linux-kernel - [PATCH RFC 04/21] dt-bindings: media: ti,j721e-csi2rx-shim: Support 32 dma chans

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 linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite for Android: free password hash cracker in your pocket

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20240222-multistream-v1-4-1837ed916eeb@ti.com>
Date: Thu, 22 Feb 2024 17:01:20 +0530
From: Jai Luthra <j-luthra@...com>
To: Tomi Valkeinen <tomi.valkeinen@...asonboard.com>,
        Mauro Carvalho Chehab
	<mchehab@...nel.org>,
        Sakari Ailus <sakari.ailus@...ux.intel.com>,
        Hans
 Verkuil <hverkuil-cisco@...all.nl>,
        Vaishnav Achath <vaishnav.a@...com>,
        Maxime Ripard <mripard@...nel.org>, Rob Herring <robh@...nel.org>,
        Krzysztof
 Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley
	<conor+dt@...nel.org>
CC: <linux-media@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <devicetree@...r.kernel.org>, Vignesh Raghavendra <vigneshr@...com>,
        Aradhya
 Bhatia <a-bhatia1@...com>, Devarsh Thakkar <devarsht@...com>,
        Changhuang
 Liang <changhuang.liang@...rfivetech.com>,
        Jack Zhu
	<jack.zhu@...rfivetech.com>,
        Julien Massot <julien.massot@...labora.com>,
        Jayshri Pawar <jpawar@...ence.com>, Jai Luthra <j-luthra@...com>
Subject: [PATCH RFC 04/21] dt-bindings: media: ti,j721e-csi2rx-shim:
 Support 32 dma chans

The CSI2RX SHIM IP can support a maximum of 32x DMA channels.

These can be used to split incoming "streams" of data on the CSI-RX
port, distinguished by MIPI Virtual Channel (or Data Type), into
different locations in memory (/dev/videoX nodes).

Actual number of DMA channels reserved is different for each SoC
integrating this IP, but a maximum of 32x channels are always available
in this IP's register space, so set minimum as 1 and maximum as 32.

Link: https://www.ti.com/lit/pdf/spruiv7
Signed-off-by: Jai Luthra <j-luthra@...com>
---
 .../bindings/media/ti,j721e-csi2rx-shim.yaml       | 40 ++++++++++++++++++++--
 1 file changed, 37 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml
index f762fdc05e4d..e47dab7b959e 100644
--- a/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml
+++ b/Documentation/devicetree/bindings/media/ti,j721e-csi2rx-shim.yaml
@@ -20,11 +20,45 @@ properties:
     const: ti,j721e-csi2rx-shim
 
   dmas:
-    maxItems: 1
+    minItems: 1
+    maxItems: 32
 
   dma-names:
+    minItems: 1
+    maxItems: 32
     items:
       - const: rx0
+      - const: rx1
+      - const: rx2
+      - const: rx3
+      - const: rx4
+      - const: rx5
+      - const: rx6
+      - const: rx7
+      - const: rx8
+      - const: rx9
+      - const: rx10
+      - const: rx11
+      - const: rx12
+      - const: rx13
+      - const: rx14
+      - const: rx15
+      - const: rx16
+      - const: rx17
+      - const: rx18
+      - const: rx19
+      - const: rx20
+      - const: rx21
+      - const: rx22
+      - const: rx23
+      - const: rx24
+      - const: rx25
+      - const: rx26
+      - const: rx27
+      - const: rx28
+      - const: rx29
+      - const: rx30
+      - const: rx31
 
   reg:
     maxItems: 1
@@ -62,8 +96,8 @@ examples:
 
     ti_csi2rx0: ticsi2rx@...0000 {
         compatible = "ti,j721e-csi2rx-shim";
-        dmas = <&main_udmap 0x4940>;
-        dma-names = "rx0";
+        dmas = <&main_udmap 0x4940>, <&main_udmap 0x4941>;
+        dma-names = "rx0", "rx1";
         reg = <0x4500000 0x1000>;
         power-domains = <&k3_pds 26 TI_SCI_PD_EXCLUSIVE>;
         #address-cells = <1>;

-- 
2.43.0