[PATCH v2 0/4] mmc: samsung,exynos-dw-mshc: convert to dtschema

[PATCH v2 0/4] mmc: samsung,exynos-dw-mshc: convert to dtschema

[Krzysztof Kozlowski]

Hi,

I will take the DTS patches via Samsung SoC.  The MMC dt-bindings patch
probably via MMC or Rob's tree.

Changes since v1
================
1. Add patch #4 documenting missing compatible.
2. Add Rb tags.

Best regards,
Krzysztof

Krzysztof Kozlowski (4):
  ARM: dts: exynos: align MMC node name with dtschema
  arm64: dts: exynos: align MMC node name with dtschema
  dt-bindings: mmc: samsung,exynos-dw-mshc: convert to dtschema
  dt-bindings: mmc: samsung,exynos-dw-mshc: document Exynos5420 SMU

 .../bindings/mmc/exynos-dw-mshc.txt           |  94 ----------
 .../bindings/mmc/samsung,exynos-dw-mshc.yaml  | 160 ++++++++++++++++++
 arch/arm/boot/dts/exynos3250.dtsi             |   6 +-
 arch/arm64/boot/dts/exynos/exynos5433.dtsi    |   6 +-
 4 files changed, 166 insertions(+), 100 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
 create mode 100644 Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml

-- 
2.34.1

[PATCH v2 1/4] ARM: dts: exynos: align MMC node name with dtschema

[Krzysztof Kozlowski]

The node names should be generic and MMC controller dtschema expects
"mmc".

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
---
 arch/arm/boot/dts/exynos3250.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/exynos3250.dtsi b/arch/arm/boot/dts/exynos3250.dtsi
index 78dad233ff34..326b9e0ed8d3 100644
--- a/arch/arm/boot/dts/exynos3250.dtsi
+++ b/arch/arm/boot/dts/exynos3250.dtsi
@@ -376,7 +376,7 @@ hsotg: hsotg@12480000 {
 			status = "disabled";
 		};
 
-		mshc_0: mshc@12510000 {
+		mshc_0: mmc@12510000 {
 			compatible = "samsung,exynos5420-dw-mshc";
 			reg = <0x12510000 0x1000>;
 			interrupts = <GIC_SPI 142 IRQ_TYPE_LEVEL_HIGH>;
@@ -388,7 +388,7 @@ mshc_0: mshc@12510000 {
 			status = "disabled";
 		};
 
-		mshc_1: mshc@12520000 {
+		mshc_1: mmc@12520000 {
 			compatible = "samsung,exynos5420-dw-mshc";
 			reg = <0x12520000 0x1000>;
 			interrupts = <GIC_SPI 143 IRQ_TYPE_LEVEL_HIGH>;
@@ -400,7 +400,7 @@ mshc_1: mshc@12520000 {
 			status = "disabled";
 		};
 
-		mshc_2: mshc@12530000 {
+		mshc_2: mmc@12530000 {
 			compatible = "samsung,exynos5250-dw-mshc";
 			reg = <0x12530000 0x1000>;
 			interrupts = <GIC_SPI 144 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.34.1

[PATCH v2 2/4] arm64: dts: exynos: align MMC node name with dtschema

[Krzysztof Kozlowski]

The node names should be generic and MMC controller dtschema expects
"mmc".

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Alim Akhtar <alim.akhtar@samsung.com>
---
 arch/arm64/boot/dts/exynos/exynos5433.dtsi | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/exynos/exynos5433.dtsi b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
index 75b548e495a0..bd6a354b9cb5 100644
--- a/arch/arm64/boot/dts/exynos/exynos5433.dtsi
+++ b/arch/arm64/boot/dts/exynos/exynos5433.dtsi
@@ -1820,7 +1820,7 @@ usbhost_dwc3: usb@15a00000 {
 			};
 		};
 
-		mshc_0: mshc@15540000 {
+		mshc_0: mmc@15540000 {
 			compatible = "samsung,exynos7-dw-mshc-smu";
 			interrupts = <GIC_SPI 225 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
@@ -1833,7 +1833,7 @@ mshc_0: mshc@15540000 {
 			status = "disabled";
 		};
 
