dpa_ctl &= ~DP_PLL_FREQ_MASK;
if (clock < 200000) {
- u32 temp;
+ /* For a long time we've carried around a ILK-DevA w/a for the
+ * 160MHz clock. If we're really unlucky, it's still required.
+ */
+ DRM_DEBUG_KMS("160MHz cpu eDP clock, might need ilk devA w/a\n");
dpa_ctl |= DP_PLL_FREQ_160MHZ;
- /* workaround for 160Mhz:
- 1) program 0x4600c bits 15:0 = 0x8124
- 2) program 0x46010 bit 0 = 1
- 3) program 0x46034 bit 24 = 1
- 4) program 0x64000 bit 14 = 1
- */
- temp = I915_READ(0x4600c);
- temp &= 0xffff0000;
- I915_WRITE(0x4600c, temp | 0x8124);
-
- temp = I915_READ(0x46010);
- I915_WRITE(0x46010, temp | 1);
-
- temp = I915_READ(0x46034);
- I915_WRITE(0x46034, temp | (1 << 24));
} else {
dpa_ctl |= DP_PLL_FREQ_270MHZ;
}
+
I915_WRITE(DP_A, dpa_ctl);
POSTING_READ(DP_A);