linux-kernel - [PATCH v3 4/9] spi: dt-bindings: document qcom,gsi-dma-allowed

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Message-Id: <20250303124349.3474185-5-quic_vdadhani@quicinc.com>
Date: Mon,  3 Mar 2025 18:13:44 +0530
From: Viken Dadhaniya <quic_vdadhani@...cinc.com>
To: andi.shyti@...nel.org, robh@...nel.org, krzk+dt@...nel.org,
        conor+dt@...nel.org, gregkh@...uxfoundation.org, jirislaby@...nel.org,
        broonie@...nel.or, andersson@...nel.org, konradybcio@...nel.org,
        johan+linaro@...nel.org, dianders@...omium.org, agross@...nel.org,
        linux-arm-msm@...r.kernel.org, linux-i2c@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-serial@...r.kernel.org, linux-spi@...r.kernel.org
Cc: quic_msavaliy@...cinc.com, quic_anupkulk@...cinc.com,
        Viken Dadhaniya <quic_vdadhani@...cinc.com>
Subject: [PATCH v3 4/9] spi: dt-bindings: document qcom,gsi-dma-allowed

Data transfer mode is fixed by TrustZone (TZ), which currently restricts
developers from modifying the transfer mode from the APPS side.

Document the 'qcom,gsi-dma-allowed' property to select the data transfer
mode to GPI DMA (Generic Packet Interface). If not set, FIFO mode
(PIO/CPU DMA) will be selected by default.

Co-developed-by: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
Signed-off-by: Mukesh Kumar Savaliya <quic_msavaliy@...cinc.com>
Signed-off-by: Viken Dadhaniya <quic_vdadhani@...cinc.com>
---
v2 -> v3:

- Drop the 'qcom,xfer-mode' property and add the 'qcom,gsi-dma-allowed' property.
- Add a reference for the QUP peripheral shared YAML.
- Update commit log.

v2 Link: https://lore.kernel.org/linux-arm-msm/20250124105309.295769-4-quic_vdadhani@quicinc.com/

v1 -> v2:

- Drop 'qcom,load-firmware' property and add 'firmware-name' property in
  qup common driver.
- Update commit log.

v1 Link: https://lore.kernel.org/linux-kernel/20241204150326.1470749-3-quic_vdadhani@quicinc.com/
---
---
 Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.yaml | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.yaml b/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.yaml
index 2e20ca313ec1..012cb7aecb3d 100644
--- a/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.yaml
+++ b/Documentation/devicetree/bindings/spi/qcom,spi-geni-qcom.yaml
@@ -25,6 +25,7 @@ description:
 
 allOf:
   - $ref: /schemas/spi/spi-controller.yaml#
+  - $ref: /schemas/soc/qcom/qcom,se-common-props.yaml#
 
 properties:
   compatible:
@@ -63,6 +64,8 @@ properties:
   power-domains:
     maxItems: 1
 
+  qcom,gsi-dma-allowed: true
+
   reg:
     maxItems: 1
 
-- 
2.34.1