The GMAC uses 1 of 2 sources for its transmit clock, depending on the
PHY interface mode. Add both sources as dummy clocks, and as parents
to the GMAC clock node.
Signed-off-by: Chen-Yu Tsai <w...@csie.org>
---
arch/arm/boot/dts/sun6i-a31.dtsi | 28 ++++++++++++++++++++++++++++
1 file changed, 28 insertions(+)
diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
index 4d2a2bf..ee09e4c 100644
--- a/arch/arm/boot/dts/sun6i-a31.dtsi
+++ b/arch/arm/boot/dts/sun6i-a31.dtsi
@@ -229,6 +229,34 @@
clocks = <&osc24M>, <&pll6>;
clock-output-names = "spi3";
};
+
+ /*
+ * 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: clk@1 {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <25000000>;
+ clock-output-names = "mii_phy_tx";
+ };
+
+ gmac_int_tx_clk: clk@2 {
+ #clock-cells = <0>;
+ compatible = "fixed-clock";
+ clock-frequency = <125000000>;
+ clock-output-names = "gmac_int_tx";
+ };
+
+ gmac_tx_clk: clk@01c200d0 {
+ #clock-cells = <0>;
+ compatible = "allwinner,sun7i-a20-gmac-clk";
+ reg = <0x01c200d0 0x4>;
+ clocks = <&mii_phy_tx_clk>, <&gmac_int_tx_clk>;
+ clock-output-names = "gmac_tx";
+ };
};
soc@01c00000 {
--
1.9.0
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