Commit 1eece23d authored by Johan Jonker's avatar Johan Jonker Committed by Ulf Hansson
Browse files

dt-bindings: mmc: convert rockchip dw-mshc bindings to yaml 



Current dts files with 'dwmmc' nodes are manually verified.
In order to automate this process rockchip-dw-mshc.txt
has to be converted to yaml. In the new setup
rockchip-dw-mshc.yaml will inherit properties from
mmc-controller.yaml and synopsys-dw-mshc-common.yaml.
'dwmmc' will no longer be a valid name for a node and
should be changed to 'mmc'.

Signed-off-by: default avatarJohan Jonker <jbx6244@gmail.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/20200116152230.29831-2-jbx6244@gmail.com


Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
parent 8655ff21

Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt

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* Rockchip specific extensions to the Synopsys Designware Mobile

  Storage Host Controller



The Synopsys designware mobile storage host controller is used to interface

a SoC with storage medium such as eMMC or SD/MMC cards. This file documents

differences between the core Synopsys dw mshc controller properties described

by synopsys-dw-mshc.txt and the properties used by the Rockchip specific

extensions to the Synopsys Designware Mobile Storage Host Controller.



Required Properties:



* compatible: should be

	- "rockchip,rk2928-dw-mshc": for Rockchip RK2928 and following,

							before RK3288

	- "rockchip,rk3288-dw-mshc": for Rockchip RK3288

	- "rockchip,rv1108-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RV1108

	- "rockchip,px30-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip PX30

	- "rockchip,rk3036-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3036

	- "rockchip,rk3228-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK322x

	- "rockchip,rk3328-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3328

	- "rockchip,rk3368-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3368

	- "rockchip,rk3399-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3399



Optional Properties:

* clocks: from common clock binding: if ciu-drive and ciu-sample are

  specified in clock-names, should contain handles to these clocks.



* clock-names: Apart from the clock-names described in synopsys-dw-mshc.txt

  two more clocks "ciu-drive" and "ciu-sample" are supported. They are used

  to control the clock phases, "ciu-sample" is required for tuning high-

  speed modes.



* rockchip,default-sample-phase: The default phase to set ciu-sample at

  probing, low speeds or in case where all phases work at tuning time.

  If not specified 0 deg will be used.



* rockchip,desired-num-phases: The desired number of times that the host

  execute tuning when needed. If not specified, the host will do tuning

  for 360 times, namely tuning for each degree.



Example:



	rkdwmmc0@12200000 {

		compatible = "rockchip,rk3288-dw-mshc";

		reg = <0x12200000 0x1000>;

		interrupts = <0 75 0>;

		#address-cells = <1>;

		#size-cells = <0>;

	};

Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml

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# SPDX-License-Identifier: GPL-2.0

%YAML 1.2

---

$id: http://devicetree.org/schemas/mmc/rockchip-dw-mshc.yaml#

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



title: Rockchip designware mobile storage host controller device tree bindings



description:

  Rockchip uses the Synopsys designware mobile storage host controller

  to interface a SoC with storage medium such as eMMC or SD/MMC cards.

  This file documents the combined properties for the core Synopsys dw mshc

  controller that are not already included in the synopsys-dw-mshc-common.yaml

  file and the Rockchip specific extensions.



allOf:

  - $ref: "synopsys-dw-mshc-common.yaml#"



maintainers:

  - Heiko Stuebner <heiko@sntech.de>



# Everything else is described in the common file

properties:

  compatible:

    oneOf:

      # for Rockchip RK2928 and before RK3288

      - const: rockchip,rk2928-dw-mshc

      # for Rockchip RK3288

      - const: rockchip,rk3288-dw-mshc

      - items:

          - enum:

            # for Rockchip PX30

            - rockchip,px30-dw-mshc

            # for Rockchip RK3036

            - rockchip,rk3036-dw-mshc

            # for Rockchip RK322x

            - rockchip,rk3228-dw-mshc

            # for Rockchip RK3328

            - rockchip,rk3328-dw-mshc

            # for Rockchip RK3368

            - rockchip,rk3368-dw-mshc

            # for Rockchip RK3399

            - rockchip,rk3399-dw-mshc

            # for Rockchip RV1108

            - rockchip,rv1108-dw-mshc

          - const: rockchip,rk3288-dw-mshc



  reg:

    maxItems: 1



  interrupts:

    maxItems: 1



  clocks:

    minItems: 2

    maxItems: 4

    description:

      Handle to "biu" and "ciu" clocks for the bus interface unit clock and

      the card interface unit clock. If "ciu-drive" and "ciu-sample" are

      specified in clock-names, it should also contain

      handles to these clocks.



  clock-names:

    minItems: 2

    items:

      - const: biu

      - const: ciu

      - const: ciu-drive

      - const: ciu-sample

    description:

      Apart from the clock-names "biu" and "ciu" two more clocks

      "ciu-drive" and "ciu-sample" are supported. They are used

      to control the clock phases, "ciu-sample" is required for tuning

      high speed modes.



  rockchip,default-sample-phase:

    allOf:

      - $ref: /schemas/types.yaml#/definitions/uint32

    minimum: 0

    maximum: 360

    default: 0

    description:

      The default phase to set "ciu-sample" at probing,

      low speeds or in case where all phases work at tuning time.

      If not specified 0 deg will be used.



  rockchip,desired-num-phases:

    allOf:

      - $ref: /schemas/types.yaml#/definitions/uint32

    minimum: 0

    maximum: 360

    default: 360

    description:

      The desired number of times that the host execute tuning when needed.

      If not specified, the host will do tuning for 360 times,

      namely tuning for each degree.



required:

  - compatible

  - reg

  - interrupts

  - clocks

  - clock-names



examples:

  - |

    #include <dt-bindings/clock/rk3288-cru.h>

    #include <dt-bindings/interrupt-controller/arm-gic.h>

    #include <dt-bindings/interrupt-controller/irq.h>

    sdmmc: mmc@ff0c0000 {

      compatible = "rockchip,rk3288-dw-mshc";

      reg = <0x0 0xff0c0000 0x0 0x4000>;

      interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;

      clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,

               <&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;

      clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";

      resets = <&cru SRST_MMC0>;

      reset-names = "reset";

      fifo-depth = <0x100>;

      max-frequency = <150000000>;

    };



...

MAINTAINERS

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@@ -2240,6 +2240,7 @@ L: linux-rockchip@lists.infradead.org 
T:	git git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git

S:	Maintained

F:	Documentation/devicetree/bindings/i2c/i2c-rk3x.txt

F:	Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml

F:	arch/arm/boot/dts/rk3*

F:	arch/arm/boot/dts/rv1108*

F:	arch/arm/mach-rockchip/

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