linux-kernel - Re: [PATCH] arm64: dts: qcom: sc8180x: Fix ss_phy

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Message-ID: <g2zfjcidsmaybwd6dzsrhcour2qxklv4r35d3va7txdk6lwfi3@sw2sslg4jnqi>
Date: Wed, 27 Mar 2024 21:29:03 -0500
From: Bjorn Andersson <andersson@...nel.org>
To: Maximilian Luz <luzmaximilian@...il.com>
Cc: Konrad Dybcio <konrad.dybcio@...aro.org>, 
	Rob Herring <robh+dt@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, 
	Conor Dooley <conor+dt@...nel.org>, Vinod Koul <vkoul@...nel.org>, linux-arm-msm@...r.kernel.org, 
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] arm64: dts: qcom: sc8180x: Fix ss_phy_irq for secondary
 USB controller

On Thu, Mar 28, 2024 at 03:21:57AM +0100, Maximilian Luz wrote:
> The ACPI DSDT of the Surface Pro X (SQ2) specifies the interrupts for
> the secondary UBS controller as
> 
>     Name (_CRS, ResourceTemplate ()
>     {
>         Interrupt (ResourceConsumer, Level, ActiveHigh, Shared, ,, )
>         {
>             0x000000AA,
>         }
>         Interrupt (ResourceConsumer, Level, ActiveHigh, SharedAndWake, ,, )
>         {
>             0x000000A7,     // hs_phy_irq: &intc GIC_SPI 136
>         }
>         Interrupt (ResourceConsumer, Level, ActiveHigh, SharedAndWake, ,, )
>         {
>             0x00000228,     // ss_phy_irq: &pdc 40
>         }
>         Interrupt (ResourceConsumer, Edge, ActiveHigh, SharedAndWake, ,, )
>         {
>             0x0000020A,     // dm_hs_phy_irq: &pdc 10
>         }
>         Interrupt (ResourceConsumer, Edge, ActiveHigh, SharedAndWake, ,, )
>         {
>             0x0000020B,     // dp_hs_phy_irq: &pdc 11
>         }
>     })
> 
> Generally, the interrupts above 0x200 map to the PDC interrupts (as used
> in the devicetree) as ACPI_NUMBER - 0x200. Note that this lines up with
> dm_hs_phy_irq and dp_hs_phy_irq (as well as the interrupts for the
> primary USB controller).
> 
> Based on the snippet above, ss_phy_irq should therefore be PDC 40 (=
> 0x28) and not PDC 7. The latter is according to ACPI instead used as
> ss_phy_irq for port 0 of the multiport USB controller). Fix this by
> setting ss_phy_irq to '&pdc 40'.
> 
> Fixes: b080f53a8f44 ("arm64: dts: qcom: sc8180x: Add remoteprocs, wifi and usb nodes")
> Signed-off-by: Maximilian Luz <luzmaximilian@...il.com>

Reviewed-by: Bjorn Andersson <andersson@...nel.org>

Regards,
Bjorn

> ---
>  arch/arm64/boot/dts/qcom/sc8180x.dtsi | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/arch/arm64/boot/dts/qcom/sc8180x.dtsi b/arch/arm64/boot/dts/qcom/sc8180x.dtsi
> index 32afc78d5b769..053f7861c3cec 100644
> --- a/arch/arm64/boot/dts/qcom/sc8180x.dtsi
> +++ b/arch/arm64/boot/dts/qcom/sc8180x.dtsi
> @@ -2701,7 +2701,7 @@ usb_sec: usb@...8800 {
>  			resets = <&gcc GCC_USB30_SEC_BCR>;
>  			power-domains = <&gcc USB30_SEC_GDSC>;
>  			interrupts-extended = <&intc GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>,
> -					      <&pdc 7 IRQ_TYPE_LEVEL_HIGH>,
> +					      <&pdc 40 IRQ_TYPE_LEVEL_HIGH>,
>  					      <&pdc 10 IRQ_TYPE_EDGE_BOTH>,
>  					      <&pdc 11 IRQ_TYPE_EDGE_BOTH>;
>  			interrupt-names = "hs_phy_irq", "ss_phy_irq",
> -- 
> 2.44.0
>