[PATCH v2] arm64: dts: qcom: msm8998: enable adreno_smmu by default

[Marc Gonzalez]

15 qcom platform DTSI files define an adreno_smmu node.
msm8998 is the only one with adreno_smmu disabled by default.

There's no reason why this SMMU should be disabled by default,
it doesn't need any further configuration.

Bring msm8998 in line with the 14 other platforms.

This fixes GPU init failing with ENODEV:
msm_dpu c901000.display-controller: failed to load adreno gpu
msm_dpu c901000.display-controller: failed to bind 5000000.gpu (ops a3xx_ops): -19

Fixes: 87cd46d68aeac8 ("Configure Adreno GPU and related IOMMU")
Signed-off-by: Marc Gonzalez <mgonzalez at freebox.fr>
Reviewed-by: Bryan O'Donoghue <bryan.odonoghue at linaro.org>
---
New in v2: rewrote commit message with input from Martin, Bryan, Luca
Supersedes: <1ba7031f-c97c-41f1-8cbc-d99f1e848e76 at freebox.fr>

Maintainers, feel free to drop the Fixes tag.

Failure log:
[    2.756363] [drm:adreno_bind] Found GPU: 5.4.0.1
[    2.767183] [drm:a5xx_gpu_init]
[    2.767422] [drm:adreno_gpu_init] fast_rate=710000097, slow_rate=27000000
[    3.003869] [drm:msm_gpu_init] ebi1_clk: fffffffffffffffe
[    3.004002] adreno 5000000.gpu: supply vdd not found, using dummy regulator
[    3.008463] [drm:msm_gpu_init] gpu_reg: ffff0000819e4000
[    3.015105] adreno 5000000.gpu: supply vddcx not found, using dummy regulator
[    3.020702] [drm:msm_gpu_init] gpu_cx: ffff0000819e4180
[    3.028173] [drm:adreno_iommu_create_address_space]
[    3.054552] [drm:msm_gpu_init] gpu->aspace=ffffffffffffffed
[    3.058112] [drm:a5xx_destroy] 5.4.0.1
[    3.065922] [drm:msm_gpu_cleanup] 5.4.0.1
[    3.074237] msm_dpu c901000.display-controller: failed to load adreno gpu
[    3.082412] msm_dpu c901000.display-controller: failed to bind 5000000.gpu (ops a3xx_ops): -19
[    3.088342] msm_dpu c901000.display-controller: [drm:drm_managed_release] drmres release begin
...
[    3.197694] [drm:drm_managed_release] drmres release end
[    3.204009] msm_dpu c901000.display-controller: adev bind failed: -19
---
 arch/arm64/boot/dts/qcom/msm8998.dtsi | 1 -
 1 file changed, 1 deletion(-)

diff --git a/arch/arm64/boot/dts/qcom/msm8998.dtsi b/arch/arm64/boot/dts/qcom/msm8998.dtsi
index 3d3b1f61c0690..edf379c28e1e1 100644
--- a/arch/arm64/boot/dts/qcom/msm8998.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8998.dtsi
@@ -1580,7 +1580,6 @@ adreno_smmu: iommu at 5040000 {
 			 * SoC VDDMX RPM Power Domain in the Adreno driver.
 			 */
 			power-domains = <&gpucc GPU_GX_GDSC>;
-			status = "disabled";
 		};
 
 		gpucc: clock-controller at 5065000 {
-- 
2.34.1