linux-kernel - [PATCH 5/9] ARM: dts: sun9i: Add GMAC clock node

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Message-Id: <20190206033239.3619-6-wens@csie.org>
Date:   Wed,  6 Feb 2019 11:32:35 +0800
From:   Chen-Yu Tsai <wens@...e.org>
To:     Maxime Ripard <maxime.ripard@...tlin.com>,
        Linus Walleij <linus.walleij@...aro.org>
Cc:     Chen-Yu Tsai <wens@...e.org>, linux-arm-kernel@...ts.infradead.org,
        linux-gpio@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-sunxi@...glegroups.com
Subject: [PATCH 5/9] ARM: dts: sun9i: Add GMAC clock node

The A80 has the same DWMAC hardware as on earlier Allwinner SoCs. The
accompanying GMAC clock register has been moved into the "System
Control" area.

Add a clock node for it.

Signed-off-by: Chen-Yu Tsai <wens@...e.org>
---
 arch/arm/boot/dts/sun9i-a80.dtsi | 31 +++++++++++++++++++++++++++++++
 1 file changed, 31 insertions(+)

diff --git a/arch/arm/boot/dts/sun9i-a80.dtsi b/arch/arm/boot/dts/sun9i-a80.dtsi
index d9532fb1ef65..724ca3b850c8 100644
--- a/arch/arm/boot/dts/sun9i-a80.dtsi
+++ b/arch/arm/boot/dts/sun9i-a80.dtsi
@@ -183,6 +183,37 @@
 			clock-output-names = "osc32k";
 		};
 
+		/*
+		 * The following two are dummy clocks, placeholders
+		 * used in the gmac_tx clock. The gmac driver will
+		 * choose one parent depending on the PHY interface
+		 * mode, using clk_set_rate auto-reparenting.
+		 *
+		 * The actual TX clock rate is not controlled by the
+		 * gmac_tx clock.
+		 */
+		mii_phy_tx_clk: mii_phy_tx_clk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <25000000>;
+			clock-output-names = "mii_phy_tx";
+		};
+
+		gmac_int_tx_clk: gmac_int_tx_clk {
+			#clock-cells = <0>;
+			compatible = "fixed-clock";
+			clock-frequency = <125000000>;
+			clock-output-names = "gmac_int_tx";
+		};
+
+		gmac_tx_clk: clk@...030 {
+			#clock-cells = <0>;
+			compatible = "allwinner,sun7i-a20-gmac-clk";
+			reg = <0x00800030 0x4>;
+			clocks = <&mii_phy_tx_clk>, <&gmac_int_tx_clk>;
+			clock-output-names = "gmac_tx";
+		};
+
 		cpus_clk: clk@...1410 {
 			compatible = "allwinner,sun9i-a80-cpus-clk";
 			reg = <0x08001410 0x4>;
-- 
2.20.1