-		mshc_1: mshc@15550000 {
+		mshc_1: mmc@15550000 {
 			compatible = "samsung,exynos7-dw-mshc-smu";
 			interrupts = <GIC_SPI 226 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
@@ -1846,7 +1846,7 @@ mshc_1: mshc@15550000 {
 			status = "disabled";
 		};
 
-		mshc_2: mshc@15560000 {
+		mshc_2: mmc@15560000 {
 			compatible = "samsung,exynos7-dw-mshc-smu";
 			interrupts = <GIC_SPI 227 IRQ_TYPE_LEVEL_HIGH>;
 			#address-cells = <1>;
-- 
2.34.1

[PATCH v2 3/4] dt-bindings: mmc: samsung,exynos-dw-mshc: convert to dtschema

[Krzysztof Kozlowski]

Convert the Samsung Exynos SoC specific extensions to the Synopsys
Designware Mobile Storage Host Controller to DT schema.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../bindings/mmc/exynos-dw-mshc.txt           |  94 -----------
 .../bindings/mmc/samsung,exynos-dw-mshc.yaml  | 159 ++++++++++++++++++
 2 files changed, 159 insertions(+), 94 deletions(-)
 delete mode 100644 Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
 create mode 100644 Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml

diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
deleted file mode 100644
index 753e9d7d8956..000000000000
--- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
+++ /dev/null
@@ -1,94 +0,0 @@
-* Samsung Exynos 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 Samsung Exynos specific
-extensions to the Synopsys Designware Mobile Storage Host Controller.
-
-Required Properties:
-
-* compatible: should be
-	- "samsung,exynos4210-dw-mshc": for controllers with Samsung Exynos4210
-	  specific extensions.
-	- "samsung,exynos4412-dw-mshc": for controllers with Samsung Exynos4412
-	  specific extensions.
-	- "samsung,exynos5250-dw-mshc": for controllers with Samsung Exynos5250
-	  specific extensions.
-	- "samsung,exynos5420-dw-mshc": for controllers with Samsung Exynos5420
-	  specific extensions.
-	- "samsung,exynos7-dw-mshc": for controllers with Samsung Exynos7
-	  specific extensions.
-	- "samsung,exynos7-dw-mshc-smu": for controllers with Samsung Exynos7
-	  specific extensions having an SMU.
-	- "axis,artpec8-dw-mshc": for controllers with ARTPEC-8 specific
-	  extensions.
-
-* samsung,dw-mshc-ciu-div: Specifies the divider value for the card interface
-  unit (ciu) clock. This property is applicable only for Exynos5 SoC's and
-  ignored for Exynos4 SoC's. The valid range of divider value is 0 to 7.
-
-* samsung,dw-mshc-sdr-timing: Specifies the value of CIU clock phase shift value
-  in transmit mode and CIU clock phase shift value in receive mode for single
-  data rate mode operation. Refer notes below for the order of the cells and the
-  valid values.
-
-* samsung,dw-mshc-ddr-timing: Specifies the value of CUI clock phase shift value
-  in transmit mode and CIU clock phase shift value in receive mode for double
-  data rate mode operation. Refer notes below for the order of the cells and the
-  valid values.
-* samsung,dw-mshc-hs400-timing: Specifies the value of CIU TX and RX clock phase
-  shift value for hs400 mode operation.
-
-  Notes for the sdr-timing and ddr-timing values:
-
-    The order of the cells should be
-      - First Cell: CIU clock phase shift value for tx mode.
-      - Second Cell: CIU clock phase shift value for rx mode.
-
-    Valid values for SDR and DDR CIU clock timing for Exynos5250:
-      - valid value for tx phase shift and rx phase shift is 0 to 7.
-      - when CIU clock divider value is set to 3, all possible 8 phase shift
-        values can be used.
-      - if CIU clock divider value is 0 (that is divide by 1), both tx and rx
-        phase shift clocks should be 0.
-
-* samsung,read-strobe-delay: RCLK (Data strobe) delay to control HS400 mode
-  (Latency value for delay line in Read path)
-
-Required properties for a slot (Deprecated - Recommend to use one slot per host):
-
-* gpios: specifies a list of gpios used for command, clock and data bus. The
-  first gpio is the command line and the second gpio is the clock line. The
-  rest of the gpios (depending on the bus-width property) are the data lines in
-  no particular order. The format of the gpio specifier depends on the gpio
-  controller.
-(Deprecated - Refer to Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt)
-
-Example:
-
-  The MSHC controller node can be split into two portions, SoC specific and
-  board specific portions as listed below.
-
-	dwmmc0@12200000 {
-		compatible = "samsung,exynos5250-dw-mshc";
-		reg = <0x12200000 0x1000>;
-		interrupts = <0 75 0>;
-		#address-cells = <1>;
-		#size-cells = <0>;
-	};
-
-	dwmmc0@12200000 {
-		cap-mmc-highspeed;
-		cap-sd-highspeed;
-		broken-cd;
-		fifo-depth = <0x80>;
-		card-detect-delay = <200>;
-		samsung,dw-mshc-ciu-div = <3>;
-		samsung,dw-mshc-sdr-timing = <2 3>;
-		samsung,dw-mshc-ddr-timing = <1 2>;
-		samsung,dw-mshc-hs400-timing = <0 2>;
-		samsung,read-strobe-delay = <90>;
