From: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
To: linux-media@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org
Cc: Mauro Carvalho Chehab <mchehab@kernel.org>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Maxime Ripard <maxime.ripard@bootlin.com>,
Chen-Yu Tsai <wens@csie.org>,
Paul Kocialkowski <paul.kocialkowski@bootlin.com>,
Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
"David S . Miller" <davem@davemloft.net>,
Andrew Morton <akpm@linux-foundation.org>,
Linus Walleij <linus.walleij@linaro.org>,
Randy Dunlap <rdunlap@infradead.org>,
Hans Verkuil <hans.verkuil@cisco.com>,
Arnd Bergmann <arnd@arndb.de>,
Stanimir Varbanov <stanimir.varbanov@linaro.org>,
Sakari Ailus <sakari.ailus@linux.intel.com>,
Philipp Zabel <p.zabel@pengutronix.de>,
Ramesh Shanmugasundaram <ramesh.shanmugasundaram@bp.renesas.com>,
Yannick Fertre <yannick.fertre@st.com>,
Thomas Gleixner <tglx@linutronix.de>,
Hugues Fruchet <hugues.fruchet@st.com>,
Alexandre Courbot <gnurou@gmail.com>,
Florent Revest <florent.revest@free-electrons.com>,
Tomasz Figa <tfiga@chromium.org>,
Ricardo Ribalda Delgado <ricardo.ribalda@gmail.com>,
Smitha T Murthy <smitha.t@samsung.com>,
Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
Sylwester Nawrocki <s.nawrocki@samsung.com>,
Randy Li <ayaka@soulik.info>
Subject: [PATCH v3 10/14] dt-bindings: media: Document bindings for the Sunxi-Cedrus VPU driver
Date: Mon, 7 May 2018 14:44:56 +0200 [thread overview]
Message-ID: <20180507124500.20434-11-paul.kocialkowski@bootlin.com> (raw)
In-Reply-To: <20180507124500.20434-1-paul.kocialkowski@bootlin.com>
This adds a device-tree binding document that specifies the properties
used by the Sunxi-Cedurs VPU driver, as well as examples.
Signed-off-by: Paul Kocialkowski <paul.kocialkowski@bootlin.com>
---
.../devicetree/bindings/media/sunxi-cedrus.txt | 58 ++++++++++++++++++++++
1 file changed, 58 insertions(+)
create mode 100644 Documentation/devicetree/bindings/media/sunxi-cedrus.txt
diff --git a/Documentation/devicetree/bindings/media/sunxi-cedrus.txt b/Documentation/devicetree/bindings/media/sunxi-cedrus.txt
new file mode 100644
index 000000000000..4c3f2b596ded
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/sunxi-cedrus.txt
@@ -0,0 +1,58 @@
+Device-tree bindings for the VPU found in Allwinner SoCs, referred to as the
+Video Engine (VE) in Allwinner literature.
+
+The VPU can only access the first 256 MiB of DRAM, that are DMA-mapped starting
+from the DRAM base. This requires specific memory allocation and handling.
+
+Required properties:
+- compatible : must be one of the following compatibles:
+ - "allwinner,sun4i-a10-video-engine"
+ - "allwinner,sun5i-a13-video-engine"
+ - "allwinner,sun7i-a20-video-engine"
+ - "allwinner,sun8i-a33-video-engine"
+- reg : register base and length of VE;
+- clocks : list of clock specifiers, corresponding to entries in
+ the clock-names property;
+- clock-names : should contain "ahb", "mod" and "ram" entries;
+- assigned-clocks : list of clocks assigned to the VE;
+- assigned-clocks-rates : list of clock rates for the clocks assigned to the VE;
+- resets : phandle for reset;
+- interrupts : VE interrupt number;
+- allwinner,sram : SRAM region to use with the VE.
+
+Optional properties:
+- memory-region : CMA pool to use for buffers allocation instead of the
+ default CMA pool.
