diff options
author | Kamel Bouhara <kamel.bouhara@bootlin.com> | 2020-07-06 14:43:46 +0300 |
---|---|---|
committer | Jonathan Cameron <Jonathan.Cameron@huawei.com> | 2020-07-20 15:03:40 +0300 |
commit | 7eb181cf06372311f58b237ce9e7434c427b56b7 (patch) | |
tree | f25520511971f03e2ab19484939918f5e38c6620 /Documentation/devicetree/bindings/soc | |
parent | 3f07899fc363c99b0d1ef00d8c60a380465690b5 (diff) | |
download | linux-7eb181cf06372311f58b237ce9e7434c427b56b7.tar.xz |
dt-bindings: counter: microchip-tcb-capture counter
Describe the devicetree binding for the Microchip TCB module.
Each counter blocks exposes three independent counters.
However, when configured in quadrature decoder, both channel <0> and <1>
are required for speed/position and rotation capture (yet only the
position is captured).
Signed-off-by: Kamel Bouhara <kamel.bouhara@bootlin.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Diffstat (limited to 'Documentation/devicetree/bindings/soc')
-rw-r--r-- | Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml | 32 |
1 files changed, 29 insertions, 3 deletions
diff --git a/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml index d226fd7d5258..3cd0b70cd6cf 100644 --- a/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml +++ b/Documentation/devicetree/bindings/soc/microchip/atmel,at91rm9200-tcb.yaml @@ -52,14 +52,20 @@ properties: patternProperties: "^timer@[0-2]$": - description: The timer block channels that are used as timers. + description: The timer block channels that are used as timers or counters. type: object properties: compatible: - const: atmel,tcb-timer + items: + - enum: + - atmel,tcb-timer + - microchip,tcb-capture reg: description: - List of channels to use for this particular timer. + List of channels to use for this particular timer. In Microchip TCB capture + mode channels are registered as a counter devices, for the qdec mode TCB0's + channel <0> and <1> are required. + minItems: 1 maxItems: 3 @@ -153,3 +159,23 @@ examples: reg = <1>; }; }; + /* TCB0 Capture with QDEC: */ + timer@f800c000 { + compatible = "atmel,at91rm9200-tcb", "simple-mfd", "syscon"; + #address-cells = <1>; + #size-cells = <0>; + reg = <0xfff7c000 0x100>; + interrupts = <18 4>; + clocks = <&tcb0_clk>, <&clk32k>; + clock-names = "t0_clk", "slow_clk"; + + timer@0 { + compatible = "microchip,tcb-capture"; + reg = <0>, <1>; + }; + + timer@2 { + compatible = "atmel,tcb-timer"; + reg = <2>; + }; + }; |