-		bus-width = <8>;
-	};
diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
new file mode 100644
index 000000000000..80c557e938a2
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
@@ -0,0 +1,159 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mmc/samsung,exynos-dw-mshc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title:
+  Samsung Exynos SoC specific extensions to the Synopsys Designware Mobile
+  Storage Host Controller
+
+maintainers:
+  - Jaehoon Chung <jh80.chung@samsung.com>
+  - Krzysztof Kozlowski <krzk@kernel.org>
+
+properties:
+  compatible:
+    enum:
+      - samsung,exynos4210-dw-mshc
+      - samsung,exynos4412-dw-mshc
+      - samsung,exynos5250-dw-mshc
+      - samsung,exynos5420-dw-mshc
+      - samsung,exynos7-dw-mshc
+      - samsung,exynos7-dw-mshc-smu
+      - axis,artpec8-dw-mshc
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    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
+
+  samsung,dw-mshc-ciu-div:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    minimum: 0
+    maximum: 7
+    description:
+      The divider value for the card interface unit (ciu) clock.
+
+  samsung,dw-mshc-ddr-timing:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      - description: CIU clock phase shift value for tx mode
+        minimum: 0
+        maximum: 7
+      - description: CIU clock phase shift value for rx mode
+        minimum: 0
+        maximum: 7
+    description:
+      The value of CUI clock phase shift value in transmit mode and CIU clock
+      phase shift value in receive mode for double data rate mode operation.
+      See also samsung,dw-mshc-hs400-timing property.
+
+  samsung,dw-mshc-hs400-timing:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      - description: CIU clock phase shift value for tx mode
+        minimum: 0
+        maximum: 7
+      - description: CIU clock phase shift value for rx mode
+        minimum: 0
+        maximum: 7
+    description: |
+      The value of CIU TX and RX clock phase shift value for HS400 mode
+      operation.
+      Valid values for SDR and DDR CIU clock timing::
+        - valid value for tx phase shift and rx phase shift is 0 to 7.
+        - when CIU clock divider value is set to 3, all possible 8 phase shift
+          values can be used.
+        - if CIU clock divider value is 0 (that is divide by 1), both tx and rx
+          phase shift clocks should be 0.
+      If missing, values from samsung,dw-mshc-ddr-timing property are used.
+
+  samsung,dw-mshc-sdr-timing:
+    $ref: /schemas/types.yaml#/definitions/uint32-array
+    items:
+      - description: CIU clock phase shift value for tx mode
+        minimum: 0
+        maximum: 7
+      - description: CIU clock phase shift value for rx mode
+        minimum: 0
+        maximum: 7
+    description:
+      The value of CIU clock phase shift value in transmit mode and CIU clock
+      phase shift value in receive mode for single data rate mode operation.
+      See also samsung,dw-mshc-hs400-timing property.
+
+  samsung,read-strobe-delay:
+    $ref: /schemas/types.yaml#/definitions/uint32
+    description:
+      RCLK (Data strobe) delay to control HS400 mode (Latency value for delay
+      line in Read path). If missing, default from hardware is used.
+
+required:
+  - compatible
+  - reg
+  - interrupts
+  - clocks
+  - clock-names
+  - samsung,dw-mshc-ddr-timing
+  - samsung,dw-mshc-sdr-timing
+
+allOf:
+  - $ref: "synopsys-dw-mshc-common.yaml#"
+  - if:
+      properties:
+        compatible:
+          contains:
+            enum:
+              - samsung,exynos5250-dw-mshc
+              - samsung,exynos5420-dw-mshc
+              - samsung,exynos7-dw-mshc
+              - samsung,exynos7-dw-mshc-smu
+              - axis,artpec8-dw-mshc
+    then:
+      required:
+        - samsung,dw-mshc-ciu-div
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/exynos5420.h>
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+
+    mmc@12220000 {
+        compatible = "samsung,exynos5420-dw-mshc";
+        interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
+        #address-cells = <1>;
+        #size-cells = <0>;
+        reg = <0x12220000 0x1000>;
+        clocks = <&clock CLK_MMC2>, <&clock CLK_SCLK_MMC2>;
+        clock-names = "biu", "ciu";
+        fifo-depth = <0x40>;
+        card-detect-delay = <200>;
+        samsung,dw-mshc-ciu-div = <3>;
+        samsung,dw-mshc-sdr-timing = <0 4>;
+        samsung,dw-mshc-ddr-timing = <0 2>;
+        pinctrl-names = "default";
+        pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_wp &sd2_bus1 &sd2_bus4>;
+        bus-width = <4>;
+        cap-sd-highspeed;
+        max-frequency = <200000000>;
+        vmmc-supply = <&ldo19_reg>;
+        vqmmc-supply = <&ldo13_reg>;
+        sd-uhs-sdr50;
+        sd-uhs-sdr104;
+        sd-uhs-ddr50;
+    };
-- 
2.34.1

