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 7b8466833SHector Martintitle: Samsung S3C, S5P, Exynos, and S5L (Apple SoC) 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: 22b8466833SHector Martin - apple,s5l-uart 23*02a64ef6SVincent Whitchurch - axis,artpec8-uart 246a24490fSKrzysztof Kozlowski - samsung,s3c2410-uart 256a24490fSKrzysztof Kozlowski - samsung,s3c2412-uart 266a24490fSKrzysztof Kozlowski - samsung,s3c2440-uart 276a24490fSKrzysztof Kozlowski - samsung,s3c6400-uart 286a24490fSKrzysztof Kozlowski - samsung,s5pv210-uart 296a24490fSKrzysztof Kozlowski - samsung,exynos4210-uart 300fc58931SKrzysztof Kozlowski - samsung,exynos5433-uart 31538a9909SSam Protsenko - samsung,exynos850-uart 326a24490fSKrzysztof Kozlowski 336a24490fSKrzysztof Kozlowski reg: 346a24490fSKrzysztof Kozlowski maxItems: 1 356a24490fSKrzysztof Kozlowski 367ad3bee4SHyunki Koo reg-io-width: 377ad3bee4SHyunki Koo description: | 387ad3bee4SHyunki Koo The size (in bytes) of the IO accesses that should be performed 397ad3bee4SHyunki Koo on the device. 40086e9074SRob Herring $ref: /schemas/types.yaml#/definitions/uint32 41086e9074SRob Herring enum: [ 1, 4 ] 427ad3bee4SHyunki Koo 436a24490fSKrzysztof Kozlowski clocks: 446a24490fSKrzysztof Kozlowski minItems: 2 456a24490fSKrzysztof Kozlowski maxItems: 5 466a24490fSKrzysztof Kozlowski 476a24490fSKrzysztof Kozlowski clock-names: 486a24490fSKrzysztof Kozlowski description: N = 0 is allowed for SoCs without internal baud clock mux. 496a24490fSKrzysztof Kozlowski minItems: 2 506a24490fSKrzysztof Kozlowski items: 516a24490fSKrzysztof Kozlowski - const: uart 526a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 536a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 546a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 556a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 566a24490fSKrzysztof Kozlowski 5771b25f4dSKrzysztof Kozlowski dmas: 5871b25f4dSKrzysztof Kozlowski items: 5971b25f4dSKrzysztof Kozlowski - description: DMA controller phandle and request line for RX 6071b25f4dSKrzysztof Kozlowski - description: DMA controller phandle and request line for TX 6171b25f4dSKrzysztof Kozlowski 6271b25f4dSKrzysztof Kozlowski dma-names: 6371b25f4dSKrzysztof Kozlowski items: 6471b25f4dSKrzysztof Kozlowski - const: rx 6571b25f4dSKrzysztof Kozlowski - const: tx 6671b25f4dSKrzysztof Kozlowski 676a24490fSKrzysztof Kozlowski interrupts: 686a24490fSKrzysztof Kozlowski description: RX interrupt and optionally TX interrupt. 696a24490fSKrzysztof Kozlowski minItems: 1 706a24490fSKrzysztof Kozlowski maxItems: 2 716a24490fSKrzysztof Kozlowski 726a24490fSKrzysztof Kozlowski samsung,uart-fifosize: 736a24490fSKrzysztof Kozlowski description: The fifo size supported by the UART channel. 