CH_OPCODE
val |= reg_encode(reg, CH_OPCODE, opcode);
[CH_OPCODE] = GENMASK(31, 24),
[CH_OPCODE] = GENMASK(31, 24),
[CH_OPCODE] = GENMASK(31, 24),
[CH_OPCODE] = GENMASK(31, 24),
[CH_OPCODE] = GENMASK(31, 24),
[CH_OPCODE] = GENMASK(31, 24),
[CH_OPCODE] = GENMASK(31, 24),