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[RFC/PATCH,1/2] dt-binding: spi: spi-dw: Select 16b or 32b access for Designware SPI

Message ID 1425501075-17081-2-git-send-email-tthayer@opensource.altera.com
State New, archived
Headers show

Commit Message

tthayer@opensource.altera.com March 4, 2015, 8:31 p.m. UTC
From: Thor Thayer <tthayer@opensource.altera.com>

Altera's Arria10 architecture requires a 32bit accesses for
peripherals. The current spi-dw driver uses 16bit accesses in
some locations. This patch updated the bindings with an optional
field the devicetree can use to select 32bit accesses.

Signed-off-by: Thor Thayer <tthayer@opensource.altera.com>
---
 Documentation/devicetree/bindings/spi/spi-dw.txt |    1 +
 1 file changed, 1 insertion(+)
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Patch

diff --git a/Documentation/devicetree/bindings/spi/spi-dw.txt b/Documentation/devicetree/bindings/spi/spi-dw.txt
index 7b63ed6..034dbdd 100644
--- a/Documentation/devicetree/bindings/spi/spi-dw.txt
+++ b/Documentation/devicetree/bindings/spi/spi-dw.txt
@@ -11,6 +11,7 @@  Required properties:
 
 Optional properties:
 - cs-gpios: see spi-bus.txt
+- 32bit_access : use 32 bit register accesses
 
 Example: