Hi!
> >>>>index dac78ad..b86f06a 100644
> >>>>--- a/drivers/gpu/drm/radeon/atombios_crtc.c
> >>>>+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
> >>>>@@ -569,6 +569,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
> >>>> radeon_crtc->pll_flags = 0;
> >>>>
> >>>> if (ASIC_IS_AVIVO(rdev)) {
> >>>>+ radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
> >>>>+
> >>>> if ((rdev->family == CHIP_RS600) ||
> >>>> (rdev->family == CHIP_RS690) ||
> >>>> (rdev->family == CHIP_RS740))
> >>>>
> >>>Help.. maybe... it is tricky to tell. It definitely does _not_ fix the
> >>>issue completely.
> >>You could also try the old pll algorithm:
> >I reverted the patch above, and switched to the old algorithm.
> >
> >The flicker is still there. (But maybe its less horrible, like with
> >RADEON_PLL_PREFER_MINM_OVER_MAXP).
>
> The flickering would vanish completely if that's the reason for the issue
> you are seeing.
> Try setting ref_div_min and ref_div_max to 2 in
> radeon_compute_pll_avivo().
Ok, I did this, but no luck, still flickers. But the flicker only
happens when something changes on screen, like dragging a big
window. Is that consistent with wrong PLL timings?
diff --git a/config.32 b/config.32
index 00e5dd2..4734158 100644
--- a/config.32
+++ b/config.32
@@ -1090,7 +1090,7 @@ CONFIG_DEVTMPFS_MOUNT=y
CONFIG_PREVENT_FIRMWARE_BUILD=y
CONFIG_FW_LOADER=y
CONFIG_FIRMWARE_IN_KERNEL=y
-CONFIG_EXTRA_FIRMWARE="radeon/R700_rlc.bin"
+CONFIG_EXTRA_FIRMWARE="radeon/R700_rlc.bin radeon/RV710_smc.bin radeon/RV710_uvd.bin"
CONFIG_EXTRA_FIRMWARE_DIR="/lib/firmware"
# CONFIG_FW_LOADER_USER_HELPER_FALLBACK is not set
CONFIG_ALLOW_DEV_COREDUMP=y
diff --git a/drivers/gpu/drm/radeon/atombios_crtc.c b/drivers/gpu/drm/radeon/atombios_crtc.c
index dac78ad..dcc4f4d 100644
--- a/drivers/gpu/drm/radeon/atombios_crtc.c
+++ b/drivers/gpu/drm/radeon/atombios_crtc.c
@@ -569,6 +569,8 @@ static u32 atombios_adjust_pll(struct drm_crtc *crtc,
radeon_crtc->pll_flags = 0;
if (ASIC_IS_AVIVO(rdev)) {
+ //radeon_crtc->pll_flags |= RADEON_PLL_PREFER_MINM_OVER_MAXP;
+
if ((rdev->family == CHIP_RS600) ||
(rdev->family == CHIP_RS690) ||
(rdev->family == CHIP_RS740))
diff --git a/drivers/gpu/drm/radeon/radeon_display.c b/drivers/gpu/drm/radeon/radeon_display.c
index 6743174..bebaf4f 100644
--- a/drivers/gpu/drm/radeon/radeon_display.c
+++ b/drivers/gpu/drm/radeon/radeon_display.c
@@ -947,6 +947,7 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll,
fb_div_max = pll->max_feedback_div;
if (pll->flags & RADEON_PLL_USE_FRAC_FB_DIV) {
+ printk("radeon: fractional divider\n");
fb_div_min *= 10;
fb_div_max *= 10;
}
@@ -966,6 +967,9 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll,
else
ref_div_max = pll->max_ref_div;
+ ref_div_min = 2;
+ ref_div_max = 2;
+
/* determine allowed post divider range */
if (pll->flags & RADEON_PLL_USE_POST_DIV) {
post_div_min = pll->post_div;
@@ -1020,6 +1024,8 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll,
diff = abs(target_clock - (pll->reference_freq * fb_div) /
(ref_div * post_div));
+ printk("post_div = %d, diff = %d\n", post_div, diff);
+
if (diff < diff_best || (diff == diff_best &&
!(pll->flags & RADEON_PLL_PREFER_MINM_OVER_MAXP))) {
@@ -1028,6 +1034,7 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll,
}
}
post_div = post_div_best;
+ printk("Selected post_div = %d\n", post_div);
/* get the feedback and reference divider for the optimal value */
avivo_get_fb_ref_div(nom, den, post_div, fb_div_max, ref_div_max,
@@ -1062,7 +1069,7 @@ void radeon_compute_pll_avivo(struct radeon_pll *pll,
*ref_div_p = ref_div;
*post_div_p = post_div;
- DRM_DEBUG_KMS("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
+ printk("%d - %d, pll dividers - fb: %d.%d ref: %d, post %d\n",
freq, *dot_clock_p * 10, *fb_div_p, *frac_fb_div_p,
ref_div, post_div);
}
> But I'm not 100% convinced that this is actually a PLL problem, try to
> compile the firmware it complains about into the kernel as well.
Did that, too.
Best regards,
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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