+
+Example:
+
+reserved-memory {
+ #address-cells = <1>;
+ #size-cells = <1>;
+ ranges;
+
+ /* Address must be kept in the lower 256 MiBs of DRAM for VE. */
+ cma_pool: cma@4a000000 {
+ compatible = "shared-dma-pool";
+ size = <0x6000000>;
+ alloc-ranges = <0x4a000000 0x6000000>;
+ reusable;
+ linux,cma-default;
+ };
+};
+
+video-codec@1c0e000 {
+ compatible = "allwinner,sun7i-a20-video-engine";
+ reg = <0x01c0e000 0x1000>;
+
+ clocks = <&ccu CLK_AHB_VE>, <&ccu CLK_VE>,
+ <&ccu CLK_DRAM_VE>;
+ clock-names = "ahb", "mod", "ram";
+
+ assigned-clocks = <&ccu CLK_VE>;
+ assigned-clock-rates = <320000000>;
+
+ resets = <&ccu RST_VE>;
+ interrupts = <GIC_SPI 53 IRQ_TYPE_LEVEL_HIGH>;
+ allwinner,sram = <&ve_sram 1>;
+};
--
2.16.3
next prev parent reply other threads:[~2018-05-07 12:44 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-05-07 12:44 [PATCH v3 00/14] Sunxi-Cedrus driver for the Allwinner Video Engine, using media requests Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 01/14] drivers: soc: sunxi: Add support for the C1 SRAM region Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 02/14] drivers: soc: sunxi: Add dedicated compatibles for the A13, A20 and A33 Paul Kocialkowski
2018-05-11 5:05 ` Chen-Yu Tsai
2018-05-11 10:20 ` Maxime Ripard
2018-06-14 13:02 ` Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 03/14] ARM: dts: sun5i: Use dedicated SRAM controller compatible Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 04/14] ARM: dts: sun7i-a20: " Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 05/14] ARM: sun5i: Add support for the C1 SRAM region with the SRAM controller Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 06/14] ARM: sun7i-a20: " Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 07/14] ARM: sun8i-a33: Add SRAM controller node and C1 SRAM region Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 08/14] media: v4l: Add definitions for MPEG2 frame format and header metadata Paul Kocialkowski
2018-05-07 13:49 ` Hans Verkuil
2018-05-07 13:52 ` Paul Kocialkowski
2018-05-17 4:00 ` kbuild test robot
2018-05-07 12:44 ` [PATCH v3 09/14] media: v4l: Add definition for Allwinner's MB32-tiled NV12 format Paul Kocialkowski
2018-05-07 13:50 ` Hans Verkuil
2018-05-07 12:44 ` Paul Kocialkowski [this message]
2018-05-07 14:18 ` [PATCH v3 10/14] dt-bindings: media: Document bindings for the Sunxi-Cedrus VPU driver Rob Herring
2018-05-07 12:44 ` [PATCH v3 11/14] media: platform: Add Sunxi-Cedrus VPU decoder driver Paul Kocialkowski
2018-05-07 14:02 ` Hans Verkuil
2018-06-14 15:47 ` Paul Kocialkowski
2018-05-07 15:42 ` Maxime Ripard
2018-06-14 15:39 ` Paul Kocialkowski
2018-05-07 18:03 ` kbuild test robot
2018-05-07 12:44 ` [PATCH v3 12/14] ARM: dts: sun5i: Add Video Engine and reserved memory nodes Paul Kocialkowski
2018-05-07 12:44 ` [PATCH v3 13/14] ARM: dts: sun7i-a20: " Paul Kocialkowski
2018-05-07 12:45 ` [PATCH v3 14/14] ARM: dts: sun8i-a33: " Paul Kocialkowski
2018-05-07 14:50 ` [PATCH v3 00/14] Sunxi-Cedrus driver for the Allwinner Video Engine, using media requests Paul Kocialkowski
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