Upgrading our design to 2017.3 have revealed a possible bug in device tree generator.
In 2017.2 the generator generated the following dtsi for the DMA part of a 10G design.
hier_10g_eth_axi_dma_0: dma@80020000 {
#dma-cells = <1>;
clock-names = "s_axi_lite_aclk", "m_axi_sg_aclk", "m_axi_mm2s_aclk", "m_axi_s2mm_aclk";
clocks = <&misc_clk_0>, <&misc_clk_0>, <&misc_clk_0>, <&misc_clk_0>;
compatible = "xlnx,eth-dma";
interrupt-parent = <&gic>;
interrupts = <0 90 4 0 91 4>;
reg = <0x0 0x80020000 0x0 0x10000>;
xlnx,addrwidth = <0x24>;
xlnx,include-sg ;
dma-channel@80020000 {
compatible = "xlnx,axi-dma-mm2s-channel";
dma-channels = <0x1>;
interrupts = <0 90 4>;
xlnx,datawidth = <0x40>;
xlnx,device-id = <0x0>;
xlnx,include-dre ;
};
dma-channel@80020030 {
compatible = "xlnx,axi-dma-s2mm-channel";
dma-channels = <0x1>;
interrupts = <0 91 4>;
xlnx,datawidth = <0x40>;
xlnx,device-id = <0x0>;
xlnx,include-dre ;
};
};
hier_10g_eth_xxv_ethernet_0: ethernet@80030000 {
Switching to 2017.3 it generates the following DMA related dtsi and generates the error:
(phandle_references): Reference to non-existent node or label "hier_10g_eth_rx_data_fifo_0"
hier_10g_eth_axi_dma_0: dma@80020000 {
#dma-cells = <1>;
axistream-connected = <&hier_10g_eth_rx_data_fifo_0>;
axistream-control-connected = <&hier_10g_eth_rx_data_fifo_0>;
clock-names = "s_axi_lite_aclk", "m_axi_sg_aclk";
clocks = <&misc_clk_0>, <&misc_clk_0>;
compatible = "xlnx,eth-dma";
interrupt-parent = <&gic>;
interrupts = <0 90 4 0 91 4>;
reg = <0x0 0x80020000 0x0 0x10000>;
xlnx,include-dre ;
};
The source of this issue is commit – cc38c413fb748dec06eb57457505ed1e2ade6727
Reverting it fixes the dts - so it is like 2017.2 again.
