diff mbox

[12/14] DEVICETREE: Add bindings for PIC32 SDHC host controller

Message ID 1448065205-15762-13-git-send-email-joshua.henderson@microchip.com
State Changes Requested, archived
Headers show

Commit Message

Joshua Henderson Nov. 21, 2015, 12:17 a.m. UTC
From: Andrei Pistirica <andrei.pistirica@microchip.com>

Document the devicetree bindings for the SDHC peripheral found on
Microchip PIC32 class devices.

Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com>
Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
---
 .../devicetree/bindings/mmc/sdhci-pic32.txt        |   24 ++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-pic32.txt

Comments

Sergei Shtylyov Nov. 21, 2015, 3:19 p.m. UTC | #1
Hello.

On 11/21/2015 3:17 AM, Joshua Henderson wrote:

> From: Andrei Pistirica <andrei.pistirica@microchip.com>
>
> Document the devicetree bindings for the SDHC peripheral found on
> Microchip PIC32 class devices.
>
> Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com>
> Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
> ---
>   .../devicetree/bindings/mmc/sdhci-pic32.txt        |   24 ++++++++++++++++++++
>   1 file changed, 24 insertions(+)
>   create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
>
> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
> new file mode 100644
> index 0000000..f16388c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
> @@ -0,0 +1,24 @@
> +* Microchip PIC32 SDHCI Controller
> +
> +This file documents differences between the core properties in mmc.txt
> +and the properties used by the sdhci-pic32 driver.
> +
> +Required properties:
> +- compatible: Should be "microchip,pic32-sdhci"
> +- reg: Should contain registers location and length
> +- interrupts: Should contain interrupt
> +- pinctrl: Should contain pinctrl for data and command lines

    This is a required prop, yet the example doesn't contain it?

> +
> +Optional properties:
> +- no-1-8-v: 1.8V voltage selection not supported
> +- piomode: disable DMA support
> +
> +Example:
> +
> +	sdhci@1f8ec000 {
> +		compatible = "microchip,pic32-sdhci";
> +		reg = <0x1f8ec000 0x100>;
> +		interrupts = <SDHC_EVENT DEFAULT_INT_PRI IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&REFCLKO4>, <&PBCLK5>;
> +		clock-names = "base_clk", "sys_clk";

    The "clocks" and "clock-names" props are not documented.

[...]

MBR, Sergei

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Rob Herring (Arm) Nov. 22, 2015, 9:57 p.m. UTC | #2
On Fri, Nov 20, 2015 at 05:17:24PM -0700, Joshua Henderson wrote:
> From: Andrei Pistirica <andrei.pistirica@microchip.com>
> 
> Document the devicetree bindings for the SDHC peripheral found on
> Microchip PIC32 class devices.
> 
> Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com>
> Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
> ---
>  .../devicetree/bindings/mmc/sdhci-pic32.txt        |   24 ++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
> 
> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
> new file mode 100644
> index 0000000..f16388c
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
> @@ -0,0 +1,24 @@
> +* Microchip PIC32 SDHCI Controller
> +
> +This file documents differences between the core properties in mmc.txt
> +and the properties used by the sdhci-pic32 driver.
> +
> +Required properties:
> +- compatible: Should be "microchip,pic32-sdhci"
> +- reg: Should contain registers location and length
> +- interrupts: Should contain interrupt
> +- pinctrl: Should contain pinctrl for data and command lines
> +
> +Optional properties:
> +- no-1-8-v: 1.8V voltage selection not supported

There's a standard property for this one.

> +- piomode: disable DMA support

Proably this one too IIRC.

> +
> +Example:
> +
> +	sdhci@1f8ec000 {
> +		compatible = "microchip,pic32-sdhci";
> +		reg = <0x1f8ec000 0x100>;
> +		interrupts = <SDHC_EVENT DEFAULT_INT_PRI IRQ_TYPE_LEVEL_HIGH>;
> +		clocks = <&REFCLKO4>, <&PBCLK5>;
> +		clock-names = "base_clk", "sys_clk";
> +	};
> -- 
> 1.7.9.5
> 
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Joshua Henderson Nov. 26, 2015, 4:40 a.m. UTC | #3
Hi Sergei,

