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arm64: tegra: Add power-domain for Tegra210 HDA

Message ID 1609995970-12256-1-git-send-email-spujar@nvidia.com
State Accepted
Commit 1e0ca5467445bc1f41a9e403d6161a22f313dae7
Headers show
Series arm64: tegra: Add power-domain for Tegra210 HDA | expand

Commit Message

Sameer Pujar Jan. 7, 2021, 5:06 a.m. UTC
HDA initialization is failing occasionally on Tegra210 and following
print is observed in the boot log. Because of this probe() fails and
no sound card is registered.

  [16.800802] tegra-hda 70030000.hda: no codecs found!

Codecs request a state change and enumeration by the controller. In
failure cases this does not seem to happen as STATETS register reads 0.

The problem seems to be related to the HDA codec dependency on SOR
power domain. If it is gated during HDA probe then the failure is
observed. Building Tegra HDA driver into kernel image avoids this
failure but does not completely address the dependency part. Fix this
problem by adding 'power-domains' DT property for Tegra210 HDA. Note
that Tegra186 and Tegra194 HDA do this already.

Fixes: 742af7e7a0a1 ("arm64: tegra: Add Tegra210 support")
Depends-on: 96d1f078ff0 ("arm64: tegra: Add SOR power-domain for Tegra210")
Cc: <stable@vger.kernel.org>
Signed-off-by: Sameer Pujar <spujar@nvidia.com>
---
 arch/arm64/boot/dts/nvidia/tegra210.dtsi | 1 +
 1 file changed, 1 insertion(+)

Comments

Jon Hunter Jan. 7, 2021, 9:48 a.m. UTC | #1
On 07/01/2021 05:06, Sameer Pujar wrote:
> HDA initialization is failing occasionally on Tegra210 and following
> print is observed in the boot log. Because of this probe() fails and
> no sound card is registered.
> 
>   [16.800802] tegra-hda 70030000.hda: no codecs found!
> 
> Codecs request a state change and enumeration by the controller. In
> failure cases this does not seem to happen as STATETS register reads 0.
> 
> The problem seems to be related to the HDA codec dependency on SOR
> power domain. If it is gated during HDA probe then the failure is
> observed. Building Tegra HDA driver into kernel image avoids this
> failure but does not completely address the dependency part. Fix this
> problem by adding 'power-domains' DT property for Tegra210 HDA. Note
> that Tegra186 and Tegra194 HDA do this already.
> 
> Fixes: 742af7e7a0a1 ("arm64: tegra: Add Tegra210 support")
> Depends-on: 96d1f078ff0 ("arm64: tegra: Add SOR power-domain for Tegra210")
> Cc: <stable@vger.kernel.org>
> Signed-off-by: Sameer Pujar <spujar@nvidia.com>
> ---
>  arch/arm64/boot/dts/nvidia/tegra210.dtsi | 1 +
>  1 file changed, 1 insertion(+)
> 
> diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
> index 4fbf8c1..fd33b4d 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
> @@ -997,6 +997,7 @@
>  			 <&tegra_car 128>, /* hda2hdmi */
>  			 <&tegra_car 111>; /* hda2codec_2x */
>  		reset-names = "hda", "hda2hdmi", "hda2codec_2x";
> +		power-domains = <&pd_sor>;
>  		status = "disabled";
>  	};

Thanks!

Acked-by: Jon Hunter <jonathanh@nvidia.com>

Cheers
Jon
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/nvidia/tegra210.dtsi b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
index 4fbf8c1..fd33b4d 100644
--- a/arch/arm64/boot/dts/nvidia/tegra210.dtsi
+++ b/arch/arm64/boot/dts/nvidia/tegra210.dtsi
@@ -997,6 +997,7 @@ 
 			 <&tegra_car 128>, /* hda2hdmi */
 			 <&tegra_car 111>; /* hda2codec_2x */
 		reset-names = "hda", "hda2hdmi", "hda2codec_2x";
+		power-domains = <&pd_sor>;
 		status = "disabled";
 	};