On 5/9/2023 12:38 PM, Krzysztof Kozlowski wrote:
On 08/05/2023 15:45, Manikanta Mylavarapu wrote:
On 3/7/2023 8:47 PM, Krzysztof Kozlowski wrote:
On 07/03/2023 05:41, Manikanta Mylavarapu wrote:
Add new binding document for multipd model remoteproc.
IPQ5018, IPQ9574 follows multipd model.
Signed-off-by: Manikanta Mylavarapu <quic_mmanikan@xxxxxxxxxxx>
---
.../bindings/remoteproc/qcom,multipd-pil.yaml | 282 ++++++++++++++++++
1 file changed, 282 insertions(+)
create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,multipd-pil.yaml
diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,multipd-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,multipd-pil.yaml
new file mode 100644
index 000000000000..b788607f5abd
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,multipd-pil.yaml
@@ -0,0 +1,282 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/remoteproc/qcom,multipd-pil.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm Multipd Secure Peripheral Image Loader
+
+maintainers:
+ - Bjorn Andersson <andersson@xxxxxxxxxx>
+ - Mathieu Poirier <mathieu.poirier@xxxxxxxxxx>
+
+description:
+ Multipd Peripheral Image Loader loads firmware and boots Q6 pd, WCSS pd
+ remoteproc's on the Qualcomm IPQ5018, IPQ9574 SoC.
What is a "pd"?
Pd means protection domain.
It's similar to process in Linux. Here QDSP6 processor runs each wifi
radio functionality on a separate process. One process can't access
other process resources, so this is termed as PD i.e protection domain.
Here we have two pd's called root and user pd. We can correlate Root pd
as root and user pd as user in linux. Root pd has more privileges than
user pd.
From remoteproc driver perspective, root pd corresponds to QDSP6
processor bring up and user pd corresponds to Wifi radio (WCSS) bring up.
Parts of it should be in description. And definitely "pd" should be
explained.
Sure, i will add it in cover page.
+
+properties:
+ compatible:
+ enum:
+ - qcom,ipq5018-q6-mpd
+ - qcom,ipq9574-q6-mpd
+
+ '#address-cells': true
+
+ '#size-cells': true
...
Sure, will add.
+ description:
+ Qualcomm G-Link subnode which represents communication edge, channels
+ and devices related to the Modem.
+
+patternProperties:
+ "^remoteproc_pd1|remoteproc_pd2|remoteproc_pd3":
No, underscores are not allowed. Also, what is pd?
Sure, will remove underscores.
Shouldn't this be just pd-1?
I think 'pd-1' not enough. Because child's i.e userpd's also considered
as remote processor's, so name should be like "remoteproc-pd1".
+ type: object
+ description:
+ In Multipd model, WCSS pd depends on Q6 pd i.e Q6 pd should be up before
+ WCSS. It can be achieved by keeping wcss pd node as subnode of Q6
+ device node.
+
+ properties:
+ compatible:
+ enum:
+ - "qcom,ipq5018-wcss-ahb-mpd"
+ - "qcom,ipq9574-wcss-ahb-mpd"
+ - "qcom,ipq5018-wcss-pcie-mpd"
Best regards,
Krzysztof
Thanks & Regards,
Manikanta.
