Hello.
On 10-10-2011 20:43, Nicolas Ferre wrote:
Device tree support on at91sam9g45 family SoC. Only call
platform_device_register() if no compatible dma-controller
node is found in device tree.
Signed-off-by: Nicolas Ferre<[email protected]>
---
V2: use compatible string to match device.
[...]
diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c
b/arch/arm/mach-at91/at91sam9g45_devices.c
index 9390ae6..2120055 100644
--- a/arch/arm/mach-at91/at91sam9g45_devices.c
+++ b/arch/arm/mach-at91/at91sam9g45_devices.c
@@ -64,7 +64,13 @@ static struct platform_device at_hdmac_device = {
void __init at91_add_device_hdmac(void)
{
- platform_device_register(&at_hdmac_device);
+ struct device_node *np = of_find_node_by_name(NULL, "dma-controller");
+
+ if (np&& of_device_is_compatible(np, "atmel,at91sam9g45-dma")) {
+ of_node_put(np);
+ } else {
+ platform_device_register(&at_hdmac_device);
+ }
{} not needed here, and checkpatch.pl should have protested.
WBR, Sergei
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