diff mbox series

[v2,3/4] arm64: dts: qcom: Disable MDSS by default for 8916/8016 devices

Message ID 20210130105717.2628781-4-vincent.knecht@mailoo.org (mailing list archive)
State Accepted
Headers show
Series Alcatel Idol 3 (4.7") smartphone support | expand

Commit Message

Vincent Knecht Jan. 30, 2021, 10:57 a.m. UTC
Disable MDSS (Mobile Display Subsystem) by default in msm8916.dtsi
and only explicitly enable it in devices' DT which actually use it.

This leads to faster boot and cleaner logs for other devices,
which also won't have to explicitly disable MDSS to use framebuffer.

Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
---
 arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi                  | 4 ++++
 arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi | 4 ++++
 arch/arm64/boot/dts/qcom/msm8916.dtsi                      | 1 +
 3 files changed, 9 insertions(+)

Comments

Stephan Gerhold Jan. 30, 2021, 11:28 a.m. UTC | #1
On Sat, Jan 30, 2021 at 11:57:12AM +0100, Vincent Knecht wrote:
> Disable MDSS (Mobile Display Subsystem) by default in msm8916.dtsi
> and only explicitly enable it in devices' DT which actually use it.
> 
> This leads to faster boot and cleaner logs for other devices,
> which also won't have to explicitly disable MDSS to use framebuffer.
> 
> Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>

Thanks for the patch! I think this is a good thing because normally most
things are disabled by default in msm8916.dtsi (e.g. eMMC, SD card,
WCNSS, ....). Also, there are actually some devices that don't have a
display (e.g. the 4IoT board [1]). Having to disable it specifically is
kind of weird. So:

Reviewed-by: Stephan Gerhold <stephan@gerhold.net>

[1]: https://www.96boards.org/product/4iot/

> ---
>  arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi                  | 4 ++++
>  arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi | 4 ++++
>  arch/arm64/boot/dts/qcom/msm8916.dtsi                      | 1 +
>  3 files changed, 9 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
> index 3a9538e1ec97..6aef0c2e4f0a 100644
> --- a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
> +++ b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
> @@ -301,6 +301,10 @@ &lpass {
>  	status = "okay";
>  };
>  
> +&mdss {
> +	status = "okay";
> +};
> +
>  &pm8916_resin {
>  	status = "okay";
>  	linux,code = <KEY_VOLUMEDOWN>;
> diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> index f1af798abd74..230ba3ce3277 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> @@ -132,6 +132,10 @@ &dsi0 {
>  	pinctrl-1 = <&mdss_sleep>;
>  };
>  
> +&mdss {
> +	status = "okay";
> +};
> +
>  &pm8916_resin {
>  	status = "okay";
>  	linux,code = <KEY_VOLUMEDOWN>;
> diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
> index 402e891a84ab..8f9a651d3827 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
> @@ -913,6 +913,7 @@ tcsr: syscon@1937000 {
>  		};
>  
>  		mdss: mdss@1a00000 {
> +			status = "disabled";
>  			compatible = "qcom,mdss";
>  			reg = <0x01a00000 0x1000>,
>  			      <0x01ac8000 0x3000>;
> -- 
> 2.29.2
> 
> 
>
Konrad Dybcio Jan. 30, 2021, 3:40 p.m. UTC | #2
On 30.01.2021 11:57, Vincent Knecht wrote:
> Disable MDSS (Mobile Display Subsystem) by default in msm8916.dtsi
> and only explicitly enable it in devices' DT which actually use it.
>
> This leads to faster boot and cleaner logs for other devices,
> which also won't have to explicitly disable MDSS to use framebuffer.
>
> Signed-off-by: Vincent Knecht <vincent.knecht@mailoo.org>
> Reviewed-by: Stephan Gerhold <stephan@gerhold.net>
> ---
>  arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi                  | 4 ++++
>  arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi | 4 ++++
>  arch/arm64/boot/dts/qcom/msm8916.dtsi                      | 1 +
>  3 files changed, 9 insertions(+)
>
> diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
> index 3a9538e1ec97..6aef0c2e4f0a 100644
> --- a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
> +++ b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
> @@ -301,6 +301,10 @@ &lpass {
>  	status = "okay";
>  };
>  
> +&mdss {
> +	status = "okay";
> +};
> +
>  &pm8916_resin {
>  	status = "okay";
>  	linux,code = <KEY_VOLUMEDOWN>;
> diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> index f1af798abd74..230ba3ce3277 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
> @@ -132,6 +132,10 @@ &dsi0 {
>  	pinctrl-1 = <&mdss_sleep>;
>  };
>  
> +&mdss {
> +	status = "okay";
> +};
> +
>  &pm8916_resin {
>  	status = "okay";
>  	linux,code = <KEY_VOLUMEDOWN>;
> diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
> index 402e891a84ab..8f9a651d3827 100644
> --- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
> +++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
> @@ -913,6 +913,7 @@ tcsr: syscon@1937000 {
>  		};
>  
>  		mdss: mdss@1a00000 {
> +			status = "disabled";
>  			compatible = "qcom,mdss";
>  			reg = <0x01a00000 0x1000>,
>  			      <0x01ac8000 0x3000>;
>

Reviewed-by: Konrad Dybcio <konrad.dybcio@somainline.org>

Konrad
diff mbox series

Patch

diff --git a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
index 3a9538e1ec97..6aef0c2e4f0a 100644
--- a/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
+++ b/arch/arm64/boot/dts/qcom/apq8016-sbc.dtsi
@@ -301,6 +301,10 @@  &lpass {
 	status = "okay";
 };
 
+&mdss {
+	status = "okay";
+};
+
 &pm8916_resin {
 	status = "okay";
 	linux,code = <KEY_VOLUMEDOWN>;
diff --git a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
index f1af798abd74..230ba3ce3277 100644
--- a/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916-samsung-a2015-common.dtsi
@@ -132,6 +132,10 @@  &dsi0 {
 	pinctrl-1 = <&mdss_sleep>;
 };
 
+&mdss {
+	status = "okay";
+};
+
 &pm8916_resin {
 	status = "okay";
 	linux,code = <KEY_VOLUMEDOWN>;
diff --git a/arch/arm64/boot/dts/qcom/msm8916.dtsi b/arch/arm64/boot/dts/qcom/msm8916.dtsi
index 402e891a84ab..8f9a651d3827 100644
--- a/arch/arm64/boot/dts/qcom/msm8916.dtsi
+++ b/arch/arm64/boot/dts/qcom/msm8916.dtsi
@@ -913,6 +913,7 @@  tcsr: syscon@1937000 {
 		};
 
 		mdss: mdss@1a00000 {
+			status = "disabled";
 			compatible = "qcom,mdss";
 			reg = <0x01a00000 0x1000>,
 			      <0x01ac8000 0x3000>;