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Date: Tue, 14 Jan 2020 22:38:09 +0100
From: Johan Jonker <jbx6244@...il.com>
To: ulf.hansson@...aro.org
Cc: robh+dt@...nel.org, mark.rutland@....com, heiko@...ech.de,
linux-mmc@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
linux-rockchip@...ts.infradead.org
Subject: [RFC PATCH v1 3/3] dt-bindings: mmc: convert rockchip dw-mshc bindings to yaml
Convert the Rockchip designware mobile storage host controller
device tree bindings to yaml.
Add maintainer.
Signed-off-by: Johan Jonker <jbx6244@...il.com>
---
.../devicetree/bindings/mmc/rockchip-dw-mshc.txt | 49 --------
.../devicetree/bindings/mmc/rockchip-dw-mshc.yaml | 137 +++++++++++++++++++++
MAINTAINERS | 1 +
3 files changed, 138 insertions(+), 49 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
create mode 100644 Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
diff --git a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
deleted file mode 100644
index 6f629b12b..000000000
--- a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.txt
+++ /dev/null
@@ -1,49 +0,0 @@
-* 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@...00000 {
- compatible = "rockchip,rk3288-dw-mshc";
- reg = <0x12200000 0x1000>;
- interrupts = <0 75 0>;
- #address-cells = <1>;
- #size-cells = <0>;
- };
diff --git a/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
new file mode 100644
index 000000000..da16916b7
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/rockchip-dw-mshc.yaml
@@ -0,0 +1,137 @@
+# 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@...ech.de>
+
+properties:
+ compatible:
+ oneOf:
+ # for Rockchip PX30
+ - items:
+ - const: rockchip,px30-dw-mshc
+ - const: rockchip,rk3288-dw-mshc
+ # for Rockchip RK2928 and before RK3288
+ - const: rockchip,rk2928-dw-mshc
+ # for Rockchip RK3036
+ - items:
+ - const: rockchip,rk3036-dw-mshc
+ - const: rockchip,rk3288-dw-mshc
+ # for Rockchip RK322x
+ - items:
+ - const: rockchip,rk3228-dw-mshc
+ - const: rockchip,rk3288-dw-mshc
+ # for Rockchip RK3288
+ - const: rockchip,rk3288-dw-mshc
+ # for Rockchip RK3328
+ - items:
+ - const: rockchip,rk3328-dw-mshc
+ - const: rockchip,rk3288-dw-mshc
+ # for Rockchip RK3368
+ - items:
+ - const: rockchip,rk3368-dw-mshc
+ - const: rockchip,rk3288-dw-mshc
+ # for Rockchip RK3399
+ - items:
+ - const: rockchip,rk3399-dw-mshc
+ - const: rockchip,rk3288-dw-mshc
+ # for Rockchip RV1108
+ - items:
+ - const: 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:
+ oneOf:
+ - items:
+ - const: biu
+ - const: ciu
+ - 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: dwmmc@...c0000 {
+ 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>;
+ };
+
+...
diff --git a/MAINTAINERS b/MAINTAINERS
index d6ad01d71..1b16c0fdf 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -2240,6 +2240,7 @@ L: linux-rockchip@...ts.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/
--
2.11.0
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