[PATCH v3 1/2] media: dt-bindings: nxp,imx8-jpeg: Document optional SRAM support

[Marek Vasut]

Document optional phandle to mmio-sram, which can describe an SRAM
region used for descriptor storage instead of regular DRAM region.
Use of SRAM instead of DRAM for descriptor storage may improve bus
access pattern and performance.

Reviewed-by: Frank Li <Frank.Li at nxp.com>
Signed-off-by: Marek Vasut <marek.vasut at mailbox.org>
---
Cc: Fabio Estevam <festevam at gmail.com>
Cc: Laurent Pinchart <laurent.pinchart at ideasonboard.com>
Cc: Mauro Carvalho Chehab <mchehab at kernel.org>
Cc: Ming Qian <ming.qian at oss.nxp.com>
Cc: Mirela Rabulea <mirela.rabulea at nxp.com>
Cc: Nicolas Dufresne <nicolas.dufresne at collabora.com>
Cc: Pengutronix Kernel Team <kernel at pengutronix.de>
Cc: Sascha Hauer <s.hauer at pengutronix.de>
Cc: Shawn Guo <shawnguo at kernel.org>
Cc: imx at lists.linux.dev
Cc: linux-arm-kernel at lists.infradead.org
Cc: linux-media at vger.kernel.org
---
V2: - New patch
V3: - Drop description: | and add RB from Frank
---
 Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml b/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
index 4cba42ba7cf72..7340989489da3 100644
--- a/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
+++ b/Documentation/devicetree/bindings/media/nxp,imx8-jpeg.yaml
@@ -55,6 +55,12 @@ properties:
     minItems: 1               # Wrapper and all slots
     maxItems: 5               # Wrapper and 4 slots
 
+  sram:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description:
+      Optional phandle to a reserved on-chip SRAM regions. The SRAM can
+      be used for descriptor storage, which may improve bus utilization.
+
 required:
   - compatible
   - reg
-- 
2.51.0