From: Deepak S <deepak.s@intel.com>
To: intel-gfx@lists.freedesktop.org
Subject: Re: [PATCH 4/4] drm/i915: Change CHV SKU400 GPU freq divider to 10
Date: Tue, 18 Nov 2014 14:44:57 +0530 [thread overview]
Message-ID: <546B0E11.6070103@intel.com> (raw)
In-Reply-To: <1415652915-28271-5-git-send-email-ville.syrjala@linux.intel.com>
On Tuesday 11 November 2014 02:25 AM, ville.syrjala@linux.intel.com wrote:
> From: Ville Syrjälä <ville.syrjala@linux.intel.com>
>
> According to "Cherryview_GFXclocks_y14w36d1.xlsx" the GPU frequency
> divider should be 10 in when the CZ clock is 400 MHz. Change the code
> to agree so that we report the correct frequencies.
>
> Signed-off-by: Ville Syrjälä <ville.syrjala@linux.intel.com>
> ---
> drivers/gpu/drm/i915/intel_pm.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/i915/intel_pm.c b/drivers/gpu/drm/i915/intel_pm.c
> index 0f5c391..b73506f 100644
> --- a/drivers/gpu/drm/i915/intel_pm.c
> +++ b/drivers/gpu/drm/i915/intel_pm.c
> @@ -7292,8 +7292,9 @@ static int vlv_gpu_freq_div(unsigned int czclk_freq)
> return 12;
> case 320:
> case 333:
> - case 400:
> return 16;
> + case 400:
> + return 20;
> default:
> return -1;
> }
right latest spec as div is 20
Reviewed-by: Deepak S <deepak.s@linux.intel.com>
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next prev parent reply other threads:[~2014-11-17 9:18 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-11-10 20:55 [PATCH 0/4] drm/i915: Additional CHV RPS fixes ville.syrjala
2014-11-10 20:55 ` [PATCH 1/4] drm/i915: Refactor vlv/chv GPU frequency divider setup ville.syrjala
2014-11-18 9:03 ` Deepak S
2014-11-10 20:55 ` [PATCH 2/4] drm/i915: Fix chv GPU freq<->opcode conversions ville.syrjala
2014-11-18 9:08 ` Deepak S
2014-11-17 11:35 ` Ville Syrjälä
2014-11-18 12:29 ` Deepak S
2014-11-17 12:41 ` Ville Syrjälä
2014-11-18 14:33 ` Deepak S
2014-11-17 15:39 ` Ville Syrjälä
2014-11-10 20:55 ` [PATCH 3/4] drm/i915: Add missing newline to 'DDR speed' debug messages ville.syrjala
2014-11-18 9:09 ` Deepak S
2014-11-10 20:55 ` [PATCH 4/4] drm/i915: Change CHV SKU400 GPU freq divider to 10 ville.syrjala
2014-11-11 18:09 ` [PATCH 4/4] drm/i915: Change CHV SKU400 GPU freq shuang.he
2014-11-18 9:14 ` Deepak S [this message]
2014-11-17 14:35 ` [PATCH 4/4] drm/i915: Change CHV SKU400 GPU freq divider to 10 Daniel Vetter
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