Hi
About H3 internal phy, i seeing that in H3 datasheet, maybe it 's help someone
to make it work :
EMAC Clock Register defaut value (H3 datasheet V1.1 page 153)
0b1011000000000000000 --- 0x58000
CLK_SEL 24mhz = 1
led POL high active = 0
shutdown = 1 (bit 16)
Internal PHY = 1
In my pepito opinion (no skill in kernel driver dev), it's look like emac from
A31 is the same H3 but with an option for internal PHY. I see stmmac-dwmac
working in log openwrt for A31 but with external phy. So for H3 I look for like
this way and i propose some "add" in dtsi for testing :
//ADD
aliases {
ethernet0 = &gmac;
};
//ADD
ahb1_rst: reset@01c202c4 {
#reset-cells = <1>;
compatible = "allwinner,sun6i-a31-ahb1-reset";
reg = <0x01c202c4 0x4>;
};
//ADD
ahb2_rst: reset@01c202c8 {
#reset-cells = <1>;
compatible = "allwinner,sun6i-a31-ahb1-reset";
reg = <0x01c202c8 0x4>;
};
//ADD - EMAC Clock Register defaut value 0x58000 - need reset bit 16 (power up)
emac_clk_reg_rst: reset@01c30000 {
#reset-cells = <1>;
compatible = "allwinner,sun6i-a31-ahb1-reset";
reg = <0x01c30000 0x4>;
};
//ADD
gmac: ethernet@01c30000 {
compatible = "allwinner,sun7i-a20-gmac", "snps,dwmac";
reg = <0x01c30000 0x1054>;
interrupts = <GIC_SPI 82 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "macirq";
clocks = <&bus_gates 17>;
clock-names = "stmmaceth";
//Maybe init phy at 25mhz after reset? (defaut CLK_SEL 24mhz =
1)
//resets = <&ahb_rst 17>, <&ahb2_rst 2>, <&emac_clk_reg_rst
16>, <&emac_clk_reg_rst 18>;
//reset-names = "stmmaceth", "ephyrst", "pwrup",
"clk_sel_25mhz";
resets = <&ahb_rst 17>, <&ahb2_rst 2>, <&emac_clk_reg_rst 16>;
reset-names = "stmmaceth", "ephyrst", "pwrup";
snps,pbl = <2>;
snps,fixed-burst;
snps,force_sf_dma_mode;
status = "disabled";
#address-cells = <1>;
#size-cells = <0>;
};
What do you think about that, already tried? I don't understand how phy is
handled by driver (internal or external, i look at src sunxi_geth.c linux 3.4
but i m a pepito in kernel dev!).
I haven't receive my oppc for now so i can' t try mysefl. Hope ethernet will
work soon in mainline ;)
And a lot of respect for your hardwork already done!
Pepito
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