2017-04-10 07:43:47

by Niklas Cassel

[permalink] [raw]
Subject: [PATCH net-next v2] bindings: net: stmmac: add missing note about LPI interrupt

From: Niklas Cassel <[email protected]>

The hardware has a LPI interrupt.
There is already code in the stmmac driver to parse and handle the
interrupt. However, this information was missing from the DT binding.

Signed-off-by: Niklas Cassel <[email protected]>
---
Documentation/devicetree/bindings/net/stmmac.txt | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt
index f652b0c384ce..84e4cbfd3b0f 100644
--- a/Documentation/devicetree/bindings/net/stmmac.txt
+++ b/Documentation/devicetree/bindings/net/stmmac.txt
@@ -8,8 +8,8 @@ Required properties:
that services interrupts for this device
- interrupts: Should contain the STMMAC interrupts
- interrupt-names: Should contain the interrupt names "macirq"
- "eth_wake_irq" if this interrupt is supported in the "interrupts"
- property
+ "eth_wake_irq" if this interrupt is supported in the "interrupts" property
+ "eth_lpi" if this interrupt is supported in the "interrupts" property
- phy-mode: See ethernet.txt file in the same directory.
- snps,reset-gpio gpio number for phy reset.
- snps,reset-active-low boolean flag to indicate if phy reset is active low.
@@ -152,8 +152,8 @@ Examples:
compatible = "st,spear600-gmac";
reg = <0xe0800000 0x8000>;
interrupt-parent = <&vic1>;
- interrupts = <24 23>;
- interrupt-names = "macirq", "eth_wake_irq";
+ interrupts = <24 23 22>;
+ interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
mac-address = [000000000000]; /* Filled in by U-Boot */
max-frame-size = <3800>;
phy-mode = "gmii";
--
2.11.0


2017-04-11 06:08:55

by Peppe CAVALLARO

[permalink] [raw]
Subject: Re: [PATCH net-next v2] bindings: net: stmmac: add missing note about LPI interrupt

Hi Niklas

On 4/10/2017 9:43 AM, Niklas Cassel wrote:
> From: Niklas Cassel <[email protected]>
>
> The hardware has a LPI interrupt.
> There is already code in the stmmac driver to parse and handle the
> interrupt. However, this information was missing from the DT binding.

i wonder if we could improve the comments in this patch too
> Signed-off-by: Niklas Cassel <[email protected]>
> ---
> Documentation/devicetree/bindings/net/stmmac.txt | 8 ++++----
> 1 file changed, 4 insertions(+), 4 deletions(-)
>
> diff --git a/Documentation/devicetree/bindings/net/stmmac.txt b/Documentation/devicetree/bindings/net/stmmac.txt
> index f652b0c384ce..84e4cbfd3b0f 100644
> --- a/Documentation/devicetree/bindings/net/stmmac.txt
> +++ b/Documentation/devicetree/bindings/net/stmmac.txt
> @@ -8,8 +8,8 @@ Required properties:
> that services interrupts for this device
> - interrupts: Should contain the STMMAC interrupts
> - interrupt-names: Should contain the interrupt names "macirq"
> - "eth_wake_irq" if this interrupt is supported in the "interrupts"
> - property
> + "eth_wake_irq" if this interrupt is supported in the "interrupts" property
this is the PMT interrupt to manage the remote wake-up packet detection
> + "eth_lpi" if this interrupt is supported in the "interrupts" property
This is the interrupt that occurs when Tx or Rx enter/exit from LPI state

Regards
Peppe
> - phy-mode: See ethernet.txt file in the same directory.
> - snps,reset-gpio gpio number for phy reset.
> - snps,reset-active-low boolean flag to indicate if phy reset is active low.
> @@ -152,8 +152,8 @@ Examples:
> compatible = "st,spear600-gmac";
> reg = <0xe0800000 0x8000>;
> interrupt-parent = <&vic1>;
> - interrupts = <24 23>;
> - interrupt-names = "macirq", "eth_wake_irq";
> + interrupts = <24 23 22>;
> + interrupt-names = "macirq", "eth_wake_irq", "eth_lpi";
> mac-address = [000000000000]; /* Filled in by U-Boot */
> max-frame-size = <3800>;
> phy-mode = "gmii";