[PATCH] arm64: dts: hikey: extend default cma size to 128MB

On 24 August 2016 at 23:10, Rob Herring [off-list ref] wrote:

On Wed, Aug 24, 2016 at 8:35 AM, Guodong Xu [off-list ref] wrote:

quoted

To support display in Debian on HiKey, cma heap is used to allocate
graphic buffers. The default size of CMA is 16 MB which is not enought.

s/enought/enough/

quoted

Increase the default CMA size to 128 MB.

cc: Rob Herring <redacted>
cc: Fathi Boudra <redacted>
cc: John Stultz <redacted>
cc: Xinliang Liu <xinliang.liu@linaro.org>
Signed-off-by: Guodong Xu <redacted>
---
 arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
index 4a51058..abb3434 100644
--- a/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts
+++ b/arch/arm64/boot/dts/hisilicon/hi6220-hikey.dts

@@ -45,6 +45,20 @@
                      <0x00000000 0x22000000 0x00000000 0x1c000000>;
        };

+       reserved-memory {
+               #address-cells = <2>;
+               #size-cells = <2>;
+               ranges;
+
+               /* global autoconfigured region for contiguous allocations */
+               linux,cma {
+                       compatible = "shared-dma-pool";
+                       reusable;
+                       size = <0x00000000 0x08000000>;
+                       linux,cma-default;
+               };
+       };
+
        pstore: pstore at 0x21f00000 {

So what is upstream (as of 4.8) for ramoops also uses reserved-memory,
so you should separately fix this.

Got it. I will fix and resend.

Acked-by: Rob Herring <robh@kernel.org>

Thanks.
-Guodong

Rob