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json2dts_linux: update ethmac DT node generation 

The Linux LiteETH driver parses registers by name. Provide the expected
names for each register: "mac", "mdio", and "buffer", respectively.

For setting up tx and rx slots, the Linux driver expects three pieces
of information: number of tx and rx slots, and slot size. Update
json2dts_linux to provide the appropriate names and values.
This commit is contained in:
Gabriel Somlo 2021-08-24 16:16:07 -04:00
parent f017b06926
commit 98a0b688bf
1 changed files with 6 additions and 3 deletions
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9
litex/tools/litex_json2dts_linux.py
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@ -275,8 +275,10 @@ def generate_dts(d, initrd_start=None, initrd_size=None, polling=False):
reg = <0x{ethmac_csr_base:x} 0x7c>,
<0x{ethphy_csr_base:x} 0x0a>,
<0x{ethmac_mem_base:x} 0x{ethmac_mem_size:x}>;
tx-fifo-depth = <{ethmac_tx_slots}>;
rx-fifo-depth = <{ethmac_rx_slots}>;
reg-names = "mac", "mdio", "buffer";
litex,rx-slots = <{ethmac_rx_slots}>;
litex,tx-slots = <{ethmac_tx_slots}>;
litex,slot-size = <{ethmac_slot_size}>;
{ethmac_interrupt}
status = "okay";
}};
@ -285,8 +287,9 @@ def generate_dts(d, initrd_start=None, initrd_size=None, polling=False):
ethmac_csr_base = d["csr_bases"]["ethmac"],
ethmac_mem_base = d["memories"]["ethmac"]["base"],
ethmac_mem_size = d["memories"]["ethmac"]["size"],
ethmac_tx_slots = d["constants"]["ethmac_tx_slots"],
ethmac_rx_slots = d["constants"]["ethmac_rx_slots"],
ethmac_tx_slots = d["constants"]["ethmac_tx_slots"],
ethmac_slot_size = d["constants"]["ethmac_slot_size"],
ethmac_interrupt = "" if polling else "interrupts = <{}>;".format(d["constants"]["ethmac_interrupt"]))
# USB OHCI -------------------------------------------------------------------------------------