linux-kernel - [PATCH V2 net-next 4/4] ARM: dts: stm32: Enable gating of the MAC TX clock during TX low-power mode on stm32mp157c

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Message-ID: <20191105124505.4738-5-christophe.roullier@st.com>
Date:   Tue, 5 Nov 2019 13:45:05 +0100
From:   Christophe Roullier <christophe.roullier@...com>
To:     <robh@...nel.org>, <davem@...emloft.net>, <joabreu@...opsys.com>,
        <mark.rutland@....com>, <mcoquelin.stm32@...il.com>,
        <alexandre.torgue@...com>, <peppe.cavallaro@...com>
CC:     <linux-stm32@...md-mailman.stormreply.com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <netdev@...r.kernel.org>,
        <christophe.roullier@...com>, <andrew@...n.ch>
Subject: [PATCH V2 net-next 4/4] ARM: dts: stm32: Enable gating of the MAC TX clock during TX low-power mode on stm32mp157c

When there is no activity on ethernet phy link, the ETH_GTX_CLK is cut

Signed-off-by: Christophe Roullier <christophe.roullier@...com>
---
 arch/arm/boot/dts/stm32mp157c.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/stm32mp157c.dtsi b/arch/arm/boot/dts/stm32mp157c.dtsi
index f13c2348d130..8df2986dd452 100644
--- a/arch/arm/boot/dts/stm32mp157c.dtsi
+++ b/arch/arm/boot/dts/stm32mp157c.dtsi
@@ -1334,6 +1334,7 @@
 			st,syscon = <&syscfg 0x4>;
 			snps,mixed-burst;
 			snps,pbl = <2>;
+			snps,en-tx-lpi-clockgating;
 			snps,axi-config = <&stmmac_axi_config_0>;
 			snps,tso;
 			status = "disabled";
-- 
2.17.1