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Message-Id: <20230213192349.17101-1-avolmat@me.com>
Date: Mon, 13 Feb 2023 20:23:48 +0100
From: Alain Volmat <avolmat@...com>
To: Mark Brown <broonie@...nel.org>, Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Patrice Chotard <patrice.chotard@...s.st.com>
Cc: Alain Volmat <avolmat@...com>, linux-spi@...r.kernel.org,
devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
linux-arm-kernel@...ts.infradead.org
Subject: [PATCH v2] dt-bindings: spi: spi-st-ssc: convert to DT schema
Convert spi-st-ssc.txt into st,ssc-spi.yaml for the
ST Microelectronics SSC SPI driver.
Signed-off-by: Alain Volmat <avolmat@...com>
---
v2: correct subject & commit log
drop quotes around spi-controller.yaml
remove extra spaces within example
.../devicetree/bindings/spi/spi-st-ssc.txt | 40 ------------
.../devicetree/bindings/spi/st,ssc-spi.yaml | 61 +++++++++++++++++++
MAINTAINERS | 1 +
3 files changed, 62 insertions(+), 40 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/spi/spi-st-ssc.txt
create mode 100644 Documentation/devicetree/bindings/spi/st,ssc-spi.yaml
diff --git a/Documentation/devicetree/bindings/spi/spi-st-ssc.txt b/Documentation/devicetree/bindings/spi/spi-st-ssc.txt
deleted file mode 100644
index 1bdc4709e474..000000000000
--- a/Documentation/devicetree/bindings/spi/spi-st-ssc.txt
+++ /dev/null
@@ -1,40 +0,0 @@
-STMicroelectronics SSC (SPI) Controller
----------------------------------------
-
-Required properties:
-- compatible : "st,comms-ssc4-spi"
-- reg : Offset and length of the device's register set
-- interrupts : The interrupt specifier
-- clock-names : Must contain "ssc"
-- clocks : Must contain an entry for each name in clock-names
- See ../clk/*
-- pinctrl-names : Uses "default", can use "sleep" if provided
- See ../pinctrl/pinctrl-bindings.txt
-
-Optional properties:
-- cs-gpios : List of GPIO chip selects
- See ../spi/spi-bus.txt
-
-Child nodes represent devices on the SPI bus
- See ../spi/spi-bus.txt
-
-Example:
- spi@...0000 {
- compatible = "st,comms-ssc4-spi";
- reg = <0x9840000 0x110>;
- interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
- clocks = <&clk_s_c0_flexgen CLK_EXT2F_A9>;
- clock-names = "ssc";
- pinctrl-0 = <&pinctrl_spi0_default>;
- pinctrl-names = "default";
- cs-gpios = <&pio17 5 0>;
- #address-cells = <1>;
- #size-cells = <0>;
-
- st95hf@0{
- compatible = "st,st95hf";
- reg = <0>;
- spi-max-frequency = <1000000>;
- interrupts = <2 IRQ_TYPE_EDGE_FALLING>;
- };
- };
diff --git a/Documentation/devicetree/bindings/spi/st,ssc-spi.yaml b/Documentation/devicetree/bindings/spi/st,ssc-spi.yaml
new file mode 100644
index 000000000000..6a77cd3f5d6e
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/st,ssc-spi.yaml
@@ -0,0 +1,61 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/st,ssc-spi.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: STMicroelectronics SSC SPI Controller
+
+description: |
+ The STMicroelectronics SSC SPI controller can be found on STi platforms
+ and it used to communicate with external devices using the
+ Serial Peripheral Interface.
+
+maintainers:
+ - Patrice Chotard <patrice.chotard@...s.st.com>
+
+allOf:
+ - $ref: spi-controller.yaml#
+
+properties:
+ compatible:
+ const: st,comms-ssc4-spi
+
+ reg:
+ maxItems: 1
+
+ clocks:
+ maxItems: 1
+
+ clock-names:
+ const: ssc
+
+ interrupts:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - clocks
+ - clock-names
+ - interrupts
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/clock/stih407-clks.h>
+ spi@...0000 {
+ compatible = "st,comms-ssc4-spi";
+ reg = <0x9840000 0x110>;
+ interrupts = <GIC_SPI 112 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&clk_s_c0_flexgen CLK_EXT2F_A9>;
+ clock-names = "ssc";
+ pinctrl-0 = <&pinctrl_spi0_default>;
+ pinctrl-names = "default";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index 2e32eb8d44f5..0fc3e4c6c1e5 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2926,6 +2926,7 @@ L: linux-arm-kernel@...ts.infradead.org (moderated for non-subscribers)
S: Maintained
W: http://www.stlinux.com
F: Documentation/devicetree/bindings/i2c/st,sti-i2c.yaml
+F: Documentation/devicetree/bindings/spi/st,ssc-spi.yaml
F: arch/arm/boot/dts/sti*
F: arch/arm/mach-sti/
F: drivers/ata/ahci_st.c
--
2.34.1
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