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Message-Id: <20200826085450.508556-1-ikjn@chromium.org>
Date: Wed, 26 Aug 2020 16:54:50 +0800
From: Ikjoon Jang <ikjn@...omium.org>
To: Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Matthias Brugger <matthias.bgg@...il.com>,
linux-spi@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org
Cc: Bayi Cheng <bayi.cheng@...iatek.com>,
Chuanhong Guo <gch981213@...il.com>,
linux-arm-kernel@...ts.infradead.org,
linux-mediatek@...ts.infradead.org, Ikjoon Jang <ikjn@...omium.org>
Subject: [PATCH v2] dt-bindings: spi: Convert spi-mtk-nor to json-schema
Convert Mediatek ARM SOC's serial NOR flash controller binding
to json-schema format.
Signed-off-by: Ikjoon Jang <ikjn@...omium.org>
---
v2: remove unnecessary quotes, set interrupts as required,
add unevaluatedProperties:false
---
.../bindings/spi/mediatek,spi-mtk-nor.yaml | 85 +++++++++++++++++++
.../devicetree/bindings/spi/spi-mtk-nor.txt | 47 ----------
2 files changed, 85 insertions(+), 47 deletions(-)
create mode 100644 Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml
delete mode 100644 Documentation/devicetree/bindings/spi/spi-mtk-nor.txt
diff --git a/Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml b/Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml
new file mode 100644
index 000000000000..42c9205ac991
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/mediatek,spi-mtk-nor.yaml
@@ -0,0 +1,85 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/mediatek,spi-mtk-nor.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Serial NOR flash controller for MediaTek ARM SoCs
+
+maintainers:
+ - Bayi Cheng <bayi.cheng@...iatek.com>
+ - Chuanhong Guo <gch981213@...il.com>
+
+description: |
+ This spi controller support single, dual, or quad mode transfer for
+ SPI NOR flash. There should be only one spi slave device following
+ generic spi bindings. It's not recommended to use this controller
+ for devices other than SPI NOR flash due to limited transfer
+ capability of this controller.
+
+allOf:
+ - $ref: /spi/spi-controller.yaml#
+
+properties:
+ compatible:
+ oneOf:
+ - items:
+ - enum:
+ - mediatek,mt2701-nor
+ - mediatek,mt2712-nor
+ - mediatek,mt7622-nor
+ - mediatek,mt7623-nor
+ - mediatek,mt7629-nor
+ - enum:
+ - mediatek,mt8173-nor
+ - items:
+ - const: mediatek,mt8173-nor
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clocks:
+ items:
+ - description: clock used for spi bus
+ - description: clock used for controller
+
+ clock-names:
+ items:
+ - const: spi
+ - const: sf
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clocks
+ - clock-names
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/mt8173-clk.h>
+
+ soc {
+ #address-cells = <2>;
+ #size-cells = <2>;
+
+ nor_flash: spi@...0d000 {
+ compatible = "mediatek,mt8173-nor";
+ reg = <0 0x1100d000 0 0xe0>;
+ interrupts = <&spi_flash_irq>;
+ clocks = <&pericfg CLK_PERI_SPI>, <&topckgen CLK_TOP_SPINFI_IFR_SEL>;
+ clock-names = "spi", "sf";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ flash@0 {
+ compatible = "jedec,spi-nor";
+ reg = <0>;
+ };
+ };
+ };
+
diff --git a/Documentation/devicetree/bindings/spi/spi-mtk-nor.txt b/Documentation/devicetree/bindings/spi/spi-mtk-nor.txt
deleted file mode 100644
index 984ae7fd4f94..000000000000
--- a/Documentation/devicetree/bindings/spi/spi-mtk-nor.txt
+++ /dev/null
@@ -1,47 +0,0 @@
-* Serial NOR flash controller for MediaTek ARM SoCs
-
-Required properties:
-- compatible: For mt8173, compatible should be "mediatek,mt8173-nor",
- and it's the fallback compatible for other Soc.
- For every other SoC, should contain both the SoC-specific compatible
- string and "mediatek,mt8173-nor".
- The possible values are:
- "mediatek,mt2701-nor", "mediatek,mt8173-nor"
- "mediatek,mt2712-nor", "mediatek,mt8173-nor"
- "mediatek,mt7622-nor", "mediatek,mt8173-nor"
- "mediatek,mt7623-nor", "mediatek,mt8173-nor"
- "mediatek,mt7629-nor", "mediatek,mt8173-nor"
- "mediatek,mt8173-nor"
-- reg: physical base address and length of the controller's register
-- interrupts: Interrupt number used by the controller.
-- clocks: the phandle of the clocks needed by the nor controller
-- clock-names: the names of the clocks
- the clocks should be named "spi" and "sf". "spi" is used for spi bus,
- and "sf" is used for controller, these are the clocks witch
- hardware needs to enabling nor flash and nor flash controller.
- See Documentation/devicetree/bindings/clock/clock-bindings.txt for details.
-- #address-cells: should be <1>
-- #size-cells: should be <0>
-
-There should be only one spi slave device following generic spi bindings.
-It's not recommended to use this controller for devices other than SPI NOR
-flash due to limited transfer capability of this controller.
-
-Example:
-
-nor_flash: spi@...0d000 {
- compatible = "mediatek,mt8173-nor";
- reg = <0 0x1100d000 0 0xe0>;
- interrupts = <&spi_flash_irq>;
- clocks = <&pericfg CLK_PERI_SPI>,
- <&topckgen CLK_TOP_SPINFI_IFR_SEL>;
- clock-names = "spi", "sf";
- #address-cells = <1>;
- #size-cells = <0>;
-
- flash@0 {
- compatible = "jedec,spi-nor";
- reg = <0>;
- };
-};
-
--
2.28.0.297.g1956fa8f8d-goog
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