trezor-firmware/firmware/protob/messages-ethereum.options

EthereumSignTx.address_n                max_count:8
EthereumSignTx.nonce                    max_size:32
EthereumSignTx.gas_price                max_size:32
EthereumSignTx.gas_limit                max_size:32
EthereumSignTx.to                       max_size:20
EthereumSignTx.value                    max_size:32
EthereumSignTx.data_initial_chunk       max_size:1024

EthereumTxRequest.signature_r           max_size:32
EthereumTxRequest.signature_s           max_size:32

EthereumTxAck.data_chunk                max_size:1024

EthereumSignMessage.address_n           max_count:8
EthereumSignMessage.message             max_size:1024

EthereumVerifyMessage.address           max_size:20
EthereumVerifyMessage.signature         max_size:65
EthereumVerifyMessage.message           max_size:1024

EthereumMessageSignature.address        max_size:20
EthereumMessageSignature.signature      max_size:65

EthereumGetAddress.address_n            max_count:8

EthereumAddress.address                 max_size:20