diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nv50_pm.c')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nv50_pm.c | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nv50_pm.c b/drivers/gpu/drm/nouveau/nv50_pm.c index 7dbb305d7e63..8a2810011bda 100644 --- a/drivers/gpu/drm/nouveau/nv50_pm.c +++ b/drivers/gpu/drm/nouveau/nv50_pm.c @@ -47,6 +47,21 @@ nv50_pm_clock_get(struct drm_device *dev, u32 id) reg0 = nv_rd32(dev, pll.reg + 0); reg1 = nv_rd32(dev, pll.reg + 4); + + if ((reg0 & 0x80000000) == 0) { + if (id == PLL_SHADER) { + NV_DEBUG(dev, "Shader PLL is disabled. " + "Shader clock is twice the core\n"); + ret = nv50_pm_clock_get(dev, PLL_CORE); + if (ret > 0) + return ret << 1; + } else if (id == PLL_MEMORY) { + NV_DEBUG(dev, "Memory PLL is disabled. " + "Memory clock is equal to the ref_clk\n"); + return pll.refclk; + } + } + P = (reg0 & 0x00070000) >> 16; N = (reg1 & 0x0000ff00) >> 8; M = (reg1 & 0x000000ff); |