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Message-Id: <20220329112902.252937-5-krzysztof.kozlowski@linaro.org>
Date: Tue, 29 Mar 2022 13:29:02 +0200
From: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To: linux-kernel@...r.kernel.org
Cc: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
Mark Brown <broonie@...nel.org>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzk+dt@...nel.org>,
linux-arm-msm@...r.kernel.org, linux-spi@...r.kernel.org,
devicetree@...r.kernel.org
Subject: [PATCH 4/4] spi: dt-bindings: qcom,spi-qup: convert to dtschema
Convert the Qualcomm Universal Peripheral (QUP) Serial Peripheral
Interface (SPI) bindings to DT Schema.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
.../devicetree/bindings/spi/qcom,spi-qup.txt | 103 ------------------
.../devicetree/bindings/spi/qcom,spi-qup.yaml | 82 ++++++++++++++
2 files changed, 82 insertions(+), 103 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
create mode 100644 Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml
diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt b/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
deleted file mode 100644
index 5c090771c016..000000000000
--- a/Documentation/devicetree/bindings/spi/qcom,spi-qup.txt
+++ /dev/null
@@ -1,103 +0,0 @@
-Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
-
-The QUP core is an AHB slave that provides a common data path (an output FIFO
-and an input FIFO) for serial peripheral interface (SPI) mini-core.
-
-SPI in master mode supports up to 50MHz, up to four chip selects, programmable
-data path from 4 bits to 32 bits and numerous protocol variants.
-
-Required properties:
-- compatible: Should contain:
- "qcom,spi-qup-v1.1.1" for 8660, 8960 and 8064.
- "qcom,spi-qup-v2.1.1" for 8974 and later
- "qcom,spi-qup-v2.2.1" for 8974 v2 and later.
-
-- reg: Should contain base register location and length
-- interrupts: Interrupt number used by this controller
-
-- clocks: Should contain the core clock and the AHB clock.
-- clock-names: Should be "core" for the core clock and "iface" for the
- AHB clock.
-
-- #address-cells: Number of cells required to define a chip select
- address on the SPI bus. Should be set to 1.
-- #size-cells: Should be zero.
-
-Optional properties:
-- spi-max-frequency: Specifies maximum SPI clock frequency,
- Units - Hz. Definition as per
- Documentation/devicetree/bindings/spi/spi-bus.txt
-- num-cs: total number of chipselects
-- cs-gpios: should specify GPIOs used for chipselects.
- The gpios will be referred to as reg = <index> in the SPI child
- nodes. If unspecified, a single SPI device without a chip
- select can be used.
-
-- dmas: Two DMA channel specifiers following the convention outlined
- in bindings/dma/dma.txt
-- dma-names: Names for the dma channels, if present. There must be at
- least one channel named "tx" for transmit and named "rx" for
- receive.
-
-SPI slave nodes must be children of the SPI master node and can contain
-properties described in Documentation/devicetree/bindings/spi/spi-bus.txt
-
-Example:
-
- spi_8: spi@...64000 { /* BLSP2 QUP2 */
-
- compatible = "qcom,spi-qup-v2";
- #address-cells = <1>;
- #size-cells = <0>;
- reg = <0xf9964000 0x1000>;
- interrupts = <0 102 0>;
- spi-max-frequency = <19200000>;
-
- clocks = <&gcc GCC_BLSP2_QUP2_SPI_APPS_CLK>, <&gcc GCC_BLSP2_AHB_CLK>;
- clock-names = "core", "iface";
-
- dmas = <&blsp1_bam 13>, <&blsp1_bam 12>;
- dma-names = "rx", "tx";
-
- pinctrl-names = "default";
- pinctrl-0 = <&spi8_default>;
-
- device@0 {
- compatible = "arm,pl022-dummy";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <0>; /* Chip select 0 */
- spi-max-frequency = <19200000>;
- spi-cpol;
- };
-
- device@1 {
- compatible = "arm,pl022-dummy";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <1>; /* Chip select 1 */
- spi-max-frequency = <9600000>;
- spi-cpha;
- };
-
- device@2 {
- compatible = "arm,pl022-dummy";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <2>; /* Chip select 2 */
- spi-max-frequency = <19200000>;
- spi-cpol;
- spi-cpha;
- };
-
- device@3 {
- compatible = "arm,pl022-dummy";
- #address-cells = <1>;
- #size-cells = <1>;
- reg = <3>; /* Chip select 3 */
- spi-max-frequency = <19200000>;
- spi-cpol;
- spi-cpha;
- spi-cs-high;
- };
- };
diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml b/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml
new file mode 100644
index 000000000000..aa5756f7ba85
--- /dev/null
+++ b/Documentation/devicetree/bindings/spi/qcom,spi-qup.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/spi/qcom,spi-qup.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Universal Peripheral (QUP) Serial Peripheral Interface (SPI)
+
+maintainers:
+ - Andy Gross <agross@...nel.org>
+ - Bjorn Andersson <bjorn.andersson@...aro.org>
+ - Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
+
+description:
+ The QUP core is an AHB slave that provides a common data path (an output FIFO
+ and an input FIFO) for serial peripheral interface (SPI) mini-core.
+
+ SPI in master mode supports up to 50MHz, up to four chip selects,
+ programmable data path from 4 bits to 32 bits and numerous protocol variants.
+
+allOf:
+ - $ref: /spi/spi-controller.yaml#
+
+properties:
+ compatible:
+ enum:
+ - qcom,spi-qup-v1.1.1 # for 8660, 8960 and 8064
+ - qcom,spi-qup-v2.1.1 # for 8974 and later
+ - qcom,spi-qup-v2.2.1 # for 8974 v2 and later
+
+ clocks:
+ maxItems: 2
+
+ clock-names:
+ items:
+ - const: core
+ - const: iface
+
+ dmas:
+ maxItems: 2
+
+ dma-names:
+ items:
+ - const: tx
+ - const: rx
+
+ interrupts:
+ maxItems: 1
+
+ reg:
+ maxItems: 1
+
+required:
+ - compatible
+ - clocks
+ - clock-names
+ - interrupts
+ - reg
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/qcom,gcc-msm8996.h>
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+ spi@...5000 {
+ compatible = "qcom,spi-qup-v2.2.1";
+ reg = <0x07575000 0x600>;
+ interrupts = <GIC_SPI 95 IRQ_TYPE_LEVEL_HIGH>;
+ clocks = <&gcc GCC_BLSP1_QUP1_SPI_APPS_CLK>,
+ <&gcc GCC_BLSP1_AHB_CLK>;
+ clock-names = "core",
+ "iface";
+ pinctrl-names = "default", "sleep";
+ pinctrl-0 = <&blsp1_spi1_default>;
+ pinctrl-1 = <&blsp1_spi1_sleep>;
+ dmas = <&blsp1_dma 12>, <&blsp1_dma 13>;
+ dma-names = "tx", "rx";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ };
--
2.32.0
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