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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: Johan Jonker <jbx6244@gmail.com> Reviewed-by: Rob Herring <robh@kernel.org> Link: https://lore.kernel.org/r/20200116152230.29831-2-jbx6244@gmail.com Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Johan Jonker
Ulf Hansson
parent
8655ff21c8
commit
1eece23dba
@ -1,49 +0,0 @@
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* Rockchip specific extensions to the Synopsys Designware Mobile
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Storage Host Controller
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The Synopsys designware mobile storage host controller is used to interface
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a SoC with storage medium such as eMMC or SD/MMC cards. This file documents
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differences between the core Synopsys dw mshc controller properties described
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by synopsys-dw-mshc.txt and the properties used by the Rockchip specific
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extensions to the Synopsys Designware Mobile Storage Host Controller.
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Required Properties:
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* compatible: should be
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- "rockchip,rk2928-dw-mshc": for Rockchip RK2928 and following,
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before RK3288
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- "rockchip,rk3288-dw-mshc": for Rockchip RK3288
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- "rockchip,rv1108-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RV1108
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- "rockchip,px30-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip PX30
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- "rockchip,rk3036-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3036
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- "rockchip,rk3228-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK322x
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- "rockchip,rk3328-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3328
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- "rockchip,rk3368-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3368
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- "rockchip,rk3399-dw-mshc", "rockchip,rk3288-dw-mshc": for Rockchip RK3399
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Optional Properties:
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* clocks: from common clock binding: if ciu-drive and ciu-sample are
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specified in clock-names, should contain handles to these clocks.
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* clock-names: Apart from the clock-names described in synopsys-dw-mshc.txt
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two more clocks "ciu-drive" and "ciu-sample" are supported. They are used
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to control the clock phases, "ciu-sample" is required for tuning high-
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speed modes.
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* rockchip,default-sample-phase: The default phase to set ciu-sample at
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probing, low speeds or in case where all phases work at tuning time.
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If not specified 0 deg will be used.
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* rockchip,desired-num-phases: The desired number of times that the host
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execute tuning when needed. If not specified, the host will do tuning
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for 360 times, namely tuning for each degree.
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Example:
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rkdwmmc0@12200000 {
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compatible = "rockchip,rk3288-dw-mshc";
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reg = <0x12200000 0x1000>;
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interrupts = <0 75 0>;
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#address-cells = <1>;
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#size-cells = <0>;
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};
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123
Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
Normal file
123
Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
Normal file
@ -0,0 +1,123 @@
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# SPDX-License-Identifier: GPL-2.0
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/mmc/rockchip-dw-mshc.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Rockchip designware mobile storage host controller device tree bindings
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description:
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Rockchip uses the Synopsys designware mobile storage host controller
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to interface a SoC with storage medium such as eMMC or SD/MMC cards.
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This file documents the combined properties for the core Synopsys dw mshc
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controller that are not already included in the synopsys-dw-mshc-common.yaml
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file and the Rockchip specific extensions.
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allOf:
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- $ref: "synopsys-dw-mshc-common.yaml#"
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maintainers:
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- Heiko Stuebner <heiko@sntech.de>
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# Everything else is described in the common file
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properties:
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compatible:
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oneOf:
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# for Rockchip RK2928 and before RK3288
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- const: rockchip,rk2928-dw-mshc
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# for Rockchip RK3288
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- const: rockchip,rk3288-dw-mshc
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- items:
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- enum:
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# for Rockchip PX30
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- rockchip,px30-dw-mshc
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# for Rockchip RK3036
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- rockchip,rk3036-dw-mshc
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# for Rockchip RK322x
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- rockchip,rk3228-dw-mshc
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# for Rockchip RK3328
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- rockchip,rk3328-dw-mshc
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# for Rockchip RK3368
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- rockchip,rk3368-dw-mshc
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# for Rockchip RK3399
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- rockchip,rk3399-dw-mshc
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# for Rockchip RV1108
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- rockchip,rv1108-dw-mshc
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- const: rockchip,rk3288-dw-mshc
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reg:
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maxItems: 1
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interrupts:
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maxItems: 1
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clocks:
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minItems: 2
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maxItems: 4
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description:
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Handle to "biu" and "ciu" clocks for the bus interface unit clock and
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the card interface unit clock. If "ciu-drive" and "ciu-sample" are
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specified in clock-names, it should also contain
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handles to these clocks.
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clock-names:
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minItems: 2
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items:
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- const: biu
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- const: ciu
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- const: ciu-drive
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- const: ciu-sample
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description:
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Apart from the clock-names "biu" and "ciu" two more clocks
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"ciu-drive" and "ciu-sample" are supported. They are used
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to control the clock phases, "ciu-sample" is required for tuning
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high speed modes.
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rockchip,default-sample-phase:
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allOf:
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- $ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 360
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default: 0
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description:
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The default phase to set "ciu-sample" at probing,
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low speeds or in case where all phases work at tuning time.
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If not specified 0 deg will be used.
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rockchip,desired-num-phases:
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allOf:
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- $ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 360
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default: 360
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description:
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The desired number of times that the host execute tuning when needed.
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If not specified, the host will do tuning for 360 times,
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namely tuning for each degree.
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required:
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- compatible
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- reg
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- interrupts
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- clocks
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- clock-names
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examples:
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- |
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#include <dt-bindings/clock/rk3288-cru.h>
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#include <dt-bindings/interrupt-controller/arm-gic.h>
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#include <dt-bindings/interrupt-controller/irq.h>
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sdmmc: mmc@ff0c0000 {
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compatible = "rockchip,rk3288-dw-mshc";
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reg = <0x0 0xff0c0000 0x0 0x4000>;
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interrupts = <GIC_SPI 32 IRQ_TYPE_LEVEL_HIGH>;
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clocks = <&cru HCLK_SDMMC>, <&cru SCLK_SDMMC>,
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<&cru SCLK_SDMMC_DRV>, <&cru SCLK_SDMMC_SAMPLE>;
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clock-names = "biu", "ciu", "ciu-drive", "ciu-sample";
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resets = <&cru SRST_MMC0>;
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reset-names = "reset";
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fifo-depth = <0x100>;
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max-frequency = <150000000>;
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};
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...
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@ -2240,6 +2240,7 @@ L: linux-rockchip@lists.infradead.org
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T: git git://git.kernel.org/pub/scm/linux/kernel/git/mmind/linux-rockchip.git
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S: Maintained
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F: Documentation/devicetree/bindings/i2c/i2c-rk3x.txt
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F: Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
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F: arch/arm/boot/dts/rk3*
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F: arch/arm/boot/dts/rv1108*
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F: arch/arm/mach-rockchip/
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