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From: <tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
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Subject: [RFC/PATCH 1/2] dt-binding: spi: spi-dw: Select 16b or 32b access for Designware SPI
Date: Wed, 4 Mar 2015 14:31:14 -0600	[thread overview]
Message-ID: <1425501075-17081-2-git-send-email-tthayer@opensource.altera.com> (raw)
In-Reply-To: <1425501075-17081-1-git-send-email-tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>

From: Thor Thayer <tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>

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-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
---
 Documentation/devicetree/bindings/spi/spi-dw.txt |    1 +
 1 file changed, 1 insertion(+)

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:
 
-- 
1.7.9.5

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  parent reply	other threads:[~2015-03-04 20:31 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-04 20:31 [RFC/PATCH 0/2] spi: spi-dw: Select 16b or 32b register access tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx
2015-03-04 20:31 ` [RFC/PATCH 2/2] spi: dw-spi: Pointers select 16b vs. 32b DesignWare access tthayer
2015-03-04 20:55   ` Andy Shevchenko
     [not found]     ` <1425502525.14897.185.camel-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-03-04 22:07       ` Thor Thayer
     [not found] ` <1425501075-17081-1-git-send-email-tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2015-03-04 20:31   ` tthayer-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx [this message]
2015-03-04 20:44   ` [RFC/PATCH 0/2] spi: spi-dw: Select 16b or 32b register access Andy Shevchenko
2015-03-04 22:01     ` Thor Thayer
     [not found]       ` <54F7809E.2010307-yzvPICuk2ABMcg4IHK0kFoH6Mc4MB0Vx@public.gmane.org>
2015-03-05 10:43         ` Andy Shevchenko
     [not found]           ` <1425552233.14897.189.camel-VuQAYsv1563Yd54FQh9/CA@public.gmane.org>
2015-03-05 20:41             ` Thor Thayer
2015-03-05 21:54               ` Andy Shevchenko
2015-03-06 23:06                 ` Thor Thayer
2015-03-04 21:02 ` Andy Shevchenko

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