linux-kernel - Re: [PATCH v2 1/4] arm64: dts: rockchip: move power domain PD

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Message-ID: <f9488e93-6794-21bd-1e50-126c15dace1e@gmail.com>
Date:   Fri, 25 Feb 2022 17:42:43 +0100
From:   Johan Jonker <jbx6244@...il.com>
To:     Michael Riesch <michael.riesch@...fvision.net>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:     Rob Herring <robh+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Frank Wunderlich <frank-w@...lic-files.de>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Liang Chen <cl@...k-chips.com>,
        Peter Geis <pgwipeout@...il.com>,
        Simon Xue <xxm@...k-chips.com>,
        Yifeng Zhao <yifeng.zhao@...k-chips.com>,
        Nicolas Frattaroli <frattaroli.nicolas@...il.com>
Subject: Re: [PATCH v2 1/4] arm64: dts: rockchip: move power domain PD_PIPE to
 rk356x

Hi Michael,

Some more comments. Have a look if it's useful.

On 2/25/22 14:15, Michael Riesch wrote:
> The power domain PD_PIPE was moved to the RK3568 specific dtsi but
> is available on the RK3566 as well. Move it back to the shared dtsi.
> 
> Signed-off-by: Michael Riesch <michael.riesch@...fvision.net>
> ---
>  arch/arm64/boot/dts/rockchip/rk3568.dtsi | 16 ----------------
>  arch/arm64/boot/dts/rockchip/rk356x.dtsi | 14 ++++++++++++++
>  2 files changed, 14 insertions(+), 16 deletions(-)
> 
> diff --git a/arch/arm64/boot/dts/rockchip/rk3568.dtsi b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
> index 91a0b798b857..ecc0f3015915 100644
> --- a/arch/arm64/boot/dts/rockchip/rk3568.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk3568.dtsi
> @@ -100,19 +100,3 @@ opp-1992000000 {
>  		opp-microvolt = <1150000 1150000 1150000>;
>  	};
>  };

> -
> -&power {
> -	power-domain@...568_PD_PIPE {
> -		reg = <RK3568_PD_PIPE>;
> -		clocks = <&cru PCLK_PIPE>;

Should contain a complete list of rk3568 clocks for which RK3568_PD_PIPE
must be enabled.

Could someone check which we need here?
Same for rk3566 but then reduced.

<&cru PCLK_PIPE>,

<&cru PCLK_XPCS>,

<&cru CLK_USB3OTG0_REF>,
<&cru CLK_USB3OTG0_SUSPEND>,
<&cru ACLK_USB3OTG0>,

<&cru CLK_USB3OTG1_REF>,
<&cru CLK_USB3OTG1_SUSPEND>,
<&cru ACLK_USB3OTG1>,

<&cru ACLK_SATA0>,
<&cru CLK_SATA0_PMALIVE>,
<&cru CLK_SATA0_RXOOB>

<&cru ACLK_SATA1>,
<&cru CLK_SATA1_PMALIVE>,
<&cru CLK_SATA1_RXOOB>,

<&cru ACLK_SATA2>,
<&cru CLK_SATA2_PMALIVE>,
<&cru CLK_SATA2_RXOOB>

<&cru ACLK_PCIE20_MST>,
<&cru ACLK_PCIE20_SLV>,
<&cru ACLK_PCIE20_DBI>,
<&cru PCLK_PCIE20>,
<&cru CLK_PCIE20_AUX_NDFT>

<&cru ACLK_PCIE30X1_MST>,
<&cru ACLK_PCIE30X1_SLV>,
<&cru ACLK_PCIE30X1_DBI>,
<&cru PCLK_PCIE30X1>,
<&cru CLK_PCIE30X1_AUX_NDFT>

<&cru ACLK_PCIE30X2_MST>,
<&cru ACLK_PCIE30X2_SLV>,
<&cru ACLK_PCIE30X2_DBI>,
<&cru PCLK_PCIE30X2>,
<&cru CLK_PCIE30X2_AUX_NDFT>;

> -		pm_qos = <&qos_pcie2x1>,
> -			 <&qos_pcie3x1>,
> -			 <&qos_pcie3x2>,
> -			 <&qos_sata0>,
> -			 <&qos_sata1>,
> -			 <&qos_sata2>,
> -			 <&qos_usb3_0>,
> -			 <&qos_usb3_1>;
> -		#power-domain-cells = <0>;
> -	};

Maybe keep it here for rk3568.

> -};
> diff --git a/arch/arm64/boot/dts/rockchip/rk356x.dtsi b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> index 8b9fae3d348a..742f5adcdf2b 100644
> --- a/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> +++ b/arch/arm64/boot/dts/rockchip/rk356x.dtsi
> @@ -490,6 +490,20 @@ power-domain@...568_PD_RKVENC {
>  					 <&qos_rkvenc_wr_m0>;
>  				#power-domain-cells = <0>;
>  			};

> +
> +			power-domain@...568_PD_PIPE {
> +				reg = <RK3568_PD_PIPE>;

> +				clocks = <&cru PCLK_PIPE>;
> +				pm_qos = <&qos_pcie2x1>,
> +					 <&qos_pcie3x1>,
> +					 <&qos_pcie3x2>,
> +					 <&qos_sata0>,
> +					 <&qos_sata1>,
> +					 <&qos_sata2>,
> +					 <&qos_usb3_0>,
> +					 <&qos_usb3_1>;
> +				#power-domain-cells = <0>;
> +			};

rk3566 doesn't have a combphy0
Already in rk3566.dtsi

&power {
	power-domain@...568_PD_PIPE {
		reg = <RK3568_PD_PIPE>;

		clocks = <&cru PCLK_PIPE>;


Should contain a complete list of rk3566 clocks for which RK3568_PD_PIPE
must be enabled.

		pm_qos = <&qos_pcie2x1>,
			 <&qos_sata1>,
			 <&qos_sata2>,

			 <&qos_usb3_0>,

Does rk3566 have a qos_usb3_0 ??
See support list below.

			 <&qos_usb3_1>;
		#power-domain-cells = <0>;
	};
};

===

Rockchip RK3568 Datasheet V1.0-20201210.pdf page 16

Multi-PHY0 support one of the following interfaces
USB3.0 OTG
SATA0

Multi-PHY1 support one of the following interfaces
USB3.0 Host
SATA1
QSGMII/SGMII

Multi-PHY2 support one of the following interfaces
PCIe2.1
SATA2
QSGMII/SGMII

===

Rockchip RK3566 Datasheet V1.0-20201210.pdf page 16

Multi-PHY1 support one of the following interfaces
USB3.0 Host
SATA1

Multi-PHY2 support one of the following interfaces
PCIe2.1
SATA2

===

https://eji4evk5kxx.exactdn.com/wp-content/uploads/2020/12/RK3568-multiplexed-sata-usb-3.0-pcie.jpg?lossy=1&ssl=1


On rk3568:
&usb_host0_xhci {
	phys = <&usb2phy0_otg>, <&combphy0 PHY_TYPE_USB3>;
	phy-names = "usb2-phy", "usb3-phy";
};

Does this exists on rk3566?

&usb_host0_xhci {
	phys = <&usb2phy0_otg>;
	phy-names = "usb2-phy";
};

If not then why is usb_host0_xhci in a common rk356x.dtsi ??
Else fix rk3566.dtsi

===

Johan



>  		};
>  	};
>