From: Sergiu Moga <sergiu.moga@microchip.com>
To: <lee@kernel.org>, <robh+dt@kernel.org>,
<krzysztof.kozlowski+dt@linaro.org>,
<nicolas.ferre@microchip.com>, <alexandre.belloni@bootlin.com>,
<claudiu.beznea@microchip.com>, <richard.genoud@gmail.com>,
<radu_nicolae.pirea@upb.ro>, <gregkh@linuxfoundation.org>,
<broonie@kernel.org>, <mturquette@baylibre.com>,
<sboyd@kernel.org>, <jirislaby@kernel.org>, <admin@hifiphile.com>,
<sergiu.moga@microchip.com>, <kavyasree.kotagiri@microchip.com>,
<tudor.ambarus@microchip.com>
Cc: <devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>, <linux-spi@vger.kernel.org>,
<linux-serial@vger.kernel.org>, <linux-clk@vger.kernel.org>
Subject: [PATCH v2 05/13] dt-bindings: serial: atmel,at91-usart: convert to json-schema
Date: Tue, 6 Sep 2022 16:55:04 +0300 [thread overview]
Message-ID: <20220906135511.144725-6-sergiu.moga@microchip.com> (raw)
In-Reply-To: <20220906135511.144725-1-sergiu.moga@microchip.com>
Convert at91 USART DT Binding for Atmel/Microchip SoCs to
json-schema format. Furthermore, move this binding to the
serial directory, since binding directories match hardware,
unlike the driver subsystems which match Linux convention.
Signed-off-by: Sergiu Moga <sergiu.moga@microchip.com>
---
v1 -> v2:
- only do what the commit says, split the addition of other compatibles and
properties in other patches
- remove unnecessary "|"'s
- mention header in `atmel,usart-mode`'s description
- place `if:` under `allOf:`
- respect order of spi0's DT properties: compatible, then reg then the reset of properties
.../devicetree/bindings/mfd/atmel-usart.txt | 98 ----------
.../bindings/serial/atmel,at91-usart.yaml | 183 ++++++++++++++++++
2 files changed, 183 insertions(+), 98 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/mfd/atmel-usart.txt
create mode 100644 Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml
diff --git a/Documentation/devicetree/bindings/mfd/atmel-usart.txt b/Documentation/devicetree/bindings/mfd/atmel-usart.txt
deleted file mode 100644
index a09133066aff..000000000000
--- a/Documentation/devicetree/bindings/mfd/atmel-usart.txt
+++ /dev/null
@@ -1,98 +0,0 @@
-* Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART)
-
-Required properties for USART:
-- compatible: Should be one of the following:
- - "atmel,at91rm9200-usart"
- - "atmel,at91sam9260-usart"
- - "microchip,sam9x60-usart"
- - "atmel,at91rm9200-dbgu", "atmel,at91rm9200-usart"
- - "atmel,at91sam9260-dbgu", "atmel,at91sam9260-usart"
- - "microchip,sam9x60-dbgu", "microchip,sam9x60-usart"
-- reg: Should contain registers location and length
-- interrupts: Should contain interrupt
-- clock-names: tuple listing input clock names.
- Required elements: "usart"
-- clocks: phandles to input clocks.
-
-Required properties for USART in SPI mode:
-- #size-cells : Must be <0>
-- #address-cells : Must be <1>
-- cs-gpios: chipselects (internal cs not supported)
-- atmel,usart-mode : Must be <AT91_USART_MODE_SPI> (found in dt-bindings/mfd/at91-usart.h)
-
-Optional properties in serial and SPI mode:
-- dma bindings for dma transfer:
- - dmas: DMA specifier, consisting of a phandle to DMA controller node,
- memory peripheral interface and USART DMA channel ID, FIFO configuration.
- The order of DMA channels is fixed. The first DMA channel must be TX
- associated channel and the second one must be RX associated channel.
- Refer to dma.txt and atmel-dma.txt for details.
- - dma-names: "tx" for TX channel.
- "rx" for RX channel.
- The order of dma-names is also fixed. The first name must be "tx"
- and the second one must be "rx" as in the examples below.
