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:

quoted

From: Andrei Pistirica <redacted>

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

Signed-off-by: Andrei Pistirica <redacted>
Signed-off-by: Joshua Henderson <redacted>
---
 .../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.

quoted

+- 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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