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authorMax Filippov <jcmvbkbc@gmail.com>2016-11-04 14:44:22 -0700
committerMax Filippov <jcmvbkbc@gmail.com>2016-12-15 10:41:50 -0800
commit644b213ccced83495eb54dd48764f7e963bcc1c0 (patch)
treea039e2eb64f516db1032acf36bd89607a3ea8d7d /arch
parent9d2ffe5c62554f2795859bb661eb138759eee980 (diff)
xtensa: configure shared DMA pool reservation in kc705 DTS
Add example 64MByte long reservation in the first 512MBytes of physical memory used as shared DMA pool. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch')
-rw-r--r--arch/xtensa/boot/dts/kc705.dts16
1 files changed, 16 insertions, 0 deletions
diff --git a/arch/xtensa/boot/dts/kc705.dts b/arch/xtensa/boot/dts/kc705.dts
index b1f4ee8c9a22..6106bdc097ad 100644
--- a/arch/xtensa/boot/dts/kc705.dts
+++ b/arch/xtensa/boot/dts/kc705.dts
@@ -11,4 +11,20 @@
device_type = "memory";
reg = <0x00000000 0x38000000>;
};
+
+ reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ /* global autoconfigured region for contiguous allocations */
+ linux,cma {
+ compatible = "shared-dma-pool";
+ reusable;
+ size = <0x04000000>;
+ alignment = <0x2000>;
+ alloc-ranges = <0x00000000 0x20000000>;
+ linux,cma-default;
+ };
+ };
};