diff options
author | Krzysztof Kozlowski <krzk@kernel.org> | 2019-11-03 17:01:12 +0100 |
---|---|---|
committer | Rob Herring <robh@kernel.org> | 2019-11-05 16:48:22 -0600 |
commit | 6a24490fd664d4fc581971dbc12beb914b147726 (patch) | |
tree | e20f3c78d48573e887f3a0a70abefec833cadef1 | |
parent | 23c091d95a9860b5afb245fee7c20931ab1dce28 (diff) | |
download | blackbird-op-linux-6a24490fd664d4fc581971dbc12beb914b147726.tar.gz blackbird-op-linux-6a24490fd664d4fc581971dbc12beb914b147726.zip |
dt-bindings: serial: Convert Samsung UART bindings to json-schema
Convert Samsung S3C/S5P/Exynos Serial/UART bindings to DT schema format
using json-schema.
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Rob Herring <robh@kernel.org>
3 files changed, 119 insertions, 59 deletions
diff --git a/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt b/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt index d759da606f75..30ea27c3936d 100644 --- a/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt +++ b/Documentation/devicetree/bindings/mfd/samsung,exynos5433-lpass.txt @@ -18,7 +18,7 @@ an optional sub-node. For "samsung,exynos5433-lpass" compatible this includes: UART, SLIMBUS, PCM, I2S, DMAC, Timers 0...4, VIC, WDT 0...1 devices. Bindings of the sub-nodes are described in: - ../serial/samsung_uart.txt + ../serial/samsung_uart.yaml ../sound/samsung-i2s.txt ../dma/arm-pl330.txt diff --git a/Documentation/devicetree/bindings/serial/samsung_uart.txt b/Documentation/devicetree/bindings/serial/samsung_uart.txt deleted file mode 100644 index e85f37ec33f0..000000000000 --- a/Documentation/devicetree/bindings/serial/samsung_uart.txt +++ /dev/null @@ -1,58 +0,0 @@ -* Samsung's UART Controller - -The Samsung's UART controller is used for interfacing SoC with serial -communicaion devices. - -Required properties: -- compatible: should be one of following: - - "samsung,exynos4210-uart" - Exynos4210 SoC, - - "samsung,s3c2410-uart" - compatible with ports present on S3C2410 SoC, - - "samsung,s3c2412-uart" - compatible with ports present on S3C2412 SoC, - - "samsung,s3c2440-uart" - compatible with ports present on S3C2440 SoC, - - "samsung,s3c6400-uart" - compatible with ports present on S3C6400 SoC, - - "samsung,s5pv210-uart" - compatible with ports present on S5PV210 SoC. - -- reg: base physical address of the controller and length of memory mapped - region. - -- interrupts: a single interrupt signal to SoC interrupt controller, - according to interrupt bindings documentation [1]. - -- clock-names: input names of clocks used by the controller: - - "uart" - controller bus clock, - - "clk_uart_baudN" - Nth baud base clock input (N = 0, 1, ...), - according to SoC User's Manual (only N = 0 is allowedfor SoCs without - internal baud clock mux). -- clocks: phandles and specifiers for all clocks specified in "clock-names" - property, in the same order, according to clock bindings documentation [2]. - -[1] Documentation/devicetree/bindings/interrupt-controller/interrupts.txt -[2] Documentation/devicetree/bindings/clock/clock-bindings.txt - -Optional properties: -- samsung,uart-fifosize: The fifo size supported by the UART channel - -Note: Each Samsung UART should have an alias correctly numbered in the -"aliases" node, according to serialN format, where N is the port number -(non-negative decimal integer) as specified by User's Manual of respective -SoC. - -Example: - aliases { - serial0 = &uart0; - serial1 = &uart1; - serial2 = &uart2; - }; - -Example: - uart1: serial@7f005400 { - compatible = "samsung,s3c6400-uart"; - reg = <0x7f005400 0x100>; - interrupt-parent = <&vic1>; - interrupts = <6>; - clock-names = "uart", "clk_uart_baud2", - "clk_uart_baud3"; - clocks = <&clocks PCLK_UART1>, <&clocks PCLK_UART1>, - <&clocks SCLK_UART>; - samsung,uart-fifosize = <16>; - }; diff --git a/Documentation/devicetree/bindings/serial/samsung_uart.yaml b/Documentation/devicetree/bindings/serial/samsung_uart.yaml new file mode 100644 index 000000000000..9d2ce347875b --- /dev/null +++ b/Documentation/devicetree/bindings/serial/samsung_uart.yaml @@ -0,0 +1,118 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/serial/samsung_uart.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Samsung S3C, S5P and Exynos SoC UART Controller + +maintainers: + - Krzysztof Kozlowski <krzk@kernel.org> + - Greg Kroah-Hartman <gregkh@linuxfoundation.org> + +description: |+ + Each Samsung UART should have an alias correctly numbered in the "aliases" + node, according to serialN format, where N is the port number (non-negative + decimal integer) as specified by User's Manual of respective SoC. + +properties: + compatible: + items: + - enum: + - samsung,s3c2410-uart + - samsung,s3c2412-uart + - samsung,s3c2440-uart + - samsung,s3c6400-uart + - samsung,s5pv210-uart + - samsung,exynos4210-uart + + reg: + maxItems: 1 + + clocks: + minItems: 2 + maxItems: 5 + + clock-names: + description: N = 0 is allowed for SoCs without internal baud clock mux. + minItems: 2 + maxItems: 5 + items: + - const: uart + - pattern: '^clk_uart_baud[0-3]$' + - pattern: '^clk_uart_baud[0-3]$' + - pattern: '^clk_uart_baud[0-3]$' + - pattern: '^clk_uart_baud[0-3]$' + + interrupts: + description: RX interrupt and optionally TX interrupt. + minItems: 1 + maxItems: 2 + + samsung,uart-fifosize: + description: The fifo size supported by the UART channel. + allOf: + - $ref: /schemas/types.yaml#/definitions/uint32 + - enum: [16, 64, 256] + +required: + - compatible + - clocks + - clock-names + - interrupts + - reg + +allOf: + - if: + properties: + compatible: + contains: + enum: + - samsung,s3c2410-uart + - samsung,s5pv210-uart + then: + properties: + clocks: + minItems: 2 + maxItems: 3 + clock-names: + minItems: 2 + maxItems: 3 + items: + - const: uart + - pattern: '^clk_uart_baud[0-1]$' + - pattern: '^clk_uart_baud[0-1]$' + + - if: + properties: + compatible: + contains: + enum: + - samsung,exynos4210-uart + then: + properties: + clocks: + minItems: 2 + maxItems: 2 + clock-names: + minItems: 2 + maxItems: 2 + items: + - const: uart + - const: clk_uart_baud0 + +examples: + - | + #include <dt-bindings/clock/samsung,s3c64xx-clock.h> + + uart0: serial@7f005000 { + compatible = "samsung,s3c6400-uart"; + reg = <0x7f005000 0x100>; + interrupt-parent = <&vic1>; + interrupts = <5>; + clock-names = "uart", "clk_uart_baud2", + "clk_uart_baud3"; + clocks = <&clocks PCLK_UART0>, <&clocks PCLK_UART0>, + <&clocks SCLK_UART>; + samsung,uart-fifosize = <16>; + }; |