-
-Optional properties in serial mode:
-- atmel,use-dma-rx: use of PDC or DMA for receiving data
-- atmel,use-dma-tx: use of PDC or DMA for transmitting data
-- {rts,cts,dtr,dsr,rng,dcd}-gpios: specify a GPIO for RTS/CTS/DTR/DSR/RI/DCD line respectively.
- It will use specified PIO instead of the peripheral function pin for the USART feature.
- If unsure, don't specify this property.
-- atmel,fifo-size: maximum number of data the RX and TX FIFOs can store for FIFO
- capable USARTs.
-- rs485-rts-delay, rs485-rx-during-tx, linux,rs485-enabled-at-boot-time: see rs485.txt
-
-<chip> compatible description:
-- at91rm9200: legacy USART support
-- at91sam9260: generic USART implementation for SAM9 SoCs
-
-Example:
-- use PDC:
- usart0: serial@fff8c000 {
- compatible = "atmel,at91sam9260-usart";
- reg = <0xfff8c000 0x4000>;
- interrupts = <7>;
- clocks = <&usart0_clk>;
- clock-names = "usart";
- atmel,use-dma-rx;
- atmel,use-dma-tx;
- rts-gpios = <&pioD 15 GPIO_ACTIVE_LOW>;
- cts-gpios = <&pioD 16 GPIO_ACTIVE_LOW>;
- dtr-gpios = <&pioD 17 GPIO_ACTIVE_LOW>;
- dsr-gpios = <&pioD 18 GPIO_ACTIVE_LOW>;
- dcd-gpios = <&pioD 20 GPIO_ACTIVE_LOW>;
- rng-gpios = <&pioD 19 GPIO_ACTIVE_LOW>;
- };
-
-- use DMA:
- usart0: serial@f001c000 {
- compatible = "atmel,at91sam9260-usart";
- reg = <0xf001c000 0x100>;
- interrupts = <12 4 5>;
- clocks = <&usart0_clk>;
- clock-names = "usart";
- atmel,use-dma-rx;
- atmel,use-dma-tx;
- dmas = <&dma0 2 0x3>,
- <&dma0 2 0x204>;
- dma-names = "tx", "rx";
- atmel,fifo-size = <32>;
- };
-
-- SPI mode:
- #include <dt-bindings/mfd/at91-usart.h>
-
- spi0: spi@f001c000 {
- #address-cells = <1>;
- #size-cells = <0>;
- compatible = "atmel,at91rm9200-usart", "atmel,at91sam9260-usart";
- atmel,usart-mode = <AT91_USART_MODE_SPI>;
- reg = <0xf001c000 0x100>;
- interrupts = <12 IRQ_TYPE_LEVEL_HIGH 5>;
- clocks = <&usart0_clk>;
- clock-names = "usart";
- dmas = <&dma0 2 AT91_DMA_CFG_PER_ID(3)>,
- <&dma0 2 (AT91_DMA_CFG_PER_ID(4) | AT91_DMA_CFG_FIFOCFG_ASAP)>;
- dma-names = "tx", "rx";
- cs-gpios = <&pioB 3 0>;
- };
diff --git a/Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml b/Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml
new file mode 100644
index 000000000000..b25535b7a4d2
--- /dev/null
+++ b/Documentation/devicetree/bindings/serial/atmel,at91-usart.yaml
@@ -0,0 +1,183 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+# Copyright (C) 2022 Microchip Technology, Inc. and its subsidiaries
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/serial/atmel,at91-usart.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Atmel Universal Synchronous Asynchronous Receiver/Transmitter (USART)
+
+maintainers:
+ - Richard Genoud <richard.genoud@gmail.com>
+
+properties:
+ compatible:
+ oneOf:
+ - enum:
+ - atmel,at91rm9200-usart
+ - atmel,at91sam9260-usart
+ - microchip,sam9x60-usart
+ - items:
+ - const: atmel,at91rm9200-dbgu
+ - const: atmel,at91rm9200-usart
+ - items:
+ - const: atmel,at91sam9260-dbgu
+ - const: atmel,at91sam9260-usart
+ - items:
+ - const: microchip,sam9x60-dbgu
+ - const: microchip,sam9x60-usart
+
+ reg:
+ maxItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ clock-names:
+ const: usart
+
+ clocks:
+ maxItems: 1
+
+ dmas:
+ items:
+ - description: TX DMA Channel
+ - description: RX DMA Channel
+
+ dma-names:
+ items:
+ - const: tx
+ - const: rx
+
+ atmel,usart-mode:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Must be either <AT91_USART_MODE_SPI> for SPI or
+ <AT91_USART_MODE_SERIAL> for USART (found in dt-bindings/mfd/at91-usart.h).
