Re: [PATCH v2 1/3] dt-bindings: mmc: convert synopsys dw-mshc bindings to yaml

From: Ulf Hansson
Date: Fri Jan 24 2020 - 06:39:30 EST


On Thu, 16 Jan 2020 at 16:22, Johan Jonker <jbx6244@xxxxxxxxx> wrote:
>
> Current dts files with 'dwmmc' nodes are manually verified.
> In order to automate this process synopsys-dw-mshc.txt
> has to be converted to yaml. In the new setup
> synopsys-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: Johan Jonker <jbx6244@xxxxxxxxx>

Applied for next, thanks!

Kind regards
Uffe


> ---
> .../bindings/mmc/synopsys-dw-mshc-common.yaml | 68 ++++++++++
> .../devicetree/bindings/mmc/synopsys-dw-mshc.txt | 141 ---------------------
> .../devicetree/bindings/mmc/synopsys-dw-mshc.yaml | 70 ++++++++++
> 3 files changed, 138 insertions(+), 141 deletions(-)
> create mode 100644 Documentation/devicetree/bindings/mmc/synopsys-dw-mshc-common.yaml
> delete mode 100644 Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> create mode 100644 Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml
>
> diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc-common.yaml b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc-common.yaml
> new file mode 100644
> index 000000000..890d47a87
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc-common.yaml
> @@ -0,0 +1,68 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mmc/synopsys-dw-mshc-common.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Synopsys Designware Mobile Storage Host Controller Common Properties
> +
> +allOf:
> + - $ref: "mmc-controller.yaml#"
> +
> +maintainers:
> + - Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> +
> +# Everything else is described in the common file
> +properties:
> + resets:
> + maxItems: 1
> +
> + reset-names:
> + const: reset
> +
> + clock-frequency:
> + description:
> + Should be the frequency (in Hz) of the ciu clock. If this
> + is specified and the ciu clock is specified then we'll try to set the ciu
> + clock to this at probe time.
> +
> + fifo-depth:
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + The maximum size of the tx/rx fifo's. If this property is not
> + specified, the default value of the fifo size is determined from the
> + controller registers.
> +
> + card-detect-delay:
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32
> + - default: 0
> + description:
> + Delay in milli-seconds before detecting card after card
> + insert event. The default value is 0.
> +
> + data-addr:
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/uint32
> + description:
> + Override fifo address with value provided by DT. The default FIFO reg
> + offset is assumed as 0x100 (version < 0x240A) and 0x200(version >= 0x240A)
> + by driver. If the controller does not follow this rule, please use
> + this property to set fifo address in device tree.
> +
> + fifo-watermark-aligned:
> + allOf:
> + - $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + Data done irq is expected if data length is less than
> + watermark in PIO mode. But fifo watermark is requested to be aligned
> + with data length in some SoC so that TX/RX irq can be generated with
> + data done irq. Add this watermark quirk to mark this requirement and
> + force fifo watermark setting accordingly.
> +
> + dmas:
> + maxItems: 1
> +
> + dma-names:
> + const: rx-tx
> diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> deleted file mode 100644
> index 7e5e427a2..000000000
> --- a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> +++ /dev/null
> @@ -1,141 +0,0 @@
> -* 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 mmc properties described by mmc.txt and the
> -properties used by the Synopsys Designware Mobile Storage Host Controller.
> -
> -Required Properties:
> -
> -* compatible: should be
> - - snps,dw-mshc: for controllers compliant with synopsys dw-mshc.
> -* #address-cells: should be 1.
> -* #size-cells: should be 0.
> -
> -# Slots (DEPRECATED): The slot specific information are contained within
> - child-nodes with each child-node representing a supported slot. There should
> - be atleast one child node representing a card slot. The name of the child node
> - representing the slot is recommended to be slot@n where n is the unique number
> - of the slot connected to the controller. The following are optional properties
> - which can be included in the slot child node.
> -
> - * reg: specifies the physical slot number. The valid values of this
> - property is 0 to (num-slots -1), where num-slots is the value
> - specified by the num-slots property.
> -
> - * bus-width: as documented in mmc core bindings.
> -
> - * wp-gpios: specifies the write protect gpio line. The format of the
> - gpio specifier depends on the gpio controller. If a GPIO is not used
> - for write-protect, this property is optional.
> -
> - * disable-wp: If the wp-gpios property isn't present then (by default)
> - we'd assume that the write protect is hooked up directly to the
> - controller's special purpose write protect line (accessible via
> - the WRTPRT register). However, it's possible that we simply don't
> - want write protect. In that case specify 'disable-wp'.
> - NOTE: This property is not required for slots known to always
> - connect to eMMC or SDIO cards.
> -
> -Optional properties:
> -
> -* resets: phandle + reset specifier pair, intended to represent hardware
