Commit def1baeb authored by Piotr Wojtaszczyk's avatar Piotr Wojtaszczyk Committed by Rob Herring (Arm)
Browse files

dt-bindings: dma: Add lpc32xx DMA mux binding 



LPC32XX SoCs use pl080 dma controller which have few request signals
multiplexed between peripherals. This binding describes how devices can
use the multiplexed request signals.

Signed-off-by: default avatarPiotr Wojtaszczyk <piotr.wojtaszczyk@timesys.com>
Reviewed-by: default avatarKrzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Link: https://lore.kernel.org/r/20240627150046.258795-3-piotr.wojtaszczyk@timesys.com


Signed-off-by: default avatarRob Herring (Arm) <robh@kernel.org>
parent f8fd6646

Documentation/devicetree/bindings/dma/nxp,lpc3220-dmamux.yaml

0 → 100644
+49 −0
Original line number Diff line number Diff line 
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)

%YAML 1.2

---

$id: http://devicetree.org/schemas/dma/nxp,lpc3220-dmamux.yaml#

$schema: http://devicetree.org/meta-schemas/core.yaml#



title: DMA multiplexer for LPC32XX SoC (DMA request router)



maintainers:

  - J.M.B. Downing <jonathan.downing@nautel.com>

  - Piotr Wojtaszczyk <piotr.wojtaszczyk@timesys.com>



allOf:

  - $ref: dma-router.yaml#



properties:

  compatible:

    const: nxp,lpc3220-dmamux



  reg:

    maxItems: 1



  dma-masters:

    description: phandle to a dma node compatible with arm,pl080

    maxItems: 1



  "#dma-cells":

    const: 3

    description: |

      First two cells same as for device pointed in dma-masters.

      Third cell represents mux value for the request.



required:

  - compatible

  - reg

  - dma-masters



additionalProperties: false



examples:

  - |

    dma-router@7c {

      compatible = "nxp,lpc3220-dmamux";

      reg = <0x7c 0x8>;

      dma-masters = <&dma>;

      #dma-cells = <3>;

    };



...

MAINTAINERS

+9 −0
Original line number Diff line number Diff line
@@ -2428,6 +2428,7 @@ N: lpc18xx 








ARM/LPC32XX SOC SUPPORT









M:	Vladimir Zapolskiy <vz@mleia.com>









M:	Piotr Wojtaszczyk <piotr.wojtaszczyk@timesys.com>









L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)









S:	Maintained









T:	git git://github.com/vzapolskiy/linux-lpc32xx.git








@@ -2440,6 +2441,14 @@ F:	drivers/usb/host/ohci-nxp.c







F:	drivers/watchdog/pnx4008_wdt.c









N:	lpc32xx

















LPC32XX DMAMUX SUPPORT









M:	J.M.B. Downing <jonathan.downing@nautel.com>









M:	Piotr Wojtaszczyk <piotr.wojtaszczyk@timesys.com>









R:	Vladimir Zapolskiy <vz@mleia.com>









L:	linux-arm-kernel@lists.infradead.org (moderated for non-subscribers)









S:	Maintained









F:	Documentation/devicetree/bindings/dma/nxp,lpc3220-dmamux.yaml

















ARM/Marvell Dove/MV78xx0/Orion SOC support









M:	Andrew Lunn <andrew@lunn.ch>









M:	Sebastian Hesselbarth <sebastian.hesselbarth@gmail.com>