diff options
| author | Jason Liu <jason.hui.liu@nxp.com> | 2016-03-14 16:40:12 +0800 |
|---|---|---|
| committer | Jason Liu <jason.hui.liu@nxp.com> | 2016-03-15 17:24:02 +0800 |
| commit | d078a05d4268e93c66e5cbffafa9344a58304150 (patch) | |
| tree | fc103d25b8cd7ff0c481426314be1f3830065428 | |
| parent | 3924425928aab27283e4c635f61bd523f20a7168 (diff) | |
MLK-12556 dts: i.mx6ul: configure the CMA region by default
CMA region is a must to avoid the multile memory mapping
for the DMAed memory and also benifit the large continious
phisical memory allocation.
The default value is depend on the target system design and
user cases definition. This is not suitable to put this into
the soc.dtsi, thus we put it into the board DTS.
customer can override the value by changing cma size in DTS file.
Again, customer need set the CMA size correctly according to the
target system. The incorrectly CMA size can cause Linux kernel fail
to boot up.CMA disabled or CMA size set to zero is also not allowed.
Signed-off-by: Jason Liu <jason.hui.liu@nxp.com>
| -rw-r--r-- | arch/arm/boot/dts/imx6ul-14x14-ddr3-arm2.dts | 13 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx6ul-14x14-evk.dts | 13 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx6ul-14x14-lpddr2-arm2.dts | 13 | ||||
| -rw-r--r-- | arch/arm/boot/dts/imx6ul-9x9-evk.dts | 13 |
4 files changed, 52 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/imx6ul-14x14-ddr3-arm2.dts b/arch/arm/boot/dts/imx6ul-14x14-ddr3-arm2.dts index 13147ede7afc..ad45ba438e99 100644 --- a/arch/arm/boot/dts/imx6ul-14x14-ddr3-arm2.dts +++ b/arch/arm/boot/dts/imx6ul-14x14-ddr3-arm2.dts @@ -23,6 +23,19 @@ reg = <0x80000000 0x40000000>; }; + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + linux,cma { + compatible = "shared-dma-pool"; + reusable; + size = <0x14000000>; + linux,cma-default; + }; + }; + pxp_v4l2 { compatible = "fsl,imx6ul-pxp-v4l2", "fsl,imx6sx-pxp-v4l2", "fsl,imx6sl-pxp-v4l2"; status = "okay"; diff --git a/arch/arm/boot/dts/imx6ul-14x14-evk.dts b/arch/arm/boot/dts/imx6ul-14x14-evk.dts index 0da393ca8cf7..430da40ac867 100644 --- a/arch/arm/boot/dts/imx6ul-14x14-evk.dts +++ b/arch/arm/boot/dts/imx6ul-14x14-evk.dts @@ -23,6 +23,19 @@ reg = <0x80000000 0x20000000>; }; + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + linux,cma { + compatible = "shared-dma-pool"; + reusable; + size = <0x14000000>; + linux,cma-default; + }; + }; + backlight { compatible = "pwm-backlight"; pwms = <&pwm1 0 5000000>; diff --git a/arch/arm/boot/dts/imx6ul-14x14-lpddr2-arm2.dts b/arch/arm/boot/dts/imx6ul-14x14-lpddr2-arm2.dts index 3bee66a889f2..4a700a4da00b 100644 --- a/arch/arm/boot/dts/imx6ul-14x14-lpddr2-arm2.dts +++ b/arch/arm/boot/dts/imx6ul-14x14-lpddr2-arm2.dts @@ -23,6 +23,19 @@ reg = <0x80000000 0x20000000>; }; + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + linux,cma { + compatible = "shared-dma-pool"; + reusable; + size = <0x14000000>; + linux,cma-default; + }; + }; + pxp_v4l2 { compatible = "fsl,imx6ul-pxp-v4l2", "fsl,imx6sx-pxp-v4l2", "fsl,imx6sl-pxp-v4l2"; status = "okay"; diff --git a/arch/arm/boot/dts/imx6ul-9x9-evk.dts b/arch/arm/boot/dts/imx6ul-9x9-evk.dts index 7f57b520e86c..39c84e2dfea1 100644 --- a/arch/arm/boot/dts/imx6ul-9x9-evk.dts +++ b/arch/arm/boot/dts/imx6ul-9x9-evk.dts @@ -31,6 +31,19 @@ reg = <0x80000000 0x10000000>; }; + reserved-memory { + #address-cells = <1>; + #size-cells = <1>; + ranges; + + linux,cma { + compatible = "shared-dma-pool"; + reusable; + size = <0x6000000>; + linux,cma-default; + }; + }; + pxp_v4l2 { compatible = "fsl,imx6ul-pxp-v4l2", "fsl,imx6sx-pxp-v4l2", "fsl,imx6sl-pxp-v4l2"; status = "okay"; |