AMD_PMF_REGISTER_RESPONSE
value = amd_pmf_reg_read(dev, AMD_PMF_REGISTER_RESPONSE);
rc = readx_poll_timeout(ioread32, dev->regbase + AMD_PMF_REGISTER_RESPONSE,
amd_pmf_reg_write(dev, AMD_PMF_REGISTER_RESPONSE, 0);
rc = readx_poll_timeout(ioread32, dev->regbase + AMD_PMF_REGISTER_RESPONSE,