[PATCH 0/1] riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi

[PATCH 0/1] riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi

[Chukun Pan]

On OrangePi R2S and RV2 boards, when the interface link down,
reading statistics will print several timeout logs:

root@OpenWrt:~# ethtool -S eth1
[   71.725539] k1_emac cac81000.ethernet eth1: Read stat timeout
NIC statistics:
     rx_drp_fifo_full_pkts: 0
     rx_truncate_fifo_full_pkts: 0

Both OrangePi R2S and RV2 use the YT8531C PHY. The same issue occurs
when enabling ALDPS mode (Link Down Power Saving Mode) on other boards
that use the RTL8211F PHY, such as the BananaPi BPI-F3 board [1].

So disable PHY sleep mode for OrangePi R2S and RV2 to avoid this problem.

[1] https://lore.kernel.org/all/f63d455c-7593-4382-86ef-9c31a1ebd283@iscas.ac.cn/

Chukun Pan (1):
  riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi

 arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts | 2 ++
 arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 2 ++
 2 files changed, 4 insertions(+)

-- 
2.25.1


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[PATCH 1/1] riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi

[Chukun Pan]

On the SpacemiT K1 platform, the MAC can't read statistics when the PHY
clock stops. Disable Link Down Power Saving Mode for the YT8531C PHY on
OrangePi R2S and RV2 boards to avoid reading statistics timeout logs.

Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>
---
 arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts | 2 ++
 arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 2 ++
 2 files changed, 4 insertions(+)

diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
index 58098c4a2aab..de75f6aac740 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
@@ -52,6 +52,7 @@ mdio-bus {
 
 		rgmii0: phy@1 {
 			reg = <0x1>;
+			motorcomm,auto-sleep-disabled;
 		};
 	};
 };
@@ -75,6 +76,7 @@ mdio-bus {
 
 		rgmii1: phy@1 {
 			reg = <0x1>;
+			motorcomm,auto-sleep-disabled;
 		};
 	};
 };
diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
index 41dc8e35e6eb..7b7331cb3c72 100644
--- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
+++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
@@ -54,6 +54,7 @@ mdio-bus {
 
 		rgmii0: phy@1 {
 			reg = <0x1>;
+			motorcomm,auto-sleep-disabled;
 		};
 	};
 };
@@ -77,6 +78,7 @@ mdio-bus {
 
 		rgmii1: phy@1 {
 			reg = <0x1>;
+			motorcomm,auto-sleep-disabled;
 		};
 	};
 };
-- 
2.25.1


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Re: [PATCH 1/1] riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi

[Yixun Lan]

Hi  Chukun,

On 18:00 Tue 20 Jan     , Chukun Pan wrote:
> On the SpacemiT K1 platform, the MAC can't read statistics when the PHY
> clock stops. Disable Link Down Power Saving Mode for the YT8531C PHY on
> OrangePi R2S and RV2 boards to avoid reading statistics timeout logs.
> 
> Signed-off-by: Chukun Pan <amadeus@jmu.edu.cn>

Looks good to me

Reviewed-by: Yixun Lan <dlan@kernel.org>

> ---
>  arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts | 2 ++
>  arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts | 2 ++
>  2 files changed, 4 insertions(+)
> 
> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
> index 58098c4a2aab..de75f6aac740 100644
> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-r2s.dts
> @@ -52,6 +52,7 @@ mdio-bus {
>  
>  		rgmii0: phy@1 {
>  			reg = <0x1>;
> +			motorcomm,auto-sleep-disabled;
>  		};
>  	};
>  };
> @@ -75,6 +76,7 @@ mdio-bus {
>  
>  		rgmii1: phy@1 {
>  			reg = <0x1>;
> +			motorcomm,auto-sleep-disabled;
>  		};
>  	};
>  };
> diff --git a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> index 41dc8e35e6eb..7b7331cb3c72 100644
> --- a/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> +++ b/arch/riscv/boot/dts/spacemit/k1-orangepi-rv2.dts
> @@ -54,6 +54,7 @@ mdio-bus {
>  
>  		rgmii0: phy@1 {
>  			reg = <0x1>;
> +			motorcomm,auto-sleep-disabled;
>  		};
>  	};
>  };
> @@ -77,6 +78,7 @@ mdio-bus {
>  
>  		rgmii1: phy@1 {
>  			reg = <0x1>;
> +			motorcomm,auto-sleep-disabled;
>  		};
>  	};
>  };
> -- 
> 2.25.1
> 

-- 
Yixun Lan (dlan)

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Re: [PATCH 0/1] riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi

[Yixun Lan]

On Tue, 20 Jan 2026 18:00:00 +0800, Chukun Pan wrote:
> On OrangePi R2S and RV2 boards, when the interface link down,
> reading statistics will print several timeout logs:
> 
> root@OpenWrt:~# ethtool -S eth1
> [   71.725539] k1_emac cac81000.ethernet eth1: Read stat timeout
> NIC statistics:
>      rx_drp_fifo_full_pkts: 0
>      rx_truncate_fifo_full_pkts: 0
> 
> [...]

Applied, thanks!

[1/1] riscv: dts: spacemit: Disable ETH PHY sleep mode for OrangePi
      https://github.com/spacemit-com/linux/commit/5164e95565d3fd508ca8a95351323f5716dfb695

Best regards,
-- 
Yixun Lan <dlan@kernel.org>

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