> - reset signal present internally in some host controller IC designs.
> - See Documentation/devicetree/bindings/reset/reset.txt for details.
> -
> -* reset-names: request name for using "resets" property. Must be "reset".
> - (It will be used together with "resets" property.)
> -
> -* clocks: from common clock binding: handle to biu and ciu clocks for the
> - bus interface unit clock and the card interface unit clock.
> -
> -* clock-names: from common clock binding: Shall be "biu" and "ciu".
> - If the biu clock is missing we'll simply skip enabling it. If the
> - ciu clock is missing we'll just assume that the clock is running at
> - clock-frequency. It is an error to omit both the ciu clock and the
> - clock-frequency.
> -
> -* clock-frequency: should be the frequency (in Hz) of the ciu clock. If this
> - is specified and the ciu clock is specified then we'll try to set the ciu
> - clock to this at probe time.
> -
> -* fifo-depth: The maximum size of the tx/rx fifo's. If this property is not
> - specified, the default value of the fifo size is determined from the
> - controller registers.
> -
> -* card-detect-delay: Delay in milli-seconds before detecting card after card
> - insert event. The default value is 0.
> -
> -* data-addr: Override fifo address with value provided by DT. The default FIFO reg
> - offset is assumed as 0x100 (version < 0x240A) and 0x200(version >= 0x240A) by
> - driver. If the controller does not follow this rule, please use this property
> - to set fifo address in device tree.
> -
> -* fifo-watermark-aligned: Data done irq is expected if data length is less than
> - watermark in PIO mode. But fifo watermark is requested to be aligned with data
> - length in some SoC so that TX/RX irq can be generated with data done irq. Add this
> - watermark quirk to mark this requirement and force fifo watermark setting
> - accordingly.
> -
> -* vmmc-supply: The phandle to the regulator to use for vmmc. If this is
> - specified we'll defer probe until we can find this regulator.
> -
> -* dmas: List of DMA specifiers with the controller specific format as described
> - in the generic DMA client binding. Refer to dma.txt for details.
> -
> -* dma-names: request names for generic DMA client binding. Must be "rx-tx".
> - Refer to dma.txt for details.
> -
> -Aliases:
> -
> -- All the MSHC controller nodes should be represented in the aliases node using
> - the following format 'mshc{n}' where n is a unique number for the alias.
> -
> -Example:
> -
> -The MSHC controller node can be split into two portions, SoC specific and
> -board specific portions as listed below.
> -
> - dwmmc0@12200000 {
> - compatible = "snps,dw-mshc";
> - clocks = <&clock 351>, <&clock 132>;
> - clock-names = "biu", "ciu";
> - reg = <0x12200000 0x1000>;
> - interrupts = <0 75 0>;
> - #address-cells = <1>;
> - #size-cells = <0>;
> - data-addr = <0x200>;
> - fifo-watermark-aligned;
> - resets = <&rst 20>;
> - reset-names = "reset";
> - };
> -
> -[board specific internal DMA resources]
> -
> - dwmmc0@12200000 {
> - clock-frequency = <400000000>;
> - clock-freq-min-max = <400000 200000000>;
> - broken-cd;
> - fifo-depth = <0x80>;
> - card-detect-delay = <200>;
> - vmmc-supply = <&buck8>;
> - bus-width = <8>;
> - cap-mmc-highspeed;
> - cap-sd-highspeed;
> - };
> -
> -[board specific generic DMA request binding]
> -
> - dwmmc0@12200000 {
> - clock-frequency = <400000000>;
> - clock-freq-min-max = <400000 200000000>;
> - broken-cd;
> - fifo-depth = <0x80>;
> - card-detect-delay = <200>;
> - vmmc-supply = <&buck8>;
> - bus-width = <8>;
> - cap-mmc-highspeed;
> - cap-sd-highspeed;
> - dmas = <&pdma 12>;
> - dma-names = "rx-tx";
> - };
> diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml
> new file mode 100644
> index 000000000..05f9f36dc
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.yaml
> @@ -0,0 +1,70 @@
> +# SPDX-License-Identifier: GPL-2.0
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mmc/synopsys-dw-mshc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Synopsys Designware Mobile Storage Host Controller Binding
> +
> +allOf:
> + - $ref: "synopsys-dw-mshc-common.yaml#"
> +
> +maintainers:
> + - Ulf Hansson <ulf.hansson@xxxxxxxxxx>
> +
> +# Everything else is described in the common file
> +properties:
> + compatible:
> + const: snps,dw-mshc
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + maxItems: 1
> +
> + clocks:
> + minItems: 2
> + maxItems: 2
> + description:
> + Handle to "biu" and "ciu" clocks for the
> + bus interface unit clock and the card interface unit clock.
> +
> + clock-names:
> + items:
> + - const: biu
> + - const: ciu
> +
> +required:
> + - compatible
> + - reg
> + - interrupts
> + - clocks
> + - clock-names
> +
> +examples:
> + - |
> + mmc@12200000 {
> + compatible = "snps,dw-mshc";
> + reg = <0x12200000 0x1000>;
> + interrupts = <0 75 0>;
> + clocks = <&clock 351>, <&clock 132>;
> + clock-names = "biu", "ciu";
> + dmas = <&pdma 12>;
> + dma-names = "rx-tx";
> + resets = <&rst 20>;
> + reset-names = "reset";
> + vmmc-supply = <&buck8>;
> + #address-cells = <1>;
> + #size-cells = <0>;
> + broken-cd;
> + bus-width = <8>;
> + cap-mmc-highspeed;
> + cap-sd-highspeed;
> + card-detect-delay = <200>;
> + clock-freq-min-max = <400000 200000000>;
> + clock-frequency = <400000000>;
> + data-addr = <0x200>;
> + fifo-depth = <0x80>;
> + fifo-watermark-aligned;
> + };
> --
> 2.11.0
>