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 oneOf: 216a24490fSKrzysztof Kozlowski - items: 22b8466833SHector Martin - const: samsung,exynosautov9-uart 2302a64ef6SVincent Whitchurch - const: samsung,exynos850-uart 246a24490fSKrzysztof Kozlowski - enum: 256a24490fSKrzysztof Kozlowski - apple,s5l-uart 266a24490fSKrzysztof Kozlowski - axis,artpec8-uart 276a24490fSKrzysztof Kozlowski - samsung,s3c2410-uart 286a24490fSKrzysztof Kozlowski - samsung,s3c2412-uart 296a24490fSKrzysztof Kozlowski - samsung,s3c2440-uart 300fc58931SKrzysztof Kozlowski - samsung,s3c6400-uart 31538a9909SSam Protsenko - samsung,s5pv210-uart 326a24490fSKrzysztof Kozlowski - samsung,exynos4210-uart 336a24490fSKrzysztof Kozlowski - samsung,exynos5433-uart 346a24490fSKrzysztof Kozlowski - samsung,exynos850-uart 356a24490fSKrzysztof Kozlowski 367ad3bee4SHyunki Koo reg: 377ad3bee4SHyunki Koo maxItems: 1 387ad3bee4SHyunki Koo 397ad3bee4SHyunki Koo reg-io-width: 40086e9074SRob Herring description: | 417ad3bee4SHyunki Koo The size (in bytes) of the IO accesses that should be performed 426a24490fSKrzysztof Kozlowski on the device. 436a24490fSKrzysztof Kozlowski enum: [ 1, 4 ] 446a24490fSKrzysztof Kozlowski 456a24490fSKrzysztof Kozlowski clocks: 466a24490fSKrzysztof Kozlowski minItems: 2 476a24490fSKrzysztof Kozlowski maxItems: 5 486a24490fSKrzysztof Kozlowski 496a24490fSKrzysztof Kozlowski clock-names: 506a24490fSKrzysztof Kozlowski description: N = 0 is allowed for SoCs without internal baud clock mux. 516a24490fSKrzysztof Kozlowski minItems: 2 526a24490fSKrzysztof Kozlowski items: 536a24490fSKrzysztof Kozlowski - const: uart 546a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 556a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 5671b25f4dSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 5771b25f4dSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-3]$' 5871b25f4dSKrzysztof Kozlowski 5971b25f4dSKrzysztof Kozlowski dmas: 6071b25f4dSKrzysztof Kozlowski items: 6171b25f4dSKrzysztof Kozlowski - description: DMA controller phandle and request line for RX 6271b25f4dSKrzysztof Kozlowski - description: DMA controller phandle and request line for TX 6371b25f4dSKrzysztof Kozlowski 6471b25f4dSKrzysztof Kozlowski dma-names: 6571b25f4dSKrzysztof Kozlowski items: 666a24490fSKrzysztof Kozlowski - const: rx 676a24490fSKrzysztof Kozlowski - const: tx 686a24490fSKrzysztof Kozlowski 696a24490fSKrzysztof Kozlowski interrupts: 706a24490fSKrzysztof Kozlowski description: RX interrupt and optionally TX interrupt. 71*bf93e887SRob Herring minItems: 1 72*bf93e887SRob Herring maxItems: 2 73*bf93e887SRob Herring 746a24490fSKrzysztof Kozlowski power-domains: 756a24490fSKrzysztof Kozlowski maxItems: 1 763d21a460SRob Herring 773d21a460SRob Herring samsung,uart-fifosize: 786a24490fSKrzysztof Kozlowski description: The fifo size supported by the UART channel. 