[media] Documentation: DT: add bindings for ST HVA

This patch adds DT binding documentation for STMicroelectronics hva
driver.

Signed-off-by: Yannick Fertre <yannick.fertre@st.com>
Signed-off-by: Jean-Christophe Trotin <jean-christophe.trotin@st.com>
Acked-by: Peter Griffin <peter.griffin@linaro.org>
Signed-off-by: Hans Verkuil <hans.verkuil@cisco.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@s-opensource.com>

diff --git a/Documentation/devicetree/bindings/media/st,st-hva.txt b/Documentation/devicetree/bindings/media/st,st-hva.txt
new file mode 100644 (file)
index 0000000..0d76174
--- /dev/null
+++ b/Documentation/devicetree/bindings/media/st,st-hva.txt
@@ -0,0 +1,24 @@
+st-hva: multi-format video encoder for STMicroelectronics SoC.
+
+Required properties:
+- compatible: should be "st,st-hva".
+- reg: HVA physical address location and length, esram address location and
+  length.
+- reg-names: names of the registers listed in registers property in the same
+  order.
+- interrupts: HVA interrupt number.
+- clocks: from common clock binding: handle hardware IP needed clocks, the
+  number of clocks may depend on the SoC type.
+  See ../clock/clock-bindings.txt for details.
+- clock-names: names of the clocks listed in clocks property in the same order.
+
+Example:
+       hva@8c85000{
+               compatible = "st,st-hva";
+               reg = <0x8c85000 0x400>, <0x6000000 0x40000>;
+               reg-names = "hva_registers", "hva_esram";
+               interrupts = <GIC_SPI 58 IRQ_TYPE_NONE>,
+                            <GIC_SPI 59 IRQ_TYPE_NONE>;
+               clock-names = "clk_hva";
+               clocks = <&clk_s_c0_flexgen CLK_HVA>;
+       };