16a24490fSKrzysztof Kozlowski# SPDX-License-Identifier: GPL-2.0 26a24490fSKrzysztof Kozlowski%YAML 1.2 36a24490fSKrzysztof Kozlowski--- 46a24490fSKrzysztof Kozlowski$id: http://devicetree.org/schemas/serial/samsung_uart.yaml# 56a24490fSKrzysztof Kozlowski$schema: http://devicetree.org/meta-schemas/core.yaml# 66a24490fSKrzysztof Kozlowski 76a24490fSKrzysztof Kozlowskititle: Samsung S3C, S5P and Exynos SoC UART Controller 86a24490fSKrzysztof Kozlowski 96a24490fSKrzysztof Kozlowskimaintainers: 106a24490fSKrzysztof Kozlowski - Krzysztof Kozlowski <krzk@kernel.org> 116a24490fSKrzysztof Kozlowski - Greg Kroah-Hartman <gregkh@linuxfoundation.org> 126a24490fSKrzysztof Kozlowski 136a24490fSKrzysztof Kozlowskidescription: |+ 146a24490fSKrzysztof Kozlowski Each Samsung UART should have an alias correctly numbered in the "aliases" 156a24490fSKrzysztof Kozlowski node, according to serialN format, where N is the port number (non-negative 166a24490fSKrzysztof Kozlowski decimal integer) as specified by User's Manual of respective SoC. 176a24490fSKrzysztof Kozlowski 186a24490fSKrzysztof Kozlowskiproperties: 196a24490fSKrzysztof Kozlowski compatible: 206a24490fSKrzysztof Kozlowski items: 216a24490fSKrzysztof Kozlowski - enum: 226a24490fSKrzysztof Kozlowski - samsung,s3c2410-uart 236a24490fSKrzysztof Kozlowski - samsung,s3c2412-uart 246a24490fSKrzysztof Kozlowski - samsung,s3c2440-uart 256a24490fSKrzysztof Kozlowski - samsung,s3c6400-uart 266a24490fSKrzysztof Kozlowski - samsung,s5pv210-uart 276a24490fSKrzysztof Kozlowski - samsung,exynos4210-uart 286a24490fSKrzysztof Kozlowski 296a24490fSKrzysztof Kozlowski reg: 306a24490fSKrzysztof Kozlowski maxItems: 1 316a24490fSKrzysztof Kozlowski 327ad3bee4SHyunki Koo reg-io-width: 337ad3bee4SHyunki Koo description: | 347ad3bee4SHyunki Koo The size (in bytes) of the IO accesses that should be performed 357ad3bee4SHyunki Koo on the device. 36086e9074SRob Herring $ref: /schemas/types.yaml#/definitions/uint32 37086e9074SRob Herring enum: [ 1, 4 ] 387ad3bee4SHyunki Koo 396a24490fSKrzysztof Kozlowski clocks: 406a24490fSKrzysztof Kozlowski minItems: 2 416a24490fSKrzysztof Kozlowski maxItems: 5 426a24490fSKrzysztof Kozlowski 436a24490fSKrzysztof Kozlowski clock-names: 446a24490fSKrzysztof Kozlowski description: N = 0 is allowed for SoCs without internal baud clock mux. 456a24490fSKrzysztof Kozlowski minItems: 2 466a24490fSKrzysztof Kozlowski maxItems: 5 476a24490fSKrzysztof Kozlowski items: 486a24490fSKrzysztof Kozlowski - const: uart 496a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 506a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 516a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 526a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 536a24490fSKrzysztof Kozlowski 546a24490fSKrzysztof Kozlowski interrupts: 556a24490fSKrzysztof Kozlowski description: RX interrupt and optionally TX interrupt. 566a24490fSKrzysztof Kozlowski minItems: 1 576a24490fSKrzysztof Kozlowski maxItems: 2 586a24490fSKrzysztof Kozlowski 596a24490fSKrzysztof Kozlowski samsung,uart-fifosize: 606a24490fSKrzysztof Kozlowski description: The fifo size supported by the UART channel. 