743d21a460SRob Herring $ref: /schemas/types.yaml#/definitions/uint32 753d21a460SRob Herring enum: [16, 64, 256] 766a24490fSKrzysztof Kozlowski 776a24490fSKrzysztof Kozlowskirequired: 786a24490fSKrzysztof Kozlowski - compatible 796a24490fSKrzysztof Kozlowski - clocks 806a24490fSKrzysztof Kozlowski - clock-names 816a24490fSKrzysztof Kozlowski - interrupts 826a24490fSKrzysztof Kozlowski - reg 836a24490fSKrzysztof Kozlowski 84e7d1737cSKrzysztof KozlowskiunevaluatedProperties: false 855be478f9SRob Herring 866a24490fSKrzysztof KozlowskiallOf: 878f082dcfSZhen Lei - $ref: serial.yaml# 88e7d1737cSKrzysztof Kozlowski 896a24490fSKrzysztof Kozlowski - if: 906a24490fSKrzysztof Kozlowski properties: 916a24490fSKrzysztof Kozlowski compatible: 926a24490fSKrzysztof Kozlowski contains: 936a24490fSKrzysztof Kozlowski enum: 946a24490fSKrzysztof Kozlowski - samsung,s3c2410-uart 956a24490fSKrzysztof Kozlowski - samsung,s5pv210-uart 966a24490fSKrzysztof Kozlowski then: 976a24490fSKrzysztof Kozlowski properties: 986a24490fSKrzysztof Kozlowski clocks: 996a24490fSKrzysztof Kozlowski minItems: 2 1006a24490fSKrzysztof Kozlowski maxItems: 3 1016a24490fSKrzysztof Kozlowski clock-names: 1026a24490fSKrzysztof Kozlowski minItems: 2 1036a24490fSKrzysztof Kozlowski maxItems: 3 1046a24490fSKrzysztof Kozlowski items: 1056a24490fSKrzysztof Kozlowski - const: uart 1066a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-1]$' 1076a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-1]$' 1086a24490fSKrzysztof Kozlowski 1096a24490fSKrzysztof Kozlowski - if: 1106a24490fSKrzysztof Kozlowski properties: 1116a24490fSKrzysztof Kozlowski compatible: 1126a24490fSKrzysztof Kozlowski contains: 1136a24490fSKrzysztof Kozlowski enum: 114b8466833SHector Martin - apple,s5l-uart 115*02a64ef6SVincent Whitchurch - axis,artpec8-uart 1166a24490fSKrzysztof Kozlowski - samsung,exynos4210-uart 1170fc58931SKrzysztof Kozlowski - samsung,exynos5433-uart 1186a24490fSKrzysztof Kozlowski then: 1196a24490fSKrzysztof Kozlowski properties: 1206a24490fSKrzysztof Kozlowski clocks: 1216a24490fSKrzysztof Kozlowski minItems: 2 1226a24490fSKrzysztof Kozlowski maxItems: 2 1236a24490fSKrzysztof Kozlowski clock-names: 1246a24490fSKrzysztof Kozlowski minItems: 2 1256a24490fSKrzysztof Kozlowski maxItems: 2 1266a24490fSKrzysztof Kozlowski items: 1276a24490fSKrzysztof Kozlowski - const: uart 1286a24490fSKrzysztof Kozlowski - const: clk_uart_baud0 1296a24490fSKrzysztof Kozlowski 1306a24490fSKrzysztof Kozlowskiexamples: 1316a24490fSKrzysztof Kozlowski - | 1326a24490fSKrzysztof Kozlowski #include <dt-bindings/clock/samsung,s3c64xx-clock.h> 1336a24490fSKrzysztof Kozlowski 1346a24490fSKrzysztof Kozlowski uart0: serial@7f005000 { 1356a24490fSKrzysztof Kozlowski compatible = "samsung,s3c6400-uart"; 1366a24490fSKrzysztof Kozlowski reg = <0x7f005000 0x100>; 1376a24490fSKrzysztof Kozlowski interrupt-parent = <&vic1>; 1386a24490fSKrzysztof Kozlowski interrupts = <5>; 1396a24490fSKrzysztof Kozlowski clock-names = "uart", "clk_uart_baud2", 1406a24490fSKrzysztof Kozlowski "clk_uart_baud3"; 1416a24490fSKrzysztof Kozlowski clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>, 1426a24490fSKrzysztof Kozlowski <&clocks SCLK_UART>; 1436a24490fSKrzysztof Kozlowski samsung,uart-fifosize = <16>; 1446a24490fSKrzysztof Kozlowski }; 145