lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Fri, 31 Aug 2018 10:52:02 +0200 From: Maxime Jourdan <mjourdan@...libre.com> To: Kevin Hilman <khilman@...libre.com>, Rob Herring <robh+dt@...nel.org> Cc: Maxime Jourdan <mjourdan@...libre.com>, Mauro Carvalho Chehab <mchehab@...nel.org>, Hans Verkuil <hans.verkuil@...co.com>, Jerome Brunet <jbrunet@...libre.com>, Neil Armstrong <narmstrong@...libre.com>, Martin Blumenstingl <martin.blumenstingl@...glemail.com>, linux-media@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, linux-amlogic@...ts.infradead.org Subject: [PATCH 1/4] dt-bindings: media: add Amlogic Video Decoder Bindings Add documentation for the meson vdec dts node. Signed-off-by: Maxime Jourdan <mjourdan@...libre.com> --- .../bindings/media/amlogic,vdec.txt | 63 +++++++++++++++++++ 1 file changed, 63 insertions(+) create mode 100644 Documentation/devicetree/bindings/media/amlogic,vdec.txt diff --git a/Documentation/devicetree/bindings/media/amlogic,vdec.txt b/Documentation/devicetree/bindings/media/amlogic,vdec.txt new file mode 100644 index 000000000000..c6450f2e7f28 --- /dev/null +++ b/Documentation/devicetree/bindings/media/amlogic,vdec.txt @@ -0,0 +1,63 @@ +Amlogic Video Decoder +================================ + +The VDEC IP is composed of the following blocks : + +- ESPARSER is a bitstream parser that outputs to a VIFIFO. Further VDEC blocks +then feed from this VIFIFO. +- VDEC_1 can decode MPEG-1, MPEG-2, MPEG-4 part 2, H.263, H.264. +- VDEC_2 is used as a helper for corner cases like H.264 4K on older SoCs. +It is not handled by this driver. +- VDEC_HCODEC is the H.264 encoding block. It is not handled by this driver. +- VDEC_HEVC can decode HEVC and VP9. + +Device Tree Bindings: +--------------------- + +VDEC: Video Decoder +-------------------------- + +Required properties: +- compatible: value should be different for each SoC family as : + - GXBB (S905) : "amlogic,gxbb-vdec" + - GXL (S905X, S905D) : "amlogic,gxl-vdec" + - GXM (S912) : "amlogic,gxm-vdec" +- reg: base address and size of he following memory-mapped regions : + - dos + - esparser +- reg-names: should contain the names of the previous memory regions +- interrupts: should contain the vdec and esparser IRQs. +- amlogic,ao-sysctrl: should point to the AOBUS sysctrl node +- amlogic,canvas: should point to a canvas provider node +- clocks: should contain the following clocks : + - dos_parser + - dos + - vdec_1 + - vdec_hevc +- clock-names: should contain the names of the previous clocks +- resets: should contain the parser reset. +- reset-names: should be "esparser". + +Example: + +vdec: video-decoder@...20000 { + compatible = "amlogic,gxbb-vdec"; + reg = <0x0 0xc8820000 0x0 0x10000>, + <0x0 0xc110a580 0x0 0xe4>; + reg-names = "dos", "esparser"; + + interrupts = <GIC_SPI 44 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 32 IRQ_TYPE_EDGE_RISING>; + + amlogic,ao-sysctrl = <&sysctrl_AO>; + amlogic,canvas = <&canvas>; + + clocks = <&clkc CLKID_DOS_PARSER>, + <&clkc CLKID_DOS>, + <&clkc CLKID_VDEC_1>, + <&clkc CLKID_VDEC_HEVC>; + clock-names = "dos_parser", "dos", "vdec_1", "vdec_hevc"; + + resets = <&reset RESET_PARSER>; + reset-names = "esparser"; +}; -- 2.18.0
Powered by blists - more mailing lists