613d21a460SRob Herring $ref: /schemas/types.yaml#/definitions/uint32 623d21a460SRob Herring enum: [16, 64, 256] 636a24490fSKrzysztof Kozlowski 646a24490fSKrzysztof Kozlowskirequired: 656a24490fSKrzysztof Kozlowski - compatible 666a24490fSKrzysztof Kozlowski - clocks 676a24490fSKrzysztof Kozlowski - clock-names 686a24490fSKrzysztof Kozlowski - interrupts 696a24490fSKrzysztof Kozlowski - reg 706a24490fSKrzysztof Kozlowski 716a24490fSKrzysztof KozlowskiallOf: 726a24490fSKrzysztof Kozlowski - if: 736a24490fSKrzysztof Kozlowski properties: 746a24490fSKrzysztof Kozlowski compatible: 756a24490fSKrzysztof Kozlowski contains: 766a24490fSKrzysztof Kozlowski enum: 776a24490fSKrzysztof Kozlowski - samsung,s3c2410-uart 786a24490fSKrzysztof Kozlowski - samsung,s5pv210-uart 796a24490fSKrzysztof Kozlowski then: 806a24490fSKrzysztof Kozlowski properties: 816a24490fSKrzysztof Kozlowski clocks: 826a24490fSKrzysztof Kozlowski minItems: 2 836a24490fSKrzysztof Kozlowski maxItems: 3 846a24490fSKrzysztof Kozlowski clock-names: 856a24490fSKrzysztof Kozlowski minItems: 2 866a24490fSKrzysztof Kozlowski maxItems: 3 876a24490fSKrzysztof Kozlowski items: 886a24490fSKrzysztof Kozlowski - const: uart 896a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-1]$' 906a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-1]$' 916a24490fSKrzysztof Kozlowski 926a24490fSKrzysztof Kozlowski - if: 936a24490fSKrzysztof Kozlowski properties: 946a24490fSKrzysztof Kozlowski compatible: 956a24490fSKrzysztof Kozlowski contains: 966a24490fSKrzysztof Kozlowski enum: 976a24490fSKrzysztof Kozlowski - samsung,exynos4210-uart 986a24490fSKrzysztof Kozlowski then: 996a24490fSKrzysztof Kozlowski properties: 1006a24490fSKrzysztof Kozlowski clocks: 1016a24490fSKrzysztof Kozlowski minItems: 2 1026a24490fSKrzysztof Kozlowski maxItems: 2 1036a24490fSKrzysztof Kozlowski clock-names: 1046a24490fSKrzysztof Kozlowski minItems: 2 1056a24490fSKrzysztof Kozlowski maxItems: 2 1066a24490fSKrzysztof Kozlowski items: 1076a24490fSKrzysztof Kozlowski - const: uart 1086a24490fSKrzysztof Kozlowski - const: clk_uart_baud0 1096a24490fSKrzysztof Kozlowski 1106a24490fSKrzysztof Kozlowskiexamples: 1116a24490fSKrzysztof Kozlowski - | 1126a24490fSKrzysztof Kozlowski #include <dt-bindings/clock/samsung,s3c64xx-clock.h> 1136a24490fSKrzysztof Kozlowski 1146a24490fSKrzysztof Kozlowski uart0: serial@7f005000 { 1156a24490fSKrzysztof Kozlowski compatible = "samsung,s3c6400-uart"; 1166a24490fSKrzysztof Kozlowski reg = <0x7f005000 0x100>; 1176a24490fSKrzysztof Kozlowski interrupt-parent = <&vic1>; 1186a24490fSKrzysztof Kozlowski interrupts = <5>; 1196a24490fSKrzysztof Kozlowski clock-names = "uart", "clk_uart_baud2", 1206a24490fSKrzysztof Kozlowski "clk_uart_baud3"; 1216a24490fSKrzysztof Kozlowski clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>, 1226a24490fSKrzysztof Kozlowski <&clocks SCLK_UART>; 1236a24490fSKrzysztof Kozlowski samsung,uart-fifosize = <16>; 1246a24490fSKrzysztof Kozlowski }; 125