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* Samsung Multi Format Codec (MFC)
Multi Format Codec (MFC) is the IP present in Samsung SoCs which
supports high resolution decoding and encoding functionalities.
The MFC device driver is a v4l2 driver which can encode/decode
video raw/elementary streams and has support for all popular
video codecs.
Required properties:
- compatible : value should be either one among the following
(a) "samsung,mfc-v5" for MFC v5 present in Exynos4 SoCs
(b) "samsung,mfc-v6" for MFC v6 present in Exynos5 SoCs
(c) "samsung,exynos3250-mfc", "samsung,mfc-v7" for MFC v7
present in Exynos3250 SoC
(d) "samsung,mfc-v7" for MFC v7 present in Exynos5420 SoC
(e) "samsung,mfc-v8" for MFC v8 present in Exynos5800 SoC
(f) "samsung,exynos5433-mfc" for MFC v8 present in Exynos5433 SoC
(g) "samsung,mfc-v10" for MFC v10 present in Exynos7880 SoC
- reg : Physical base address of the IP registers and length of memory
mapped region.
- interrupts : MFC interrupt number to the CPU.
- clocks : from common clock binding: handle to mfc clock.
- clock-names : from common clock binding: must contain "mfc",
corresponding to entry in the clocks property.
Optional properties:
- power-domains : power-domain property defined with a phandle
to respective power domain.
- memory-region : from reserved memory binding: phandles to two reserved
memory regions, first is for "left" mfc memory bus interfaces,
second if for the "right" mfc memory bus, used when no SYSMMU
support is available; used only by MFC v5 present in Exynos4 SoCs
Obsolete properties:
- samsung,mfc-r, samsung,mfc-l : support removed, please use memory-region
property instead
Example:
SoC specific DT entry:
mfc: codec@13400000 {
compatible = "samsung,mfc-v5";
reg = <0x13400000 0x10000>;
interrupts = <0 94 0>;
power-domains = <&pd_mfc>;
clocks = <&clock 273>;
clock-names = "mfc";
};
Reserved memory specific DT entry for given board (see reserved memory binding
for more information):
reserved-memory {
#address-cells = <1>;
#size-cells = <1>;
ranges;
mfc_left: region@51000000 {
compatible = "shared-dma-pool";
no-map;
reg = <0x51000000 0x800000>;
};
mfc_right: region@43000000 {
compatible = "shared-dma-pool";
no-map;
reg = <0x43000000 0x800000>;
};
};
Board specific DT entry:
codec@13400000 {
memory-region = <&mfc_left>, <&mfc_right>;
};
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