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Message-ID: <20201204014236.1158-4-thunder.leizhen@huawei.com>
Date: Fri, 4 Dec 2020 09:42:36 +0800
From: Zhen Lei <thunder.leizhen@...wei.com>
To: Philipp Zabel <p.zabel@...gutronix.de>,
Wei Xu <xuwei5@...ilicon.com>,
"Rob Herring" <robh+dt@...nel.org>,
linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
devicetree <devicetree@...r.kernel.org>,
linux-kernel <linux-kernel@...r.kernel.org>
CC: Zhen Lei <thunder.leizhen@...wei.com>,
Zhangfei Gao <zhangfei.gao@...aro.org>,
Chen Feng <puck.chen@...ilicon.com>,
"Manivannan Sadhasivam" <manivannan.sadhasivam@...aro.org>
Subject: [PATCH v2 3/3] dt-bindings: reset: convert Hisilicon reset controller bindings to json-schema
Convert the Hisilicon reset controller binding to DT schema format using
json-schema.
Signed-off-by: Zhen Lei <thunder.leizhen@...wei.com>
---
.../bindings/reset/hisilicon,hi3660-reset.txt | 44 -------------
.../bindings/reset/hisilicon,hi3660-reset.yaml | 77 ++++++++++++++++++++++
2 files changed, 77 insertions(+), 44 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.txt
create mode 100644 Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.yaml
diff --git a/Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.txt b/Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.txt
deleted file mode 100644
index aefd26710f9e87d..000000000000000
--- a/Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.txt
+++ /dev/null
@@ -1,44 +0,0 @@
-Hisilicon System Reset Controller
-======================================
-
-Please also refer to reset.txt in this directory for common reset
-controller binding usage.
-
-The reset controller registers are part of the system-ctl block on
-hi3660 and hi3670 SoCs.
-
-Required properties:
-- compatible: should be one of the following:
- "hisilicon,hi3660-reset" for HI3660
- "hisilicon,hi3670-reset", "hisilicon,hi3660-reset" for HI3670
-- hisilicon,rst-syscon: phandle of the reset's syscon.
-- #reset-cells : Specifies the number of cells needed to encode a
- reset source. The type shall be a <u32> and the value shall be 2.
-
- Cell #1 : offset of the reset assert control
- register from the syscon register base
- offset + 4: deassert control register
- offset + 8: status control register
- Cell #2 : bit position of the reset in the reset control register
-
-Example:
- iomcu: iomcu@...7e000 {
- compatible = "hisilicon,hi3660-iomcu", "syscon";
- reg = <0x0 0xffd7e000 0x0 0x1000>;
- };
-
- iomcu_rst: iomcu_rst_controller {
- compatible = "hisilicon,hi3660-reset";
- hisilicon,rst-syscon = <&iomcu>;
- #reset-cells = <2>;
- };
-
-Specifying reset lines connected to IP modules
-==============================================
-example:
-
- i2c0: i2c@..... {
- ...
- resets = <&iomcu_rst 0x20 3>; /* offset: 0x20; bit: 3 */
- ...
- };
diff --git a/Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.yaml b/Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.yaml
new file mode 100644
index 000000000000000..9bf40952e5b7d28
--- /dev/null
+++ b/Documentation/devicetree/bindings/reset/hisilicon,hi3660-reset.yaml
@@ -0,0 +1,77 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/reset/hisilicon,hi3660-reset.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Hisilicon System Reset Controller
+
+maintainers:
+ - Wei Xu <xuwei5@...ilicon.com>
+
+description: |
+ Please also refer to reset.txt in this directory for common reset
+ controller binding usage.
+ The reset controller registers are part of the system-ctl block on
+ hi3660 and hi3670 SoCs.
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - const: hisilicon,hi3660-reset
+ - items:
+ - const: hisilicon,hi3670-reset
+ - const: hisilicon,hi3660-reset
+
+ hisilicon,rst-syscon:
+ description: phandle of the reset's syscon.
+ $ref: /schemas/types.yaml#/definitions/phandle
+
+ '#reset-cells':
+ description: |
+ Specifies the number of cells needed to encode a reset source.
+ Cell #1 : offset of the reset assert control register from the syscon
+ register base
+ offset + 4: deassert control register
+ offset + 8: status control register
+ Cell #2 : bit position of the reset in the reset control register
+ const: 2
+
+required:
+ - compatible
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/hi3660-clock.h>
+
+ iomcu: iomcu@...7e000 {
+ compatible = "hisilicon,hi3660-iomcu", "syscon";
+ reg = <0xffd7e000 0x1000>;
+ };
+
+ iomcu_rst: iomcu_rst_controller {
+ compatible = "hisilicon,hi3660-reset";
+ hisilicon,rst-syscon = <&iomcu>;
+ #reset-cells = <2>;
+ };
+
+ /* Specifying reset lines connected to IP modules */
+ i2c@...71000 {
+ compatible = "snps,designware-i2c";
+ reg = <0xffd71000 0x1000>;
+ interrupts = <GIC_SPI 118 IRQ_TYPE_LEVEL_HIGH>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ clock-frequency = <400000>;
+ clocks = <&crg_ctrl HI3660_CLK_GATE_I2C0>;
+ resets = <&iomcu_rst 0x20 3>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&i2c0_pmx_func &i2c0_cfg_func>;
+ status = "disabled";
+ };
+...
--
1.8.3
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