diff mbox

gma500: Fix n, m1 and m2 clock limits for sdvo and lvds

Message ID 1361016261-9148-1-git-send-email-patrik.r.jakobsson@gmail.com (mailing list archive)
State New, archived
Headers show

Commit Message

Patrik Jakobsson Feb. 16, 2013, 12:04 p.m. UTC
The values of n, m1 and m2 needs to be subtracted by 2 before writing them to
the FP register. The dot clock calculation already thinks of these values in
register form so we must also specify them as such.

Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
---
 drivers/gpu/drm/gma500/psb_intel_display.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

Comments

Patrik Jakobsson Feb. 21, 2013, 3:36 p.m. UTC | #1
On Sat, Feb 16, 2013 at 1:04 PM, Patrik Jakobsson
<patrik.r.jakobsson@gmail.com> wrote:
> The values of n, m1 and m2 needs to be subtracted by 2 before writing them to
> the FP register. The dot clock calculation already thinks of these values in
> register form so we must also specify them as such.
>
> Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
> ---
>  drivers/gpu/drm/gma500/psb_intel_display.c |   12 ++++++------
>  1 file changed, 6 insertions(+), 6 deletions(-)

Dave, since Alan is taking some time off, can you ACK this and apply
to drm-next?

It fixes an actual issue for David Müller:
http://lists.freedesktop.org/archives/dri-devel/2013-February/035052.html

Thanks
-Patrik
Dave Airlie Feb. 22, 2013, 12:16 a.m. UTC | #2
On Fri, Feb 22, 2013 at 1:36 AM, Patrik Jakobsson
<patrik.r.jakobsson@gmail.com> wrote:
> On Sat, Feb 16, 2013 at 1:04 PM, Patrik Jakobsson
> <patrik.r.jakobsson@gmail.com> wrote:
>> The values of n, m1 and m2 needs to be subtracted by 2 before writing them to
>> the FP register. The dot clock calculation already thinks of these values in
>> register form so we must also specify them as such.
>>
>> Signed-off-by: Patrik Jakobsson <patrik.r.jakobsson@gmail.com>
>> ---
>>  drivers/gpu/drm/gma500/psb_intel_display.c |   12 ++++++------
>>  1 file changed, 6 insertions(+), 6 deletions(-)
>
> Dave, since Alan is taking some time off, can you ACK this and apply
> to drm-next?
>

done.

Dave.
diff mbox

Patch

diff --git a/drivers/gpu/drm/gma500/psb_intel_display.c b/drivers/gpu/drm/gma500/psb_intel_display.c
index 8033526..9edb190 100644
--- a/drivers/gpu/drm/gma500/psb_intel_display.c
+++ b/drivers/gpu/drm/gma500/psb_intel_display.c
@@ -85,14 +85,14 @@  struct psb_intel_limit_t {
 #define I9XX_DOT_MAX		 400000
 #define I9XX_VCO_MIN		1400000
 #define I9XX_VCO_MAX		2800000
-#define I9XX_N_MIN		      3
-#define I9XX_N_MAX		      8
+#define I9XX_N_MIN		      1
+#define I9XX_N_MAX		      6
 #define I9XX_M_MIN		     70
 #define I9XX_M_MAX		    120
-#define I9XX_M1_MIN		     10
-#define I9XX_M1_MAX		     20
-#define I9XX_M2_MIN		      5
-#define I9XX_M2_MAX		      9
+#define I9XX_M1_MIN		      8
+#define I9XX_M1_MAX		     18
+#define I9XX_M2_MIN		      3
+#define I9XX_M2_MAX		      7
 #define I9XX_P_SDVO_DAC_MIN	      5
 #define I9XX_P_SDVO_DAC_MAX	     80
 #define I9XX_P_LVDS_MIN		      7