796a24490fSKrzysztof Kozlowski $ref: /schemas/types.yaml#/definitions/uint32 806a24490fSKrzysztof Kozlowski enum: [16, 64, 256] 816a24490fSKrzysztof Kozlowski 826a24490fSKrzysztof Kozlowskirequired: 836a24490fSKrzysztof Kozlowski - compatible 846a24490fSKrzysztof Kozlowski - clocks 856a24490fSKrzysztof Kozlowski - clock-names 86e7d1737cSKrzysztof Kozlowski - interrupts 875be478f9SRob Herring - reg 886a24490fSKrzysztof Kozlowski 898f082dcfSZhen LeiunevaluatedProperties: false 90e7d1737cSKrzysztof Kozlowski 916a24490fSKrzysztof KozlowskiallOf: 926a24490fSKrzysztof Kozlowski - $ref: serial.yaml# 936a24490fSKrzysztof Kozlowski 946a24490fSKrzysztof Kozlowski - if: 956a24490fSKrzysztof Kozlowski properties: 966a24490fSKrzysztof Kozlowski compatible: 976a24490fSKrzysztof Kozlowski contains: 986a24490fSKrzysztof Kozlowski enum: 996a24490fSKrzysztof Kozlowski - samsung,s3c2410-uart 1006a24490fSKrzysztof Kozlowski - samsung,s5pv210-uart 1016a24490fSKrzysztof Kozlowski then: 1026a24490fSKrzysztof Kozlowski properties: 1036a24490fSKrzysztof Kozlowski clocks: 1046a24490fSKrzysztof Kozlowski minItems: 2 1056a24490fSKrzysztof Kozlowski maxItems: 3 1066a24490fSKrzysztof Kozlowski clock-names: 1076a24490fSKrzysztof Kozlowski minItems: 2 1086a24490fSKrzysztof Kozlowski items: 1096a24490fSKrzysztof Kozlowski - const: uart 1106a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-1]$' 1116a24490fSKrzysztof Kozlowski - pattern: '^clk_uart_baud[0-1]$' 1126a24490fSKrzysztof Kozlowski 1136a24490fSKrzysztof Kozlowski - if: 1146a24490fSKrzysztof Kozlowski properties: 115b8466833SHector Martin compatible: 11602a64ef6SVincent Whitchurch contains: 1176a24490fSKrzysztof Kozlowski enum: 1180fc58931SKrzysztof Kozlowski - apple,s5l-uart 1196a24490fSKrzysztof Kozlowski - axis,artpec8-uart 1206a24490fSKrzysztof Kozlowski - samsung,exynos4210-uart 1216a24490fSKrzysztof Kozlowski - samsung,exynos5433-uart 1226a24490fSKrzysztof Kozlowski then: 1236a24490fSKrzysztof Kozlowski properties: 1246a24490fSKrzysztof Kozlowski clocks: 1256a24490fSKrzysztof Kozlowski maxItems: 2 1266a24490fSKrzysztof Kozlowski clock-names: 1276a24490fSKrzysztof Kozlowski items: 1286a24490fSKrzysztof Kozlowski - const: uart 1296a24490fSKrzysztof Kozlowski - const: clk_uart_baud0 1306a24490fSKrzysztof Kozlowski 1316a24490fSKrzysztof Kozlowskiexamples: 1326a24490fSKrzysztof Kozlowski - | 1336a24490fSKrzysztof Kozlowski #include <dt-bindings/clock/samsung,s3c64xx-clock.h> 1346a24490fSKrzysztof Kozlowski 1356a24490fSKrzysztof Kozlowski uart0: serial@7f005000 { 1366a24490fSKrzysztof Kozlowski compatible = "samsung,s3c6400-uart"; 1376a24490fSKrzysztof Kozlowski reg = <0x7f005000 0x100>; 1386a24490fSKrzysztof Kozlowski interrupt-parent = <&vic1>; 1396a24490fSKrzysztof Kozlowski interrupts = <5>; 1406a24490fSKrzysztof Kozlowski clock-names = "uart", "clk_uart_baud2", 1416a24490fSKrzysztof Kozlowski "clk_uart_baud3"; 1426a24490fSKrzysztof Kozlowski clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>, 143 <&clocks SCLK_UART>; 144 samsung,uart-fifosize = <16>; 145 }; 146