+ enum: [ 0, 1 ]
+
+required:
+ - compatible
+ - reg
+ - interrupts
+ - clock-names
+ - clocks
+
+allOf:
+ - if:
+ properties:
+ $nodename:
+ pattern: "^serial@[0-9a-f]+$"
+ then:
+ allOf:
+ - $ref: /schemas/serial/serial.yaml#
+ - $ref: /schemas/serial/rs485.yaml#
+
+ properties:
+ atmel,use-dma-rx:
+ type: boolean
+ description: use of PDC or DMA for receiving data
+
+ atmel,use-dma-tx:
+ type: boolean
+ description: use of PDC or DMA for transmitting data
+
+ atmel,fifo-size:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ description:
+ Maximum number of data the RX and TX FIFOs can store for FIFO
+ capable USARTS.
+ enum: [ 16, 32 ]
+
+ else:
+ if:
+ properties:
+ $nodename:
+ pattern: "^spi@[0-9a-f]+$"
+ then:
+ allOf:
+ - $ref: /schemas/spi/spi-controller.yaml#
+
+ properties:
+ atmel,usart-mode:
+ const: 1
+
+ "#size-cells":
+ const: 0
+
+ "#address-cells":
+ const: 1
+
+ required:
+ - atmel,usart-mode
+ - "#size-cells"
+ - "#address-cells"
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/mfd/at91-usart.h>
+ #include <dt-bindings/dma/at91.h>
+
+ /* use PDC */
+ usart0: serial@fff8c000 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xfff8c000 0x4000>;
+ interrupts = <7>;
+ clocks = <&usart0_clk>;
+ clock-names = "usart";
+ atmel,use-dma-rx;
+ atmel,use-dma-tx;
+ rts-gpios = <&pioD 15 GPIO_ACTIVE_LOW>;
+ cts-gpios = <&pioD 16 GPIO_ACTIVE_LOW>;
+ dtr-gpios = <&pioD 17 GPIO_ACTIVE_LOW>;
+ dsr-gpios = <&pioD 18 GPIO_ACTIVE_LOW>;
+ dcd-gpios = <&pioD 20 GPIO_ACTIVE_LOW>;
+ rng-gpios = <&pioD 19 GPIO_ACTIVE_LOW>;
+ };
+
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/mfd/at91-usart.h>
+ #include <dt-bindings/dma/at91.h>
+
+ /* use DMA */
+ usart1: serial@f001c000 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xf001c000 0x100>;
+ interrupts = <12 IRQ_TYPE_LEVEL_HIGH 5>;
+ clocks = <&usart0_clk>;
+ clock-names = "usart";
+ atmel,use-dma-rx;
+ atmel,use-dma-tx;
+ dmas = <&dma0 2 AT91_DMA_CFG_PER_ID(3)>,
+ <&dma0 2 (AT91_DMA_CFG_PER_ID(4) | AT91_DMA_CFG_FIFOCFG_ASAP)>;
+ dma-names = "tx", "rx";
+ atmel,fifo-size = <32>;
+ };
+
+ - |
+ #include <dt-bindings/gpio/gpio.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/mfd/at91-usart.h>
+ #include <dt-bindings/dma/at91.h>
+
+ /* SPI mode */
+ spi0: spi@f001c000 {
+ compatible = "atmel,at91sam9260-usart";
+ reg = <0xf001c000 0x100>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ atmel,usart-mode = <AT91_USART_MODE_SPI>;
+ interrupts = <12 IRQ_TYPE_LEVEL_HIGH 5>;
+ clocks = <&usart0_clk>;
+ clock-names = "usart";
+ dmas = <&dma0 2 AT91_DMA_CFG_PER_ID(3)>,
+ <&dma0 2 (AT91_DMA_CFG_PER_ID(4) | AT91_DMA_CFG_FIFOCFG_ASAP)>;
+ dma-names = "tx", "rx";
+ cs-gpios = <&pioB 3 GPIO_ACTIVE_HIGH>;
+ };
--
2.25.1