On 11/21/2015 8:19 AM, Sergei Shtylyov wrote:
> Hello.
> 
> On 11/21/2015 3:17 AM, Joshua Henderson wrote:
> 
>> From: Andrei Pistirica <andrei.pistirica@microchip.com>
>>
>> Document the devicetree bindings for the SDHC peripheral found on
>> Microchip PIC32 class devices.
>>
>> Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com>
>> Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
>> ---
>>   .../devicetree/bindings/mmc/sdhci-pic32.txt        |   24 ++++++++++++++++++++
>>   1 file changed, 24 insertions(+)
>>   create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
>>
>> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
>> new file mode 100644
>> index 0000000..f16388c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
>> @@ -0,0 +1,24 @@
>> +* Microchip PIC32 SDHCI Controller
>> +
>> +This file documents differences between the core properties in mmc.txt
>> +and the properties used by the sdhci-pic32 driver.
>> +
>> +Required properties:
>> +- compatible: Should be "microchip,pic32-sdhci"
>> +- reg: Should contain registers location and length
>> +- interrupts: Should contain interrupt
>> +- pinctrl: Should contain pinctrl for data and command lines
> 
>    This is a required prop, yet the example doesn't contain it?
> 

Ack.  Both the required properties and example need to contain pinctrl-names and pinctrl-0, not pinctrl.

>> +
>> +Optional properties:
>> +- no-1-8-v: 1.8V voltage selection not supported
>> +- piomode: disable DMA support
>> +
>> +Example:
>> +
>> +    sdhci@1f8ec000 {
>> +        compatible = "microchip,pic32-sdhci";
>> +        reg = <0x1f8ec000 0x100>;
>> +        interrupts = <SDHC_EVENT DEFAULT_INT_PRI IRQ_TYPE_LEVEL_HIGH>;
>> +        clocks = <&REFCLKO4>, <&PBCLK5>;
>> +        clock-names = "base_clk", "sys_clk";
> 
>    The "clocks" and "clock-names" props are not documented.
> 
> [...]
> 
> MBR, Sergei
> 

Ack.

Thanks for the feedback,
Josh

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Joshua Henderson Nov. 26, 2015, 5:16 a.m. UTC | #4
Hi Rob,

On 11/22/2015 2:57 PM, Rob Herring wrote:
> On Fri, Nov 20, 2015 at 05:17:24PM -0700, Joshua Henderson wrote:
>> From: Andrei Pistirica <andrei.pistirica@microchip.com>
>>
>> Document the devicetree bindings for the SDHC peripheral found on
>> Microchip PIC32 class devices.
>>
>> Signed-off-by: Andrei Pistirica <andrei.pistirica@microchip.com>
>> Signed-off-by: Joshua Henderson <joshua.henderson@microchip.com>
>> ---
>>  .../devicetree/bindings/mmc/sdhci-pic32.txt        |   24 ++++++++++++++++++++
>>  1 file changed, 24 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
>>
>> diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
>> new file mode 100644
>> index 0000000..f16388c
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
>> @@ -0,0 +1,24 @@
>> +* Microchip PIC32 SDHCI Controller
>> +
>> +This file documents differences between the core properties in mmc.txt
>> +and the properties used by the sdhci-pic32 driver.
>> +
>> +Required properties:
>> +- compatible: Should be "microchip,pic32-sdhci"
>> +- reg: Should contain registers location and length
>> +- interrupts: Should contain interrupt
>> +- pinctrl: Should contain pinctrl for data and command lines
>> +
>> +Optional properties:
>> +- no-1-8-v: 1.8V voltage selection not supported
> 
> There's a standard property for this one.
> 

Correct.  This is indeed a standard property that should not be here.  There is currently discussion to avoid using this property anyway.

>> +- piomode: disable DMA support
> 
> Proably this one too IIRC.
> 

We will be dropping this.  There are other ways to accomplish the same thing outside of DT.

Josh


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diff mbox

Patch

diff --git a/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
new file mode 100644
index 0000000..f16388c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/sdhci-pic32.txt
@@ -0,0 +1,24 @@ 
+* Microchip PIC32 SDHCI Controller
+
+This file documents differences between the core properties in mmc.txt
+and the properties used by the sdhci-pic32 driver.
+
+Required properties:
+- compatible: Should be "microchip,pic32-sdhci"
+- reg: Should contain registers location and length
+- interrupts: Should contain interrupt
+- pinctrl: Should contain pinctrl for data and command lines
+
+Optional properties:
+- no-1-8-v: 1.8V voltage selection not supported
+- piomode: disable DMA support
+
+Example:
+
+	sdhci@1f8ec000 {
+		compatible = "microchip,pic32-sdhci";
+		reg = <0x1f8ec000 0x100>;
+		interrupts = <SDHC_EVENT DEFAULT_INT_PRI IRQ_TYPE_LEVEL_HIGH>;
+		clocks = <&REFCLKO4>, <&PBCLK5>;
+		clock-names = "base_clk", "sys_clk";
+	};