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One last Qualcomm ARM64 DeviceTree fix for v6.4

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Changes related to cache management for DMA memory caused WiFi to stop
 work on SC7180 and SC7280 based products, using TF-A. These changes
 marks the relevant device dma-coherent to correct the behavior.
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Merge tag 'qcom-arm64-fixes-for-6.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux into arm/fixes

One last Qualcomm ARM64 DeviceTree fix for v6.4

Changes related to cache management for DMA memory caused WiFi to stop
work on SC7180 and SC7280 based products, using TF-A. These changes
marks the relevant device dma-coherent to correct the behavior.

* tag 'qcom-arm64-fixes-for-6.4-2' of https://git.kernel.org/pub/scm/linux/kernel/git/qcom/linux:
  arm64: dts: qcom: sc7280: Mark SCM as dma-coherent for chrome devices
  arm64: dts: qcom: sc7180: Mark SCM as dma-coherent for trogdor
  arm64: dts: qcom: sc7180: Mark SCM as dma-coherent for IDP
  dt-bindings: firmware: qcom,scm: Document that SCM can be dma-coherent

Link: https://lore.kernel.org/r/20230622203248.106422-1-andersson@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Arnd Bergmann 2023-06-23 22:13:22 +02:00
commit ed8ff046ed
6 changed files with 19 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
Documentation/devicetree/bindings/firmware/qcom,scm.yaml
View File

@ -71,6 +71,8 @@ properties:
minItems: 1
maxItems: 3
dma-coherent: true
interconnects:
maxItems: 1

5
arch/arm64/boot/dts/qcom/sc7180-idp.dts
View File

@ -393,6 +393,11 @@
qcom,spare-regs = <&tcsr_regs_2 0xb3e4>;
};
&scm {
/* TF-A firmware maps memory cached so mark dma-coherent to match. */
dma-coherent;
};
&sdhc_1 {
status = "okay";

5
arch/arm64/boot/dts/qcom/sc7180-trogdor.dtsi
View File

@ -892,6 +892,11 @@ hp_i2c: &i2c9 {
qcom,spare-regs = <&tcsr_regs_2 0xb3e4>;
};
&scm {
/* TF-A firmware maps memory cached so mark dma-coherent to match. */
dma-coherent;
};
&sdhc_1 {
status = "okay";

2
arch/arm64/boot/dts/qcom/sc7180.dtsi
View File

@ -369,7 +369,7 @@
};
firmware {
scm {
scm: scm {
compatible = "qcom,scm-sc7180", "qcom,scm";
};
};

5
arch/arm64/boot/dts/qcom/sc7280-chrome-common.dtsi
View File

@ -79,6 +79,11 @@
firmware-name = "ath11k/WCN6750/hw1.0/wpss.mdt";
};
&scm {
/* TF-A firmware maps memory cached so mark dma-coherent to match. */
dma-coherent;
};
&wifi {
status = "okay";

2
arch/arm64/boot/dts/qcom/sc7280.dtsi
View File

@ -656,7 +656,7 @@
};
firmware {
scm {
scm: scm {
compatible = "qcom,scm-sc7280", "qcom,scm";
};
};