SCLK_CNTL
sclk_cntl = RREG32_PLL(SCLK_CNTL);
WREG32_PLL(SCLK_CNTL, sclk_cntl);
OUTPLL(SCLK_CNTL, 0xffff0000);
tmp = INPLL(SCLK_CNTL);
OUTPLL(SCLK_CNTL, tmp | 2);
tmp = INPLL(SCLK_CNTL);
OUTPLL(SCLK_CNTL, tmp);
rinfo->save_regs[3] != INPLL(SCLK_CNTL);
rinfo->save_regs[3] = INPLL(SCLK_CNTL);
OUTPLL(SCLK_CNTL, rinfo->save_regs[3]);