[PATCH v2 4/4] dt-bindings: mmc: samsung,exynos-dw-mshc: document Exynos5420 SMU

[Krzysztof Kozlowski]

Document the compatible for Samsung Exynos5420 SoC Synopsys Designware
MSHC with SMU, already used in DTS and driver.

Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
---
 .../devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml          | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
index 80c557e938a2..fdaa18481aa0 100644
--- a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
+++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
@@ -19,6 +19,7 @@ properties:
       - samsung,exynos4412-dw-mshc
       - samsung,exynos5250-dw-mshc
       - samsung,exynos5420-dw-mshc
+      - samsung,exynos5420-dw-mshc-smu
       - samsung,exynos7-dw-mshc
       - samsung,exynos7-dw-mshc-smu
       - axis,artpec8-dw-mshc
-- 
2.34.1

Re: [PATCH v2 3/4] dt-bindings: mmc: samsung,exynos-dw-mshc: convert to dtschema

[Rob Herring]

On Sun, 05 Jun 2022 18:37:09 +0200, Krzysztof Kozlowski wrote:
> Convert the Samsung Exynos SoC specific extensions to the Synopsys
> Designware Mobile Storage Host Controller to DT schema.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>  .../bindings/mmc/exynos-dw-mshc.txt           |  94 -----------
>  .../bindings/mmc/samsung,exynos-dw-mshc.yaml  | 159 ++++++++++++++++++
>  2 files changed, 159 insertions(+), 94 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
>  create mode 100644 Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> 

Reviewed-by: Rob Herring <robh@kernel.org>

Re: [PATCH v2 4/4] dt-bindings: mmc: samsung,exynos-dw-mshc: document Exynos5420 SMU

[Rob Herring]

On Sun, 05 Jun 2022 18:37:10 +0200, Krzysztof Kozlowski wrote:
> Document the compatible for Samsung Exynos5420 SoC Synopsys Designware
> MSHC with SMU, already used in DTS and driver.
> 
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> ---
>  .../devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml          | 1 +
>  1 file changed, 1 insertion(+)
> 

Reviewed-by: Rob Herring <robh@kernel.org>

Re: (subset) [PATCH v2 1/4] ARM: dts: exynos: align MMC node name with dtschema

[Krzysztof Kozlowski]

On Sun, 5 Jun 2022 18:37:07 +0200, Krzysztof Kozlowski wrote:
> The node names should be generic and MMC controller dtschema expects
> "mmc".
> 
> 

Applied, thanks!

