Re: [PATCH 1/2] dt-bindings: remoteproc: qcom: document hexagon based WCSS secure PIL

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On 8/20/2024 4:50 PM, Krzysztof Kozlowski wrote:
On Tue, Aug 20, 2024 at 02:25:14PM +0530, Gokul Sriram Palanisamy wrote:
From: Manikanta Mylavarapu<quic_mmanikan@xxxxxxxxxxx>

Add new binding document for hexagon based WCSS secure PIL remoteproc.
IPQ5332, IPQ9574 follows secure PIL remoteproc.

Signed-off-by: Manikanta Mylavarapu<quic_mmanikan@xxxxxxxxxxx>
Signed-off-by: Gokul Sriram Palanisamy<quic_gokulsri@xxxxxxxxxxx>
---
  .../remoteproc/qcom,wcss-sec-pil.yaml         | 125 ++++++++++++++++++
  1 file changed, 125 insertions(+)
  create mode 100644 Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml

diff --git a/Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml b/Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml
new file mode 100644
index 000000000000..c69401b6cec1
--- /dev/null
+++ b/Documentation/devicetree/bindings/remoteproc/qcom,wcss-sec-pil.yaml
@@ -0,0 +1,125 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id:http://devicetree.org/schemas/remoteproc/qcom,wcss-sec-pil.yaml#
+$schema:http://devicetree.org/meta-schemas/core.yaml#
+
+title: Qualcomm WCSS Secure Peripheral Image Loader
...

+
+maintainers:
+  - Manikanta Mylavarapu<quic_mmanikan@xxxxxxxxxxx>
+
+description:
+  WCSS Secure Peripheral Image Loader loads firmware and power up QDSP6
What is WCSS? Don't add random acronyms without any explanation.

WCSS/WCNSS - Wireless Connectivity subsystem.

will update.

+  remoteproc's on the Qualcomm IPQ9574, IPQ5332 SoC.
+
+properties:
+  compatible:
+    enum:
+      - qcom,ipq5332-wcss-sec-pil
+      - qcom,ipq9574-wcss-sec-pil
+
+  reg:
+    maxItems: 1
+
+  firmware-name:
+    $ref: /schemas/types.yaml#/definitions/string
+    description: Firmware name for the Hexagon core
No, look how other bindings are doing it.

It looks like you develop patches on some old kernel, so please start
from scratch on newest kernel.
will update.
+
+  interrupts:
+    items:
+      - description: Watchdog interrupt
+      - description: Fatal interrupt
+      - description: Ready interrupt
+      - description: Handover interrupt
+      - description: Stop acknowledge interrupt
+
+  interrupt-names:
+    items:
+      - const: wdog
+      - const: fatal
+      - const: ready
+      - const: handover
+      - const: stop-ack
+
+  clocks:
+    items:
+      - description: IM SLEEP clock
What is IM? Explain all acronyms.

What is SLEEP?

IM_SLEEP_CLK - Internal Module sleep clock needed for Q6 reset.

SLEEP is not an acronym here.

+
+  clock-names:
+    items:
+      - const: im_sleep
sleep? Are there different sleep clocks here?

We have different branches of sleep clk each enabled separately.

im_sleep is one of those branches that q6 uses.

+
+  qcom,smem-states:
+    $ref: /schemas/types.yaml#/definitions/phandle-array
+    description: States used by the AP to signal the remote processor
+    items:
+      - description: Shutdown Q6
+      - description: Stop Q6
+
Do not introduce other order. First stop, then shutdown.
will update
+  qcom,smem-state-names:
+    description:
+      Names of the states used by the AP to signal the remote processor
+    items:
+      - const: shutdown
+      - const: stop
The same.
will update.
+
+  memory-region:
+    items:
+      - description: Q6 reserved region
+
+  glink-edge:
+    $ref: /schemas/remoteproc/qcom,glink-edge.yaml#
+    description:
+      Qualcomm G-Link subnode which represents communication edge, channels
+      and devices related to the Modem.
+    unevaluatedProperties: false
+
+required:
+  - compatible
+  - firmware-name
+  - reg
+  - interrupts
+  - interrupt-names
+  - qcom,smem-states
+  - qcom,smem-state-names
+  - memory-region
Keep the same order as in properties.
ok.
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/arm-gic.h>
+    #include <dt-bindings/clock/qcom,ipq5332-gcc.h>
+    q6v5_wcss: remoteproc@d100000 {
Drop unused label.

ok.

Regards,

Gokul

+      compatible = "qcom,ipq5332-wcss-sec-pil";
+      reg = <0xd100000 0x4040>;
+      firmware-name = "ath12k/IPQ5332/hw1.0/q6_fw0.mdt";
+      interrupts-extended = <&intc GIC_SPI 291 IRQ_TYPE_EDGE_RISING>,
+                            <&wcss_smp2p_in 0 IRQ_TYPE_NONE>,
+                            <&wcss_smp2p_in 1 IRQ_TYPE_NONE>,
Best regards,
Krzysztof





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