 are reserved */
+
+/* Domain 1 */
+
+/* Vector Microcode Processors */
+#define EQ5R_D1_VMP0 0
+#define EQ5R_D1_VMP1 1
+#define EQ5R_D1_VMP2 2
+#define EQ5R_D1_VMP3 3
+/* Programmable Macro Array */
+#define EQ5R_D1_PMA0 4
+#define EQ5R_D1_PMA1 5
+#define EQ5R_D1_PMAC0 6
+#define EQ5R_D1_PMAC1 7
+/* Multi-threaded Processing Clusters */
+#define EQ5R_D1_MPC0 8
+#define EQ5R_D1_MPC1 9
+
+/* Domain 2 */
+
+#define EQ5R_D2_PCIE0_CORE_SWRST_DIS 0
+#define EQ5R_D2_PCIE0_APB_SWRST_DIS 1
+#define EQ5R_D2_PCIE0_LINK_AXI_RST_DIS 2
+#define EQ5R_D2_PCIE0_LINK_MGMT_RST_DIS 3
+#define EQ5R_D2_PCIE0_LINK_HOT_RST_DIS 4
+#define EQ5R_D2_PCIE0_LINK_PIPE_RST_DIS 5
+
+#define EQ5R_D2_PCIE1_CORE_SWRST_DIS 6
+#define EQ5R_D2_PCIE1_APB_SWRST_DIS 7
+#define EQ5R_D2_PCIE1_LINK_AXI_RST_DIS 8
+#define EQ5R_D2_PCIE1_LINK_MGMT_RST_DIS 9
+#define EQ5R_D2_PCIE1_LINK_HOT_RST_DIS 10
+#define EQ5R_D2_PCIE1_LINK_PIPE_RST_DIS 11
+
+#define EQ5R_D2_MULTIPHY_SWRST_DIS 12
+#define EQ5R_D2_MULTIPHY_APB_RST_DIS 13
+/* 14 is refclk select, ie not a reset */
+#define EQ5R_D2_PCIE0_LINK_MGMT_RST 15
+#define EQ5R_D2_PCIE1_LINK_MGMT_RST 16
+#define EQ5R_D2_PCIE0_LINK_PM_RST 17
+#define EQ5R_D2_PCIE1_LINK_PM_RST 18
+/* 19..31 are unknown */
+
+#endif
--
2.43.0
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