[1/4] ARM: dts: exynos: align MMC node name with dtschema
      https://git.kernel.org/krzk/linux/c/a07cadf80c85a3ee6a1688fafb71b8c5cabfa904

Best regards,
-- 
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Re: (subset) [PATCH v2 2/4] arm64: dts: exynos: align MMC node name with dtschema

[Krzysztof Kozlowski]

On Sun, 5 Jun 2022 18:37:08 +0200, Krzysztof Kozlowski wrote:
> The node names should be generic and MMC controller dtschema expects
> "mmc".
> 
> 

Applied, thanks!

[2/4] arm64: dts: exynos: align MMC node name with dtschema
      https://git.kernel.org/krzk/linux/c/2164784a4b2700d1929854b5ec6b2169ff449814

Best regards,
-- 
Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Re: [PATCH v2 3/4] dt-bindings: mmc: samsung,exynos-dw-mshc: convert to dtschema

[Ulf Hansson]

On Sun, 5 Jun 2022 at 18:37, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> Convert the Samsung Exynos SoC specific extensions to the Synopsys
> Designware Mobile Storage Host Controller to DT schema.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  .../bindings/mmc/exynos-dw-mshc.txt           |  94 -----------
>  .../bindings/mmc/samsung,exynos-dw-mshc.yaml  | 159 ++++++++++++++++++
>  2 files changed, 159 insertions(+), 94 deletions(-)
>  delete mode 100644 Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
>  create mode 100644 Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
>
> diff --git a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt b/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> deleted file mode 100644
> index 753e9d7d8956..000000000000
> --- a/Documentation/devicetree/bindings/mmc/exynos-dw-mshc.txt
> +++ /dev/null
> @@ -1,94 +0,0 @@
> -* Samsung Exynos 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 Samsung Exynos specific
> -extensions to the Synopsys Designware Mobile Storage Host Controller.
> -
> -Required Properties:
> -
> -* compatible: should be
> -       - "samsung,exynos4210-dw-mshc": for controllers with Samsung Exynos4210
> -         specific extensions.
> -       - "samsung,exynos4412-dw-mshc": for controllers with Samsung Exynos4412
> -         specific extensions.
> -       - "samsung,exynos5250-dw-mshc": for controllers with Samsung Exynos5250
> -         specific extensions.
> -       - "samsung,exynos5420-dw-mshc": for controllers with Samsung Exynos5420
> -         specific extensions.
> -       - "samsung,exynos7-dw-mshc": for controllers with Samsung Exynos7
> -         specific extensions.
> -       - "samsung,exynos7-dw-mshc-smu": for controllers with Samsung Exynos7
> -         specific extensions having an SMU.
> -       - "axis,artpec8-dw-mshc": for controllers with ARTPEC-8 specific
> -         extensions.
> -
> -* samsung,dw-mshc-ciu-div: Specifies the divider value for the card interface
> -  unit (ciu) clock. This property is applicable only for Exynos5 SoC's and
> -  ignored for Exynos4 SoC's. The valid range of divider value is 0 to 7.
> -
> -* samsung,dw-mshc-sdr-timing: Specifies the value of CIU clock phase shift value
> -  in transmit mode and CIU clock phase shift value in receive mode for single
> -  data rate mode operation. Refer notes below for the order of the cells and the
> -  valid values.
> -
> -* samsung,dw-mshc-ddr-timing: Specifies the value of CUI clock phase shift value
> -  in transmit mode and CIU clock phase shift value in receive mode for double
> -  data rate mode operation. Refer notes below for the order of the cells and the
> -  valid values.
> -* samsung,dw-mshc-hs400-timing: Specifies the value of CIU TX and RX clock phase
> -  shift value for hs400 mode operation.
> -
> -  Notes for the sdr-timing and ddr-timing values:
> -
> -    The order of the cells should be
> -      - First Cell: CIU clock phase shift value for tx mode.
> -      - Second Cell: CIU clock phase shift value for rx mode.
> -
> -    Valid values for SDR and DDR CIU clock timing for Exynos5250:
> -      - valid value for tx phase shift and rx phase shift is 0 to 7.
