[PATCH v3] ARM: at91: pit add DT support

On 01/05/2012 07:00 PM, Grant Likely :

On Thu, Jan 05, 2012 at 06:25:48PM +0100, Nicolas Ferre wrote:

quoted

From: Jean-Christophe PLAGNIOL-VILLARD <redacted>

Retreive registers address and IRQ from device tree entry. Fall back
to built-in values if an error occurs.

Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <redacted>
[nicolas.ferre at atmel.com: change error path and interrupts property handling]
Signed-off-by: Nicolas Ferre <redacted>
---
v3: - use irq_of_parse_and_map() for handling irq numbers specified by DT.
      Correction proposed by Jamie Iles.

v2: - new specification of irq numbers in DT (due to modification of AIC code)
    - new error path in of_at91sam926x_pit_init()
    - fall back to built-in values if an error occurs
    - use of of_property_read_u32() to get irq property

 .../devicetree/bindings/arm/atmel-at91.txt         |    8 +++
 arch/arm/boot/dts/at91sam9g20.dtsi                 |    5 ++
 arch/arm/boot/dts/at91sam9g45.dtsi                 |    6 ++
 arch/arm/mach-at91/at91sam926x_time.c              |   53 +++++++++++++++++++-
 4 files changed, 70 insertions(+), 2 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/arm/atmel-at91.txt

[..]

quoted

--- a/arch/arm/mach-at91/at91sam926x_time.c
+++ b/arch/arm/mach-at91/at91sam926x_time.c

[..]

quoted

+	/* Get the interrupts property */
+	ret = irq_of_parse_and_map(np, 0);
+	if (ret <= 0)
+		goto ioremap_err;

if (!ret)

The DT irq functions return 0 on failure.

Ok, modified in new revision.

Best regards,
-- 
Nicolas Ferre