Use syscon-based approach to access gmac clock configuration
register instead of relying on a custom clock driver.

As a bonus, we can now drop the custom clock implementation
and the dummy clocks.

Signed-off-by: Priit Laes <pl...@plaes.org>
---
 arch/arm/boot/dts/sun6i-a31.dtsi | 35 +++-----------------------------
 1 file changed, 3 insertions(+), 32 deletions(-)

diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
index f3425a66fc0a..fcf8a242741f 100644
--- a/arch/arm/boot/dts/sun6i-a31.dtsi
+++ b/arch/arm/boot/dts/sun6i-a31.dtsi
@@ -228,36 +228,6 @@ osc32k: clk-32k {
                        clock-output-names = "ext_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: clk-mii-phy-tx {
-                       #clock-cells = <0>;
-                       compatible = "fixed-clock";
-                       clock-frequency = <25000000>;
-                       clock-output-names = "mii_phy_tx";
-               };
-
-               gmac_int_tx_clk: clk-gmac-int-tx {
-                       #clock-cells = <0>;
-                       compatible = "fixed-clock";
-                       clock-frequency = <125000000>;
-                       clock-output-names = "gmac_int_tx";
-               };
-
-               gmac_tx_clk: clk@1c200d0 {
-                       #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";
-               };
        };
 
        de: display-engine {
@@ -943,11 +913,12 @@ i2c3: i2c@1c2b800 {
 
                gmac: ethernet@1c30000 {
                        compatible = "allwinner,sun7i-a20-gmac";
+                       syscon = <&ccu>;
                        reg = <0x01c30000 0x1054>;
                        interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
                        interrupt-names = "macirq";
-                       clocks = <&ccu CLK_AHB1_EMAC>, <&gmac_tx_clk>;
-                       clock-names = "stmmaceth", "allwinner_gmac_tx";
+                       clocks = <&ccu CLK_AHB1_EMAC>;
+                       clock-names = "stmmaceth";
                        resets = <&ccu RST_AHB1_EMAC>;
                        reset-names = "stmmaceth";
                        snps,pbl = <2>;
-- 
2.26.2

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