> -      - when CIU clock divider value is set to 3, all possible 8 phase shift
> -        values can be used.
> -      - if CIU clock divider value is 0 (that is divide by 1), both tx and rx
> -        phase shift clocks should be 0.
> -
> -* samsung,read-strobe-delay: RCLK (Data strobe) delay to control HS400 mode
> -  (Latency value for delay line in Read path)
> -
> -Required properties for a slot (Deprecated - Recommend to use one slot per host):
> -
> -* gpios: specifies a list of gpios used for command, clock and data bus. The
> -  first gpio is the command line and the second gpio is the clock line. The
> -  rest of the gpios (depending on the bus-width property) are the data lines in
> -  no particular order. The format of the gpio specifier depends on the gpio
> -  controller.
> -(Deprecated - Refer to Documentation/devicetree/bindings/pinctrl/samsung-pinctrl.txt)
> -
> -Example:
> -
> -  The MSHC controller node can be split into two portions, SoC specific and
> -  board specific portions as listed below.
> -
> -       dwmmc0@12200000 {
> -               compatible = "samsung,exynos5250-dw-mshc";
> -               reg = <0x12200000 0x1000>;
> -               interrupts = <0 75 0>;
> -               #address-cells = <1>;
> -               #size-cells = <0>;
> -       };
> -
> -       dwmmc0@12200000 {
> -               cap-mmc-highspeed;
> -               cap-sd-highspeed;
> -               broken-cd;
> -               fifo-depth = <0x80>;
> -               card-detect-delay = <200>;
> -               samsung,dw-mshc-ciu-div = <3>;
> -               samsung,dw-mshc-sdr-timing = <2 3>;
> -               samsung,dw-mshc-ddr-timing = <1 2>;
> -               samsung,dw-mshc-hs400-timing = <0 2>;
> -               samsung,read-strobe-delay = <90>;
> -               bus-width = <8>;
> -       };
> diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> new file mode 100644
> index 000000000000..80c557e938a2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> @@ -0,0 +1,159 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mmc/samsung,exynos-dw-mshc.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title:
> +  Samsung Exynos SoC specific extensions to the Synopsys Designware Mobile
> +  Storage Host Controller
> +
> +maintainers:
> +  - Jaehoon Chung <jh80.chung@samsung.com>
> +  - Krzysztof Kozlowski <krzk@kernel.org>
> +
> +properties:
> +  compatible:
> +    enum:
> +      - samsung,exynos4210-dw-mshc
> +      - samsung,exynos4412-dw-mshc
> +      - samsung,exynos5250-dw-mshc
> +      - samsung,exynos5420-dw-mshc
> +      - samsung,exynos7-dw-mshc
> +      - samsung,exynos7-dw-mshc-smu
> +      - axis,artpec8-dw-mshc
> +
> +  reg:
> +    maxItems: 1
> +
> +  interrupts:
> +    maxItems: 1
> +
> +  clocks:
> +    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
> +
> +  samsung,dw-mshc-ciu-div:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    minimum: 0
> +    maximum: 7
> +    description:
> +      The divider value for the card interface unit (ciu) clock.
> +
> +  samsung,dw-mshc-ddr-timing:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    items:
> +      - description: CIU clock phase shift value for tx mode
> +        minimum: 0
> +        maximum: 7
> +      - description: CIU clock phase shift value for rx mode
> +        minimum: 0
> +        maximum: 7
> +    description:
> +      The value of CUI clock phase shift value in transmit mode and CIU clock
> +      phase shift value in receive mode for double data rate mode operation.
> +      See also samsung,dw-mshc-hs400-timing property.
> +
> +  samsung,dw-mshc-hs400-timing:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    items:
> +      - description: CIU clock phase shift value for tx mode
> +        minimum: 0
> +        maximum: 7
> +      - description: CIU clock phase shift value for rx mode
> +        minimum: 0
> +        maximum: 7
> +    description: |
> +      The value of CIU TX and RX clock phase shift value for HS400 mode
> +      operation.
> +      Valid values for SDR and DDR CIU clock timing::
