[PATCH 2/3] arm64: dts: qcom: sm8150: add iommus to qups

Caleb Connolly
2021-03-10T16:32:20Z

Hook up the SMMU for doing DMA over i2c. Some peripherals like
touchscreens easily exceed 32-bytes per transfer, causing errors and
lockups without this.

Signed-off-by: Caleb Connolly <caleb@connolly.tech>
---
Fixes i2c on the OnePlus 7, without this touching the screen with more
than 4 fingers causes the device to lock up and reboot.
---
arch/arm64/boot/dts/qcom/sm8150.dtsi | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/qcom/sm8150.dtsi b/arch/arm64/boot/dts/qcom/sm8150.dtsi
index 03e05d98daf2..543417d74216 100644
--- a/arch/arm64/boot/dts/qcom/sm8150.dtsi
+++ b/arch/arm64/boot/dts/qcom/sm8150.dtsi
@@ -583,6 +583,7 @@ qupv3_id_0: geniqup@8c0000 {
clock-names = "m-ahb", "s-ahb";
clocks = <&gcc GCC_QUPV3_WRAP_0_M_AHB_CLK>,
<&gcc GCC_QUPV3_WRAP_0_S_AHB_CLK>;
+ iommus = <&apps_smmu 0xc3 0x0>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
@@ -595,6 +596,7 @@ qupv3_id_1: geniqup@ac0000 {
clock-names = "m-ahb", "s-ahb";
clocks = <&gcc GCC_QUPV3_WRAP_1_M_AHB_CLK>,
<&gcc GCC_QUPV3_WRAP_1_S_AHB_CLK>;
+ iommus = <&apps_smmu 0x603 0x0>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
@@ -617,6 +619,7 @@ qupv3_id_2: geniqup@cc0000 {
clock-names = "m-ahb", "s-ahb";
clocks = <&gcc GCC_QUPV3_WRAP_2_M_AHB_CLK>,
<&gcc GCC_QUPV3_WRAP_2_S_AHB_CLK>;
+ iommus = <&apps_smmu 0x7a3 0x0>;
#address-cells = <2>;
#size-cells = <2>;
ranges;
--
2.29.2