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next prev parent reply other threads:[~2022-09-06 14:47 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-06 13:54 [PATCH v2 00/13] Make atmel serial driver aware of GCLK Sergiu Moga
2022-09-06 13:55 ` [PATCH v2 01/13] spi: dt-bindings: atmel,at91rm9200-spi: Add DMA related properties Sergiu Moga
2022-09-06 15:12 ` Mark Brown
2022-09-06 21:41 ` Rob Herring
2022-09-07 7:54 ` Sergiu.Moga
2022-09-08 12:23 ` Krzysztof Kozlowski
2022-09-06 13:55 ` [PATCH v2 02/13] ARM: dts: at91: sama7g5: Swap rx and tx for spi11 Sergiu Moga
2022-09-06 13:55 ` [PATCH v2 03/13] dt-bindings: mfd: atmel,sama5d2-flexcom: Add SPI child node ref binding Sergiu Moga
2022-09-08 12:23 ` Krzysztof Kozlowski
2022-09-06 13:55 ` [PATCH v2 04/13] ARM: dts: at91: sam9x60ek: Add DBGU compatibles to uart1 Sergiu Moga
2022-09-06 13:55 ` Sergiu Moga [this message]
2022-09-08 12:29 ` [PATCH v2 05/13] dt-bindings: serial: atmel,at91-usart: convert to json-schema Krzysztof Kozlowski
2022-09-08 15:06 ` Sergiu.Moga
2022-09-08 15:10 ` Krzysztof Kozlowski
2022-09-08 15:27 ` Sergiu.Moga
2022-09-08 16:05 ` Krzysztof Kozlowski
2022-09-06 13:55 ` [PATCH v2 06/13] dt-bindings: serial: atmel,at91-usart: Add SAM9260 compatibles to SAM9x60 Sergiu Moga
2022-09-08 12:30 ` Krzysztof Kozlowski
2022-09-08 15:15 ` Sergiu.Moga
2022-09-09 1:36 ` Rob Herring
2022-09-12 7:45 ` Sergiu.Moga
2022-09-12 10:44 ` Krzysztof Kozlowski
2022-09-12 13:09 ` Sergiu.Moga
2022-09-13 8:58 ` Krzysztof Kozlowski
2022-09-13 9:19 ` Sergiu.Moga
2022-09-13 9:30 ` Krzysztof Kozlowski
2022-09-13 9:35 ` Sergiu.Moga
2022-09-06 13:55 ` [PATCH v2 07/13] dt-bindings: mfd: atmel,sama5d2-flexcom: Add USART child node ref binding Sergiu Moga
2022-09-08 12:33 ` Krzysztof Kozlowski
2022-09-06 13:55 ` [PATCH v2 08/13] tty: serial: atmel: Define GCLK as USART baudrate source clock Sergiu Moga
2022-09-07 9:21 ` Ilpo Järvinen
2022-09-07 9:37 ` Sergiu.Moga
2022-09-06 13:55 ` [PATCH v2 09/13] tty: serial: atmel: Define BRSRCCK bitmask of UART IP's Mode Register Sergiu Moga
2022-09-07 9:24 ` Ilpo Järvinen
2022-09-06 13:55 ` [PATCH v2 10/13] tty: serial: atmel: Only divide Clock Divisor if the IP is USART Sergiu Moga
2022-09-07 9:23 ` Ilpo Järvinen
2022-09-07 9:34 ` Sergiu.Moga
2022-09-06 13:55 ` [PATCH v2 11/13] clk: at91: sama5d2: Add Generic Clocks for UART/USART Sergiu Moga
2022-09-06 13:55 ` [PATCH v2 12/13] tty: serial: atmel: Make the driver aware of the existence of GCLK Sergiu Moga
2022-09-07 9:36 ` Ilpo Järvinen
2022-09-07 11:11 ` Sergiu.Moga
2022-09-07 11:29 ` Ilpo Järvinen
2022-09-12 8:06 ` Claudiu.Beznea
2022-09-06 13:55 ` [PATCH v2 13/13] dt-bindings: serial: atmel,at91-usart: Add gclk as a possible USART clock Sergiu Moga
2022-09-08 12:35 ` Krzysztof Kozlowski
2022-09-08 15:33 ` Sergiu.Moga
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