> +        - valid value for tx phase shift and rx phase shift is 0 to 7.
> +        - when CIU clock divider value is set to 3, all possible 8 phase shift
> +          values can be used.
> +        - if CIU clock divider value is 0 (that is divide by 1), both tx and rx
> +          phase shift clocks should be 0.
> +      If missing, values from samsung,dw-mshc-ddr-timing property are used.
> +
> +  samsung,dw-mshc-sdr-timing:
> +    $ref: /schemas/types.yaml#/definitions/uint32-array
> +    items:
> +      - description: CIU clock phase shift value for tx mode
> +        minimum: 0
> +        maximum: 7
> +      - description: CIU clock phase shift value for rx mode
> +        minimum: 0
> +        maximum: 7
> +    description:
> +      The value of CIU clock phase shift value in transmit mode and CIU clock
> +      phase shift value in receive mode for single data rate mode operation.
> +      See also samsung,dw-mshc-hs400-timing property.
> +
> +  samsung,read-strobe-delay:
> +    $ref: /schemas/types.yaml#/definitions/uint32
> +    description:
> +      RCLK (Data strobe) delay to control HS400 mode (Latency value for delay
> +      line in Read path). If missing, default from hardware is used.
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - clocks
> +  - clock-names
> +  - samsung,dw-mshc-ddr-timing
> +  - samsung,dw-mshc-sdr-timing
> +
> +allOf:
> +  - $ref: "synopsys-dw-mshc-common.yaml#"
> +  - if:
> +      properties:
> +        compatible:
> +          contains:
> +            enum:
> +              - samsung,exynos5250-dw-mshc
> +              - samsung,exynos5420-dw-mshc
> +              - samsung,exynos7-dw-mshc
> +              - samsung,exynos7-dw-mshc-smu
> +              - axis,artpec8-dw-mshc
> +    then:
> +      required:
> +        - samsung,dw-mshc-ciu-div
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/exynos5420.h>
> +    #include <dt-bindings/interrupt-controller/arm-gic.h>
> +
> +    mmc@12220000 {
> +        compatible = "samsung,exynos5420-dw-mshc";
> +        interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
> +        #address-cells = <1>;
> +        #size-cells = <0>;
> +        reg = <0x12220000 0x1000>;
> +        clocks = <&clock CLK_MMC2>, <&clock CLK_SCLK_MMC2>;
> +        clock-names = "biu", "ciu";
> +        fifo-depth = <0x40>;
> +        card-detect-delay = <200>;
> +        samsung,dw-mshc-ciu-div = <3>;
> +        samsung,dw-mshc-sdr-timing = <0 4>;
> +        samsung,dw-mshc-ddr-timing = <0 2>;
> +        pinctrl-names = "default";
> +        pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_wp &sd2_bus1 &sd2_bus4>;
> +        bus-width = <4>;
> +        cap-sd-highspeed;
> +        max-frequency = <200000000>;
> +        vmmc-supply = <&ldo19_reg>;
> +        vqmmc-supply = <&ldo13_reg>;
> +        sd-uhs-sdr50;
> +        sd-uhs-sdr104;
> +        sd-uhs-ddr50;
> +    };
> --
> 2.34.1
>

Re: [PATCH v2 4/4] dt-bindings: mmc: samsung,exynos-dw-mshc: document Exynos5420 SMU

[Ulf Hansson]

On Sun, 5 Jun 2022 at 18:37, Krzysztof Kozlowski
<krzysztof.kozlowski@linaro.org> wrote:
>
> Document the compatible for Samsung Exynos5420 SoC Synopsys Designware
> MSHC with SMU, already used in DTS and driver.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>

Applied for next, thanks!

Kind regards
Uffe


> ---
>  .../devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml          | 1 +
>  1 file changed, 1 insertion(+)
>
> diff --git a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> index 80c557e938a2..fdaa18481aa0 100644
> --- a/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> +++ b/Documentation/devicetree/bindings/mmc/samsung,exynos-dw-mshc.yaml
> @@ -19,6 +19,7 @@ properties:
>        - samsung,exynos4412-dw-mshc
>        - samsung,exynos5250-dw-mshc
>        - samsung,exynos5420-dw-mshc
> +      - samsung,exynos5420-dw-mshc-smu
>        - samsung,exynos7-dw-mshc
>        - samsung,exynos7-dw-mshc-smu
>        - axis,artpec8-dw-mshc
> --
> 2.34.1
>